JP3387636B2 - Sheet material feeding device and recording device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording device (printer) as an information output device in a word processor, a personal computer or the like, an image forming device such as a copying machine or a facsimile, and various other equipments using sheet materials. , Sheet materials stacked in the sheet material stacking unit (printing paper, transfer paper, photosensitive paper, electrostatic recording paper, printing paper, OHP
The present invention relates to a sheet material feeding device for feeding sheets, envelopes, postcards, sheet originals, etc.) to a sheet material processing portion such as a recording portion, a reading portion, and a processing portion, and a recording device provided with this sheet material feeding device.

[0002]

2. Description of the Related Art Conventionally, a sheet material feeding device for feeding a sheet material is provided with a jam detecting means for detecting whether or not the sheet is properly fed. For example, in order to detect whether or not the sheet material sent by the feeding roller from the sheet material stacking table on which the sheet material is stacked has properly reached the conveying roller, the sheet between the sheet material stacking table and the conveying roller is detected. Some have a sensor for detecting the material.

This sensor is connected to the control means,
If the sensor does not detect the fed sheet material for a predetermined time after the feeding roller starts feeding the sheet material, the control means is not feeding the sheet material in the middle of the sheet material. When it is judged that the paper is jammed (jam), the driving of the feeding roller and the conveying roller is stopped, and the jam is displayed.

[0004]

However, if the sensor does not detect the sheet material after a lapse of a predetermined time from the start of feeding the sheet material, it is judged that the sheet material is not properly fed or a jam occurs and the apparatus is stopped. Even if the sheet material can still be sufficiently fed just after a certain amount of time has accidentally been delayed due to the cause, the device will stop uniquely, so the user opens the device and opens the sheet. There is a problem in that it is inefficient because it is necessary to perform work such as pulling out materials.

In particular, when the distance between the feeding roller and the conveying roller is shortened or the feeding speed is increased in order to increase the speed, the setting range of the predetermined time becomes narrow and the above situation frequently occurs. There is a risk of

The present invention has been made in view of the above problems, and by repeating the feeding operation, the sheet material is fed without stopping the apparatus if the feeding is possible even after a predetermined time elapses. An object of the present invention is to provide a sheet material feeding device capable of feeding.

[0007]

SUMMARY OF THE INVENTION The present invention is directed to a sheet material loading platform for loading a plurality of sheet materials, and a feeding device for feeding the sheet materials by contacting the sheet materials loaded on the sheet material loading platform. A roller, a separating member for separating the sheet material fed by the feeding roller, a sheet material detecting means for detecting the sheet material on the downstream side of the separating member, and a sheet material on the downstream side of the sheet material detecting means A transport roller for transporting the first
A pulse motor that rotates the transport roller in the normal direction when rotated in the direction of 2 and rotates in the second direction when the transport roller rotates in the second direction, and rotates the pulse motor in the second direction. The sheet material stacked on the material stacking table is brought into contact with the feeding roller, and the sheet material detecting means detects the leading end of the sheet material fed by the feeding roller, and then the pulse motor is operated. By rotating the pulse motor in the first direction after abutting the leading edge of the sheet material to the reversing conveyance roller by further rotating the sheet material in the second direction by the first number of pulses, the conveyance is performed by rotating the pulse motor in the first direction. A sheet material feeding device for rotating a roller in a normal direction to feed the sheet material downstream, wherein the sheet material detecting means starts the rotation in the second direction, The count value of the pulse motor until the sensing tip, the tip of the sheet material is determined to not impinge on the transport rollers are reversed,
After rotating the pulse motor by the first number of pulses in the second direction, the pulse motor is rotated by a second number of pulses in the first direction and the second number of pulses in the second direction. It is characterized in that the sheet material is fed by rotating the feeding roller again after rotating the sheet material.

The present invention is characterized in that the separating member separates the sheet material by changing the angle with respect to the mounting portion when the sheet material fed by the feeding roller hits.

According to the present invention, there is provided a guide member for guiding the sheet material on the downstream side of the separating member, and the separating member is perpendicular to a line of the sheet material stacked on the sheet material stacking table in the feeding direction. It is fixed to the guide member while being inclined to the feeding roller side.

[0010]

[0011]

According to the above configuration, the count value of the pulse motor from the time when the pulse motor starts rotating in the second direction to the time when the sheet material detecting means detects the leading edge of the sheet material,
When it is determined that the leading edge of the sheet material does not hit the reversing conveyance roller, the pulse motor is rotated by the first pulse number in the second direction, and then the pulse motor is rotated by the second pulse number in the first direction. The sheet is fed by rotating the feeding roller again by rotating the feeding roller for the second number of pulses in the second direction. Therefore, the skew of the sheet is corrected again and the sheet is fed to the correct printing position. It is possible to feed the sheet, and it is possible to greatly reduce the frequency of occurrence of sheet feeding failure due to slipping of the sheet feeding roller when a sheet material having a low surface friction coefficient is used, for example.

[0012]

[0013]

1 and 2 show a first embodiment in which the present invention is applied to an ink jet printer using an ink jet system as a recording means. FIG. 1 is a schematic view showing the mechanism of this apparatus, and FIG. It is sectional drawing of this apparatus.

In FIG. 2, the outside of the main body of the apparatus is a cover 1.
And a lid 2 rotatable about a shaft 2a. The lid 2 also serves as a sheet material tray. The sheet material is inserted through the insertion opening 1a provided in the cover 1 and is discharged through the discharge opening 1b.
Emitted from. Inside the plurality of side plates 3 provided in the cover 1, a sheet material loading table is urged toward the feeding roller 9 (upward) by a spring 5 whose one end is fixed by a pin 6 around a shaft 4a. (Sheet material stacking means) 4,
A feeding roller (sheet material feeding means) 9 fixed to the shaft 8 and having a long radius portion that can come into contact with the sheet material and a short radius portion that does not come into contact with the sheet material. A drive cam 7 that engages with the follower portions 4b provided at the left and right ends of the sheet material stacking table 4 by the rotation and pushes down the sheet material stacking table 4 downward, and the sheet material fed by the feeding roller 9. The abutting member (separating means) 1 which is a separating member that separates the sheet material by causing an angle change when the sheet abuts
0 and a surface 11a that is guided in a rising direction of the tip of the sheet material separated by the abutting member 10. The sheet material and the abutting member 1 are guided by the surface 11a.
And a guide member 11 for separating the leading end of 0.

Further, a photosensor (sheet material detecting means) having a light emitting portion and a light receiving portion on the downstream side of the guide member 11 for detecting the front edge and the rear edge of the sheet material with or without reflected light.
PH, a conveying roller (conveying means) 13 fixed to the shaft 12 and conveying the sheet material guided by the upper guide 28a and the guide member 11 by the feeding roller 9 and fed at a constant speed, and rotated by the shaft 14. The sheet material is conveyed to the conveying roller 13 by the force of a spring 15 via a shaft 14 provided freely.
The first pinch roller 16 that presses against the ink and the ink absorbing material 17
A platen 18 having a built-in roller, a paper discharge roller 20 that is fixed to a shaft 19 and discharges a printed sheet material, and a shaft 21 that is rotatably provided on the shaft 21. Second pinch roller 2 pressing against 20
3, a carriage 26 that is guided by the guide shafts 24 and 25 and is movable in the width direction of the paper, and a carriage 26 that is mounted on the carriage 26 and that ejects ink from the ejection unit 27a corresponding to image information for printing. The recording head 27 is provided.

The carriage 26 has a motor 29 provided on a central side plate 28 having an upper guide 28a, a pulley 30 provided on its output shaft, and a belt having one end fixed to the carriage 26 and attached to the pulley 30. Three
Driven by 1.

Further, an operation electric board 33 having a plurality of switch buttons 32 provided so as to project from the holes of the case 1 inside the case 1 and a microcomputer provided under the sheet material loading table 4 are provided. A control electric board (control means) 34 for mounting the memory and a memory to control the operation of the apparatus is appropriately arranged.

The mechanism of the apparatus will be further described with reference to FIG. First, the switching means for contacting / separating the sheet material on the sheet material stacking base 4 with the feeding roller 9 will be described.

The drive cam (cam member) 7 fixed to the shaft 8 of the feeding roller 9 and the follower portion 4b provided on the sheet material stacking base 4 are in contact with each other at a predetermined position by the force of the spring 5. The drive cam 7 is synchronized with the feeding rotation of the feeding roller 9.
The sheet material stacking base 4 moves up and down by the rotation of the drive cam 7 to bring the sheet material and the feeding roller 9 into contact with and separate from each other.

A pulley 37 provided at one end of the transport roller shaft 12 and a pulley 3 provided at one end of the paper discharge roller shaft 19.
Since 8 is connected by a belt 39, the rotation of the motor M, which is a drive source, is transmitted to the paper discharge roller 20 via the shaft 12.

A cap base 41 having a cap 40 for covering the ink ejection portion 27a of the recording head 27 is provided on the side opposite to the motor across the sheet material conveying path. The cap base 41 has a rotating shaft 41a and a push-down cam portion 41b, and the force of a spring 42 causes the shaft 41a to move.
Rotation is urged counterclockwise around. And
When the protrusion 26a of the carriage 26 comes into contact with the push-down cam 41b due to the movement of the carriage 26, the cap base 41 is pushed down against the force of the spring 42 and the cap 40 is lowered, so that the protrusion 26a is pushed down by the cam 41.
After passing b, the cap 40 rises and the discharge part 27
Cover the discharge port in close contact with a.

The pump 43 has a piston shaft 43b forming a rack 43a, a suction port 43c, and a discharge port 43d. The suction port 43c and the cap 40 are formed by a tube 40a, and the discharge port 43b is formed by a platen base 18. The ink is sucked from the cap 40 and discharged to the absorbing member 17 in the platen 18.

The pump drive gear 45 with which the rack 43a of the pump 43 meshes is provided on the shaft 12 so as to be movable in the direction along the axis of the shaft 12 and to be linked to the rotation of the shaft 12. It is biased by a spring 46 to a position where it does not mesh with the rack 43a.

Solid components of the ink are likely to adhere to the periphery of the ejection port of the recording head 27, which may cause ejection failure. At this time, in order to perform the ejection failure recovery operation, the motor 29 moves the carriage 26 in accordance with a command from the controller 34 to couple the ejection portion 27a with the cap 40. The carriage 2
6, the protrusion 26b of the carriage 26 moves the pump drive gear 45 to the position shown by the chain double-dashed line, so that the pump drive gear 45 meshes with the rack 43a. In this state, by driving the motor M, the gear 45 repeats forward and reverse rotations within a predetermined rotation angle a predetermined number of times, and the rack 43a reciprocates in the straight traveling direction a predetermined number of times. Since the reciprocating movement of the rack 43a also reciprocates in conjunction with the piston shaft 43b, the pump 43 absorbs the ink and its solid content from the ink ejecting portion 27a,
The suctioned material is discharged to the absorbing member 17 in the platen 18.

Next, the structure of the drive transmission means for transmitting the rotation of the motor M to the feeding roller 9 and the conveying roller 13 will be described.

The motor M has an output gear 47 provided on the motor shaft and a two-stage gear 48 according to a signal from the controller 34.
Then, the pair of conveying rollers 13 and 16 are rotated through the conveying roller gear 49 fixed to the shaft 12 to convey the sheet material.

On the other hand, the motor M rotates the output gear 47, the two-stage gear 48, and the gear 51 fixed to the shaft 50. Similarly, the first planetary gear 53 that meshes with the first sun gear 52 fixed to the shaft 50 is composed of a large planetary gear 53a and a small planetary gear 53b, and the shaft 54 of the first planetary gear 53 rotates about the shaft 50. It is pivotally supported by the moving first carrier 55.

A spring 56 provided on the shaft 54 causes the first planetary gear 53 to move the first planetary gear 53 to one arm member 55 of the first carrier.
Since the first planetary gear 53 is rotated against a by a predetermined pressure, a constant load is applied to the rotation of the first planetary gear 53.

1 and 3, the first sun gear 52 rotates in the direction of arrow 50a by the rotation of the output gear 47 provided on the shaft of the motor M in the direction of arrow 47a. Since a constant load is applied to the rotation of the large planetary gear 53a that meshes with the first sun gear 52, the first planetary gear 53 does not rotate but revolves around the first sun gear 52 in the direction of the arrow 50a. By this revolution, the first carrier 55 also rotates in the direction of the arrow 50a, so that the small planetary gear 53b and the gear 57 fixed to the feeding roller shaft 8 mesh with each other, whereby the rotation of the motor M in the direction of the arrow 47a rotates on the shaft 8. As a result, the paper feed roller 9 rotates in the feeding direction 8a.

The gear 57 is provided with a toothless portion 57a, and when the gear 57 is rotated and the toothless portion 57a comes into a meshing position with the small planetary gear 53b, the small planetary gear 53b idles. Therefore, the rotation of the gear 57 and the feed roller 9 in the feeding direction is stopped.

In FIGS. 1 and 4, the arrow 4 of the motor M is shown.
Due to the rotation in the 7b direction, the sun gear 52 rotates in the arrow 50b direction. Following this rotation, the first carriers 55, 55
a rotates in the direction of arrow 50b together with the first planetary gear 53. Due to the rotation of the first carrier 55 in the direction of the arrow 50b, the small planetary gear 53b is disengaged from the meshing position with the gear 57, and one arm member 55a of the first carrier 55 is pin 58.
The rotation of the first carrier 55 is stopped by abutting against. At the position where the rotation of the first carrier 55 is stopped, the small planetary gear 53 is being rotated while the first sun gear 52 is rotating in the direction of the arrow 50b.
b continues to spin.

The gear 60 meshing with the first sun gear 52 and the second sun gear 61 are fixed to the shaft 59. A second planetary gear 62 that meshes with the second sun gear 61 is pivotally supported by a second carrier 63 that freely rotates around a shaft 59.
Since the second planetary gear 62 is pressed against the one arm member 63a of the second carrier with a predetermined pressure by the spring 64, a constant load is applied to the rotation of the second planetary gear 62.

In FIGS. 1 and 3, the arrow 47 of the motor M is shown.
The gear 60, the shaft 59, and the second sun gear 6 are rotated by the rotation in the a direction.
1 rotates in the direction of the arrow 59a, and in response to this rotation, the second carrier 63 moves together with the second planetary gear 62 in the same manner as the arrow 5a.
The rotation of the second carrier 63 is stopped when the carrier arm member 63a and the pin 65 finally come into contact with each other in the direction of 9a. With the second carrier 63 stationary, the sun gear 61
The second planetary gear 62 continues idling due to the subsequent rotation of.

In FIGS. 1 and 4, the arrow 4 of the motor M is shown.
By the rotation in the 7b direction, the sun gear 61 rotates in the direction of the arrow 59b, and in response to this rotation, the second carrier 63 moves into the second direction.
Similarly, the second planetary gear 62 rotates in the direction of the arrow 59b together with the planetary gear 62, and finally the second planetary gear 62 is brought into a state of meshing with the toothless gear 57, so that the rotation of the second sun gear 61 in the direction of the arrow 59b passes through the shaft 8 through the sheet feeding roller 9. Is transmitted as rotation in the feeding direction 8a.

The rotation of the gear 57 due to the driving of the second planetary gear 62 progresses, and the toothless portion 57a of the gear 57 forms the second planetary gear 62.
When it comes to the meshing position with, the second planetary gear 62 idles and cuts off the transmission to the gear 57.

At a predetermined angle α in the so-called non-interlocking process region where the second planetary gear 62 does not mesh with the tooth-chipped gear 57 within the entire revolution angle region in which the second planetary gear 62 revolves around the second sun gear 61. The second planetary gear meshes with the internal gear 66. By this meshing, the second planetary gear 62 revolves around the second sun gear 61 while rotating on its axis.

In FIG. 1, this disengagement process region is provided so that the gear 57 does not mesh with the second planetary gear 62 when the pump 43 is operated by a predetermined amount of forward and reverse rotations of the motor M.

In the present embodiment, when the motor M rotates a predetermined amount necessary for performing the above operation, the angle as the non-interlocking process area needs to be 360 °, and the second planetary gear without the internal gear 66 is provided. If 62 does not rotate but only revolves, 3
It is impossible to set a non-interlocking process area of 60 °.

Therefore, by providing the internal gear 66, the second planetary gear 61 is rotated and the revolution speed is reduced to set the non-interlocking process area. This will be explained. When the number of teeth of the second sun gear 61 is Z ₁ , the number of teeth of the second planetary gear 62 is Z ₂ , and the number of teeth of the internal gear 66 is Z ₃ , the relationship Z ₃ = Z ₁ + 2Z ₂ .

Therefore, the speed reduction ratio between Z ₁ and Z ₃ is Z ₁ / Z ₃ = 1/1 + 2 (Z ₂ / Z ₁ ). That is, when the second sun gear 61 rotates the angle region in which the teeth of the internal gear 66 are provided by α degrees, the second planetary gear 62
Will make an orbit of α / 1 + 2 (Z ₁ / Z ₂ ) degrees,
The revolution speed is greatly reduced.

For example, α = 120 °, Z ₁ = 10, Z ₂ = 1
When 0, the revolution angle β of the second planetary gear 62 is β = 120
° / 3 = 40 °.

On the other hand, in order for the second planetary gear 62 to revolve at 120 °, the second sun gear 61 has 120 ° × 3 = 36.
Since the rotation of 0 ° is performed, the required non-interlocking process area can be set at 120 °.

Next, the feeding operation and the print recording operation in the first embodiment will be described with reference to FIGS. 1 to 4 and 5 to 10. 5 to 8 are sectional views showing main constituent members for feeding the sheet material in FIG.

First, as the initialization operation, when the power source of the apparatus is turned on, the motor M shown in FIG.
7a direction, that is, the conveyance roller 13 moves the sheet material S to the position shown in FIG.
When a predetermined amount is rotated in the sub-scanning conveyance direction toward the discharge port 16 in FIG. 3, the drive transmission unit is in a state in which the rotation of the motor M shown in FIGS. 3 and 5 is not transmitted to the feeding roller 9, while the sheet material feeding unit is Becomes the state shown in FIG.

In FIG. 5, the stop position lift surface 7b of the drive cam 7 and the follower portion 4 provided on the sheet material loading table 4 are shown.
In the state where b is engaged by the force of the spring 5, the sheet material loading table 4 is stationary at the position moved downward. In this state, a plurality of sheet materials S are placed on the sheet material stacking table 4 with their leading ends abutting against the bottom of the abutting member 10.

In FIGS. 4 and 6, when the motor M rotates in the direction of arrow 47b by a predetermined amount in response to a feeding command from the controller 34, the second planetary gear 62 is in a position where the second carrier 63 and the pin 65 are in contact with each other. To the position where it meshes with the gear 57. The second planetary gear 6 that has come to this meshing position
2 transmits the rotation of the motor M in the direction of arrow 47b to the gear 57, so that the feeding roller 9 starts rotating in the direction of arrow 8a, that is, the feeding direction through the shaft 8.

On the other hand, the first planetary gear 53 rotates around the first sun gear 52 in the direction of the arrow 50b by the rotation of the motor M in the direction of the arrow 47b and moves away from the meshing position with the gear 57.

The drive cam 7 fixed to the shaft 8 is rotated in the direction of the arrow 8a by the rotation of the gear 57, so that the stop position lift surface 7b of the drive cam 7 and the follower portion 4b provided on the sheet material loading table 4 are connected. The engagement is released, and then the sheet material mounting table 4 is lifted by the tensile force of the spring 5.

The uppermost sheet material S ₁ of the plurality of sheet materials S is moved by the raising of the sheet material mounting table 4 and the feeding roller 9 is rotating.
Since the uppermost sheet material S ₁ comes into contact with the contact member 1,
It is fed in the 0 direction. The abutting member 10 abutted against the moving sheet material S causes an angle change in the traveling direction of the sheet material due to the moving force of the sheet material S.

In FIG. 7, the feeding roller 9 is further rotated in FIG. 6, the uppermost sheet material S ₁ is further moved, and the leading end portion of the abutting member 10 and the leading end portion of the sheet material S ₁ are aligned. It shows that it is in a balanced state. The left and right two feeding rollers 9 are made of chloroprene rubber, nitrile rubber, silicon rubber or the like having a high friction coefficient, and a plurality of sheet materials S loaded on the sheet material loading table 4 are pressed by the force of the spring 5 with a pressing force F ₀ of 2 It is pressed against the individual feeding rollers 9.

A friction coefficient of μ ₁ is provided between the feeding roller 9 and the sheet material S _1, and then a friction coefficient of μ ₂ is provided between the sheet material S ₁ and the second sheet material S _2. In addition, the sheet material S ₂ and the third sheet material S ₃ have a friction coefficient of μ ₃ , and the fourth and subsequent sheet materials also have a predetermined friction coefficient.

[0052] friction coefficient mu ₁ and mu ₂ has μ ₁ »μ ₂ the relationship. Therefore, when a plurality of sheet materials S stacked on the sheet material stacking table 4 are pressed against the surface of the feeding roller 9 by the force of F ₀ by the force of the spring 5, the uppermost sheet material S ₁
Hits the abutting member 10 with a moving force F ₁ of F ₁ = F ₀ (μ ₁ −μ ₂ ). On the other hand, the moving force F ₂ of the second and subsequent sheets is F ₂ = F
Becomes a small value in comparison with the μ ₂ ≒ μ ₃ because F ₁ at (μ ₂ -μ _3).

Here, the abutting member 1 will be described with reference to FIG.
The first separation action of 0 will be described.

The abutting member 10 is the uppermost sheet material S ₁
In the state of S ₁ -a, the lower end of the abutting member 10 is fixed to the guide member 11 in the state of 10 a inclined to the feeding roller 9 side from the perpendicular 68 with respect to the feeding direction 67 by α degrees.

[0055] Per per abutment member in the state shown in the sheet S ₁ is 10a at the position of the point 10c, further abutting member 10 attached by the moving force F ₁ described in FIG. 7 occurs <br/> angular change α in the process consisting of 10a in a state of 10b Te, the sheet _{S 1} is in a state of _S 1 -b from the state of _S 1 -a. Abutment a distance between the bent portion 10e of the position 10c Like abutment member 10 of the member 10 and _{L 1,} abutment member 10 is 10a when the state of 10b 10c of the position of the state is 10d of Position, and the change amount in the vertical direction 68 with respect to 10c at 10d is T
Then, T = L ₁ (1-cos α). On the other hand, the moving force F acting on the second and subsequent sheet materials S ₂ , S ₃ , ...
₂ component force F _9, F ₁₀ serves to press the sheet S ₂ following the tip to the surface of the sheet material stacking plate 4.

At the tip of each of the sheet material S ₁ and the sheet material S ₂ or less, the sheet material S ₂ or less is pressed between the sheet material S ₁ and the sheet material S ₂ while being pressed against the surface of the sheet material loading table 4. The occurrence of the separation of T is referred to as a first separation action.

The first separating action has the following excellent effects. The first effect is that the contact member 10 is fixed at the position 10b in the vertical direction 68 with respect to the direction 67 in which the sheet material S ₁ moves from the state of S ₁ -a. When the sheet material S ₁ is in the state of S ₁ -a due to the angle change β from the position, the leading end of the sheet material S ₁ contacts the contact member 10
Suppose you start to slide on the surface of. On the other hand, the contact member 1
From the position of 0 to 10a, the sheet material S ₁ is S ₁ -b as described above.
In this state, the angle change at which the tip starts sliding on the surface of the contact member 10 is β-γ, which is smaller than β at which the contact member changes angle from the position 10b. When the uppermost sheet material S ₁ starts sliding on the surface of the abutting member 10 with a value of β−γ, the surface of the abutting member 10 with which the second and subsequent sheet materials S ₂ , S ₃ , ... Since it is smaller than β-γ, the sheet materials S ₂ , S ₃ , ... Are more prevented from sliding off the surface of the abutting member 10.

Further, the second and subsequent sheet materials S ₂ , S ₃ , ...
Hits the abutting member 10 with a moving force F ₂ smaller than the moving force F ₁ of the sheet material S ₁ . Component force F _9, F ₁₀ of the moving force F against member 10 the angle change sheet material 2 and subsequent sheets in the course of performing alpha S ₂ For the _1, S ₃ of the sheet S ₁ F ₂ is The second and subsequent sheet materials S ₂ , S ₃ , ...
2 but by the movement of the uppermost sheet S ₁ so preventing the performing the first separating action together with the sheet material S ₁ Top
The so-called double feeding in which the sheet materials S ₂ , S ₃ , ... After the first sheet are taken out is reliably prevented.

The first separating action is particularly effective for separating a thin sheet material, for example, a so-called weak sheet material having a paper thickness of about 0.065 mm.

The magnitude of the angle α for performing the first separating action varies depending on the length L _{1 of} the abutting member 10, the bending elastic modulus of the abutting member 10 and the like. It is preferable to set in the range of 5 ° or more and 35 ° or less.

The second effect of the first separating action is that when the feeding of the sheet material S ₁ is completed and the stacking table 4 is lowered to remove the pressing force on the upper surface of the sheet material S, the second sheet is separated. The force of the contact member 10 that acts on the leading ends of the sheet materials S ₂ , S ₃ , ... After the eye and returns the sheet material S to the set position shown in FIG.
Pressure member 10 is sheet S ₂ For because of the stronger close 10a by the feed roller 9 from the position of 0b, S _3, the operation to return draw ... are intended to be reliably performed.

In FIG. 7, the uppermost sheet material S ₁ is F ₃
= F ₁ cosA ₁ is applied to the abutting member 10 to change the angle A ₂ + A ₃ from the position of 10 a, at which point the sheet material S ₁ and the tip of the abutting member 10 are point 69.
It is considered that the sheet materials S ₁ have stopped moving in a state where they are balanced by their mutual elastic forces.

[0063] force of F ₃ press the pressure member 10 attaches the sheet S _{1, 4} the friction coefficient μ of the tip and abutment member 10 of the sheet S _1, the tangent 70 at the point 69 of the sheet S ₁ the with When the angle formed by the tangent line 71 at the point 69 of the contact member 10 is θ °, F ₄ = F ₃ cos θ ° F ₅ = F ₃ sin θ ° (1) F ₆ = μ ₄ F ₃ sin θ ° Therefore, F ₄ −F _{6> 0 F 3 (1-} μ 4 tanθ °)> 0 θ °> tan -1 1 / μ 4 ... (2) comprising sheet material S ₁ at theta ° is sliding out the surface of the pressure member 10 month.

A perpendicular line 73 from the feeding direction 72 through the point 69
A ₁ r is the angle formed by the vertical line 74 from the point 69 of the tangent line 70.
When ad sheet S ₁ is ^{_{A 1 ≒ F8L 2 2 K 1}} ... (3) K 1 = 1/2 × E 1 × I 1 ... (3) ' However K ₁ = elasticity of A ₁ of the sheet S ₁ = that flexed in the deflection angle (rad) _{L 2} = become the second moment of the flexure length E ₁ = Young sheet S ₁ ratio I ₁ = sheet S ₁ sheet S ₁ angle of the sheet S ₁ Therefore, F ₅ ′ = F ₅ = F ₈ cosA ₁ ° (where A ₁ ° = A ₁ × 180 ° / π) becomes (4) due to the above balance.

The angle formed by the perpendicular line 73 and the tangent line 71 is A ₂ r
Assuming ad, the contact member 10 has A ₂ ≈F ₇ L ₃ ² K ₂ (5) K ₂ = 1/2 × E ₂ × I ₂ × n (5a) where K ₂ = elasticity of the contact member 10. Degree A ₂ = Deflection angle (rad) of the contact member 10 L ₃ = Deflection length of the contact member E ₂ = Young's modulus of the contact member 10 I ₂ = Second moment of area of the contact member n = Contact The number of members 10 (n = in this embodiment)
2) By flexing at an angle, due to the above balance, F ₅ = F ₇ cosA ₂ ° (where A ₂ ° = A ₂ × 180 ° / π) (6).

On the other hand, the angle between the tangent line 70 and the line segment 75 orthogonal to the perpendicular line 73 and the point 69 is A ₁ °, and the angle between the line segment 75 and the line segment 76 orthogonal to the tangent line 71 is A ₂ °.
From the above relation, θ ° + A ₁ ° + A ₂ ° ≈90 ° (= π / 2 rad) (7)

From the equations (1), (4) and (6), F _{3 in the} balanced state is F ₃ sin θ ° = F ₈ cosA ₁ ° = F
_{From the} relationship of ₇ cosA ₂ °, F ₃ = F ₈ cosA ₁ ° / sin θ ° = F ₇ cosA ₂ ° / sin θ ° (8) Therefore, the moving force larger than F ₃ obtained from the above formula (6) is the feeding roller. When applied to the sheet material S ₁ by 9, the tip of the sheet material S ₁ comes out from the tip of the abutting member 10 and is completely separated from the _second and subsequent sheet materials S ₂ , S ₃ , .... This separating action is called the second separating action.

From the equation (2), if θ ° is a value determined only by the friction coefficient μ _{4, then} from the equation (5), A ₁ ° + A ₂ ° ≈90 ° −θ ° = constant (9)

The value of the elasticity K ₁ of the sheet material S ₁ forming the equation (3) greatly changes depending on the type of the sheet material S. For example, assuming that the elasticity of thin paper having a thickness of 0.065 mm is K ₁ -a and the elasticity of postcards and envelopes is K ₁ -b, K ₁ -b / K ₁ -a≈13 (10).

The θ ° for performing the second separation in the equation (9) is A ₁ ° >> A ₂ ° for thin paper. That is, in the separation of thin paper, the deflection angle of the sheet material itself greatly contributes to the separation.

On the other hand, for thick paper such as postcards, A ₁ ° ≧ A ₂ °. That is, the deflection angle of the contact member 10 greatly contributes to the separation. When performing the separating action, it is necessary to reduce the value of A ₂ ° in the equation (9) as much as possible in order to prevent the double feeding of the second and subsequent sheets. A ₁ ° in equation (3)
The value of the flexure length L ₂ of the sheet material S changes with the square of the value of K ₁ as expressed by the above formula (10), but the influence of the formula (10) on the deflection angle A ₁ depends on the appropriate setting. Can be reduced.

As L ₂ is increased, the deflection angle A ₁ is increased for thick paper, which is advantageous, but for thin paper, the second and subsequent papers are also easily deflected and double feeding occurs. When L ₂ is decreased, the deflection angle A _{1 of} thin paper is reduced, which is advantageous, but the deflection angle A _{2 of the contact} member 10 is increased because the deflection angle A _{2 of} thick contact paper is increased. Get up. From the above results, good second separation was possible by setting the elasticity K ₁ of the sheet material S within the range shown by the equation (10) so that L ₂ = 15 to 25 mm.

In FIG. 6, the leading end of the sheet material S ₁ that has passed through the leading end of the abutting member 10 is guided upward by the inclined surface 11a of the guide member 11 to guide the sheet material S _1.
The leading edge of ₁ rises, and due to this rising, the leading edge of the sheet material S ₁ moves beyond the apex 11b and then moves toward the contact position between the transport roller 13 and the first pinch roller 16.

Next, correction of skew of the sheet material that has been separated and sent will be described.

In FIG. 9, when the tip of the separated sheet material crosses the photo sensor PH, the photo sensor PH generates a signal, and based on this signal, the controller 34 in FIG. 2 causes the motor M to move the distance L ₅ + α (α = Marginal value = 2
(About 5 mm) The pulse number P ₄ corresponding to the rotation is performed, and then the pulse is temporarily stopped. The leading end of the sheet material S ₁ is moved by an arrow 49b by the feeding roller 9 that responds to the rotation of the number of pulses of the motor P _4.
Conveyance roller 13 and first pinch roller 16 that are rotating in the reverse direction
The contact position 77 of the sheet material S1 is applied, and the movement of the tip of the sheet material S ₁ is prevented.

When the feeding roller 9 is still rotating while the movement of the sheet material S ₁ is blocked, the feeding roller 9 rotates while slipping on the upper surface of the sheet material S ₁ .

When the sheet material S ₁ is skewed, one tip end comes into contact with the contact position 77 first and the movement of one tip end stops, but the other tip end moves, so that the sheet material is Rotate around one tip. By this rotation, the leading edge of the sheet material S ₁ is aligned in parallel with the contact position over the entire width thereof, and thus the skew is corrected.

After the motor is rotated by the number of pulses of P ₄ , the motor M is rotated in the forward direction which is the direction of the arrow 47a by the number of pulses of P ₅ corresponding to the distance L ₆ conveyed by the conveyance roller 13 (from FIG. 4). (The state shown in FIG. 3). Roller 9 feeds the rotation number of pulses P ₅ of the motor M is performed further rotation pushing the leading edge of the sheet S ₁ to the contact position 77, the leading end of the sheet S ₁ which is pushed in the arrow of the conveying roller 13 It is conveyed to the distance L ₆ by the rotation in the opposite direction to 49b.

The correcting means for the defective feeding and the defective recording positioning will be described with reference to FIGS. 9 and 24. FIG. 24 is a flow chart showing the operation contents of the feeding device section. The symbol + (plus) in the frame in the drawing indicates the forward rotation of the motor M in the arrow 47a direction, and the- (minus) indicates the direction of the motor M arrow 47b. It represents reverse rotation. Further, the numbers shown in parentheses outside the frame represent the number of steps of the control procedure of the computer in the control circuit 34. In addition, the feeding roller 9 and the conveying roller 1
A pulse drive motor is used for the motor M in FIG.

In FIGS. 9 and 24, the number of rotation pulses of the motor M in each step is P ₁ = the number of pulses required for the second planetary gear 61 to revolve to A ₅ ° P ₂ = the tooth-missing position of the gear 57 Is the number of pulses P ₃ corresponding to an angle A ₄ ° of rotating from the meshing position of the first planetary gear 53 to the meshing position of the second planetary gear 61 = the distance L ₄ + α (α = 2 to 5 mm) of the feeding roller 9 The number of pulses P ₄ corresponding to the rotation of the feeding roller 9 = the number of pulses P ₅ corresponding to the rotation of the feeding roller 9 corresponding to the distance L ₅ + α (α = 2 to ₅ mm) P ₅ = the distance L _{6 of the} conveying roller 13 The number of pulses P ₆ corresponding to the rotation corresponding to the above is equal to the number of pulses corresponding to the conveyance roller 13 conveying an amount twice the length in the longitudinal direction of the maximum size sheet material in the use range.

The operation procedure of the motor M will be described with reference to FIG. In step (1), the second planetary gear 61 meshes with the gear 57 and the rotation of the motor M is stopped at the same time by the motor M which started to rotate at the start. Next, the motor M is reversed by the loop between step (2) and step (5) until the count value T of the counter in step (3) reaches P ₂ . When the photo sensor PH is turned on in step (4) during the reverse rotation of the motor M, the count value T is checked in step (6).

[0082] Step (6) at T <that it P ₃ Step (7) to go the leading edge of the sheet material S ₁ is per sheet S ₁ per contact position between the conveying roller 13 in the reverse first pinch roller 16 obliquely Row correction is performed.

Next, in step (8), the motor M is normally rotated,
The leading edge of the sheet material S ₁ is conveyed to a predetermined recording position L ₆ .
From now on, the sheet material S ₁
The image is recorded on.

When it is determined that T> P ₃ in step (6), the sheet material S is not processed even if the operation of step (7) is performed.
The tip of ₁ may not hit the contact position 77. That is, when T> P _{3 in the} relation of P ₂ = P ₃ + P ₄ , the toothless portion 57 a of the gear 57 is in the middle of rotation of the pulse number of P ₄ of the motor M, as shown in FIG. Since it comes to the meshing position with the gear 61, the rotation of the feeding roller 9 is stopped, and the feeding roller 9 feeds the sheet material by an amount less than the number of pulses of P ₄ . Such a phenomenon is caused by, for example, a sheet material having a low friction coefficient μ, the feeding roller 9
Occurs when the sheet material is fed while the feeding roller 9 slips and the feeding roller 9 slips.

When it is determined that T> P ₃ in step (6), steps (9) and (10) are performed, and the leading edge of the sheet material is once held in the conveying roller 13, and then the conveying roller is moved to P in step (11). _{When the} same number of pulses as ₅ is reversed, the sheet material S ₁ is returned to the feeding roller side, and the leading end of the sheet material S ₁ stays near the contact portion 77. Immediately after performing step (11), the process proceeds to step (1). Since the photo sensor PH of the sheet material S ₁ has already been turned on, the procedure goes from step (4) to step (6). In step (6), T <P ₃ is always satisfied, so the procedure proceeds to step (7), and then step (7). 8) and the normal recording operation is performed.

Even if T = P ₂ in step (5), if the photosensor PH in step (4) does not turn on, the process proceeds to step (12) and the motor M is P ₃ + P ₄
When the photo sensor PH is not turned on in step (13) after performing a considerable amount of normal rotation, it is determined that the sheet material is in an unfeedable state upstream of the photo sensor PH, and the control mode is set to the feeding error mode. To

The controller 34 displays the feeding failure by using the LED light emitting display means or the liquid crystal display means provided on the operation electric board 33 in FIG. 2, while the buzzer generates a warning sound to display the error. Notify the user. The user can move the sheet material loading table 4 according to the error display
The upper sheet material is pulled out, it is confirmed that there is no problem such as bending of the leading edge of the sheet material, and the sheet material is placed on the sheet material stacking table 4 again to perform the feeding operation.

In step (13), the photo sensor P
When H is ON, it is determined that the front end of the sheet material S ₁ is located downstream of the photo sensor PH, and P ₆ is determined in step (14).
After the sheet material corresponding to the number of pulses is completely discharged and conveyed to the outside of the recording apparatus, the presence / absence of the sheet material is detected in step (15). If the photosensor PH is not turned on, the sheet material is completely discharged. When it is judged that it has been done, the sheet can be fed again.

On the other hand, when the photo sensor PH is ON, it is judged that the sheet material is caught at a position somewhere downstream of the photo sensor PH (jam) and cannot be discharged by the rotation of the conveying roller. Set the control mode to feed error. In accordance with the feeding error display, the user pulls out the sheet material from the inside of the apparatus, confirms that there is no problem such as bending of the leading edge of the sheet, and again places the sheet material on the sheet material loading table 4 to restart the feeding operation. .

Next, the conveyance of the sheet material after correcting the skew of the sheet material S ₁ will be described.

The controller 34 rotates the output gear 47 of the motor M in the direction of arrow 47a in FIG. 1 according to the total driving pulse number P _{T of the} motor M and the passage signal of the sheet material S generated by the photo sensor PH.

In FIG. 10, the rotation of the gear 47 causes the transport roller 13 to rotate in the direction of arrow 49a. On the other hand, at the same time, since the first carrier 55 rotates about the shaft 50 in the direction of the arrow 50a, the small planetary gear 53b of the first planetary gear 53 can be rotated.
And the gear 57 instantly mesh with each other. Due to this meshing, the feeding roller 9 rotates in the feeding direction and pushes the leading end of the sheet material S1 into the contact position 77 between the conveying roller 13 and the first pinch roller 16. The leading edge of the sheet material S1 pushed in passes through the contact position 77 by the rotation of the transport roller 13.

Since the feeding roller 9 rotates while pressing the upper surface of the sheet material S until the sheet material S ₁ passes through the contact position 77, as described with reference to FIG. A moving force F ₂ sufficiently smaller than F ₁ also acts on S ₂ , S ₃ , ..., And the angle change of the abutting member 10 caused by the moving force F ₂ is at the point where the sheet material S ₂ abuts on the abutting member 10. Since θ ° constituting the formula (2) is θ ° ≧ tan ⁻¹ 1 / μ ₄ (11), the tips of the _second and subsequent sheet materials S ₂ , S ₃ , ... Are the surfaces of the contact member 10. Does not slip, so that the tip of the sheet material does not exceed the tip of the abutting member.

On the shaft 8, the gear 57, the drive cam 7, and the feeding roller 9 are integrated in a state where the relative phase relationship is maintained constant with respect to their respective directions. The drive cam 7 includes a drive lift surface 7a, a maximum lift surface 7b, and a stop position lift surface 7d having a smaller lift amount than the maximum lift surface 7b, the maximum lift surface 7b, and an inclined surface 7c connecting the stop position lift surface 7d. have.

The rotation of the small planetary gear 53b of the first planetary gear 53 causes the drive cam 7 to move through the gear 57 and the shaft 8 and the arrow 8a.
Rotate in the direction. During this rotation, the drive lift surface 7a and the follower portions 46 provided on both the left and right ends of the sheet material stacking base 4 contact each other, and the rotation of the drive cam 7 causes the sheet material stacking base 4 to move the spring 5 around the shaft 4a. Rotates downward against the force.

By the downward rotation of the sheet material loading table 4, the upper portion of the sheet material S is released from the state where it is pressed by the feeding roller 9 by the force of the spring 5, and no pressing force is applied. Therefore, the second and subsequent sheet materials S ₂ , S ₃ , ...
Of the second and subsequent sheet materials S ₂ , S _3, ... due to the restoring force of the abutting member 10.
Moves in the reverse feeding direction and moves downward in accordance with the downward rotation of the sheet material loading table 4.

By the above-mentioned movement of the second and subsequent sheet materials S ₂ , S _3, ..., Since the sheet material disappears from the surface of the abutting member 10 on which the sheet material abuts, the angle change of the abutting member 10 is the same as the first angle change. Return to the absence. In this way, the load related to the contact member 10 is released.

In the state shown in FIG. 11 in which the force for pressing the upper surface of the sheet material S is released, the apex 1 of the guide member 11
1b prevents the sheet material S ₁ from sagging downward from a predetermined position. That is, the regulated sheet material S
_Between the lower surface of ₁ and the tip of the abutting member 10, a predetermined gap 7
The positions of the apex 11b and the tip of the abutting member 10 are appropriately set so as to make 8 points.

By providing this gap 78, the tip end of the abutting member 10 is not interfered with by the sheet material S _{1 in the} process of returning the abutting member 10 to the state where there is no change in the initial angle, and therefore the returning operation is sure. You can do it. Further, by providing the gap 78, it is possible to prevent an abnormal noise from being generated by interfering with the contact member 10 while the uppermost sheet material S ₁ is moving.

As the sheet material feeding means, the feeding roller 9 consisting of the long radius portion and the short radius portion should rotate while contacting the sheet material by the high friction surface such as rubber on the surface of the long radius portion. The sheet material is sent out by, and after the sheet material is sent out, the short radius portion is made to face the upper surface of the sheet material. Since the flange portion 9a made of a low-friction material projects in the short radius portion and the high friction surface is buried, when the sheet material is fed out and the transport roller 13 starts transporting, the short radius portion faces the upper surface of the sheet material. , The bending amount of the sheet material is reduced by the difference between the length and the length of the short radius portion, and at the same time, a part of the flange portion 9a comes into contact with the upper surface of the conveyed sheet material to prevent the sheet material from floating. While guiding the conveyance. At this time,
Since the flange portion 9a is made of a low friction material,
Since the resistance during the transportation of the sheet material is reduced and the fluctuation of the load applied to the motor M that is the drive source of the transportation roller 13 is also reduced, the transportation accuracy of the sheet material by the transportation roller 13 is improved.

11 and 12, the maximum lift surface 7b of the drive cam 7 passes through the contact portion 46a of the follower portion 4b, and at the same time, the toothless portion 57a of the gear 57 becomes the small planetary gear 53b of the first planetary gear 53. Since it comes to the meshing position of
The rotation transmission to the gear 57 by the small planetary gear 53b is cut off, and the rotations of the gear 57 and the feeding roller 9 are stopped.

Immediately after the rotation of the gear 57 by the first planetary gear 53b is stopped, the contact portion 46a of the follower portion 4b presses the inclined surface 7c of the drive cam 7 by the force F _{11 of the} spring 5, so that the inclined surface 7c is divided. Force F ₁₂ acts and drive cam 7 and gear 5
7 rotates a small amount in the direction of arrow 8a, and when the contact portion 46a slips on the inclined surface 7c and reaches the stop position lift surface 7d of the drive cam 7, the rotation of the drive cam 7 stops.

The lift surface 7d of the drive cam 7 and the contact portion 46a of the follower portion 4b are formed in an arc shape having substantially the same radius, and stop when they are fitted. At this time, the force (spring 5) applied to the drive cam 7 from the follower portion 4b.
Elastic force) is in the direction toward the axis of the shaft 8 (arrow in FIG. 12)
The lift surface 7d and the abutting portion 46a cause friction to surely stop.

In FIG. 12, when the contact portion 46a is on the stop position lift surface 7d, the phase of the toothless portion 57d of the gear 57 is the phase of the small planetary gear 53b of the first planetary gear 53 and the toothless portion 57.
It is slightly ahead of the position where the meshing of a was cut off. Thus, by advancing the phase of the toothless gear by a predetermined amount, the teeth in the vicinity of the toothless portion of the gear 57 are completely retracted from the position where they mesh with the teeth of the small planetary gear 53b. Since the interference between the teeth is completely eliminated, it is possible to eliminate the problem that vibration or abnormal noise is generated due to the interference between the two teeth. The drive cam 7 and the follower portion 4b
The relationship with and may be reversed. That is, the drive cam 7 side may be convex and the follower portion 4b may be concave.

In FIG. 12, when the motor M rotates by the number of pulses P ₄ corresponding to the distance L ₆ , the leading end of the sheet material S ₁ advances from the contact position 77 to the position advanced by L ₆ to the conveying roller 1.
3 is conveyed. The length L ₆ is the controller 3 so that the printing position of the head nozzle of the ink ejection portion 27a of the recording head 27 is a predetermined length L ₇ from the front end of the sheet material S _1.
4 is set.

The user can instruct the value of L ₇ such as 1.5 mm and 3 mm to the controller 34 of the printer through the computer connected to the recording apparatus.

Here, while the feeding roller 9 and the conveying roller 13 convey the leading edge of the sheet material S ₁ to the position L ₆ , the contact portion 46a of the follower portion 46 must be the stop position lift surface of the drive cam 7. It must be in contact at position 7a. Figure If when uncertainty abutment of the abutment portion 46a and the lift surface 7a by reducing the length L ₇ comes in 12, first the length L was set L ₇ sufficiently large value ₆ is carried out, and then the carrying roller 13 is rotated in the reverse direction to carry out reverse feeding of a predetermined length L ₁₃ (L ₆ > L ₁₃ ). Send ₁₄ forwards.

As described above, the above operation makes it possible to arbitrarily change the printing position length L ₁₄ while keeping the length L ₆ constant, and thus the lift surface 7 a and the contact portion 46 a of the follower portion 46. The contact is ensured.

Further, by carrying out the reverse feed of the length L _{13 and then} the forward feed of the length L ₁₄ , the rotation of the motor M is rotated.
The backlash of the gear means that is transmitted to 3 becomes 0, and the fluctuation of the conveyance accuracy of the conveyance for recording performed by the conveyance roller 13 after the conveyance of the length L ₁₄ can be made extremely small.

In FIGS. 1 and 12, the recording head 27
While the carriage 27 reciprocates in the main scanning direction on the sheet material S ₁ fed to the printing position of the controller 34,
In accordance with this instruction, ink is ejected from the ejection portion 27a of the recording head 27 to record a predetermined image on the sheet material S ₁ .
When the recording of one line is completed, the controller 34 controls the motor M to feed the sheet material S one line in the sub-scanning direction.

By repeating the above operation, the recording head 27 records characters and images over the entire surface of the sheet material S ₁ .

[0112] the sheet S ₁ when the sheet material S ₁ is to move in the sub-scanning direction by the conveying roller 13 is a major arc shape is regulated by the vertex 11b of the flange portion 9a and the guide member 11 of the feed roller 9 Although it moves, only a low contact resistance acts between the guide member 11 and the sheet material S ₁ , so that the backward load when the transport roller 13 rotates is extremely small.
When the rearward load is extremely small, the fluctuation of the load applied to the motor M is also small. Therefore, the conveyance accuracy of the conveyance roller 9 is improved, and as a result, the recording accuracy by the recording head 27 is improved and the image quality is improved.

In FIGS. 1, 2, and 12, the sheet material S
_When the rear end of ₁ is detected by the photo sensor PH, the controller 34 predicts the length L ₈ from the detection position of the photo sensor PH to the rear end nozzle position of the ink ejection portion 27a, and records within the length L _8. After recording by the head 27, the conveying roller 13 and the discharge roller 20 are continuously rotated by a predetermined amount to discharge the sheet material S ₁ from the discharge port 1b in FIG.

After continuous rotation of the discharge roller 20 by a predetermined amount, the controller 34 carries out the next sheet material S feeding operation if there is an instruction from the computer connected to the recording apparatus.

[0115] In FIG 1, the thickness length of the second moment ^{_{Ia Ia = b 1 h 3/}} 12 ... (12) However b ₁ = width length of the sheet material Sa h = sheet Sa wide sheet Sa width Become.

[0116] second moment Ib of the sheet Sa and it is also the thickness the same homogenous the length of the width direction, for example 1/2 against Sa sheet Sb is ^{_{Ib = b 2 h 3/12}} = b 1 h ^3/2 × 12 = the Ia / 2 ... (13) However b ₂ = b _1/2 = the thickness length width length h = sheet Sb of the sheet Sb.

In the equations (3) and (3) ', I ₁ = Ia,
When the relationship between the deflection angle Aa of the sheet material Sa and the sheet material Ab is calculated by substituting I ₁ = Ib and the equation (13), Ab = 2Aa = F ₈ L ₂ ² K ₁ (14) Therefore, Aa = (F ₈ / 2) It becomes L ₂ ² K ₁ .

That is, in order to set Aa = Ab, the force F ₇ for deflecting the sheet material b by the abutting member 10 is F ₇ × (1/2) from the relationship of the equations (4) and (6). You can do this.

From one of the methods (5) and (5) ', F ₇ = A ₂ × 2 × E ₂ × I ₂ × n / L ₃ ² (15) and the number of the abutting members 10 in the equation (15) is obtained. Force F for bending the sheet material Sb by changing the value of n from 2 to 1.
₇ can be halved.

In the above description, an example in which the number of the abutting members 10 is two has been described. However, in the case of supporting various sheet material sizes, the abutting members 10 are proportional to the number of types of sheet material sizes. When the number of sheets is increased, the number of abutting members with which the sheet material abuts changes each time the size of the sheet material changes, and the relations of equations (13), (14), and (15) are formed, and 2 Deflection angle Aa of the sheet material that performs the separation action does not change significantly, and reliable separation is possible.

The abutting member 10 is based on FIGS. 13 to 16.
The shape of will be described. FIG. 13 is a perspective view showing a state in which the sheet material S hits the rectangular contact member 10.

In FIG. 13 and FIG. 14, the moving sheet material S is abutted on the guide member 11 so as to be bendable with the bending line 10e as a fulcrum. When a change is applied, a phenomenon occurs in which the central portion 10f of the abutting member 10 and the leading end portion Sc of the sheet material that abuts bends downward. When the tip portion Sc of the sheet material is bent, a loud noise may be produced when the tip portion gets over the tip of the abutting member 10. Further, especially in an environment of high humidity, the bent portion Sc may be bent downward, and the leading end Sc of the sheet material S may not be able to get over the leading end of the abutting member 10 and may become unseparable.

The end portion Sc of the sheet material S is bent downward so that the reaction force when the sheet material S hits and the contact member 10 bends is the reaction force F ₁₃ of the central portion 10f and the reaction force F of the end portion 10g. Because it is larger than ₁₄ .

Therefore, the one shown in FIG. 15 shows a shape in which the end Sc is prevented from bending downward, and a V-shaped notch is formed at the portion where the end Sc of the abutting member 10 abuts. There is. In this V-shaped shape, when the sheet material S hits the abutting member 10, the end portion Sc of the sheet material S
It never ends Sc is bent down so does not receive a reaction force F ₁₃ in FIG. 13.

On the other hand, at the point 10i where the V-shaped ridgeline 10h and the tip of the sheet material S intersect, the sheet material S shown in FIG.
Force F ₄ of the tip of the sliding member on the surface of the contact member 10 and this force F ₄
Component force F ₁₅ of works.

When the opening angle of the V-shape is 2A ₆ °, the component force F ₁₅ has a value of F ₁₅ = F ₄ / cosA ₆ ° (16). The leading edge of the sheet material S is increased to F ₁₅ direction while the upper ridge 10h sliding contact member 10 abut against the action of F _15. The tip of the sheet material S is prevented from bending under the tip Sc of the sheet material by rising in the F ₁₅ direction, and the tip of the sheet material S is slidable along the V-shaped ridge line while rising 3rd. The separation action is performed, and the separation ability is further improved.

The third separating action is remarkable in a thin sheet material. When the angle A _{6 of the} V-shape is made smaller, the component force F ₁₅ becomes smaller from the formula (16), and the third separating action becomes stronger, which is advantageous for increasing the separating ability, but at the other end. The portion Sc is likely to bend downward.

If the angle A ₆ ° is increased, the equation (16) is obtained.
Therefore, the component force F ₁₅ is increased, and the leading edge of the sheet material is easily lifted, so that the third separating action is weakened, and the sheet materials of the second and subsequent sheets are also lifted to easily cause double feeding. Experiments have revealed that the angle A ₆ ° is preferably in the range of 55 ° to 75 °. Note that a U-shaped notch may be used instead of the V-shaped notch.

In FIG. 15, the cross-sectional area of the abutting member 10 at the cross-sectional position of arrow 80 becomes smaller as the cross-sectional position goes up, and therefore the value of the second moment of area also becomes sharply smaller as it goes up. Since the cross-sectional area is reduced enough to go above equation _{(5), A 2 ≒ F} 7 L 3 K '2 of the V-shape than the elasticity K ₂ at ² K ₂ is increased and thus attached enough to go over deflection angle a _'2 at the tip of the abutting member 10 is larger than the a _2. Second separating action easier deflection angle A _'2 is as large as second and subsequent sheet material slipping is no longer reliable.

A shape that solves the problem of the V-shape in FIG. 15 will be described with reference to FIG.

The length in the width direction at the upper end of the abutting member 10 is L _9, and the length in the width direction of the bending position 10e is L _10.
By setting the shape such that L ₉ > L _10, the cross-sectional area at the cross-sectional position in the direction of arrow 80 is reduced so that the cross-sectional position changes little as the cross-sectional position goes upward. ₂ can be brought closer to A ₂ .

Further, since the length L ₉ in the width direction becomes smaller in the direction of the bending point 10e, when the leading end of the second and subsequent sheet materials S moves downward, the sheet material S is moved downward at the point 10j. The resistance force F ₁₆ that prevents movement is reduced and movement is facilitated.

In order to reduce the second moment of area at the bending position 10e of the abutting member 10, a plurality of holes 81 having a width L ₁₁ are provided on the line of the position 10e and the position 10e is provided.
The cross-sectional area on the line is reduced. The hole 81
Notches may be used instead of, and a combination of holes and notches may be used. When the abutting member 10 is easily bent at the bending position 10e, the deflection angle of the tip of the abutting member 10 is prevented from being suddenly increased toward the tip, and the second separating action is further improved.

Further, it is possible to increase or decrease the value of the width L ₁₁ of the hole 81 or increase or decrease the number of the holes 81 while keeping the lengths L ₉ and L _{10 of the} abutting member 10 in the width direction and the thickness t constant. The reaction force F ₁₄ in FIG. 13 can be arbitrarily adjusted according to the flexural characteristics of the sheet material used in FIG. The shape of the hole may be a circle or a triangle as long as the width L ₁₁ is the same. With respect to the effect of the holes, the same effect can be obtained even in the general rectangular shape shown in FIG.

In FIG. 16, a ridge portion 10k having an angle A ₇ ° smaller than the angle A ₆ ° opened in a V shape at a position of a short length L ₁₂ downward from the upper end of the abutting member 10.
By providing the sheet material S, the sheet material S is further subjected to a stronger separating action at the ridge portion 10k than the ridge portion 10h, so that the third separating action is further improved as compared with the V-shape shown in FIG.

According to the experiment, the length L ₁₁ is 1.5 mm to 3 mm.
mm, angle A ₆ ° is 50 ° to 75 °, angle A ₇ ° is 0 ° to
It is preferable to set in the range of 40 °.

The resin film used as the abutting member 10 is preferably a resin film having a high heat distortion temperature, a low water absorption rate, and a high folding strength, such as polycarbonate or polyimide. The thickness is preferably set in the range of 0.07 mm to 0.3 mm.

(Second Embodiment) FIGS. 17 and 18 show the second embodiment.
FIG. 17 is a schematic view showing the mechanism of the present apparatus, and FIG. 18 is a sectional view of the present apparatus. 17 and 18
2, the same members as those described in FIGS. 1 and 2 showing the first embodiment and members having the same functions are designated by the same reference numerals as those in FIGS. 1 and 2 and their detailed description is omitted.

The main difference between the second embodiment and the first embodiment is that the sheet material loading platform 82 is fixedly fixed to the side plate 3 and that the arm member that rotates about the shaft 83 is used. The paper feed roller 86 supported by the shaft 85 at the tip of the shaft 84 swings around the shaft 83, which will be described in detail.

In FIGS. 17 and 18, a gear 57 having a toothless portion 57a, a cam member 87, and a gear 88 are fixed to the shaft 8. A gear 89 and a gear 90 are fixed to a shaft 83 rotatably provided on the side plate 3, and the gear 89 meshes with the gear 88. An arm member 84 in which a plurality of arm elements are integrated by a horizontal stay member 84a is rotatably provided on a shaft 83.

A shaft 85 is rotatably provided at the tip of the arm member 84, and a feed roller 86 and a gear 91 made of rubber or the like are fixed to the shaft 85. The gear 90 and the gear 91 are always in mesh with each other. The diameter of the feeding roller 86 is smaller than that of the feeding roller 9 of the first embodiment. Therefore, since the amount of sheet material fed by one rotation of the gear 57 is reduced, the number of teeth of the gear 90 is made larger than that of the gear 91 to secure the rotation amount of the feeding roller 86.

The arm member 84 is urged to rotate in the clockwise direction by the spring member 92, one end of which is fitted to the shaft 83 and the other end of which is hooked to the horizontal stay member 84a. . Therefore, when the follower portion 84b provided on the arm member and the cam member 87 are disengaged from each other, the feeding roller 86 in FIG. 18 swings until it comes into contact with the surface of the sheet material stacking base 82 as shown by the chain double- dashed line. Take action.

Next, the feeding operation and the printing operation in the second embodiment will be described with reference to FIGS. 17, 18, and 19 to 23. 19 to 23 is a sectional view showing the main components for feeding the sheet material in Figure 17, the same members as the members shown in FIG. 17 in FIG. Are indicated by the same numbers.

In FIG. 18 and FIG. 19, the power source of the apparatus is O
When N, the motor M shown in FIG. 17 rotates in the direction of arrow 47a, that is, the conveyance roller 13 rotates a predetermined amount in the direction in which the sheet material S is conveyed in the sub scanning direction toward the discharge port 16 by the initialization operation command of the controller 34. Gear 5
3b idles at the toothless portion 57a of the gear 57, and the second planetary gear 62 has the arm 63a of the carrier 63 and the stopper pin 65.
It idles at a position where it comes into contact with the stop member, and lifts the stop surface 87b of the cam member 87 and the follower portion 8 provided on the arm member 84.
4b comes into contact with each other, the arm member 84 rotates counterclockwise, and the feeding roller 86 is separated from the sheet material stack base 82, that is, the state shown in FIG.

In this state, a plurality of sheet materials S are inserted between the sheet material loading table 82 and the feeding roller 86 and loaded on the sheet material loading table 82.

In FIG. 4 and FIG. 20, the controller 34
When the motor M rotates in the direction of the arrow 47b by a predetermined amount in response to the feeding command, the second planetary gear 62 revolves from the position where the second carrier 63 and the pin 65 are in contact with each other to the meshing position with the gear 57.

The second planetary gear 62, which has come into the meshing position, transmits the rotation of the motor M in the direction of the arrow 47b to the gear 57, so that it passes through the shaft 8, gear 88, gear 89, shaft 83, gear 90, gear 91, and shaft 85. The feeding roller 86 starts rotating in the feeding direction.

On the other hand, the cam member 87 is rotated by the rotation of the shaft 8, and the engagement lift position 87b of the cam member and the follower portion 84b are disengaged from each other, and the feeding roller 86 is moved to the uppermost sheet material S ₁ . It abuts and feeds the sheet material S ₁ . The fed sheet material S ₁ hits the abutting member 10 and changes the angle of the abutting member 10. The sheet member S ₁ is separated into one sheet by the abutting member 10 whose angle is changed up to the second separation angle, and then the sheet material S ₁ gets over the upper end of the abutting member 10 and is further guided upward by the slope 11a of the guide member 11. .

When the front end of the sheet material separated in FIG. 20 crosses the photo sensor PH, the photo sensor PH generates a signal, and the controller 34 in FIG. 18 causes the motor M to move the distance L ₁₃ + α (α = Margin value =
(2 to 5 mm) A corresponding number of pulses P ₄ are rotated in the reverse direction and then temporarily stopped.

The leading end of the sheet material S ₁ is applied to the contact position 77 between the conveying roller 13 and the first pinch roller 16 which is being reversed in the direction of arrow 49b by the roller 86 which responds to the rotation of the number of pulses of P ₄ of the motor. Movement of the tip is blocked. When the feeding roller 86 is still in the state of rotation while the movement of the sheet material S ₁ is blocked, the feeding roller 86 rotates while slipping on the upper surface of the sheet material S ₁ .

When the leading end of the sheet material S ₁ is skewed, _one of the leading ends comes into contact with the contact position 77 first and the movement of one of the leading ends stops, but the other leading end moves, so that the sheet is moved. The material rotates around one tip.

By this rotation, the leading end of the sheet material S ₁ is aligned in parallel with the contact position over the entire width thereof, and skew is corrected.

After the rotation of the number of pulses of P ₄ , the motor M performs the forward rotation of the number of pulses of P ₅ corresponding to the distance L ₆ conveyed by the conveying roller 13, which is the direction of the arrow 47a. The rotation of the number of pulses of P ₅ of the motor M causes the feeding roller 86 to rotate further to bring the leading end of the sheet material S ₁ into contact position 77.
Push into. The leading end of the pressed sheet material S ₁ is conveyed to the distance L ₆ by the rotation of the conveying roller 13 in the direction opposite to the arrow 49b.

20 and 24, the number of rotation pulses of the motor M in each step is P ₁ = the number of pulses required for the second planetary gear 61 to revolve to A ₅ ° P ₂ = the missing tooth position of the gear 57 Is the number of pulses P ₃ corresponding to an angle A ₄ ° of rotation from the meshing position of the first planetary gear 53 to the meshing position of the second planetary gear P ₃ = feeding roller 86 is distance L ₁₃ + α (α = 2 to 5 m
m) The number of pulses corresponding to performing a rotation corresponding to P ₄ = feeding roller 86 is distance L ₁₄ + α (α = 2 to 5 m)
m) The number of pulses corresponding to performing a corresponding rotation P ₅ = the number of pulses corresponding to performing a rotation of the transport roller 13 corresponding to the distance L ₆ P ₆ = the sheet material having the maximum size within the use range of the transport roller 13 The number of pulses is equivalent to transporting twice the length in the vertical direction.

The operation procedure of the motor M based on FIG. 24 is exactly the same as that described in the first embodiment with reference to FIGS. 9 and 24, and therefore the description thereof is omitted here.

When the controller 34 rotates the motor M by the number of pulses of P ₄ to feed the distance L ₁₃ and once stops it, the motor M in FIG. 17 is rotated in the direction of arrow 47a. Since the first carrier 55 rotates in the direction of arrow 50a while the first carrier 55 rotates in the direction of arrow 50a, the first planetary gear 53b meshes with the gear 57, so that the rotation of the motor M is transmitted to the feeding roller 86, and the feeding roller 86 moves. Rotate. The leading edge of the sheet material S ₁ rotates in the direction of arrow 49a by the rotation of the feeding roller 86.
Then, the leading end of the sheet material S ₁ passes through the contact 77 because it is pressed against the contact 77 of the first pinch roller 16.

The rotation of the gear 57 also rotates the cam member 87 , and the drive lift surface 87a of the cam member 87 and the arm member 8 are rotated.
The follower portion 84b of No. 4 abuts. When the cam member 87 further rotates, the arm member 84 rotates counterclockwise around the shaft 83 to separate the feeding roller 86 from the surface of the sheet material S ₁ .

Since the second carrier 63 rotates in the direction of arrow 59a by the rotation of the motor M in the direction of arrow 47a, the second planetary gear 62 revolves in the direction of arrow 59a away from the position where it meshes with the gear 57.

In FIG. 22, the maximum lift surface 87b of the drive cam 87 passes through the contact portion of the follower portion 84b, and at the same time, the toothless portion 57a of the gear 57 is brought into the meshing position with the small planetary gear 53b of the first planetary gear 53. Therefore, the rotation transmission of the small planetary gear 53b to the gear 57 is interrupted, and the rotations of the gear 57 and the feeding roller 86 are stopped.

Immediately after the rotation of the gear 57 by the first planetary gear 57b is stopped, the follower portion 84b has the spring member 9 shown in FIG.
Since the inclined surface 87c of the drive cam 87 is pressed by the force of 2, the drive cam 87 rotates clockwise, and the gear 57 also rotates a small amount in conjunction with this rotation. In FIG. 23, when the follower portion 84b slips on the inclined surface 87c and reaches the position of the stop position lift surface 87d of the drive cam 87, the rotation of the drive cam 87 is stopped, and thus the rotation of the gear 57 is also stopped.

Due to the small rotation of the gear 57, the phase of the stop position of the toothless portion 57a also advances by a small amount, and the toothless portion 57a is completely retracted from the meshing position of the first planetary gear 53 with the small planetary gear 53b. There is no problem that vibration or noise is generated due to the interference of both teeth when the wheel 53b idles.

22 and 23, the sheet material S ₁
When the feeding roller 86 pressing the upper surface of the sheet rotates in the clockwise direction, the second and subsequent sheet materials S ₂ are released from the pressing force and are easily moved in the reverse feeding direction, and the contact member 10 is restored. Due to the force, the second and subsequent sheet materials S ₂ return to the original set position. In this way, the load applied to the abutting member 10 is released. Second and subsequent sheet materials S ₂
Therefore, the feeding operation is always started from the set position, and therefore the angle change of the abutting member also starts from the set position, so that the same separating operation is always performed.

In FIG. 23, when the motor M rotates by the number of pulses P ₄ corresponding to the length L ₆ , the conveying roller 13 rotates in the direction of the arrow 49a to extend the leading end of the sheet material S ₁ from the contact position 77. It is sent out to the position of L _6. Recording head 27
The length L ₆ is set so that the printing position of the head nozzle of the ink ejecting unit 27a becomes a predetermined length L ₇ .

17 and 23, the recording head 2
While the carriage 27 reciprocates in the main scanning direction on the upper surface of the sheet material S ₁ fed to the printing position of 7, the ink is ejected from the ejection portion 27a of the recording head 27 according to the instruction of the controller 34, and a predetermined character and The image is recorded on the sheet material S ₁ .

When the recording of one line is completed, the controller 3
4 rotates the motor M in the direction of arrow 47 by a predetermined amount to feed the sheet material S ₁ for one line. By repeating the above operation, the recording head 27 records characters and images over the entire surface of the sheet material S ₁ .

In FIGS. 17, 18 and 23, when the rear end of the sheet material S ₁ is detected by the photo sensor PH, the controller 34 moves from the detection position of the photo sensor PH to the rear end nozzle position of the ink ejecting section 27a. Predict the length L ₈ ,
After the recording head 27 performs recording within the length L _{8, the} conveying roller 13 and the discharge roller 20 are continuously rotated by a predetermined amount, and the sheet material S is discharged from the discharge port 1b shown in FIG.
Discharge ₁ .

After the discharge roller 20 is continuously rotated by a predetermined amount, the controller 34 carries out the next sheet material feeding operation if instructed by the computer connected to the recording apparatus.

[0168]

As described in detail above, the present invention is
Due to the count value of the pulse motor from the time the pulse motor starts rotating in the second direction until the sheet material detecting means detects the leading edge of the sheet material, the leading edge of the sheet material does not hit the conveying roller which is rotating in the reverse direction. If the pulse motor is rotated by the first number of pulses in the second direction, the pulse motor is rotated by the second number of pulses in the first direction and then rotated by the second number of pulses in the second direction. Since the sheet material is fed by rotating the feeding roller again, the sheet material is not stopped without stopping the device if the sheet material can be fed even if the sheet material has not been fed within the predetermined time. The sheet material can be fed, the sheet material can be fed easily and efficiently, and the reliability of the apparatus is improved.

[0169]

[0170]

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration of a recording apparatus including a sheet material feeding device of the present invention.

FIG. 2 is a vertical sectional view of the recording apparatus shown in FIG.

FIG. 3 is a diagram showing a normal rotation state in a drive transmission mechanism of the sheet material feeding device of the present invention.

FIG. 4 is a diagram showing a reverse rotation state in the drive transmission mechanism of the sheet material feeding device of the present invention.

FIG. 5 is a side view showing a state before separation of the sheet material feeding device of the present invention.

FIG. 6 is a side view showing a state during separation of the sheet material feeding device of the present invention.

FIG. 7 is a side view showing a force relationship during separation of the sheet material feeding device of the present invention.

FIG. 8 is a side view showing a force relationship at the start of separation of the sheet material feeding device of the present invention.

FIG. 9 is a side view showing the feed amount of the sheet material of the sheet material feeding device of the present invention.

FIG. 10 is a side view showing a state in which the drive transmission mechanism of the sheet material feeding device of the present invention is switched from the reverse rotation state to the normal rotation state.

FIG. 11 is a side view showing a state when the feeding roller and the sheet material are separated from each other in the sheet material feeding device of the present invention.

FIG. 12 is a side view showing a state when the toothless portion of the gear is positioned after the feeding roller and the sheet material are separated from each other in the sheet material feeding device of the present invention.

FIG. 13 is a perspective view showing a state of force when the sheet material hits the separating member provided in the sheet material feeding device of the present invention.

FIG. 14 is a front view of the diagram shown in FIG.

FIG. 15 is a front view showing the shape of a separating member provided in the sheet material feeding device of the present invention.

FIG. 16 is a front view showing the shape of a separating member provided in the sheet material feeding device of the present invention.

FIG. 17 is a perspective view of a recording apparatus including another embodiment of the sheet material feeding device of the invention.

18 is a vertical cross-sectional view of the recording device shown in FIG.

FIG. 19 is a side view showing a state before separation of the sheet material feeding device according to the second embodiment of the present invention.

FIG. 20 is a side view showing the feed amount of the sheet material of the sheet material feeding device according to the second embodiment of the present invention.

FIG. 21 is a side view showing a state when the drive transmission mechanism of the sheet material feeding device according to the second embodiment of the present invention is switched from the reverse rotation state to the normal rotation state.

FIG. 22 is a side view showing a state when the feeding roller and the sheet material are separated from each other in the sheet material feeding device according to the second embodiment of the present invention.

FIG. 23 is a side view for explaining cueing of a sheet material in the sheet material feeding device according to the second embodiment of the present invention.

FIG. 24 is a flowchart diagram illustrating retry control in the sheet feeding device of the present invention.

[Explanation of symbols]

4 Sheet material loading platform (sheet material loading means) 9 Feed rollers (sheet material feeding means) 10 Contact member (separation means) 13 Conveyor rollers (conveying means) 53 First planetary gear 57 gears 57a missing tooth part 62 Second planetary gear PH sensor (sheet material detection means) M motor (driving source)

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI B41J 17/36 B41J 17/36 Z B65H 3/06 350 B65H 3/06 350A 9/14 9/14 (72) Inventor Hideaki Kawakami 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Takeshi Iwasaki 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Hideki Yamaguchi Ota-ku, Tokyo Shimomaruko 3-30-2 Canon Inc. (72) Inventor Hiroyuki Inoue 3-30-2 Shimomaruko, Ota-ku Tokyo Metropolitan area (72) Inventor Hitoshi Nakamura 3-30 Shimomaruko, Ota-ku Tokyo No. 2 Canon Inc. (72) Inventor Akira Kida 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (58) Fields investigated (Int.Cl. ⁷ , DB name) B6 5H 1/00-3/68 B65H 7/00-7/20 B65H 9/00-9/20

Claims (5)

(57) [Claims] 1. A sheet material stacking table for stacking a plurality of sheet materials, a feeding roller for contacting the sheet material stacked on the sheet material stacking table to feed the sheet material, and the feeding roller. A separation member for separating the fed sheet material,
Sheet material detecting means for detecting the sheet material on the downstream side of the separating member, a conveying roller for conveying the sheet material on the downstream side of the sheet material detecting means, and normal rotation of the conveying roller when rotated in the first direction. A pulse motor that rotates the conveyance roller in the reverse direction when rotated in a second direction, and the sheet material stacked on the sheet material stack table by rotating the pulse motor in the second direction and the sheet material. The feed roller is brought into contact with the sheet material, and the pulse motor is rotated in the second direction by the first pulse number after the sheet material detection unit detects the leading edge of the sheet material fed by the feed roller. The leading edge of the sheet material to the reversing conveying roller, and then the pulse motor is rotated in the first direction to cause the conveying roller to rotate in the normal direction. A sheet material feeding device for feeding downstream, wherein the pulse motor from the start of rotation of the pulse motor in the second direction until the sheet material detection means detects the leading edge of the sheet material. If it is determined that the leading edge of the sheet material does not hit the reversing conveyance roller, the pulse motor is rotated by the first pulse number in the second direction, and then the pulse motor is rotated. Is rotated by the second number of pulses in the first direction and the second number of pulses in the second direction, and then the feeding roller is rotated again to feed the sheet material. Sheet material feeder. 2. The sheet according to claim 1, wherein the separating member separates the sheet material by changing the angle with respect to the mounting portion when the sheet material fed by the feeding roller hits the sheet material. Material feeding device. 3. A guide member that guides the sheet material downstream of the separating member, wherein the separating member feeds the sheet material stacked on the sheet material loading table with respect to a vertical line with respect to a feeding direction. The sheet material feeding device according to claim 2, wherein the sheet material feeding device is fixed to the guide member in a state of being inclined to the feeding roller side. 4. The sheet material feeding device according to claim 1, wherein the sheet material fed from the sheet material feeding device is recorded by a recording means. Recording device. 5. The recording apparatus according to claim 4, wherein the recording unit is an inkjet recording head capable of ejecting ink.