JPS62247675A - Copying device - Google Patents

Abstract

PURPOSE:To facilitate the easy internal check of units when a trouble occures by forming a reading part where picture signals are outputted and a recording part where the recording is carried out based on those picture signals in different units. CONSTITUTION:A copying device 11 contains a reader unit 12 which reads the information on a document and a recorder unit 13 which records the informa tion on the recording paper. Both units 12 and 13 can be separated from each other and therefore shifted for installation, replaced, etc., in a simple way. Then an internal check is possible for each unit if a trouble occurs at either one of both units. Furthermore the original platen of the unit 12 can be moved back and force and right and left for adjustment by means of knobs 22-25. Thus the unit 12 can shift along two guide grooves of the unit 13.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field of the Invention] The present invention relates to a copying apparatus having an information reading section and a recording section.

[Prior art]

Copying devices in which information on a document is read by an information reading section and recorded on a copying member by a recording section are widely known, but such copying devices are usually housed in a single housing. It is something that

[Problems solved by the invention]

When the information reading section and the recording section are housed in one housing like this, it is extremely difficult to perform internal inspections because the mounting positions of each part to the housing are fixed. It has its drawbacks.

[Means and effects for solving the problem] Therefore, in the present invention, the information reading section and the recording section are housed in separate housings to facilitate internal inspection of each, and by unitizing them, By making it possible to handle and convert units, and by making the information reading part movable relative to the recording part, inspection of the recording part is made easier, and the above-mentioned drawbacks of the conventional system are eliminated. be.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is an external view showing a copying apparatus 11 to which the present invention is applied, and this copying apparatus 11 includes a reading unit 12 for reading information on a document, and a recording unit 13 for recording information on recording paper. It is made up of.

As shown in FIG.
The cover 15 is configured to press the document placed on the document table 14 against the document table 14.

A pointer 18°1 is provided adjacent to the document table 14, respectively.
Two display windows 16.17 having numbers 9 and 20.21 are provided and, by a mechanism as will be described in detail later, the legitimate child 2
2, the pointer 18 can be moved in the direction of the arrow X1, the legitimate child 23 can move the pointer 19 in the direction of the arrow X2, the legitimate child 25 can move the pointer 20 in the Y2 direction, and the legitimate child 24 can move the pointer 21 in the Y1 direction. be.

The function of such a pointer is that the document table 1
This is to instruct that information on the document belonging to the area outside 4 is not handled as recorded information.

For example, if we talk about the pointer 18, the area on the arrow F side of the extension straight line 26 of the pointer 18 is masked, and even if the original is placed in this masked area, the information in this part will not be This may not be recorded depending on the recording device.

Therefore, when there are four pointers as shown in the figure, only the information in the area surrounded by four dotted lines that virtually indicate the extension of each pointer is recorded by the recording device.

The internal structure of the reading device 12 as described above will be further explained with reference to FIGS. 3 and 4.

3 is a sectional view taken along line 3A-3A in FIG. 1, and FIG. 4 is a sectional view taken along line 4A-4A in FIG. 3, both of which schematically show only the arrangement of the main parts of the apparatus.

There are three guide rails 3 inside the casing 29 of the reading device 12.
0-1.30-2.30-3 are provided in parallel to each other, and a sliding member 31-1 is slidably provided on the guide rail 30-1.30-2. A sliding member 31-2 is slidably provided on the rail 30-3, and a flat base 32 is fixed to the sliding member 31.

From both ends of this base 32, arms 33-1.
33-2 is extended, and between the arms 33, translucent rod-shaped bodies (focusing light transmission bodies) whose refractive index decreases parabolically from the center in the radial direction are linearly arranged. The lens 34 is then fixed. It should be noted that such a lens is not limited to the above-mentioned convergent light transmitting body (it may be one in which minute lenses for obtaining a 1:1 magnification image are arranged in a straight line).

A light receiver (for example, CCD) 35 in which a large number of light receiving elements are linearly arranged is arranged on the base 32, and an optical image of the document placed on the document table 14 is transmitted to the light receiver by the lens 34. 35.

Further, a rod-shaped lamp 36 that is approximately equal to or longer than the lens 34 is provided between the arms 33 and is approximately parallel to the lens 34, and the light emitted from the lamp 36 effectively illuminates the document table 14. In this way, the reflecting mirror 37 is fixed.

By moving the base 32 constructed as described above on the guide rail 30, information on the document placed on the document table 14 is sequentially imaged onto the light receiver 35.

Therefore, if a clock signal is sequentially applied and the light receiving elements are sequentially read out, sequential signals obtained by raster scanning the original can be obtained from the light receiver 35.

In this embodiment, an explanation will be given on the assumption that an A4 size document is scanned with 3000 scanning lines, and 1 scanning line is divided into pixels by 2100 light receiving elements.

In addition, in order to perform the forward movement or the backward movement shown by the arrow R, in which the base 32 is driven at a constant speed in the direction of the arrow S on the guide rail 30,
It has a built-in motor, pulley, and wires,
Since such a drive system is well known, it is omitted from the drawing.

Note that in the following description, such a base 32. Receiver 3
5. Lens 34. The lamps 36 will be collectively referred to as the optical head 9.

FIG. 5 explains in more detail the mechanism for driving the hands 18, 19 by the heirs 22, 23.

That is, a guide rail 38 is fixed to the housing 29, and a base 39.4 with a pointer 18.19 is mounted on the guide rail 38.
0 is slidably fixed.

The bases 39 and 40 are constructed as shown in FIG.
The pole 42 is pushed into a groove 41 provided on the guide rail 38 to prevent the base 40 from rotating on the guide rail 38. .

A thread 46 is fixed to the base 40, and this thread 46
is a rotating shaft 50 of the eldest child 23 rotatably fixed to the casing 29 via pulleys 47, 48, and 49 fixed to the casing 29.
It is wound around a pulley 51 fixed to.

Therefore, by rotating the heir 23, the base 40 can be moved in the direction of the arrow x2. Base 3
9 is also driven by a similar configuration, and the subscript -
Such a configuration is indicated by a numeral with a 1 added thereto.

A reflector plate 52-1.52 is installed at the bottom of the base 39.40.
-2 is fixed, and the switch sw8 detects that the optical head 9, which has started driving to scan the document, has arrived at a position corresponding to this reflection plate 52, and the light receiver 3
The signal read out by scanning 5 is stored in a shift register to be described later.

To explain with reference to FIG. 5C, for example, the light receiver 35 is 21
Assuming that it is composed of 00 light receiving elements, 21
A 00 bit shift register is prepared, and the switch sw8 detects when the optical head 9 starts driving to scan the original and reaches the bottom of the base 39.40, and sends a 2100 clock signal to the light receiver 35. is applied to the receiver 35.
The pixel signals read out are stored in a 2100-bit shift register.

With this configuration, the positions of the reflecting plates 52-1 and 52-2 are stored in the shift register, so masking in the X direction can be performed using the output of this shift register.

Also, the pointer 20.21 that instructs masking in the X direction is
Since it has the same structure as the mechanism for instructing directional masking, corresponding members are designated by the same numbers with the suffix -1 added.

Therefore, the pedestal 39-1 is moved to the guide rail 38 by the eldest child 25.
−1 can be moved on, and the legitimate child 2
4 allows the base 40-1 to be moved on the guide rail 38-1.

However, the bottom of the base 39-1 has the base 39-1.
In place of the reflecting plates in 9.40, pole elements (hereinafter also referred to as switches SW6 and SW7) are fixed. As shown in FIGS. 3 and 5C, a part of the arm 33-2 of the optical head 9 has an optical head 9
A magnet 51-1 is fixed at a position facing the Hall element provided on the base 39-1, 40-1 when the base 39-1 and 40-1 are moved.

Therefore, while the optical head 9 is moving along the guide rail 3o in the direction of the arrow, the magnet 51-1 is moved from the base 39-
When facing the Hall element of 1.40-1, it is possible to obtain an output from the Hall element, so the switch SW6. Masking in the X direction can be performed using the output of SW7.

The reading device 12 and the recording device 13 as described above should have a unit configuration (each is housed in a separate housing, and the two guide grooves 27 to 1.27 provided at the top of the recording device 13).
-2 is movably provided. In the steady state of the reading device, the reading device 12 is fixed at the position shown in FIG. 1 by being locked by a mower 28 shown in FIG. 3.

Next, the recording device 3 will be explained in more detail.

An opening 54 is provided in a part of the housing of the recording device 13, and a cassette 53 in which recording sheets 55 cut to a predetermined size are stacked and stored is housed and fixed in the opening 54.

At the top of the cassette 53 installed in the housing, there is a paper feed roller 5 fixed to an arm 58 that is rotatable around a shaft 57.
Place 6. This paper feed roller 56 is constantly rotating and comes into contact with the top of the recording paper 55 stacked in the cassette 53 only when paper is being fed.When paper feeding is not required, the arm 58 is moved upward. It rotates to prevent the paper feed roller 56 and the recording paper 55 from coming into contact with each other.

Note that the paper feed roller 56 is widely known in copying machines and the like, so a detailed explanation thereof will be omitted.

Reference numerals 59-1 and 59-2 indicate a guide plate that guides the recording paper fed out from the cassette 55, and the recording paper 55 guided by this guide plate 59 passes through the timing roller 10.
An outer drum 64 is provided on the outside of a drum 63 which is held between a driven roller 60 and a driving roller 61, which constitute the recording paper 55, and which is further fed out between guide plates 62-1 and 62-2 and holds the recording paper 55 by suction. is guided to the opening 65 of.

To further explain the drive roller 61 with reference to FIG. 6, this drive roller 61 is a frame 66-1.
It is fixed to a shaft 67 rotatably provided between 6-2,
This shaft 67 is a one-way clutch (one-way clutch) 6
8 to a shaft 69, and this shaft 69 is connected to a shaft to which a pulley 71 is fixed through a clutch 70.

The pulley 71 is connected to the drive roller 6 by a motor (not shown).
1 is constantly driven to rotate in the direction of arrow T shown in FIG.
8 at a predetermined circumferential speed V.

Since the speed of the drum 63 is higher than the paper feeding speed of the drive roller 61, the leading edge of the recording paper sent out by the drive roller 61 is wrapped around the drum 63, and the rear end is still between the drive roller 61 and the driven roller 60. Recording paper 55 is held between
Abnormal tension is applied to it and it breaks. Therefore, in this embodiment, a one-way clutch 68 is provided as shown in FIG. The drive roller 61 is configured so that the drive roller 61 can rotate at a speed higher than the drive speed of the pulley 71.

With this configuration, the drum 63, which has a large effect on the recording speed, can be rotated at high speed to improve the recording speed.

Note that a light emitter 271 and a light receiver 272 are fixed to the guide plate 62-2, but these constitute a paper detector, and the light emitted from the light emitter 271 by the passage of the recording paper. The reflected light of the emitted light is received by a light receiver 272 to detect passage of the recording paper. Note that such a paper detector may hereinafter be referred to as a switch SWI.

The drum 63 has a hollow cylindrical shape,
As shown in FIG. 4, the L end is a shaft 73 fixed to the drum 63.
The other is rotatably held by a bearing 74, and the other is rotatably relative to a shaft cylinder 75 fixed to the holding frame 74, and
The space between the shaft cylinder 75 and the drum 63 is maintained in an airtight state.

A pulley 76 is fixed to the end of the shaft 73, and a motor 77
By driving the pulley 76 with a belt 80 wound around a pulley 79 fixed to a rotation shaft 78, the drum 63 is rotated in the direction of the arrow.

A large number of through holes 81 are provided in the circumferential portion of the drum 63, and by making the inside of the drum 63 a negative pressure than the atmospheric pressure, the recording paper 55 is attracted to the circumferential portion of the drum 63. It consists of

For this purpose, a hose 82 is connected to the shaft tube 75, and the end of this hose 82 is connected to a suction pump 83.

Therefore, when the leading edge of the recording paper 55 is conveyed to the opening 65 by the timing roller 10 while the pump 83 and motor 77 are being driven, the leading edge of the recording paper 55 is attracted to the drum 63. and tries to rotate together with the drum 63. While the area where the leading edge is wrapped around the drum 63 is small, the recording paper 55 is fed according to the rotational speed of the timing roller, and during this time the recording paper 55 slips around the drum 63 by the difference between the circumferential speed of the drum 63 and the feed speed of the timing roller. However, once it wraps around to a certain extent, drum 6
The roller 61 is wound around the drum 63 at the same speed as rotation number 3, and at this time, the one-way clutch 68 is activated and the drive roller 61 is in an idle rotation state.

A cylindrical outer drum 64 having a slightly larger diameter than the drum 63 is arranged outside the drum 63. Both ends of the outer drum 64 are open, and the recording paper 55 is placed at the upper end. An opening 65 for winding in and discharging is provided, and a slit 84 for moving an inkjet nozzle, which will be described later, is provided on the side.

The outer drum 64 is composed of a fixed drum part 85 and a floating drum 86, and the floating drum 86 is connected to the shaft 8.
If an accident (jam) occurs in which the recording paper 55 gets jammed in the gap between the drum 63 and the outer drum 64, the floating drum 86 should be rotated in the direction of the arrow about the shaft &7. It is constructed so that the recording paper 55 can be taken out by moving it.

As described above, the slit 84 is used to move the inkjet nozzle 88, and as shown in FIG. 7, the inkjet nozzle is surrounded by a protective cylinder 89 and integrally constitutes a nozzle head 90.

This nozzle head 90 is mounted on a drum 63 on a base 91.
It is slidably fixed in a direction perpendicular to the rotation axis of the

That is, a flange 92 is provided at the rear end of the head 90, a protrusion 93-1, 93-2 is provided on a part of the base 91, and a spring 94 is provided between the flange 92 and the protrusion 93. -1.94
-2 is installed. Therefore, the nozzle head 90
is always energized in the direction of arrow C. A stopper screw 95 is provided on the flange 92 so that the tip of the nozzle head extends a minute distance from the recording paper 55 wound around the drum 63. Adjust 95. This state is selected to be the optimum distance for recording on the recording paper 55 by the inkjet nozzle 88.

On the other hand, the base 91 is fixed to a movable base 99 that is slidably fixed on three guide rails 96 and 97 degrees 98 that are attached to the rotation center axis of the drum 63 and provided in parallel. By moving the movable base 99 along the rails 96 to 98, the head 90 can move within the slit 84 from one end of the drum 63 to the other end. A tank 100 filled with ink 199 is placed on the movable base 99, and the ink is supplied from the tank 100 to the inkjet nozzle 88 through a pipe 101.

The tank lOO is fixed to the movable base 99 using leaf springs 102-1.
As if holding the tank 100 at the free end of 102-2 (
This is done by doing so.

Since the movement of the movable base 99 is performed by a linear motor, the permanent magnet 103 and yoke 104 that constitute the linear motor are fixed to a part of the movable base 99, and the external part of the movable base 99 is A coil 105 is provided so as to face the permanent magnet 103. As shown in FIG. It is something that exists.

Further, as shown in FIG.
07 is approximately parallel to the rotation center axis of the drum 63
A cam 108 for driving the collar 92 is provided on this shaft 107 over almost the entire width of the drum 63.

An arm 109 is fixed to the end of this cam 108, and this arm 109 is connected via a connecting arm 110 to a plunger 111 driven by a solenoid 112.
3 in the direction of arrow E. Since this spring 113 is stronger than the springs 94-1 and 94-2, when the solenoid 112 is not driven, the cam 108 rotates in the direction of the arrow E to a position as shown by the dashed line, and the nozzle Tsuba 9 of head 90
Push 2 backward to the position shown by the dashed line.

In other words, when the solenoid 112 is not driven, the tip of the nozzle head 90 (inkjet nozzle 88) moves to the outside of the slit 84. Therefore, the outer drum 64 can be easily attached and detached, and the movable base 99 and the base 91 can be attached and detached easily.

Also, the solenoid 112 is energized to release the spring 113.
If the plunger 111 is driven in the direction of the arrow against the force, the cam 108 will rotate to the position shown by the solid line.

In this state, the nozzle head 89 is moved toward the drum 63 by the force of the spring 94 against the stopper screw 95 and the base 91.
The nozzle head 90 and the tips of the inkjet nozzles 88 enter the slits 84 until they come into contact with each other.

In this way, by controlling the solenoid 112, the position of the inkjet nozzle 88 can be controlled (for example, if the recording paper 55 is placed between the drum 63 and the outer drum 64).
When a so-called jam occurs, the jam detection output can drive the solenoid 112 to evacuate the inkjet nozzle 88. Also, the inkjet nozzle 88 can be evacuated during maintenance and inspection. This can prevent damage to the inkjet nozzle 88. In the following description, the bases 91 and 99, the nozzle head 90, and the inkjet nozzle 88 will be referred to as the recording head 8.

On the recording paper 55 wound around the drum 63 that rotates at high speed, recording is performed by an inkjet nozzle 88 that moves at a constant low speed along the guide rails 96 to 98. The same information as the original is recorded on the recording paper 55 by sequentially applying original signals obtained by the light receiver 35 to the original.

When the recording on the recording paper 55 is completed in this way, the pump 83 is stopped to release the negative pressure inside the drum 63 and the pressure becomes the same as atmospheric pressure, or the negative pressure is brought closer to atmospheric pressure. By doing so, when the recording paper that has been attracted to the drum 63 is separated and the leading edge of the recording paper reaches the opening 65, the recording paper 55 is guided by the guide plates 62-1 and 114 and placed in the ejected paper storage section. 115 and is stored here. In this way, even without stopping the pump 83, a lid for introducing outside air into the hose 82 is provided on a part of the hose 82, and opening and closing of this lid is controlled by a plunger to maintain a negative pressure state inside the drum 63. It can be controlled.

Note that a detector for detecting that the leading edge of the recording paper 55 has passed through a portion facing the inkjet nozzle 88 is provided on a part of the outer drum 85, and a detector is provided on a portion of the outer drum 85 to detect when the leading edge of the recording paper 55 has passed through a portion facing the inkjet nozzle 88.
Detector 1 detects the trailing edge of the recording paper that also passes through part of 4.
17, and the operation of this detector will be explained in detail in the control explanation below.

As already mentioned, there are two guide grooves 27 at the top of the recording device 11, and the reading device 12 is configured to move along these grooves 27.
When inspecting the area around the inner drum 63, the reading device 12 is moved to above the storage section 115 as shown by the two-dot chain line in FIG.

In order to facilitate such inspection, one end of the guide plate 62-1 is rotatably supported by a shaft 118, and when the reading device is moved, the guide plate 62-1
By rotating the drum 63 about the shaft 118, the drum 63 can be exposed directly, and the drum 63 and its surrounding area can be checked in this state.

With this configuration, the recording section can be inspected from above by simply moving the unit without disassembling the reading section.
Parts can be replaced, etc.

Although the present invention has been described in detail above, the present invention is not limited to the above-mentioned embodiments (in addition to an inkjet printer, the recording section may be a laser beam printer that uses a laser beam, or an LED that uses an LED array). It is also possible to use a printer, etc. Also, as a reading section, it is also possible to use a type that reads the image by moving the document.

〔Effect of the invention〕

As described above, in the present invention, since the information reading unit and the recording unit can be handled as units, installation, movement, and replacement can be easily performed.

Furthermore, since it is movable relative to the information reading unit and recording unit, when a failure occurs in either of them and an internal inspection is required, by moving the unit, only the inside of the unit that requires inspection can be inspected. This makes inspection very easy.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a copying apparatus according to an embodiment of the present invention, and FIG.
The figure is an enlarged perspective view of the main part showing the document table in Figure 1,
The figure is a 3A-3A sectional view of Figure 1, and Figure 4 is 4A of Figure 1.
-4A sectional view, Fig. 5 shows the drive mechanism of the pointer, A is a partially sectional top view, B is a sectional view of the main part, C is a top view, Fig. 6 is a top view showing the drive roller, Fig. 7 8 is a side view showing the recording head, and FIG. 8 is a top view showing the recording head. Here, 6 is a paper quality specification key, 7 is a paper size specification key, and 8
1 is a recording head, 9 is an optical head, 10 is a timing roller, 11 is a copying device, 12 is a reading device, 13 is a recording device, 18 to 21 are points, 27 is a guide groove, 34 is a lens, 3
5 is a light receiver, 36 is a lamp, 51-1 is a Hall element, 5
2 is a reflective plate, 55 is a recording paper, 56 is a paper feed roller, 63
is a drum, 68 is a clutch, 77 is a motor, 83 is a pump, 88 is an inkjet nozzle, and 90 is a nozzle head.

Claims (2)

[Claims] (1) It has a reading section that reads image information on a document and converts it into an image signal, and a recording section that records a copy image corresponding to the original image on a recording material based on the image signal output from the reading section. A copying apparatus, characterized in that a reading section that outputs the image signal and a recording section that records based on the image signal are separate units. (2) The copying apparatus according to claim 1, wherein the reading unit and the recording unit are relatively movable.