JPS61291332A - Automatic cut sheet feeding system for recording device - Google Patents

Abstract

PURPOSE:To make the extent of power capacity smaller and an automatic paper feeding function attainable, by operating those of supplying, feeding and discharging device for a cut sheet in an alternative manner. CONSTITUTION:When a drive motor 5 rotates in a Q direction, paper feed rollers 12 and 13 rotate in a Q1 direction, because each of one-way clutches 10 and 11 is turned on, and feed the printer side at a lower part with a cut sheet on an upper end of a bundle 1. On the other hand, at this time rotation of the motor 5 causes a lever 15 to rock in a zero direction, and makes a paper discharge roller 20 separate from a paper discharge guide rib 34 so that though the paper discharge roller 20 rotates in a Q2 direction, there is no danger to push the cut sheet 35 being discharged out of a printer back to the printer side. When the motor 5 rotates in an R direction, these clutches 10 and 11 are turned off whereby these paper feed rollers 12 and 13 will not rotate any longer. On the other hand, the lever 15 rockes in an (r) direction, and the cut sheet 35 being discharged out of the printer is held by the paper discharge roller 20 and the paper discharge guide rib 34 in between, thus the cut sheet 35 is discharged onto a paper discharge tray 36.

Description

[Detailed Description of the Invention] Technical Field> The present invention automatically feeds a cut sheet to a recording device,
Or it relates to a cut sheet automatic feeding system that automatically feeds cut sheets from a recording device.

<Prior Art> Recording devices generally record on continuous paper such as fan-hold paper and cut sheets such as single sheets. When using continuous paper, if you load the paper first, there is no need to load the paper again. On the other hand, when cut sheets are used, it is necessary to load the cut sheets one by one, and there is a high demand for an automatic paper loading mechanism.

As such an automatic paper loading mechanism, in an automatic paper feeding device (cut sheet feeder) etc. conventionally installed in a printer, paper feeding operation is carried out by an automatic paper feeding device 110, as shown in Fig. 81.
The paper feed roller 101 was driven by a motor on the side, and the paper discharge operation was performed by a paper discharge roller driven by the rotation of the paper feed roller of the printer. That is, in FIG. 1, the paper feed roller 102 and the paper ejection roller 104 are connected by a belt (not shown) or the like, and the paper ejection roller 104 is rotated by the rotation of the paper feed roller 102. In this case, as printing progresses, the paper (cut sheet) 103 is sent to the paper ejection roller 104 side from the contact point between the first pinch roller 10B and the paper feed roller 102, but the paper ejection operation is performed by the two paper ejection rollers 104, 104. Do this while holding the paper. 105 is a printer, 110 is an automatic paper feeder, 112 is a head, 1
14 is a second pinch roller. Incidentally, even when a cut sheet feeder is used, it is desirable to be able to manually feed cut sheets one by one to the recording apparatus. Therefore, in the past, a dedicated switch for switching between automatic paper feeding mode and manual feed mode and an opening for inserting cut sheets were provided.
The cut sheet was inserted into the opening after the switch was changed. However, this poses a risk of forgetting to change the switch and manually inserting cut sheets in automatic paper feeding mode.

Further, the conventional cut sheet feeder has a dedicated paper detection switch, and the recording apparatus controls the cut sheet feeder based on the detection result of this switch to determine the timing for supplying the cut sheets. However, this not only requires a dedicated detection switch, but also requires the recording device to have a dedicated processing program based on this detection switch, which increases the burden on the control system of the recording device. was there.

In addition, conventional cut sheet feeders were equipped with a paper feed start switch and other various switches, but
This not only requires a dedicated switch, but also requires the recording device to have a dedicated program based on that switch, which has the disadvantage of increasing the burden on the control system.

In addition, conventional cut sheet feeders were equipped with a dedicated warning means to notify them of out of paper or paper jam, but this not only requires a dedicated warning means, but also requires the activation of that warning means. The recording device had to have its own dedicated program, which placed a heavy burden on the control system.

In addition, conventional cut sheet feeders had separate switches to detect paper out and paper jam, but this required a large number of detection switches, complicating the configuration and making it difficult to control the recording device's control system. increase the burden.

Furthermore, conventional cut sheet feeders have a dedicated switch for detecting paper jams, but this has the disadvantage of complicating the configuration and increasing the burden on the control system of the recording apparatus.

In addition, conventional cut sheet feeders cannot detect paper out, or even if they do, they require a dedicated detection switch.
This has the disadvantage that the configuration becomes complicated and increases the burden on the control system of the recording apparatus.

Conventionally, a recording device has one motor to rotate its paper feed roller, and a cut sheet feeder also has a motor to rotate a paper feed roller or a paper ejection roller, and at least those motors simultaneously There was a period of being driven. For this reason, it is necessary to use a large capacity power source to drive these motors.

(Objective) An object of the present invention is to provide an automatic cut sheet feeding system for a recording device that achieves an automatic sheet feeding function with a reduced power supply capacity.

<Embodiment> FIG. 2 shows an embodiment of the present invention, and shows a state in which a detachable cut sheet feeder is attached to a printer FT. Inside the printer FT, there are a platen 152 serving as a paper feeding means, a first pinch roller 156, and a second pinch roller 15.
4 are arranged, and the platen 152 and the first pinch roller 1
A paper end sensor 57 is disposed upstream of the junction with the paper end sensor 56 . Further, a print head 63 is arranged downstream of the joining point between the platen 152 and the second pinch roller 154. On the other hand, the structure of the cut sheet feeder is as described below. That is, in FIG. 2, a bundle 1 of cut sheets is placed between a paper holder 2 and a front cover 3 that can be opened and closed in the direction of the arrow with respect to the paper holder 2, and the upper end of the bundle 1 is placed in a hopper 4. It is supported by

Below the cut sheet feeder, a paper feed ψ paper discharge section is formed which uses the motor 5 as a power source.

In FIG. 3, a drive motor 5, which is a pulse motor, is fixed at the rear left side of the figure, and is directly connected to a paper feed pulley 8 via a motor pulley 6 and a timing belt 7. The paper feed pulley 8 is fixed to a paper feed shaft 9 rotatably supported on both side plates of the C1S feeder, and the paper feed shaft 9 always rotates together with the paper feed pulley 8. The paper feed shaft 9 is connected to a paper feed roller 12,
13 is attached, and these paper feed rollers 12, 13
rotates only when the motor 5 rotates in one direction.

A lever 15, which has one end supported by a support spring 14 so as to float the other end, is rotatably supported on the paper feed shaft 9. Although only the lever 15 on the left side is shown, there is also one on the right side, and both of the pair of levers 15.15 are rotatably supported on the paper feed shaft 9, and the other end is A paper discharge shaft 16 is rotatably supported.

At both ends of the paper delivery shaft 16, adjacent to the arm 15.15,
The paper ejection pulleys 17, 17 to which the paper ejection pulleys 17, 17 are fixed receive power transmitted via a timing belt 19 from a small pulley 18 (FIG. 2) that rotates integrally with the paper feed pulley 8. , always rotates integrally with the motor 5. A paper ejection roller 20 is fixed to the paper ejection shaft 16.

FIG. 4 is a perspective view of the cut sheet feeder when viewed from the front, in which a release lever 21 is rotatably supported at the upper left end of the paper holder 2 around an axis 22. The release lever 21 has a cam surface 21a and engages with a release arm 24 rotatably supported around a shaft 23. A side presser 25 for supporting the left side of the bundle 1 of cut sheets is engaged with a release arm 24 and is pressed against the bundle 1 by a spring 26. A paper guide 27 that supports the right side of the bundle of cut sheets is provided on the opposite side from the side presser 25.

In the above structure, when the release lever 21 is pulled toward the front side in FIG. 4, the side presser 2
5 moves in the N direction, the restriction in the width direction of the bundle 1 of cut sheets is released, and the bundle 1 can be removed or a new bundle 1 can be removed.
You will be able to insert .

Both sides of the lower end of the bundle of cut sheets 1 are supported by separation claws 28 and 29, which are also used in sheet cassettes of copying machines.

Although not mentioned above, a high-friction felt 30 and a spring 31 that presses the felt 30 against the arm 15 are inserted between the paper ejection pulley 17 and the lever 15. This is to swing the lever 15 in a predetermined direction using the rotational force of the motor 5, as will be described later.

FIG. 5 shows a cross section of the cut sheet feeder, in which a bundle 1 of cut sheets is placed on an intermediate plate 32. As shown in FIG. The spring 33 presses the lower part of the intermediate plate toward the paper feed roller 12, so that the uppermost cut sheet of the bundle 1 is constantly pressed against the paper feed roller 12.

The paper ejection roller 20 is located above the paper ejection guide rib 34, and a
Or it can swing in direction b.

In the cut sheet feeder having the above structure, in FIG. 2, when the drive motor 5 rotates in the Q direction,
Paper feed rollers 12 and 13 are one-way clutches 10.11
is turned on, it rotates in the Q1 direction in FIG. 5 and feeds the cut sheet at the upper end of the bundle 1 to the printer side below.

On the other hand, at this time, the rotation of the motor 5 is such that the lever 15 in FIG.
Since the paper ejection roller 20 is moved away from the paper ejection guide rib 34 by swinging in the direction Q2, the cut ejected from the printer is There is no danger of pushing the sheet 35 back toward the printer.

Next, when the motor 5 rotates in the R direction in FIG.
2 and 13 do not rotate.

On the other hand, the lever 15 swings in the r direction, and the cut sheet 35 ejected from the printer is held between the paper ejection roller 20 and the paper ejection guide rib 34, and the paper ejection roller 20 rotates in the R1 direction. , the cut sheet 35 is discharged to the paper discharge tray 36. At this time, the paper presser 3 is rotatable around the shaft 37.
8 holds the discharged cut sheets so that they are correctly stacked on the paper discharge tray.

Although the operation in the automatic paper feeding mode is performed as described above, the cut sheet feeder has a manual feeding mode in which paper is fed manually.

FIG. 6 shows the manual feed mode, with the front cover 3 pulled out in the S direction. When you pull out the front cover 3 as shown in the figure, the lower end of the cover 3 will be at C1S.
Operate the actuator 39a of the mode switch 39 fixed to the feeder housing to turn the mode switch 39 to O.
Let N. The output of this mode switch 39 is sent to the printer side via a cable (not shown) to inform the printer that it is in the manual feed mode. Further, when the front cover 3 is pulled out, a five-manual insertion opening 40 is formed, from which a cut sheet can be inserted. The cut sheet inserted through this manual feed opening is guided between the printer's platen and pinch rollers.

[Electrical configuration]

FIG. 7 shows an electrical connection configuration between the cut sheet feeder, printer FT, and host computer 65. The cut sheet feeder is connected to a connector 52 on the printer side through a connector 51, and receives a drive signal from the printer side to rotate the motor 5. Also mode switch 3
9 is also connected to the printer via a connector, and the open/closed state of the mode switch is transmitted to the printer side. Here, the connection wire related to the mode switch 39 is the ground wire 39.
It consists of three wires including 139b and 39d, and the ON/OFF state of the mode switch 39 is indicated by 139b and 39d, while the connector 51 of the cut sheet feeder and the connector 52 of the printer are connected by the wires 39b and 39c. Let me know.

The printer is operated by a central processing circuit (referred to as CPU) 53 according to a program stored in ROM 54.
The data stored in the M55 is used to control the drivers 58, 59, 60, etc. based on the detection results of various sensors (carriage position detection sensor, ribbon end sensor, temperature sensor, etc.) 56, paper end sensor 57, etc. Motor 61, platen motor (platen rotation motor) 6
2. The print head 63 is driven to print on the cut sheet on the platen. At this time, the CPU 53
The state of the mode switch 39 of the 0S feeder is detected, and if it is in automatic paper feeding mode, the motor 5 of the cut sheet feeder is driven via the driver 64, and a new cut sheet is appropriately fed into the printer from within the feeder, and the printed sheet is also fed. The cut sheet discharged from the printer is introduced into the feeder.

On the other hand, when the mode switch 39 is in the manual feed mode, the CPU 53 controls the drive motor 5 of the cut sheet feeder.
is not operated at all, and the carriage motor 61, platen motor 62, and print head 63 are operated to perform printing in the same process as when the cut sheet feeder is not installed.

In addition to the area 55a for storing data transmitted from the host computer 65, the RAM 55 described above includes, for example, areas necessary for the CPU 53 to execute its programs.

A line feed counter 55b that stores the number of feed lines of the platen motor 62, an RC memory 55c that stores that the paper end sensor 39 has detected the end, and a printer's LF key switch, FF key switch (page feed switch), and PS key switch ( A 5-key memory 55d that stores whether any of the paper set key switches (paper set key switches) was pressed, a C, S, and F memory 55e that stores whether or not the C and S feeders are allowed to operate, and whether a paper jam has occurred. There is an area such as a P-jam memory 55f that stores whether or not the jam has occurred.

The printer also has an alarm lamp 70 that notifies you when the paper end sensor 57 detects that there is no paper left.
, and an online lamp 71 that indicates whether the printer is in a state in which it can accept data from the host computer 65 (online state) or in a state in which it cannot accept data (offline state).

〔motion〕

Figures 8 to 11 show the cut sheet feeder and printer P.
A program for executing these operations is stored in the ROM 54 of the printer.

The operation will be explained below for each situation.

1. Processing Based on Turning on the Power Switch - When the power switch (not shown) on the right side of the printer is turned on in step S1, the contents in the RAM 55 are initialized.

That is, in steps 82 to S6, the P jam memory 5
5f, 5key memory 55d, LF counter 55b, R
The C memory 55c is set to "0", and the C and S
, the F memory 155e is set to ``1''. After initialization, in step S7, the output of the paper end sensor 57 provided in the printer is detected to determine whether a cut sheet exists on the printer side. Although this sensor 57 is not shown in FIG. 1, it is located just before the cut sheet fed from the C1S feeder reaches the platen. If the answer is No here, that is, if there is paper, the process advances to step S8. The RC memory is 1” when the end of paper is detected, that is, when no paper is detected.
When it is detected that there is one paper, it memorizes °0°゛, which becomes No and proceeds to step 9.
The C, S, and F memories store "O°" when the C8S feeder can be operated, and "1" when the operation is prohibited. In step S9, the C, S, and F memories are set to O. Then, in step 310, the state of the RC memory is judged again, and since RC=O and NO at this time, an online signal is generated in step Sll, 512, to notify that it is ready for printing, and the on-line signal is displayed on the front panel of the printer. The online lamp is turned on. In this state, the printer waits for data from the host computer, and when the online key switch on the front panel of the printer is pressed, offline processing starts preferentially.

On the other hand, if it is determined in step S7 that there is no paper, C,
It is determined whether the S feeder is installed in the printer (step 514), whether or not the C and S feeders are in manual feeding mode (step 515), and furthermore, if the printer is in automatic paper feeding mode, it is determined whether the C, S, and F feeders are installed in the printer. It is determined whether the memory is “OII” (step 516), here the power is turned on.
When initialized to 1", the process proceeds to step SL7, and the RC memory is set to 1 to notify that there is no paper.
shall be. RC memory: If it is 1, step S8. S.I.
0 and jumps to step S18, which also turns on the alarm lamp on the printer's front panel, outputs an offline signal (step 519), and turns off the online lamp (step 320), where the process in step 313 described above is performed. When the online key switch is pressed, the process jumps directly to step S19 and the alarm lamp is not turned on, since there is nothing abnormal and the process is simply set offline.

When offline processing is started as described above, in principle,
LF key switch (line feed key switch), F
This state remains until the F key switch (page turn key switch) and PS key switch (Gi set key switch) are pressed. Note that exceptions will be described later.

-ON line state- When the online key switch is not pressed in step S13 and data is received from the host side (step 522), whether or not the data is a line feed (LL) signal (step 522), the page is turned Signal (FF)
(step 523), and when both are NO, the gear ridge motor 61 and the print head 63
etc. to perform data processing such as printing (step 524).

On the other hand, when it is determined in step S22 that it is a line feed signal, it is determined whether or not the C1S feeder is attached (step 525), and if No, the platen motor 62 is forcibly rotated by one line (step 52).
6), increment the LF counter (step 5).
27), Step S 25 j: Hey - (If Yes, it is determined in step S28 whether the LF memory is 100 or more.The size of standard paper that can be loaded into the C3S feeder is 100 lines at the maximum. The end is set to such an extent that the end can be detected by the paper end sensor 57 by feeding the paper by a further -line (step 529), and when the LF memory is 100 or more, the paper is further fed by -line (step 529), and step S30 The paper end sensor 57 is detected to determine whether a paper jam has occurred.

If there is no paper, it is determined that there is no abnormality, and the process returns to step S6, and the online processing is repeated in the same way. - If there is strong paper, the alarm lamp of the printer is blinked and the P jam memory is set to ``BI'' to notify that a paper jam has occurred (steps 531-S33). The alarm lamp continues to blink until the jammed cut sheet is removed and the paper end sensor 57 detects a paper fish.

When a paper fish is detected, the process returns to step S6 with the alarm lamp kept on.

When the paper jam is removed and the process returns to step S6, the RC
If it is set in memory 20 and the setting conditions have not changed since then, offline processing is entered and steps S18 to S2 are performed.
At 0, the alarm lamp continues to light, the offline signal is output in place of the online signal, and the online lamp is turned off until the key switch (LF key switch, FF key switch, PS key switch) is pressed in this state. I look forward to it.

On the other hand, if it is determined in step S23 that it is an FF signal,
It is determined whether the C1S feeder is installed (step 534), and if No, the paper is fed to the page end (lowest printing line) based on the contents of the line feed memory (step 535), and the C and S feeders are installed. is,
And when it is not in manual feed mode, the paper end sensor 5 is activated again.
7 output is detected (step 537), and if it is paper cloth, L
The platen motor 62 is rotated until the F memory becomes 10.0 or more or until the paper end is detected by the paper end sensor 57, and the value of the LF memory is incremented (steps 537 to 540).

When the paper end is detected or the LF memory becomes 100 or more, the output of the paper end sensor 57 is detected again in step S41, and the process goes to step S41.

If so, it is assumed that a paper jam has occurred.
Make the alarm lamp blink and set the P jam memory to “1”
When the zero paper jam that continues to cycle through steps S41 to S44 as °° is removed, the process returns to step S6 with the alarm lamp turned on, and waits in an off-line state as in the case of returning from step 330.

On the other hand, in the online state, the operation of automatically feeding cut sheets from the C and S feeders to the printer, and the operation of discharging printed cut sheets from the printer to the C1S feeder, are performed only when paper leakage is detected in step S7. is started by. When a paper fish is detected in step S7, the process proceeds to step S42 according to existing setting conditions, where the C, S, and F memories are set to 1, and it is further determined whether the P jam memory is set to O (step 543). Here, the prerequisite is that no paper jam occurs, so the answer is Yes, and the platen motor 62 of the printer is rotated by a predetermined amount to fully discharge the sheets on the platen to the C9S feeder side (step 544). On the other hand, the motor 5 on the C6S feeder side is rotated in the reverse direction by a predetermined amount to discharge the printed sheet onto the paper discharge tray (step 545). Next, the motor 5 is rotated by a predetermined amount in the forward direction almost continuously to feed the cut sheet (single number) on the paper feed tray to the printer side (Stella 7'546).

On the printer side, the platen motor 62 is rotated again (
16 lines), and feeds the fed cut sheet to the printing start position (step 547).

Through steps 344 to S47 above.

One sheet feeding/ejection is executed, and then it is determined whether or not feeding/ejecting has been performed correctly by detecting the output of the paper end sensor 57 (step 348).If it is paper cloth, it is normal. When it is determined that there is, the routine enters the data processing routine again. - If there is no paper, the RC memory is set to 1 (step S17) and offline processing begins.

1. Offline processing 1. In this embodiment, in this offline state, the initial paper setting of the cut sheet (setting the sheet at the printing start position), the paper setting after a paper jam occurs, etc. can be performed. can. Also, this offline state can occur if the cut sheet is loaded correctly in the printer.
There are two cases: the alarm lamp is off, and the alarm lamp is on because the cut sheet is not loaded in the printer or C9S feeder. If the alarm lamp is not lit, pressing the online key switch will return Printan to the online state, but if the alarm lamp is lit, pressing the FF key switch or PS key switch, etc. If you do not set the paper, you will not be able to return to the online state.

When it is detected in step 349 that the LF main key switch has been pressed in the offline state, line feed of the cut sheet or paper jam detection is performed in step 55ON858, just as in the case where the LF double signal is detected in step S22. , the occurrence of paper jam is recorded. Thereafter, in step S59, in order to remember that the LF main key switch has been pressed, 1 is stored in the 5-key memory, and the process proceeds to step S60.

Also, in the offline state, in step 561 the FF
When the press of the key switch is detected, in exactly the same way as when the FF signal is detected in step S23, in steps S62 to S72, the cut sheet is fed to the end of the page or until the paper fish is detected. In step S73, after zero or more processes are performed, such as sending the paper or detecting a paper jam (paper jam) and storing the paper jam, in order to notify the 5key memory that the FF key switch has been pressed, '2'' is stored, and further in step 374 C, S, F memory=
As O, proceed to step S60.

On the other hand, when it is detected in step 575 that the PS key switch has been pressed, the platen motor 62 is forcibly rotated by 16 lines (step 376), and the 5k
"3' is stored in the ey memory to notify that the PS key switch has been pressed (step 577), and the C
, S, F memory 20 (step 574) and proceeds to step SSO.

Step 60 and subsequent steps are steps for actually executing paper setting, and steps S60 to S91 are steps S6 to S9, S14 to S17, and S42 to S4 described above.
g, where in particular steps 384 to
387 to the platen motor 62. The motor 5 is driven to perform sheet feeding and ejection once, but in the off-line state, sheet feeding and ejection is always executed here.

In order to perform paper feeding and ejection in steps S84 to S87, the C0S feeder must be installed and in automatic paper feeding mode, and the prerequisites are C,
It is necessary that S, F memory = 0, P jam memory = O.

Here, in step S60, C, S, F memory 0
Considering the case where the P jam memory is set to 0, ② Turn on the power switch to initialize the P jam memory to 0, turn on the FF key switch or the PS key switch, and set C in step S74. S,
When F and memory are set to O, the paper jam is caused once in the online state, the paper is removed, and then step S92 in FIG. P.S.
Turn the key switch ONL and select C, S, F in step S74.
When the memory is set to 0■, in the offline state, a paper jam occurs once,
After removing the paper, pass through Sten 7'S93 in FIG. 11 to set the P jam memory to 0, and then turn on the FF key switch or PS key switch to switch to C1 in step S74.
S, F memory: When set to 0 (■) When the online state is forcibly changed to the offline state using the online key switch, but in this case, it is determined that the paper is cloth in step 378, and the process proceeds to step S90, where the paper is not fed or ejected. There are cases where ■~■ are not done.

In the case of I, II, and IV described above, steps S84 to S87 are passed and one sheet feeding/ejecting operation is performed, and the output of the paper end sensor 57 is detected in step S88 to check whether the paper has been set correctly. If it is determined to be no paper fish, the PC memory is set to 1 in step 589 to notify that it is a paper fish, and the process returns to step S49 via step S94. At this time, step S8
2, C, S, F memory = 1, so L
This state remains until the F key switch, FF key switch, or PS key switch is pressed.

On the other hand, if it is determined that the paper is cloth in step 388, it is determined that the paper has been set correctly, and in step 591 C, S
, F memory = 0, and the process proceeds to step S95. In this case, since the FF key switch or PS key switch is pressed, the process proceeds to step S96, and the pressed key switch is the F'F key switch. to judge. If it is not an FF key switch, that is, if it is a PS key switch, proceed directly to step 598, turn off the alarm lamp, and output an online signal (step 599), and turn on the online lamp (Stella 7').
S100) Return to step S4 and start online processing.

Further, if it is determined in step 596 that the FF key switch has been pressed, the process advances to step S97 and C.
S. It is detected whether or not the feeder is attached. If it is attached, the process proceeds to step 398; if not, the process proceeds to step 5101, where it is determined whether the online key switch is pressed.

In this way, when the PS key switch is pressed and paper cloth is detected, the system immediately goes online regardless of whether the COS feeder is attached or not. Further, when the FF key switch is pressed and paper cloth is detected, if the C and S feeders are attached, the device goes online, but if the C0S feeder is not attached, it remains offline.

On the other hand, in case (2) mentioned above, if the FF key switch or PS key switch is pressed, the currently set cut sheet will be ejected and a new cut sheet will be fed, but if the LF key switch is pressed, Paper is not fed or ejected. However, when the paper end is detected in step 578, the C, S, and F memories are 0, and the P jam memory is 0, so one sheet feeding/discharging operation is automatically performed. Furthermore, if a paper sheet is detected in step 378, one sheet feeding/discharging operation is automatically performed, so for example, when the operator turns the platen by hand to discharge a cut sheet, one sheet feeding/discharging operation is automatically performed. An action is taken.

Single manual feed mode - When in the manual feed mode, all operations are performed by the printer alone when the C8S feeder is not installed, and the C9S feeder does not operate.

The detailed operation of this embodiment has been described above, but for further understanding, the relationship between the operations of the platen motor 62 and the feeder motor 5 and the position of the cut sheet 35 will be explained in the 12th section.
It is shown in Figure 13.

When feeding a new cut sheet 35 to the printer, (
In FIG. 12(a), the feeder motor 5 is first rotated in the reverse direction, and then rotated in the forward direction to send the cut sheet 35 to the platen 52. The leading edge of the cut sheet passes in front of the paper end sensor 57 (see FIG. 12(b)), and then the platen 152
and the pinch roller 156 (Fig. 12(C))
After that, the platen 152 is rotated a small amount to form a loop at the tip of the cut sheet (FIG. 12(d)).
After that, the feeder motor 5 is stopped and the platen motor 62 is rotated by a predetermined amount to send it to the printing start position (12th
After that, printing starts, the platen 152 rotates, the cut sheet 35 is fed, and the end of the sheet is detected by the paper end sensor 57 (FIG. 12(f)).
From this position, the platen 152 is further rotated until the end of the cut sheet 35 passes between the platen 152 and the pinch roller 154 (FIG. 12(g)).
52 is stopped, the paper ejection roller 20 is rotated,
Completely eject the cut sheet into the paper ejection storage section (12th
Figure (h)).

As described above, in this embodiment, the opening 40 for manual paper feed is opened and closed in conjunction with the opening and closing of the front cover 3, and the automatic paper feeding mode and the manual paper feeding mode are switched. This prevents the danger of paper feeding.

Further, the cut sheet feeder of this embodiment is a printer FT.
Since the paper feeding operation is started by the output of the paper end sensor 57, the sensor can also be used, and the paper can be fed reliably. Furthermore, when you manually rotate the platen 152 to take out a cut sheet, a new cut sheet is automatically fed, making it very easy to use. Even when the end of a page is detected, the cut sheet is automatically ejected and a new cut sheet is automatically supplied, making it easy to use.

In addition, in this embodiment, the printer's page turn key (F
The paper set key (PS key) of the printer has the function of ejecting the cut sheet currently on the platen 152 and feeding a new cut sheet to the printing start position by attaching the cut sheet hooder. It has the function of feeding the inserted cut sheet to the printing start position (feeding the paper by 16 lines), but if a cut sheet feeder is installed, it will eject the cut sheet currently on the platen 152 and insert a new cut sheet. This function is to feed the paper to the printing position. In this way, the structure is simplified by using the printer switch as the cut sheet feeder switch for feeding and discharging sheets.

In addition, in this embodiment, the alarm lamp 7 of the printer
0 is used as a paper jam in the cut sheet feeder and as a warning lamp to notify when there is no paper, which simplifies the structure.

Further, in this embodiment, the paper end sensor 57 of the printer FT detects both a paper jam and no paper in the cut sheet feeder, so the structure is simplified.

Furthermore, in this embodiment, the platen motor 62 and the feed/discharge motor 5 of the cut sheet feeder are not driven at the same time, but are driven at different timings, so that the capacity of the power source can be reduced.

It should be noted that the present invention is not limited to the above-mentioned embodiments, but for example.

The cut sheet feeder may be integrated with the printer or may consist of only a paper feed tray and paper feed rollers.Also, a buzzer, display, etc. may be used as a means to warn of paper jams or out of paper. (Effect) As described above, the present invention selectively operates the cut sheet feeding means, feeding means, and discharge means, so that the capacity of the power source can be greatly reduced.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional printer and cut sheet feeder, Fig. 2 and subsequent figures show embodiments of the present invention, Fig. 2 is a side view of the cut sheet feeder, and Fig. 3 is a partially cutaway view. FIG. 4 is a front view, FIG. 5 is a sectional view, FIG. 6 is a side sectional view, FIG. 7 is a block circuit diagram, FIGS. 8 to 11 are flowcharts, and FIG. The figure is an explanatory diagram showing the process of feeding a cut sheet, and FIG. 13 is a timing chart. 1 - - 1 bundle of cut sheets 5 - - Part / paper ejection motor 3 - - Front cover 12. 13 - - 1 paper feed roller 15 - - Lever 20 - - 1 paper ejection Roller 39 --- Mode switch 40 --- Single manual feed opening 51.52 --- Connector 57 --- Paper end sensor 62 --- Platen motor 63 --- One print head 70 --- -Alarm lamp 15? -----Platen

Claims (3)

[Claims] (1) Recording means for recording on cut sheets A paper storage unit storing a bundle of cut sheets Means for supplying the cut sheets in the paper storage unit to the recording means Feeds the cut sheets supplied from the supply means so as to pass through the recording means A recording device comprising: means for discharging the cut sheet that has passed through the recording means into a discharge storage section; and a control means for controlling the supply means, the feeding means, and the ejection means so that only one of them operates. Cut sheet automatic feeding system for. (2) A recording device according to claim 1, characterized in that it has a first power source that operates the supply means and the discharge means, and a second power source that operates the feed means. Cut sheet automatic feeding system for. (3) The first power source is a motor capable of forward and reverse rotation, and its forward rotation operates the supply means, and its reverse rotation operates the discharge means. Cut sheet automatic feeding system for the recording device described in Section 2.