JPH0432289Y2 - - Google Patents

Description

[Detailed description of the invention] Technical field This invention supplies sheets of a predetermined size stacked in a first stacker to a printing device one by one using a feed roller, and then pulls out the printed sheets through a paper path and sends them to a printing device. The present invention relates to a paper processing device that guides the paper to a second stacker.

Purpose The purpose of this invention is to guide the paper from the top of the first stacker without performing any special key operations when feeding various types of paper different in size from the above-mentioned paper to the printing device. By simply closing the paper path for printing, it is possible to reliably prohibit the drive of the feed roller, which not only makes it possible to stop the supply of paper from the first stacker and print on the interrupted paper, but also to easily print on the interrupted paper. An object of the present invention is to provide an improved paper processing device realized with a simple configuration.

Embodiment Hereinafter, an embodiment embodying this invention will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, a typewriter frame 1 is rotatably provided with a platen 2, and a plurality of guide rollers 3, 4, 5 are provided on the frame 1 so as to engage with the outer periphery of the platen 2. It is arranged. Further, a paper pan 6 is disposed below the platen 2, and a paper meter 7 is disposed in front of the platen 2. Furthermore, a guide plate 8 having a flat plate portion extending substantially tangentially to the platen 2 is provided above the platen 2 .

A main frame 10 for a stacker is mounted on the frame 1 at the rear of the platen 2 by engaging a mounting piece 11 at the lower part of the main frame 10 with a pin 12 on the frame 1 side and tightening a screw 13.

A first stack member 14 formed by bending a metal plate is rotatably supported at the upper end of the main frame 10 by a shaft 15, and unprinted sheets P are stacked on the front surface of the first stack member 14. A compression spring 16 is disposed between the lower end of the first stack member 14 and the main frame 10 to bias the first stack member 14 forward. Also, this first
Guide walls 14a are provided on both sides of the central portion of the stack member 14 to protrude forward and to regulate the position of the side edges of the sheets P.Protrusions 17 that protrude rearward are also provided, and the protrusions 17 are provided with hooks. A hole 17a is formed. A latch lever 19 is rotatably supported on the main frame 10 in close proximity to the protrusion 17 by a shaft 18, and a latch claw 19a that can be engaged with and disengaged from the latch hole 17a of the protrusion 17 is provided at the base end of the latch lever 19. is formed. Further, this latch lever 19 is caused by the force of a spring (not shown) to cause the latch pawl 19a to lock into the latch hole 1.
It is biased in the direction of engagement with 7a. Note that the first stack member 14 and the inner bottom surface of the main frame 10 with which the lower edge of the paper P engages, etc.
A stacker S1 is configured. And the first
When replenishing the stacker S1 with paper P of a predetermined size, the first stack member 14 is rotated backward against the spring force of the compression spring 16, and the first stack member 14 is If the first stack member 14 is held in the position shown in FIG. 3 by widening the gap between it and the feed-out roller 22, which will be described later, and in that state engages the latch claw 19a with the latch hole 17a, the paper P can be easily replenished. In addition, if the latch lever 19 is pushed down in this state, the latch pawl 19a will be released from the latch hole 17a, and the first stack member 14 will be rotated forward by the spring force of the compression spring 16. The paper P in one stacker S1 is pressed against the feed roller 22.

As shown in FIG. 1, a rod-shaped second stack member 20 is disposed in the typewriter frame 1 in front of the first stack member 14, and as shown in FIGS. frame 1
A feed shaft 21 extending parallel to the platen 2 is rotatably supported. A pair of feed rollers 22 are attached to the feed shaft 21. A one-way clutch (not shown) is interposed between these feed rollers 22 and the feed shaft 21.
When the feed roller 2 is rotated in the paper feed direction (counterclockwise in FIG. 1), the feed roller 2
2 rotates integrally with the feed shaft 21, and the feed shaft 2 rotates integrally with the feed shaft 21.
When the paper P is pulled out in the paper feeding direction by the paper insertion mechanism A after the rotational drive of the roller 1 is stopped, the delivery roller 22 can freely rotate on the delivery shaft 21. As shown in FIG. 2, a driven gear 23 is supported at the left end of the feed shaft 21 so as to be relatively rotatable, and a shaft cylindrical portion 24 and a first intermediate gear 25 are integrally formed on the driven gear 23. . A shaft tube 26 is fixed to the feed shaft 21 on the left side of the shaft tube section 24, and a clutch spring 27 is interposed between the shaft tube section 24 and the shaft tube 26.
This clutch spring 27 is inserted and fixed into the shaft cylinder 26 at a fixed end 27b formed at one end thereof.
It is always wound around the shaft tube portion 24 and shaft tube 26 in a tightly wound state. The winding direction coincides with the rotation direction of the driven gear 23. Further, the other end of the clutch spring 27 is formed with an operating end 27a that projects radially outward. An actuator 28 is rotatably supported near the shaft cylinder 26, and an armature of a solenoid 30 is connected near its shaft support. Also, this actuator 28
is biased to rotate in one direction by a tension spring 29.

When the solenoid 30 is held in a non-energized state, one end of the actuator 28 is placed within the rotation locus of the operating end 27a of the clutch spring 27 based on the spring force of the tension spring 29.
In this state, when the rotation of the driven gear 23 is started and the operating end 27a is engaged with the actuator 28, the clutch spring 27 is wound back, so that the connection between the driven gear 23 and the shaft cylinder 26 is interrupted. Also, when the solenoid 30 is energized, the tension spring 29
The actuator 28 is rotated against the spring force, and one end thereof is disposed outside the rotation locus of the actuating end 27a,
The clutch spring 27 wraps around the shaft cylinder 26 and the shaft cylinder part 24 of the driven gear 23 by its own elasticity, and the shaft cylinder part 24 of the driven gear 23 and the shaft cylinder 26 are held connected.

On the other hand, inside the typewriter frame 1 is a motor 3.
1 is disposed, and a small-diameter drive gear 32 and a large-diameter second intermediate gear 41 are supported on the motor shaft so as to be integrally rotatable. This large diameter second intermediate gear 41
is connected to a coaxial gear 44 coaxially with the platen 2 via a third intermediate gear 43, so that the rotation of the motor 31 is transmitted to the platen 2.
A fourth intermediate gear 34 that meshes with both gears 32 and 23 is supported on the typewriter frame 1 between the drive gear 32 and the driven gear 23.

A support frame 42 is rotatably supported on the feed shaft 21, and a first support shaft 50 and a second support shaft 52 extending parallel to the feed shaft 21 are rotatably supported on the support frame 42, respectively. . A pair of first pull-out rollers 51 are provided on the first support shaft 50.
are fixed at predetermined intervals. Said second
A pair of second pull-out rollers 53 that engage with the first pull-out roller 51 are fixed to the support shaft 52 . When the driven gear 23 rotates, the first intermediate gear 25 , the fifth intermediate gear 54 supported by the support frame 42 , and the sixth intermediate gear 55 supported by the first support shaft 50 51 is rotated,
Following the first pull-out roller 51, the second pull-out roller 53 is rotated integrally with the second support shaft 52. On the other hand, an elastic member 57 is attached to the front end of the second stack member 20 at its proximal end, and its distal end is in elastic contact with the first support shaft 50. The second stack member 20 and the elastic member 57 constitute a second stacker S2 for stacking and holding printed sheets.

A cover body 42a made of synthetic resin is attached to the support frame 42, and both 42 and 42a constitute a subframe 56. As shown in FIG. 4, this cover body 42a stands up above the printing part of the platen 2 in an operating position, and as shown in FIG.
It is designed to be able to rotate integrally with the support frame 42 around the feed shaft 21 between the retracted position located within 0 and the retracted position located within 0.

A first paper guide 59 is rotatably supported at its upper end by shaft pins 58 protruding from the inner surfaces of both sides near the entrance of the cover body 42a, and its lower end is attached to a support piece 60 on the main frame 1. are facing each other. A protrusion 61 is formed near the shaft attachment portion of the first paper guide 59 . A second shaft pin 62 protruding from both inner surfaces of the cover body 42a above the shaft pin 58 is provided with a second shaft pin 62 that can form a paper path W for the printed paper P in cooperation with the first paper guide 59. A paper guide 63 is rotatably supported at its upper end. An operating piece 64 facing the protrusion 61 is formed on the inner surface of the second paper guide 63, and a subframe 5 is formed on the base end.
A cam piece 65 that protrudes into the inside of the cam piece 6 is formed. A clockwise rotation biasing force in FIGS. 4 and 5 is applied to the second paper guide 63 by a spring (not shown). Further, as shown in FIGS. 4 and 5, a micro switch 66 as a detection device is mounted on the inner surface of the cover body 42a, and the switch piece 66
This micro switch 66 is opened and closed based on the engagement and disengagement between the cam piece 65 of the second paper guide 63 and the second paper guide 63.

Next, the operation of the typewriter configured as described above will be explained. Now, Figure 1 shows the latch lever 19.
The uppermost side of the unprinted sheets P stacked on the first stack member 14 is pressed against the feed roller 22 based on the pressing operation. In this state, as shown in FIG. 4, the subframe 56 is placed in the operating position, and the spring force of the spring acting on the second paper guide 63 causes the protrusion 61 of the first paper guide 59 to move into the second paper guide. 63 is engaged, the tip of the first paper guide 59 is brought into contact with the support piece 60, and a paper path W for the printed paper P is formed between both paper guides 59, 63. Ru. Also, in this state,
The cam piece 65 of the second paper guide 63 is separated from the switch piece 66a of the micro switch 66, and the micro switch 66 is opened. Therefore, no detection signal is output from the microswitch 66.

In addition, as shown in FIG.
is held in a de-energized state, and one end of the actuator 28 engages with the operating end 27a of the clutch spring 27 based on the spring force of the tension spring 29, and the clutch spring 27 is unwound from the shaft cylinder 24 and connected to the driven gear 23. The operational connection with shaft 21 is interrupted.

In this state, when the paper insertion key (not shown) on the keyboard is pressed, the solenoid 30
is excited. As a result, the actuator 28 is rotated clockwise in FIG. 2 against the spring force of the tension spring 29, and one end of the actuator 28 is moved out of the rotational trajectory of the operating end 27a of the clutch spring 27.
Therefore, since the clutch spring 27 is held in a tightly wound state, the clutch spring 27
This brings the shaft cylinder 26 and the shaft cylinder portion 24 of the driven gear 23 into a connected state.

Further, based on the pressing operation of the paper insertion key, the motor 31 is driven to rotate for a predetermined time according to a preset time by a long time timer (not shown).

Therefore, the feed roller 2 is connected to the feed shaft 21 through the drive gear 32, the fourth intermediate gear 34, the driven gear 23, and the connection between the shaft cylinder portion 24 and the shaft cylinder 26.
2 is rotationally driven, and the uppermost paper P is sent out to the platen 2 side along the inner surface of the main frame 10. At this time, the platen 2 is rotated via the second intermediate gear 41 etc. that rotates integrally with the drive gear 32, and the leading edge of the paper P is rotated by the cooperation of the platen 2 and each guide roller 3, 4, 5. When the printing point Q is passed and the printing start position shown in FIG. 4 is reached, the long time timer times out and the rotation of the motor 31 is stopped. At the same time, the solenoid 30 is demagnetized and one end of the actuator 28 is placed within the rotation locus of the actuating end 27a of the clutch spring 27, so that the connection between the driven gear 23 and the shaft cylinder 26 is interrupted, and the feed shaft 21 becomes free rotation.

Then, after a printing operation is performed by a printing head (not shown) and a line feed operation is repeated by the platen 2 based on the rotation of the motor 31,
The leading edge of the paper P passes over the guide plate 8 and is introduced into the paper path W between the two paper guides 59 and 63, and is guided through the path W to the two pull-out rollers 51 and 53. As the driven gear 23 rotates based on the rotation of the motor 31, the first pull-out roller 51 is rotated together with the first support shaft 50 via the first, fifth, and sixth intermediate gears 25, 54, and 55. The second pull-out roller 51 follows the first pull-out roller 51.
The pull-out roller 53 is rotated. Therefore, the printed paper P introduced between the paper guides 59 and 63 is pulled out by the pull-out rollers 51 and 53, and is stored in the second stacker S2, where it becomes one paper P.
Printing ends.

On the other hand, when a sheet P having a different size from the sheet P is to be fed to the platen 2, the sub-frame 56, which is placed in the operating position shown in FIGS. When the first paper guide 59 is rotated backward against the elastic force, the tip of the first paper guide 59 moves along the support piece 60 in conjunction with the subframe 56, and the protrusion 61 and the actuation piece 64 move.
4, the second paper guide 63 is rotated clockwise in FIG. The paper path W is closed. Further, the sub-frame 56 is retracted into the main frame 10 and placed at the retracted position shown in FIG. 5, and the upper part of the paper insertion section of the platen 2 is opened. The outer surface of the subframe 56 and both paper guides 59 and 63 form a flat surface for paper insertion. Therefore, as shown in FIG. 5, the paper P can be inserted between the guide plate 8 above the printing section of the platen 2 and the first paper guide 59 along its flat surface, and the paper P can be inserted between the guide plate 8 above the printing section of the platen 2 and the first paper guide 59. 63, the subframe 56, etc. do not get in the way of paper insertion.

Further, as the second paper guide 63 rotates, the cam piece 65 is engaged with the switch piece 66a to close the micro switch 66, and a predetermined detection signal is sent from the micro switch 66 to a control device (not shown). is output to. Even if the paper insertion key is pressed in this state, the solenoid 30 is not energized, and the spring force of the tension spring 29 causes one end of the actuator 28 to be positioned within the rotational trajectory of the actuating end 27a of the clutch spring 27. is maintained in the same state. On the other hand, a short time timer (not shown) is activated based on the detection signal outputted by closing the micro switch 66, and the motor driving time is changed and set by the timer. Therefore, the rotation amount of the platen 2 rotated via the drive gear 32, the second intermediate gear 41, etc. can be changed, and the insertion amount of the paper P can be changed and set. That is, when inserting the interrupt paper P, the motor 3
1 rotates for the time it takes for the interruption paper P to reach the printing start position from the rear of the platen 2.

Then, after the printing operation and the editing operation are completed,
By cooperation of the platen 2 and the guide rollers 3 to 5, the printed paper P is discharged onto the flat surface via the guide plate 8. Even in this case of ejection, the second paper guide 63, subframe 56, etc. do not get in the way.

On the other hand, when inserting the interruption sheet P, the driven gear 23 is rotationally driven via the fourth intermediate gear 34, but one end of the actuator 28 is disposed within the rotation locus of the operating end 27a of the clutch spring 27. Therefore, when the operating end 27a engages the actuator 28 as the driven gear 23 rotates, the driven gear 2
3 and the shaft cylinder 26 are disconnected. Therefore, rotational driving of the feed roller 22 is reliably prohibited,
The paper P in the first stacker S1 is never fed out. Therefore, printing can be performed reliably only on the interruption paper P.

Effects As detailed above, according to this invention, the first
When feeding various types of paper that are different in size from the paper on the stacker to the printing device, the drive of the feed roller can be reliably inhibited by simply closing the paper path without performing any special key operations. In addition to being able to form a flat part for inserting and ejecting interrupt paper, it is possible to easily perform operations for transitioning to interrupt printing and printing operations for interrupt printing, as well as for opening and closing the paper guides. Depending on the mode, you can open or close the paper path,
Since it is possible to open and close the insertion slot for interrupt paper, and to form a flat part that smoothly guides interrupt paper when inserting and ejecting it, it is possible to reduce the number of parts needed to support interrupt printing. It has this excellent effect.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of a typewriter that embodies this idea, Figure 2 is a front sectional view of the main parts, and Figure 3 is a typewriter that embodies this idea.
FIGS. 4 and 5 are explanatory views of the operation of the stacker, and FIGS. 4 and 5 are explanatory views of the operation of the automatic paper feeding device. First stacker S1, second stacker S2, feed roller 22, second paper guide 63, micro switch 66 as a detection device, paper P, paper path W.

Claims (1)

[Claims for Utility Model Registration] The paper P stacked in the first stacker S1 is fed one by one to the printing device by the feed roller 22, and the printed paper P is passed through the paper path W and pulled out by the rollers 51 and 53. 2 Statzka S2
In the paper processing device for guiding the paper to the paper path, the pair of paper guides 59 and 63 that can be opened and closed with each other are provided at the paper path entrance, a detection device 66 that detects the opening/closing state of the paper guides 59 and 63, and the detection device 66 that detects the opening/closing state of the paper guides 59 and 63; A control means for driving and controlling the feed roller 22 based on the detection result of the device 66, and the paper guides 59, 63 form a paper path W between the paper guides 59, 63 in the open state, and an interrupt While closing the paper P insertion slot, in the closed state, both the paper guides 59 and 63 form a flat part from which the cut-out paper P is ejected, and the end of the flat part is positioned at the cut-off paper P insertion slot. A paper processing apparatus characterized in that the drive means prohibits the drive of the feed roller 22 when the detection device 66 detects the closure of the paper path W.