JP3350254B2 - Rotary printing 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 rotary printing apparatus in which a stencil made in a plate making section is wound around a plate cylinder and then the plate cylinder is rotated to perform printing.

[0002]

2. Description of the Related Art As a method of winding a stencil sheet made in a stencil making section around a plate cylinder, a stencil sheet is transferred while rotating both a feed roller and a discharge roller, and the stencil sheet is transferred to the stencil sheet. After fixing the leading edge of the stencil sheet to the plate cylinder, stop the discharge roller, make the stencil sheet while transferring the stencil sheet only by rotating the feed roller, make the stencil for one plate, and then press it all at once. There is a method of wrapping around the torso.

[0003]

In the former case, if the peripheral speeds of the discharge roller and the printing drum in the plate making section are not the same, the base paper during plate making is pulled by the rotation of the plate cylinder, so that the image formed on the plate is stretched or the base paper is stretched. There is a risk of damage. In the latter case, the one described in Japanese Patent Application Laid-Open No. 2-82566 is known, but according to this, the direction in which the base paper is slackened is not uniquely determined, and it may sometimes be bent upward. It is easily broken and bent easily. Since there is nothing to restrain the slack, there is a problem that when the slack of the base paper is wrapped around the plate cylinder at a stretch, wrinkles are easily formed or easily damaged.

The present invention solves the above-mentioned problems, and provides a rotary printing apparatus capable of uniformly winding a stencil sheet made on a plate cylinder without wrinkles or the like and improving the print quality of a printed material. The purpose is to:

[0005]

In order to achieve the above object, a rotary printing apparatus according to the present invention is characterized in that a plate making means for making a stencil and a starting end of the stencil made by the stencil making means. A plate cylinder for winding the stencil around the cylindrical outer peripheral surface by a predetermined rotation after clamping by the clamping means, and transferring the stencil made by the stencil making means toward the plate cylinder and transport means includes a guide portion of the stencil sheet transfer path Nakanoharu paper guides across the front and rear between the plate making unit and the plate cylinder, in a state sandwiching the sheet from the front and back
A movable guide that varies the length of the base paper transfer path by moving in a direction crossing the base paper surface by its own weight ;
Holds the previous SL movable guide in position, is characterized by comprising a holding means capable of releasing the holding.

In addition, as described in claim 2, the holding means is provided with the movable guide during a period from when the starting end of the base paper is held by the clamp means to when the winding of the base paper around the plate cylinder is completed. It is also possible to adopt a configuration in which the holding is released.

Furthermore, as according to claim 3, may also be configured such that the winding of the base paper to the plate cylinder is provided with a return device for returning said movable guide before Kijo position after completion.

[0008] Further, as set forth in claim 4, the guide is provided.
The portion may be a pair of upper and lower guide plates .

Further, the predetermined rotation of the plate cylinder when the stencil sheet is wound around the plate cylinder may be divided into several times with a stationary period interposed therebetween.

According to a sixth aspect of the present invention, there is provided a reading means for reading an original, and when the reading means reads the original, the reading means is rotated in one direction to relatively move the original and the reading means, and is moved to the plate cylinder. A reading motor that rotates a predetermined direction in the reverse direction after the winding of the base paper is completed, wherein the return device returns the movable guide to a fixed position in conjunction with the rotation of the reading motor in the reverse direction. Is also good.

[0011]

The plate making on the stencil sheet 3 is performed continuously. The stencil sheet 3 has a feed roller 10 at the thermal head 9 portion.
The discharge roller 29 on the side of the plate cylinder 1 is stopped after the end of the stencil sheet 3 is mounted on the plate cylinder 1. For this reason, the stencil paper 3 is
With the passage of time, a slack is generated in the portion of the movable guide 8 between the zero and the discharge roller 29. The slack is constantly guided in the storage chamber 2 by moving the movable guide 8 in the direction intersecting the base paper transport direction. The stencil sheet 3 can be wound around the outer circumference of the plate cylinder 1 and mounted by rotating the plate cylinder 1 by a length corresponding to the slack. At this time, since the stencil sheet 3 is pulled out from the storage chamber 2 via the movable guide 8 in accordance with the rotation amount of the plate cylinder 1, stable mounting without wrinkles or the like can be performed.
The plate cylinder 1 completes the rotation of the stencil sheet 3 by one rotation, but is rotated by dividing one rotation into a plurality of times.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A rotary printing apparatus according to the present invention will be described based on embodiments. FIG. 1 is a side sectional view showing a state where an upper unit of a plate making unit incorporated in the printing apparatus is opened, and FIG. 2 is a side sectional view showing a state where the upper unit is closed. The plate making section is provided on the side of the printing drum (plate cylinder) 1 of the printing apparatus,
A stencil lower unit 5 having a storage chamber 2, a master storage chamber 4 for storing a stencil sheet 3 (roll master) wound in a roll shape, and a rotatable shaft 6 with respect to the stencil lower unit 5. It is composed of a plate making upper unit 7.

The stencil lower unit 5 is for performing "writing" stencil making on the stencil 3 described later, and has a platen roller (feed roller) 10 facing the transport path of the stencil 3. A thermal head (plate making means) 9 is provided on the side of the plate making upper unit 7 which will be described later, and the stencil sheet 3 is inserted between the plate and the platen roller 10. The platen roller 10 is rotationally driven by the pulse motor 55 shown in FIG. 3, and drives and controls the thermal head 9 to perform “writing” plate making on the stencil sheet 3.

The stencil sheet 3 is transferred to the plate cylinder 1 by a platen roller 10 facing the thermal head 9, a discharge roller 29 and a driven roller 30. Here, the peripheral speed of the discharge roller 29 is set to be lower than the peripheral speed of the platen roller 10, so that the platen roller 10 and the discharge roller 29 gradually loosen.
Between the platen roller 10 and the discharge roller 29,
A movable guide 8 for guiding the stencil 3 is provided. The movable guide 8 forms a path for the stencil sheet 3 with a pair of upper and lower guide portions 8a and 8b. The guide portions 8a and 8b need not be plate-shaped, but may be comb-shaped.

On the other hand, the plate making upper unit 7 performs "reading" on the document 11. In the plate making upper unit 7,
Document transfer means and document reading means 64 are provided. The pulse motor 13 is connected to a document separating roller 21 via gears 14 to 20. The connection between them is established by switching the switching means 15 as described later when the pulse motor 13 rotates forward as shown in FIG. The document 11 is read by the reading device while being transported by the rotation of the document separation roller 21. A document feed roller 26 is connected to the pulse motor 13 via gears 23 to 25 and a timing belt 50, and discharges the document 11. A driven roller 27 is in contact with the document feed roller 26. The original 11
And the reading device can be configured to be movable.

FIG. 3 is a sectional side view of the stencil sheet 3 from which the transfer means is extracted. The illustrated write pulse motor 55
The gear 55a rotates the platen roller 10 via the gears 56a, 56b, 10a. At the same time, the discharge roller 29 is rotationally driven by a pulley 56c, a timing belt 57, and a pulley 29b coaxial with the gear 56a.

A clutch means 58 shown in the perspective view of FIG. 4 is provided between the discharge roller 29 and the pulley 29b. This clutch means 58 is constituted by an electromagnetic clutch,
The rotational force of the timing belt 57 is transmitted to the discharge roller 29 or cut off by the drive control of the control means. The clutch means 58 includes an electromagnetic solenoid 58a and two clutch plates 58b and 58c. One clutch plate 58b is fixed to the pulley 29b in the rotation direction. The other clutch plate 58c is fixed to the shaft 29a of the discharge roller 29.

When the electromagnetic solenoid 58a is turned on, the clutch plate 58b is attracted to the clutch plate 58c,
Both are integrated. Thus, the driving force of the write pulse motor 55 is transmitted to the discharge roller 29. When the electromagnetic solenoid 58a is turned off, the clutch plates 58b, 58
Since c is separated, even if the write pulse motor 55 is driven and the timing belt 57 rotates, this driving force is not transmitted to the discharge roller 29, and the discharge roller 29 enters a rotatable stopped state. The discharge roller 29 is formed of an elastic material such as rubber, and the driven roller 30 is formed of metal. The surface of the driven roller 30 is roughened so as not to slip.

FIG. 6 is an exploded perspective view showing a switching mechanism provided in the plate making upper unit 7, and FIG. 7 is a plan sectional view of the same.
The switching means 15 converts the rotational driving force of the pulse motor 13 into the driving force of the document separating roller 21 for the document 11 provided on the upper part, according to the rotation direction of the pulse motor 13 rotatable in any of the forward and reverse directions. Alternatively, the transmission is performed by switching to the return means 60 of the movable guide 8 (sector gear 44) provided at the lower part.

In the switching means 15, a switching plate 46 is rotatably loosely supported on a shaft 45 which rotatably loosely supports integral gears 16a, 16b having a step. One end of a shaft 47 is fixed in parallel with the shaft 45. The gear 17 is loosely fitted and supported on a shaft 47 so as to be rotatable while meshing with the gear 16b. A coil spring 48 is compressed and arranged between the gear 17 and the switching plate 46 with a weak urging force, and presses one side surface of the gear 17 against the E-ring 49. As a result, a frictional resistance greater than the rotational frictional resistance of the switching plate 46 with respect to the shaft 45 is provided between the switching plate 46 and the gear 17.

Therefore, when the pulse motor 13 rotates counterclockwise and the gear 16b rotates clockwise, the rotating force is transmitted to the gear 17 and acts to rotate the gear 17 counterclockwise. The switching plate 46, which has a smaller rotational frictional resistance than the frictional resistance 48, rotates clockwise about the shaft 45 (gears 16a, 16b). Thereby, the gear 17 meshes with the gear 40 as shown in FIG. The rotation of the gear 40 in the clockwise direction causes the movable guide 8 (the sector gear 4
4) Return to the return position.

On the other hand, when the pulse motor 13 rotates clockwise and the gear 16b rotates counterclockwise, the gear 17 acts to rotate clockwise.
6 rotates counterclockwise about the shaft 45. As a result, the gear 17 meshes with the gear 18 as shown in FIG. Due to the rotation of the gear 18 in the counterclockwise direction, the document separating roller 21 rotates clockwise to feed the document 11.

FIG. 8 is a block diagram showing the electrical configuration of the present apparatus. The control unit 62 receives rotation angle information of the main motor of the printing drum 1. Specifically, it is composed of an encoder provided on the main motor and pulse counting means. The slit disk fixed to the rotating shaft of the main motor is detected by an optical sensor, and an angular position is obtained based on the detected number of slits. Further, the control means 62 includes the original 11
Also, a plurality of sensor outputs for detecting the stencil sheet 3 are input. The control means 62 includes a reading pulse motor 13 for “reading” the original 11 and the stencil 3
And the write pulse motor 55 for “writing” is operated synchronously. The read pulse motor 13 performs drive control of forward rotation and reverse rotation, performs a “read” operation at the time of forward rotation, and performs a return operation of the movable guide 8 via the return means 60 at the time of reverse rotation. The control means 62
As described later, one rotation of the printing drum 1 is divided into a plurality of parts, and the rotation is controlled so that the stencil sheet 3 is formed stepwise. Further, it controls the timing of shutting off the electromagnetic clutch 58 for stopping the discharge roller 29 and the timing of operating the variable guide solenoid 34 for releasing the engagement of the movable guide 8.

Next, the operation of the present invention will be described. FIG.
5 is a timing chart showing the operation of each unit of the present device.
When using the present apparatus, the stencil upper unit 7 is opened as shown in FIG. 1 and the roll-shaped stencil sheet 3 is set in the master accommodating chamber 4 of the stencil lower unit 5. By opening the stencil making unit 7, a shutter (not shown) descends into the passage of the movable guide 8 that guides the passage of the stencil sheet 3, and the path of the stencil sheet 3 is closed. In this state, the roll of the stencil sheet 3 is unwound and fed into the path of the movable guide 8 until the leading end of the stencil sheet 3 abuts the shutter. Next, when the plate making upper unit 7 is closed as shown in FIG. 2, the shutter (not shown) retracts outside the transfer path of the base paper. Further, the thermal head 9 is pressed against the platen roller 10 via the stencil sheet 3.

First, as shown in FIG. 5, when the document 11 is placed on the document presence sensor 12, the reading pulse motor 13 rotates clockwise after a predetermined time (2 seconds). As a result, the document separating roller 21 fixed to the rotation shaft of the gear 20 rotates clockwise via the gears 14 to 20, so that the document 11 moves rightward. When the leading end of the document 11 reaches the detection position of the document entry sensor 51, the reading motor 13 is stopped, and then the plate making start key is pressed while the document 11 is sandwiched between the document separating roller 21 and the separating plate 22. In a standby state until a prepress signal is obtained.

Then, when the master making start key is pressed,
The stencil sheet used in the previous printing is discharged by a plate discharging device (not shown). In this plate discharging operation, a main motor (not shown) provided in the printing apparatus is driven, and the printing drum 1 is driven.
Is rotated clockwise to peel off the stencil sheet which has already been set on the printing drum 1 and discard it in a plate discharging box (not shown). At the same time as the driving of the main motor, the writing pulse motor 55 (see FIG. 3) is driven, and the gears 56a, 5
The platen roller 10 rotates clockwise through 6b and 10a, and the stencil sheet 3 is transported to the right in FIG. Thereafter, after the leading end of the stencil sheet 3 is detected by the master standby sensor 28, the rotation of the platen roller 10 is stopped,
The stencil sheet 3 is stopped at a position slightly advanced from the shutter.

After starting the plate discharging operation, the printing drum 1
When the document reaches a predetermined position slightly before the end of the rotation, "reading" of the document 11 is started by the document reading means 64 (timing t1 in FIG. 9). In synchronization with this, "writing (plate making)" on the stencil sheet 3 by the writing means 9 also starts. Then, the printing drum 1 completes one rotation to the plate receiving position in FIG. 2 and when the plate discharging operation is completed, stops at the position in FIG. The rotation angle position of the printing drum 1 can be obtained by clocking each angle position by an encoder and a pulse counting means. The printing drum 1 is provided with an A detection sensor (not shown).
As a result, when the clamp means 52 is located right above as shown in each figure, the A detection position is detected and output. In this embodiment, the angular position of the printing drum 1 is displayed with the A detection position set to 0 degree.

"Reading" from the document 11 is performed by rotating the reading pulse motor 13 clockwise (forward rotation). When the reading pulse motor 13 rotates forward, the document separating roller 21 and the document feed roller 26 rotate, and the document 11 is rotated.
Is transported to the right, and is read by reading means 64 fixedly arranged.

"Writing" on the stencil sheet 3 is performed by the thermal head 9 while the stencil sheet 3 is moved rightward by the platen roller 10 which rotates in conjunction with the rotation of the writing pulse motor 55. For a predetermined period from the start of the "writing", the clutch means 58 is turned on, and the rotation of the writing pulse motor 55 rotates the discharge roller 29 to transfer the stencil sheet 3 to the printing drum 1 by a predetermined amount.
Since the peripheral speed of the discharge roller 29 is lower than that of the platen roller 10, during the period when both rollers 10, 29 are rotating,
Gradually, the stencil sheet 3 becomes loose. Both the “reading” of the original 11 and the “writing” operation of the stencil 3 are performed by continuously moving the original 11 and the stencil 3. Then, as described below, the control unit 62 wraps the stencil sheet 3 after "writing" on the stencil sheet 3 side by rotating the printing drum 1 a plurality of times.

First, as “writing” progresses,
The leading end of the stencil sheet 3 reaches between the discharge roller 29 and the driven roller 30 via the fixed guide 32 and the movable guide 8. Further, by the rotation of the discharge roller 29, the clutch means 58 is disengaged when reaching the clamp means 52 via the fixed guide 33 (timing t3). As a result, the discharge roller 29 is stopped, and the clamp means 52 is opened and closed before and after to fix the leading end of the stencil sheet 3 to the printing drum 1. Also at this time, the stencil sheet 3 is continuously sent to the printing drum 1 by the "write" plate making in the thermal head 9 portion by the rotation of the platen roller 10, but the discharge roller 29 portion is stopped. Is not done.

Until the stencil sheet 3 is fixed to the clamping means 52 on the printing drum 1, the locking of the locking means 36 of the movable guide 8 in FIG. 10 is released. FIG. 10 is a side view seen from the opposite side of FIG. First, when the write pulse motor 55 rotates a predetermined pulse from the timing t1 (timing t2), the variable guide solenoid 34 shown in FIG. 10 is turned on for a predetermined time. When the variable guide solenoid 34 is turned on, the link 35
a rotates counterclockwise about the shaft 35b, and the link 35
The pin 37 a comes off the hook 53 provided on the movable guide 8. Thereafter, when the variable guide solenoid 34 is turned off, the stencil sheet 3 that has undergone platemaking is loosened between the platen roller 10 and the discharge roller 29, and the slack causes the movable guide 8 to move around the shaft 38 by its own weight. It turns slightly.

Thereafter, the variable guide solenoid 34 is immediately turned on.
Is turned off, and the pin 37 returns to the return position. However,
Since the movable guide 8 has already been rotated, it does not engage with the hook 53 in this state. Thereafter, the movable guide 8 returns to the return position only by the tension of the stencil sheet 3 between the platen roller 10 and the discharge roller 29 (that is, the pin 37 is connected to the hook 5) until time t8 when the mounting of the stencil sheet on the printing drum 1 is completed.
3).

During the "writing" operation, the stencil sheet 3 on which the writing has been completed is transferred to the platen roller 10 which rotates continuously.
As a result, the sheet is sent out so as to increase the slack amount with the discharge roller 29 in the stopped state. The movable guide 8 has a shaft 38 by its own weight corresponding to the slack generated in the stencil 3.
5 as shown in FIG. 5 (see FIG. 1).
0 means clockwise). At this time, the stencil sheet 3 is always guided through the movable guide 8 composed of a pair of upper and lower guide plates 8a and 8b. Therefore,
When the movable guide 8 rotates, the stencil sheet 3 is slackened in accordance with the movement of the movable guide 8, so that the slack direction can be made constant, and unnecessary wrinkles and the like do not occur. The turning state of the movable guide 8 is described as a turning locus in FIG.

The turning on of the variable guide solenoid 34 for freeing the movable guide 8 is started from the start of the writing operation (writing pulse motor 55).
This is the time (a time t2) when a predetermined period has elapsed and a predetermined number of application pulses have been supplied to the write pulse motor 55. After the writing further proceeds and the slack stencil sheet 3 cannot be absorbed by the rotation of the movable guide 8, the stencil sheet 3 sent out by the platen roller 10 is further stored in the storage chamber 2. (The state of the stencil sheet 3 indicated by the two-dot chain line in FIG. 5, but does not appear in the movement trajectory of the movable guide 8 in FIG. 9).

At time t4 when the number of pulses applied to the write pulse motor 55 reaches the first predetermined number of pulses from the start of the write operation, the main drum rotates the print drum 1 by a predetermined angle (for example, 45 degrees). And the storage room 2
The stencil sheet 3 having been written and stored in the printing drum 1
To take up.

At this time, the clutch means 58 is disconnected, and the discharge roller 29 can freely rotate following the movement of the stencil sheet 3 wound on the printing drum 1. And
The stencil sheet 3 is fed by an amount corresponding to the rotation of the printing drum 1. At this time, when the slackness of the stencil sheet 3 is reduced, the movable guide 8 is spontaneously rotated and returned clockwise (upward) in FIG. However, the rotation of the printing drum 1 is performed by taking up the slack of the stencil sheet 3 without taking up the entire slack, and the hook 53 of the movable guide 8 is
It is controlled to stop temporarily shortly before engaging with No. 7 (time t5).

Thereafter, when the platen roller 10 sends out the stencil sheet 3 during the stop period of the printing drum 1, the stencil sheet 3 is sent into the storage chamber 2, and the movable guide 8 re-weights itself to absorb the slack of the stencil sheet. 5 rotates counterclockwise in FIG. The same action is repeated several times. For example, as shown in FIG.
It is repeated three times from 0 to 150 degrees and from 150 to 360 degrees. Then, "writing" on the thermal head 9
Is completed (time t6), when the written portion of the stencil sheet 3 has passed the cutter 39 for a predetermined distance, the writing pulse motor 55 is stopped, and the cutter 39 is operated to remove the stencil sheet 3 from the stencil sheet 3. It is separated from the roll part (time t7). As shown in FIG. 5, the upper blade 39a of the cutter 39 moves up and down with respect to the fixed lower blade 39b at the operation timing of the cutter motor shown in FIG. As a result, the end of the stencil sheet 3 becomes the last state located in the storage chamber 2. Thereafter, at time t8, the print drum 1 is rotated at a stroke through the remaining angle (150-360 degrees) during one rotation. As a result, the stencil sheet 3 having been made and stored in the storage chamber 2 is wound around the printing drum 1.

When printing is started from the A detection position and the printing drum 1 makes one rotation to the next A detection position (time t9), the rotation of the reading pulse motor 13 is reversed and rotates counterclockwise in FIG. Timing t9). Then, the gear 17 is disengaged from the gear 18 and meshes with the gear 40. Gear 4 including this gear 40
The sector gear 44 fixed to the shaft 38 via 1 to 43 constitutes a return means 60 of the movable guide 8. The rotation of the gear 40 causes the sector gear 44 to rotate clockwise in FIG. Since the base of the movable guide 8 is fixed to the shaft 38, the movable guide 8 starts to return to the original position shown in FIG. 2 as the sector gear 44 rotates.

When the movable guide 8 returns to the original position, the hook 53 engages with the pin 37 of the link 35 and the movable guide 8
Are locked in the return position of FIG. At the same time, the movable guide 8
The variable guide sensor detects that has returned (only shown in Fig. 9)
(Timing t10). When the movable guide 8 returns, the reading pulse motor 13 is stopped. At the same time, the write pulse motor 55 is rotated by a predetermined number of pulses, and the leading end of the roll-shaped stencil sheet 3 is moved to a position short of the above-mentioned stopper, thereby completing the entire stencil making operation.

Further, as shown in FIG. 9, the printing drum 1 is rotated 270 times in the third rotation from the start of the printing operation from the A detection position.
Finally, the printing is stopped at the position (time 11) and the printing is in a standby state. However, test printing (first print) is performed from the latter half of the first rotation to the first half of the second rotation. At the time of subsequent printing, the printing drum 1 makes one rotation each time one sheet is printed based on 270 degrees.

In the embodiment described above, the variable guide solenoid 34 is turned on once to disengage the pin 37 from the hook 53 and then turned off immediately, so that the operation of the variable guide solenoid 34 is shortened. Although the power consumption is reduced, the variable guide solenoid 3 is continuously provided during the slack feeding operation with respect to the stencil 3.
4 may be turned on. In this case, the reverse rotation of the write pulse motor 55 turns off the variable guide solenoid 34 immediately before or immediately after the movable guide 8 returns to the initial position by the sector gear 44. Thereby, the stencil sheet 3 is stretched linearly between the platen roller 10 and the discharge roller 29 according to the winding state of the stencil sheet 3 around the printing drum 1, and the guide plate of the movable guide 8 becomes horizontal. Also, the pin 37 does not engage with the hook 53, so that the movable guide 8 can be rotated a plurality of times. In the above-described embodiment, the movable guide 8 is rotated about one axis. However, the guide is configured to move in the direction intersecting the moving direction of the stencil sheet 3 by the platen roller 10 and the discharge roller 29. May be configured to move linearly along the line.

[0042]

As described above, according to the present invention, there is provided a guide portion for guiding the base paper surface in the base paper transfer path between the plate making means and the plate cylinder from the front and back, and guiding the base paper surface in a direction intersecting the base paper surface. The plate making means and the plate cylinder are constituted by a structure comprising a movable guide that makes the length of the base paper transport path variable by moving, and a biasing means that biases the movable guide in a direction to increase the length of the base paper transport path. The direction in which the looseness of the base paper is forcibly generated is restricted to one direction, and the slack of the base paper is absorbed as the base paper transport path length is increased, and the base paper is wound around the plate cylinder. When the paper is passed through the movable guide, it is lightly squeezed and stretched by the movable guide, so that when the slack is generated, the base paper is not irregularly or sharply bent and damaged, and the plate cylinder is not wrinkled. Without causing It can be attached can. In addition, the predetermined rotation of the plate cylinder when winding the preformed base paper around the plate cylinder is performed by being divided into several times with a stationary period in between, so that the base paper is always kept in a constant state regardless of the plate making speed. In addition to being able to be wound around the plate cylinder, a movable guide for absorbing slack of the base paper and a space for accommodating the slack base paper are reduced, so that the entire apparatus can be reduced in size and weight. Further, the reading means for reading the original, and when the reading means reads the original, rotates in one direction to relatively move the original and the reading means, and after the wrapping of the base paper on the plate cylinder is completed, the reading means is rotated in a predetermined direction. With a rotating read motor, the movable guide is returned to a fixed position in conjunction with the rotation of the read motor in the reverse direction,
There is no need to provide a dedicated motor for returning the movable guide, and the cost of the apparatus can be reduced.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a state where an upper unit of the present apparatus is opened.

FIG. 2 is a side sectional view showing a state where the upper unit is closed.

FIG. 3 is a side sectional view showing a means for transferring base paper.

FIG. 4 is a perspective view showing clutch means.

FIG. 5 is a diagram showing a stencil sheet feeding operation by the apparatus.

FIG. 6 is an exploded perspective view showing a switching mechanism.

FIG. 7 is a plan sectional view of the same.

FIG. 8 is a block diagram showing control means.

FIG. 9 is a timing chart showing the operation of each unit.

FIG. 10 is a diagram showing a fixing mechanism of a movable guide.

[Explanation of symbols]

1 ... printing drum, 2 ... storage chamber, 3 ... stencil paper, 4 ...
Master storage room, 5: plate making lower unit, 6: shaft, 7: plate making upper unit, 8: movable guide, 9: thermal head, 10: platen roller, 11: document, 12: document presence sensor, 13: reading pulse motor , 14-20 ...
Gears, 15 switching means, 21 document separating rollers, 22
Separating plate, 23 to 25: gear, 26: original feed roller, 2
7: driven roller, 28: master standby sensor, 29: discharge roller, 30: driven roller, 32: fixed guide, 33:
Fixed guide, 34 ... Variable guide solenoid, 35a ... Link, 35b ... Shaft, 36 ... Locking means, 37 ... Pin, 38
... Shaft, 39 ... Cutter, 40 ... Gear, 41-43 ... Gear,
44 ... sector gear, 45 ... shaft, 46 ... switching plate, 47 ...
Shaft, 48 ... Coil spring, 49 ... E ring, 50 ... Timing belt, 51 ... Document entry sensor, 52 ... Clamp means, 53 ... Hook, 58 ... Clutch means, 60 ... Return means, 62 ... Control means.

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B41L 13/14 B41L 13/04

Claims (6)

(57) [Claims] 1. A stencil making means for making a stencil sheet, and a clamp means for holding a starting end of the stencil sheet made by the stencil making means. a plate cylinder wrapped, said base paper plate-making by the plate making means and transfer means for transferring toward the plate cylinder, the guide portion for guiding across the sheet transport path Nakanoharu paper between said plate making unit and the plate cylinder from the front and back With the base paper sandwiched from the front and back
A movable guide in which the length of the base paper transport path in the variable by the own weight while moving the cross direction of the original paper, holds a pre-Symbol movable guide in position, releasable holding the holding Means, and a rotary printing apparatus. 2. The holding means releases the holding of the movable guide from a time when the starting end of the base paper is held by the clamp means until the winding of the base paper around the plate cylinder is completed. Rotary printing device. Wherein the plate rotary printing machine of the base paper winding is claim 1, further comprising a return device for returning said movable guide before Kijo position after completion of the cylinder. 4. The rotary printing apparatus according to claim 1 , wherein said guide portion is a pair of upper and lower guide plates . 5. The rotary printing apparatus according to claim 1, wherein the predetermined rotation of the plate cylinder when winding the stencil made on the plate cylinder is performed several times with a stationary period therebetween. 6. A reading means for reading an original, and when the reading means reads the original, the reading means rotates in one direction to relatively move the reading means and the original, and after the winding of the base paper around the plate cylinder is completed. And a reading motor that rotates a predetermined direction in a reverse direction, wherein the return device returns the movable guide to a fixed position in conjunction with rotation of the reading motor in a reverse direction.
3. The rotary printing apparatus according to 3 .