JPS6140179A - Safety device for rotary-type stencil duplicator - Google Patents

Abstract

PURPOSE:To securely prevent a form cylinder from being drawn out where a press roller is pressed against the form cylinder and thereby protect the form cylinder and the press roller, by providing an electric-type lock device which locks a form cylinder in a printing position when electric current is not passed, and unlocks the form cylinder when an electric current is passed. CONSTITUTION:When a printing-stopping switch is operated and the press roller 3 is located in a released position apart from the outer peripheral surface of the form cylinder 2 while the cylinder 2 is located at an initial rotating position, an electric current is passed to a solenoid device 88, and a lock-holding lever 87 is moved to a position for permitting unlocking, so that only in this condition, a lock lever 81 can be manually operated to disengage an engaging pawl 82 thereof from an engaging hole 82, resulting in that a drawer arm 75 can be drawn from a contained position to an operative position. By this, a fixed pin 78 and an engaging groove 77 are disengaging from each other so that the form cylinder 2 can be moved from the printing position in the machine to a drawn- out position in the exterior of the machine.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a safety device for a rotary stencil printing machine, and more particularly to a safety device for a rotary stencil printing machine with a retractable cylindrical plate cylinder.

A conventional rotary stencil printing apparatus includes a cylindrical plate cylinder and a press roller that is selectively pressed against the cylindrical plate cylinder, and the cylindrical plate cylinder is aligned with the printing position within the machine and the machine. A rotary stencil printing device which is movable in the axial direction with respect to the machine frame between the outer drawer position and the outside drawer position is disclosed in Japanese Patent Application No. 57-'122590 (Japanese Unexamined Patent Publication No. 59-1989) filed by the same applicant as the present applicant. −
No. 12894).

In a rotary stencil printing device equipped with a removable cylindrical plate cylinder as described above, the cylindrical plate cylinder can be easily taken out of the machine for maintenance work or to change the printing ink color. The cylindrical plate cylinder can be replaced quickly and easily.

Problems to be Solved by the Invention The drawing movement of the cylindrical plate cylinder from the printing position to the drawing position should be performed with the press roller separated from the cylindrical plate cylinder, and the press roller should be moved away from the cylindrical plate cylinder. If the cylindrical plate cylinder is pulled out as described above while being pressed toward the plate cylinder, the press roller or the cylindrical plate cylinder may be damaged due to mutual interference between the press roller and the cylindrical plate cylinder. There is a risk that the press roller will be pressed against the outer peripheral surface, that is, the screen mesh, especially in the case of a type of cylindrical plate cylinder whose outer peripheral surface is wrapped with a screen mesh that allows ink to pass through. When the cylindrical plate cylinder is pulled out in the axial direction from the printing position to the pull-out position in this state, not only the attached stencil printing base paper is wrapped around the outer peripheral surface of the cylindrical plate cylinder. The screen mesh may also be destroyed.

Under normal operating conditions, the cylindrical plate cylinder is stopped at an initial rotational position in which the paper clamping means is located above, and during this stopped state the press roller is pulled away from the cylindrical plate cylinder, but during the printing process If a paper jam or power outage occurs, or the power is cut off, the cylindrical plate cylinder may press the press roller at an unexpected rotational position and stop rotating. When the cylindrical plate cylinder is pulled out at this time, the cylindrical plate cylinder and the press roller rub against each other, and an unreasonable force is applied to the cylindrical plate cylinder and the press roller, as described above. Alternatively, there is a risk that the press roller may be damaged.

In view of the above-mentioned problems, the present invention has been proposed to reliably prevent the cylindrical plate cylinder from being pulled out and moved when the press roller is pressed against the cylindrical plate cylinder, and to remove the cylindrical plate cylinder and the press roller. The purpose is to provide safety equipment that protects people.

Means for Solving the Problems According to the present invention, in a safety device of a rotary stencil printing machine equipped with a retractable cylindrical plate cylinder as described above, when the power is not energized, the above-mentioned an electric locking device that locks the cylindrical plate cylinder at the printing position and releases the lock of the cylindrical plate cylinder at the printing position when electricity is applied; and a position where the press roller is separated from the cylindrical plate cylinder. This is accomplished by a safety device for a rotary stencil printing machine having a control device that allows the electrical locking device to be energized at certain times.

Effects and Effects of the Invention According to the above-described configuration, the electric locking device is allowed to be energized when the press roller is separated from the cylindrical plate cylinder, but at other times, the electric locking device is energized. Since the device is not energized and the cylindrical plate cylinder is locked in the printing position by the electric locking device, it is reliably prevented that the cylindrical plate cylinder is pulled out and moved while the press roller is pressed. be done. The electric locking device is in a locked state when the electricity is not applied, locking the cylindrical plate cylinder in the printing position and preventing the cylindrical plate cylinder from being pulled out and moved. Even when the power supply to the printing device is stopped by the power supply cutter 1-, the cylindrical plate cylinder is kept locked in the printing position by the electric locking device, and even at this time, the cylindrical plate cylinder is In order to prevent damage to the press roller, the cylindrical plate cylinder is reliably prevented from being pulled out.

The determination as to whether the press roller is separated from the cylindrical plate cylinder may be directly performed by a sensor that detects the position of the press roller. Furthermore, since the position of the press roller changes in relation to the rotational phase of the cylindrical plate cylinder, it is possible to determine whether or not the cylindrical plate cylinder is separated from the press roller indirectly from the rotational phase of the cylindrical plate cylinder. It may also be performed by other control factors that vary in relation to the operation of the press roller, or by a combination thereof.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail by way of embodiments with reference to the accompanying drawings.

FIG. 1 is a schematic configuration diagram showing an example of a rotary stencil printing apparatus with a plate-making device which is suitable for incorporating a safety device according to the present invention. In the figure, reference numeral 1 indicates a machine frame of a rotary stencil printing device, and the machine frame includes a cylindrical plate cylinder 2, a press roller 3, a paper feed table 4, a paper feed roller 5, A paper feeding device 7 including a paper feed roller 6, a belt conveyor type paper discharging device 8, a paper discharging table 9, and a roll storage unit 10 that rotatably and replaceably accommodates a roll R of stencil printing base paper. , a thermal plate making and printing device 11 , a base paper cutter 12 , a document mounting table 13 ,
A document discharge path 14 is provided.

The cylindrical plate cylinder 2 is composed of, for example, a metal cylinder with a porous structure and a laminated body of screen mesh wrapped around the outer circumferential surface of the cylinder. The electric motor 2 has a clamping means 15 for selectively locking the parts, and a hole plate printing base paper S is wrapped around the outer peripheral surface of the electric motor 2.
0, it is rotated counterclockwise in the figure around its own central axis.

An ink supply device 19 including a squeegee roller 16, a doctor rod 17, and an ink supply pipe 18 is provided in the cylindrical plate cylinder 2, and the ink supply device supplies the ink tube 21 according to the rotation of the cylindrical plate cylinder 2. More cylindrical plate cylinder 2
Printing ink is supplied to the outer peripheral surface of the printer.

Plate making device [11 is a light source box 2 which has a light source device 22 and has a transparent glass light transmitting plate 23 attached to the upper opening.
4, a press plate 25 that is fixedly disposed above the light source box 24 and faces the light transmitting plate 23, and a release position where the light transmitting plate 22 is separated from the press plate 25, and the light transmitting plate 22 is in the suppressing plate 25. The light source box 24 is provided with a drive device 26 that reciprocates the light source box 24 in the vertical direction in the figure in order to move the light source box 24 between the pressed position and the pressed position.

2 and 3 show a drive device for the press roller 3. FIG. The press roller 3 is rotatably supported by a roller bracket 30 around its own central axis, and the roller bracket 30 is fixed to a support shaft 31 rotatably supported by the machine frame 1. Due to the rotation of the support shaft 31, the press roller 3 is moved together with the O-ru bracket 30 to a pressing position (see FIG. 2) where it is pressed toward the outer circumferential surface of the cylindrical plate cylinder 2 and is separated from the outer circumferential surface of the cylindrical plate cylinder 2. released position (3rd
(see figure). Support shaft 3
One end of a drive lever 32 is fixedly connected to 1,
Further, the support shaft 31 rotatably supports the intermediate lever 33 at its intermediate portion.

The drive lever 32 is connected to a connecting pawl 35 by a pivot 34 at the other end.
The connecting pawl selectively engages an engaging portion 37 provided at one end of the intermediate lever 33 with an engaging piece portion 36 to connect the driving lever 32 and the intermediate lever 33. Selective drive connection is provided. The intermediate lever 33 is pivotally connected at its other end to one end of a cam connecting link 39 by a pivot 38, and the cam connecting link is connected at its other end to a cam follower roller 41 provided at one end of a cam follower lever 40. It is pivotally connected to a roller support shaft 42 . The cam follower lever 40 is attached to the machine frame 1 by a pivot 43 at the other end.
More rotatably supported.

The cam follower roller 41 engages with a cam 45 attached to a camshaft 44, and the cam rotates once in the horizontal direction in the figure in synchronization with the rotation of the cylindrical plate cylinder 1. It looks like this.

The connecting pawl 35 is biased clockwise in the figure by the spring force of the spring 46, that is, in the direction away from engagement with the intermediate lever 33, and is pivoted to the machine frame 1 by a pivot shaft 47 and is biased by the solenoid device 48. The lever 49, which is driven in the clockwise direction in the figure, is driven in the counterclockwise direction in the figure against the spring force of the spring 46, that is, in the direction in which it engages with the intermediate lever 33, and the cylindrical plate cylinder 2 is moved to the initial stage. When the clamping means 15 is in the rotated position, i.e. approximately 180 degrees rotated from the upper rotated position as shown in FIG. When the intermediate lever 33 is engaged with the intermediate lever 3 by being driven in the direction, the engaging piece portion 36 and the engaging portion 37 are engaged with each other as shown in FIG. When the cylindrical plate cylinder is in a rotational position other than a position approximately 180 degrees rotated from the initial rotational position due to non-returning engagement with the intermediate lever 33.
It is designed to self-maintain engagement with.

When the energization to the solenoid device 4B is stopped while the cylindrical plate cylinder 2 is at a position approximately 180 degrees rotated from the initial rotational position, the lever 49 is rotated counterclockwise from the rotational position as shown in FIG. As a result, the connecting pawl 35 rotates clockwise in the figure due to the spring force of the spring 46, and the latch piece 36 disengages from the engaging portion 30, thereby causing the drive lever to move. 32 and the intermediate lever 33 are separated from the driving connection. At this time, the support shaft 31 is separated from the drive connection with the cam 45, and the press roller 3, together with the roller bracket 30, comes into contact with the stopper piece 50 of the drive lever 32 against the stopper screw 51 provided on the machine frame 1 due to its own weight. Cylindrical plate cylinder up to position 2
is rotated in a direction away from the outer circumferential surface of the cylindrical plate cylinder 2, and is always held at a released position separated from the outer circumferential surface of the cylindrical plate cylinder 2, regardless of the rotation of the cam 450, in other words, regardless of the rotational phase of the cylindrical plate cylinder 2. Ru.

On the other hand, the cylindrical plate cylinder 2 is approximately 180 degrees from the initial rotational position.
When the solenoid device 48 is in the rotated position
When the lever 49 rotates clockwise in the figure after being energized, the connecting pawl 35 rotates counterclockwise in the figure against the spring force of the spring 46, whereby the engaging portion 37, the driving lever 32 and the intermediate lever 33 are drivingly connected. At this time, the rotational movement of the cam follower lever 40 due to the rotation of the cam 45 is transmitted to the support shaft 31 via the pivot shaft 42, the cam link 39, the pivot shaft 38, the intermediate lever 33, the connecting pawl 35, and the drive lever 32. The shaft 31 reciprocates in synchronization with the rotation of the cam 45, and the press roller 3 is separated from the outer peripheral surface of the cylindrical plate cylinder 2 in synchronization with the rotation of the cylindrical plate 1i2 as shown in FIG. in the released position and the cylindrical plate cylinder 2 as shown in FIG.
It moves back and forth between the pressing position where it is pressed toward the outer peripheral surface of the press.

Due to the action of the press roller drive device as described above, during the printing process, the cylindrical plate cylinder 2 is moved approximately 18 mm from the initial rotational position.
When the solenoid device 48 is energized at the 0 degree rotated position, the intermediate lever 33 and the drive lever 32 are driven and connected by the connecting claw 35, and the press roller 3 is moved to the cam 4.
5, the solenoid device 4 is selectively pressed against the outer peripheral surface of the cylindrical plate cylinder 2 in synchronization with the rotation of the cylindrical plate cylinder 2 to avoid collision with the clamping means 15, and when printing is finished, the solenoid device 4
When the energization to 8 is stopped, the connecting claw 35 disengages from the intermediate lever 33 at a position where the cylindrical plate cylinder 2 has rotated approximately 180 degrees from the initial rotation position, and the intermediate lever 33 and drive lever 32 are separated. is separated, and then the cylindrical plate cylinder 2 rotates approximately 180 degrees, so that the cylindrical plate cylinder 2 pulls the press roller 3 away from the cylindrical plate cylinder and stops in the released state. In other words, the duration under normal conditions after printing is completed.
At times, even when the cylindrical form cylinder 2 is in its initial rotational position, the press roller 3 is held in a released position separated from the cylindrical form cylinder 2.

The other end of the drive lever 32 is pivotally connected to a damper rod 53 of an air damper 52 by a pivot 34, so that a damper action can be applied to the reciprocating rotational movement to reduce noise.

4 to 6 show the support arrangement for the cylindrical plate cylinder. The machine frame 1 supports a slide par 61 movably in the horizontal direction via a guide sleeve 60 fixed to the machine frame. Two slide pars 61 are provided parallel to each other and are connected to each other by a connecting member 62 at one end. A holder post 63 is erected at one end of each of the slide pars 61, plate cylinder support bins 64 and 65 are attached to each of the holder posts, and a plate cylinder is attached to the upper end of the holder post 63. The support plate 66 is engaged in a vertically removable manner, and the holder post cooperates with the support bins 64 and 65 to detachably support the plate cylinder support plate 66.

The plate cylinder support plate 66 rotatably supports the cylindrical plate cylinder 2 by a plurality of support rollers 68 that slide on the outer peripheral surface of an annular guide ring 67 attached to one end of the cylindrical plate cylinder 2. . As a result, the cylindrical plate cylinder 2 is attached to the holder post 6.
The machine frame is movable in the axial direction with respect to the machine frame 1 between the printing position inside the machine and the pull-out position outside the machine as shown in FIG. 1
Supported against.

Two inner bars 69 are disposed inside the cylindrical plate cylinder 2 along its axial direction, and the two inner bars are connected to each other by two end plates 72 and connected to connecting pieces 70 and 7.
1 and fixedly connected to the plate cylinder support plate 66. An end plate 72 is located within the cylindrical plate cylinder 2 and includes a squeegee roller 16, a doctor rod 17 and an ink supply pipe 18.
and an ink tube 21, an ink pump 27 for sending printing ink from the ink tube 21 to the ink supply pipe 18, and an electric motor 2 for driving the ink pump.
8 is attached.

The cylindrical plate cylinder 2 has a shaft coupling member 73 at the other end,
When the cylindrical plate cylinder 2 is in the printing position inside the machine, the shaft coupling member is connected to the plate cylinder drive shaft 14 mounted on the machine frame 1 in a torque transmitting manner so that it can be inserted and removed. .

A gear 75 is attached to the plate cylinder drive shaft 74, and the gear is drivingly connected to the electric motor 20 shown in FIG. It has become.

A pull-out arm 75 is attached to the connecting piece 71 by a pivot 76 for moving the cylindrical plate cylinder 2 between the printing position and the pull-out position.

The drawer arm 75 is rotatably provided between a storage position as shown in solid lines in FIG. 5 and an operating position as shown in phantom lines. When the plate cylinder support plate 66 is supported by the holder post 63 and the cylindrical plate cylinder 2 is positioned at the printing position in the machine, the fixing pin provided in the machine frame 1 is inserted into the engagement groove 77 provided in the drawer arm 75. 78 engages with the rotation of the drawer arm 75 from the operating position to the storage position, thereby locking the cylindrical plate cylinder 2 together with the plate cylinder support plate 66 in the printing position.

A support plate 79 is fixed to the machine frame 1, and a locking device for the cylindrical plate cylinder 2 is provided on the support plate. 7 and 8 show a locking device for a cylindrical plate cylinder. The support plate 79 pivotally supports one end of a lock lever 81 by a pivot 80, and the lock lever is selectively inserted into an engagement hole 83 provided in the drawer arm 75 by an engagement claw 82 provided at the other end. The pull-out arm 75 is held in the storage position. Lock lever 8
1 is caused by the compression coil spring 84 at the time 81 as seen in FIG.
The engaging claw 82 is biased in the rotational direction, that is, in the direction in which the engaging claw 82 engages with the engaging hole 83. By manually pushing the handle portion 85 in the counterclockwise direction in the figure, the engaging claw 82 is biased.
is spaced apart from engagement with the engagement hole 83.

A lock holding lever 78 is attached to the support plate 79 by a pivot 86.
As shown in the figure, the lock holding lever is a lock that engages with the lock lever 81 and prevents the lock lever from moving in the counterclockwise direction in the figure, that is, in the lock release direction. It is arranged to move between the release prohibition position and the lock release permission position, which allows the lock lever 81 to move freely in the lock release direction, as shown by the imaginary line in the figure. The lock holding lever 87 is
It is drivingly connected to the plunge ↑I89 of the locking solenoid device 88, and when the solenoid device 88 is not energized, it is driven to the lock release prohibition position by the relatively strong spring force of the compression coil spring 89.
When power is supplied to 8, it is driven to the lock release permission position.

Power supply control to the solenoid device 88 is performed by a control device 100 as shown in FIG. The control device 100 controls the printing operation in addition to controlling the energization of the solenoid device 88. The control device 100 controls the printing operation by controlling the print start switch 101 and the print stop switch 102, which are operated by hand. The press roller position sensor 104 receives information on whether or not the repress roller 3 is in the pressing position where it is pressed against the outer peripheral surface of the cylindrical plate cylinder 2, and the plate cylinder rotation phase. Each sensor 105 provides information regarding whether or not the cylindrical plate cylinder 2 is at the initial rotational position, and in accordance with this information, the operation of the electric motor 20, solenoid device 48, and other various printing actuators 106 (not shown) is controlled. However, information from the print stop switch 102 detects that the printing operation has been completed, and the press roller position sensor 104 detects that the press roller 3 is not in the pressing position and the outer periphery of the cylindrical plate cylinder 2 is detected. When the plate cylinder rotation phase sensor 105 detects that the cylindrical plate cylinder 2 is in the release position separated from the surface and is in the initial rotation position, the solenoid device 88 is energized; At this time, the energization to the solenoid device 88 is stopped.

As shown in FIGS. 2 and 3, the press roller position sensor 104 is operated by a detection piece 54 integrally provided on the roller bracket 30, and detects whether the press roller 3 is in the pressing position or not. It is designed to detect. The press roller position sensor 105 may be constituted by a contact type electric switch such as a microswitch or a photoelectric type non-contact switch.

According to the above-described configuration, when the printing operation has been completed, that is, the print stop switch 102 has been operated, and the press roller 3 is in the release position separated from the outer peripheral surface of the cylindrical plate cylinder 2, and When the cylindrical plate cylinder 2 is in the initial rotation position, the solenoid device 88 is energized and the lock holding lever 87 moves to the lock release permission position, so the lock lever 81 is only operated by hand at this time. The engagement claw 82 is disengaged from the engagement hole 83, and the pull-out arm 75 can be pulled out from the storage position to the operating position, thereby disengaging the engagement between the fixed bin 78 and the engagement groove 77. The displacement allows the cylindrical plate cylinder 2 to be moved from a printing position inside the machine to a draw-out position outside the machine. At this time, the press roller 3 is in a position separated from the cylindrical plate cylinder 2, so even if the cylindrical plate cylinder 2 is moved from the printing position inside the machine to the drawing position outside the machine along its axial direction, the press roller 3 3 and the cylindrical plate cylinder 2 do not collide with each other, and the cylindrical plate cylinder 2 or the press roller 3 is not damaged.

On the other hand, when the above conditions are not met, the solenoid device @88 is not energized, so the lock holding lever 87 is located at the lock release prohibition position, and the lock lever 81 is operated in the lock release direction. The pull-out arm 75 is locked in the storage position. Therefore, at this time, the drawer arm 75 is not pulled out to the operating position, and the fixing pin 78 is assembled in a state in which it is engaged with the engagement groove 77, whereby the cylindrical plate cylinder 2 and the plate cylinder support plate 66 are engaged in the printing position. The drawer is stopped and movement of the drawer is prevented. This reliably prevents the cylindrical plate cylinder 2 from being moved from the printing position inside the machine to the draw-out position outside the machine when the press roller 3 is in a state of being pressed toward the cylindrical plate cylinder 2.
Damage to the cylindrical plate cylinder 2 and the press roller 3 due to collision between the cylindrical plate cylinder 2 and the press roller 3 is avoided.

Further, in the embodiment described above, the solenoid device 8 is activated only when the press roller 3 is in the release position separated from the cylindrical plate cylinder 2 and the cylindrical plate cylinder 2 is in the initial rotation position.
8 is energized, the rotational position of the cylindrical plate cylinder when replacing the cylindrical plate cylinder is limited, and as a result, the rotational phase of the replacement cylindrical plate cylinder is set in advance to the initial rotational position. The exchange can always be performed reliably and easily without requiring rotational phase adjustment between the cylindrical plate cylinder 2 and the main body of the printing apparatus.

When the solenoid device 88 is not energized, the lock holding lever 87 is located at the lock release prohibition position as described above, so even if the power supply to the printing device is stopped due to a power outage or power cut during printing, Even if the lock holding lever 87 is located at the lock release prohibition position,
The lock lever 81 is prohibited from being operated in the lock release direction to prevent the cylindrical plate cylinder 2 from being moved from the printing position inside the machine to the drawing position outside the machine.

In the embodiment described above, the locking device prevents the drawer arm 75 from being pulled out from its storage position to the operating position, and the cylindrical plate cylinder 2 is moved from the printing position inside the machine to the pullout position outside the machine. However, the electric locking device of the safety device according to the present invention may be configured to selectively prevent the slide par 61 from moving relative to the machine frame 1, for example. Preferably, this electric locking device is configured to lock the cylindrical plate cylinder 2 at the printing position when the electric current is not applied, and to release the lock of the cylindrical plate cylinder 2 at the printing position when the electric current is applied.

Further, the safety device of the rotary stencil printing apparatus according to the present invention may omit the press roller position sensor 105, and in this case, it detects whether the press roller 3 is in a position separated from the cylindrical plate cylinder 2. For example, print stop switch 1
Judging from the operation status of 02 and the rotational phase of the cylindrical plate cylinder 2,
When it is detected that the print stop switch 102 has been operated and the printing operation has been completed, and the cylindrical plate cylinder 2 is at the initial rotation position, the press roller 3 will move the cylindrical plate unless the press roller drive device is operating abnormally. Since the solenoid device 88 is located at a position separated from the shell 2, when this condition is met, the solenoid device 88 may be energized. In addition, the energization of the solenoid device 88 is performed under the condition that the cylindrical plate cylinder 2 and the press roller 3 do not collide with each other even when the cylindrical plate cylinder 2 is pulled out and moved from the printing position inside the machine to the draw-out position outside the machine. Alternatively, the solenoid device 88 may be energized only when a hand-operated cylindrical plate cylinder withdrawal confirmation switch is operated.

Although the present invention has been described in detail with respect to specific embodiments above, the present invention is not limited thereto.
It will be apparent to those skilled in the art that various embodiments are possible within the scope of the invention.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing an example of a rotary stencil printing device with a suitable plate-making device incorporating a safety device according to the present invention, and FIGS. 2 and 3 respectively show drive of a press roller of the rotary stencil printing device. FIG. 4 is a front view showing one embodiment of a rotary stencil printing device incorporating a safety device according to the present invention, and FIG. 5 is a side view showing the rotary stencil printing device shown in FIG. 4. 6 is a perspective view showing the cylindrical plate cylinder and its surrounding members of the rotary stencil printing device shown in FIGS. 4 and 5, and FIG. 7 is a side view of the rotary stencil printing device according to the present invention. FIG. 8 is a front view of the rotary stencil printing apparatus according to the present invention shown in FIG. 7, and FIG. 9 is a side view showing one embodiment of the rotary stencil printing apparatus according to the present invention. FIG. 2 is a block diagram showing a control system of the device. 1... Machine frame, 2... Cylindrical plate cylinder, 3... Press roller. 4...Paper feed tray, 5...Paper feed roller, 6...Paper feed roller. 7... Paper feeding device, 8... Paper ejecting device, 9... υ1 paper stand, 10... Roll storage unit, 11... Prepress printing device, 12... Base paper cutter, 13...・Manuscript mounting table, 14
・・・Document output table. 15... Clamping means, 16... Squeegee roller. 17...Doctor rod, 18...Ink supply pipe. 19... Ink supply device, 20... Electric motor, 21.
... Ink tube, 22 ... Light source device, 23 ...
Light transmitting plate. 24...Light source box, 25...Press plate, 26...
- Drive device, 27... Ink pump, 28... Electric motor, 30... Roller bracket, 31... Support shaft,
32... Drive lever, 33... Intermediate lever, 34.
... Pivot, 35 ... Connecting claw, 36 ... Engagement piece part, 3
7... Engaging portion, 38... Pivot, 39... Cam connecting link, 40... Cam follower lever, 41... Cam follower roller, 42... Roller support shaft, 43...
・Pivot, 44...Camshaft, 45...Cam, 46...
・Spring, 47... Pivot, 48... Solenoid device,
49... Lever, 50... Stopper piece, 51...
・Stopper screw, 52...Air damper, 53・
... Damper rod, 54 ... Detection piece, 60 ... Guide sleeve, 61 ... Slide bar, 62 ... Connection member. 63... Holder post, 64.65... Plate cylinder support pin. 66... Plate cylinder support plate, 67... Guide ring, 68
... Support roller, 69 ... Inner bar, 70.71
... Connection piece, 72 ... End plate, 73 ... Shaft coupling member, 74 ... Plate cylinder drive shaft, 75 ... Gear, 76 ...
Pivot, 77... Engagement groove, 78... Fixed pin, 79...
... Support plate, 80... Pivot. 81...Lock lever 982...Engagement claw, 83...
・Engagement hole, 84... Compression coil spring, 85... Handle portion, 86... Pivot, 87... Lock holding lever, 8
8... Lock solenoid device, 89... Compression coil spring, 91... Contact piece, 92... Micro switch, 100... Control device, 101... Print start switch, 102... Print stop switch, 103
...Various sensors. 104...Press roller position sensor, 105...Plate cylinder rotation phase sensor, 106...Various actuator patents for printing Applicant: Riso Kagaku Kogyo Co., Ltd.
Patent attorney Masatake Akashi Figure 2 Figure 3 (self-motivated) Procedural amendment dated August 1, 1985, indication of case Patent application No. 161180/2 of 1988
, Name of the invention Safety device for rotary stencil printing device 3, Relationship to the case of the person making the amendment Patent applicant address 2-20-15 Shinbashi, Minato-ku, Tokyo Name Name
Riso Kagaku Kogyo Co., Ltd. Representative: Noboru Haneyama 4, Agent Address: 1-5'f11 Shinkawa, Chuo-ku, Tokyo 0104
No. 19 Kayabacho Nagaoka Building 3rd floor Telephone 551-41718,
Contents of the amendment As shown in the attached document (1) "Operational" in line 18 of page 1 of the specification is corrected to "industrial". (2) Correct “Paper feed tray 4 and” in line 17 of page 6 to “Paper feed tray 4 and 1.” (3) Correct “Paper feed roller” in line 17 to line 18 of page 6. 5 and J are corrected as "paper feed roller 5 and J." (4) "-plate printing device 11" in the second line of page 7 is corrected as "plate making device 11." (5) Correct "screen mesh" in lines 6 and 7 of page 7 to "r" and "j". (6) On page 7, line 7, "by the laminate" is corrected to "by the laminate." (1) On page 7, lines 9 and 10, ``The base paper for stencil printing is S'' is corrected to ``The base paper for stencil printing is S.'' (8) On page 7, line 17, change “to the outer surface” to “1 to the inner surface.”
I am corrected. (9) Correct "compression coil spring 84" in line 20 of page 16 to "r spring 84". (10) Add r information to ``Kamigata wo'' on page 18, line 10 of the same page.
I am corrected. (11) "Prepress printing device" on page 25, line 8 is corrected to r platemaking device II. (12) "Compression coil spring" on page 26, line 14 of the same page is r
Correct it as spring j.

Claims (1)

[Claims] It has a cylindrical plate cylinder and a press roller selectively pressed toward the cylindrical plate cylinder, and the cylindrical plate cylinder has an axis line relative to the machine frame between a printing position inside the machine and a drawer position outside the machine. In a safety device of a rotary stencil printing device, which is provided so as to be movable in a direction, the cylindrical plate cylinder is locked at the printing position when the power is not energized, and the cylindrical plate cylinder is locked at the printing position when the power is energized. A rotary type having an electric locking device for releasing the lock, and a control device for allowing the electric locking device to be energized when the press roller is in a position separated from the cylindrical plate cylinder. Safety device for stencil printing equipment.