JP3441027B2 - Ink absorption device for stencil type stencil printing machine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink absorbing device for a stencil type plate making and printing apparatus.

[0002]

2. Description of the Related Art As an ink absorbing device of a conventional stencil-type plate-making printing device, there is an application by the applicant of the present invention (Japanese Patent Application No. 331774).

As shown in FIG. 17, this ink absorbing device abuts on both ends of a portion of the shaft 9 of the plate discharge roll 10 on which the used master 1b is wound, and absorbs the ink attached to the used master 1b. A pair of ink absorbing flanges 110, 110 (only one is shown in the figure) serving as absorbing means are provided, and the ink absorbing flange 110 is provided.
Is a doughnut-shaped fiber and has a fiber-based absorbent material having a direction in which the fibers are overlapped with each other.
It is made of a paper pulp compression molding material formed so that the direction of the axis 0 of 0 is substantially parallel. The outer diameter of the ink absorption flange 110 is formed to be equal to the outer diameter of the plate discharge roll 10 when the plate discharge roll 10 is full of the used master 1b, and both ends of the used master 1b wound around the shaft 9 are covered. It always comes into contact with.

[0004]

In the conventional ink absorbing device, the fiber-based absorbent material having the directionality in the overlapping of the fibers is provided on both sides of the used master 1b wound around the outer circumference of the plate discharge roll 10. Since the length of the fiber and the direction of the shaft 9 of the plate discharge roll 10 are made substantially parallel to each other, the ink is absorbed by the donut-shaped ink absorption flange 110 made of a paper pulp compression molding material. Used master 1b
The ink that has adhered to the plate and oozes onto the shaft 9 of the plate discharge roll 10 is gradually absorbed and cannot be absorbed quickly, and the leaked ink drips or scatters, and the ink stains the printing device. There is a problem.

[0005]

According to a first aspect of the present invention, a master for a stencil is wound around an outer peripheral surface of the printing drum to rotate around a rotation center axis, and ink is supplied to the inner peripheral surface of the printing drum. An ink supply device, a plate feed roll having one end of the master wound around to feed the master to the printing drum, plate making means for making the master, and the other end of the master wrapped around the used master to produce the printing drum. In a stencil-type plate-making printing apparatus, comprising: a plate discharge roll wound up from the plate, the plate supply roll, and a plate supporting roll that supports the plate discharge roll and is rotatable with respect to the central axis of the printing drum. On the outer periphery of the plate discharge roll, in the vicinity of the side edge of the used master, a minute gap that causes a capillary phenomenon for guiding the ink is formed parallel to the axis of the plate discharge roll. In the ink absorber of the stencil type plate-making printing machine, characterized in that a Nki absorbing means.

According to a second aspect of the present invention, in the ink absorbing device of the stencil type plate making and printing apparatus according to the first aspect, the ink absorbing means comprises a sheet-shaped base material and an ink absorbing member for absorbing ink. The ink absorbing device of the stencil-type plate-making printing device is characterized in that the ink absorbing device is wound around the outside of the plate.

According to a third aspect of the present invention, in the ink absorbing device of the stencil type plate making and printing apparatus according to the second aspect, a plurality of the ink absorbing members are connected to an overlapping portion of the sheet-shaped substrate with the ink absorbing member. In the ink absorbing device of the stencil-type plate-making printing device, characterized in that the holes are formed.

The invention of claim 4 is the invention of claim 1, 2 or 3.
In the ink absorbing device of the stencil-type plate-making printing device described,
The ink absorbing device of a stencil-type plate making printing apparatus is characterized in that the ink absorbing means is subjected to a lipophilic treatment.

According to a fifth aspect of the present invention, in the ink absorbing device of the stencil printing machine according to the first, second, third or fourth aspect, the ink absorbing means comprises: It is an ink absorbing device of a stencil plate making and printing apparatus characterized in that it is controlled so as to be located under the printing drum.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. First, a plate-making printing machine to which the present invention is applied will be described with reference to FIGS. 7 to 14. 7 to 14, reference numeral 350 indicates a stencil-type plate-making printing apparatus. Reference numeral 351 denotes a frame arranged at a predetermined position of the stencil plate making and printing apparatus 350. This stencil-type plate-making / printing apparatus 350 has a printing drum 5 supported by a frame 351 and having a master 1 for stencil wound around its outer peripheral surface and rotating around a rotation center axis 6, and an ink on the inner peripheral surface of the printing drum 5. For supplying the ink and the core tube 2 of the plate feed roll 2 in which one end of the master 1 is wound around the core tube 2s as the plate feed roll axis and the master 1 is supplied to the printing drum 5.
plate feeding roll shaft supporting means 175 supporting s, and the master 1
And a rotation center of the plate discharge roll shaft support means 185 for supporting the winding shaft 9 of the plate discharge roll 10 for winding the used master 1b from the printing drum 5 by winding the other end of the plate around the winding shaft 9 as the plate discharge roll shaft. A plate feeding / discharging unit 19 which is rotatable around the shaft 6 with respect to the printing drum 5 and has plate feeding roll shaft supporting means 175 and plate discharging roll shaft supporting means 185.
0, a thermal head 4 supported on the main body side of the stencil plate making printing apparatus 350 (hereinafter, simply referred to as “printing apparatus main body side”) as a plate making means for making the master 1, and a plate feeding roll shaft supporting means 175. A platen roller 3 which is arranged in the vicinity of the platen 3 to convey the master 1 in the master conveying direction while pressing the master 1 against the thermal head 4 during plate making, and a winding opening 69 for winding the used master 1b on the plate discharge roll 10.
Except for the winding opening 69, it mainly comprises a plate discharge roll cover 65 for sealing the plate discharge roll 10.

The plate supply / discharge unit 190 includes a plate supply roll shaft support means 175, a plate supply roll 2, a platen roller 3, a plate discharge roll shaft support means 185, a plate discharge roll 10, a plate discharge roll cover 65, and a plate supply / discharge plate pair 91a, 91b ( (One is not shown), but is mainly composed of the plate discharge roll gear 51. The printing drum 5 and drum shafts 93a, 9 to be described later
3b (one is not shown), the plate feeding / discharging unit 190, the ink supply unit 60, and the like constitute a drum unit 220, and the drum unit 220 is detachable from the printing apparatus main body side through a frame 351 by a detaching mechanism (not shown). (See FIG. 8).

The structure around the printing drum 5, the ink supply means 60, each component of the plate supply / discharge unit 190, the structure around the thermal head 4 and the like will be described below. In FIG. 8, the printing drum 5 is provided so as to extend in the direction of the central axis 6 of rotation, and has a large number of fine holes 5 that allow ink to pass therethrough.
Resin or metal support cylinder 5a in which h is formed
And a mesh screen 5b having a plurality of layers wound around the outer peripheral surface of the mesh screen has a two-layer structure. Support cylinder 5a
Has an opening 5 over a range of approximately two-thirds on its circumference.
A printable area Pa in which h is formed and an ink impermeable non-printing area H in which the opening portion 5h is not formed are formed. In the printable area Pa of the printing drum 5, an opening portion 5h is formed in a range corresponding to a convex portion of the impression cylinder 115, which will be described later, in a range narrower than the width of the master 1, and other portions are non-opening areas. It is a division. The non-printing area H of the printing drum 5 is also provided on both side edge portions as shown in FIG. The thickness of the mesh screen 5b is
Although it is about 0.1 mm, this is exaggerated in the figure.

In FIGS. 7 to 9, both side ends of the support cylinder 5a and the mesh screen 5b are disc-shaped drum flange portions 12 arranged with the both side ends sandwiched therebetween.
It is attached to the outer peripheral portions of a and 12b (one is not shown). Drum shafts 93a and 93b are provided at the central bases of the drum flanges 12a and 12b (one of which is not shown).
(One is not shown) are integrally formed, and the printing drum 5 is rotatably supported by the rotation center shaft 6 via a bearing 14. The printing drum 5 is rotationally driven in the direction of arrow A shown in FIG.

On both drum shafts 93a and 93b (one of which is not shown), a pair of plate feeding / discharging arms 91a and 91b (one of which is not shown) serving as roll supporting means with the printing drum 5 sandwiched therebetween (hereinafter, referred to as " (A pair of plate feeding / discharging arms 91a, 91b ") is rotatably supported with respect to the rotation center shaft 6 via a bearing (not shown). The bases of the plate feeding / discharging arms 91a, 91b are connected to drum shafts 93a, 93b (one of which is not shown) via a plate feeding / discharging friction clutch 92. The plate feeding / discharging friction clutch 92 is configured such that at the time of printing, the plate feeding / discharging arms 91a, 91b and the drum shaft 93a,
93b is connected and rotated integrally. On the other hand, at the time of plate making and plate discharging, plate feeding / discharging arms 91a, 91b and drum shaft 93
a and 93b (one of which is not shown) are set so as to be disconnected. Friction clutch for plate feeding / discharging 92
Is designed to be manually removed for manual handling when jamming.

As shown in FIG. 8, the drum gear 17 is integrally formed on one end side of the drum shaft 93b. A drive motor M fixed to a side plate (not shown) on the printer body side and connected to one end of a drum drive shaft 18 is disposed outside the drum gear 17. At the other end of the drum drive shaft 18,
A drive gear 19 having a tooth portion that meshes with the drum gear 17 when the drum unit 220 is mounted is fixed. As described above, the drum driving means 230 includes the driving motor M,
It is composed of a drum drive shaft 18 and a drive gear 19. The drum driving means 230 is shown only in FIG.

As shown in FIG. 9, the drum drive shaft 18 includes
A rotary plate 228 having a convex portion 228a formed on a part of its circumference is fixed around the shaft 18, and a sensor 36 is provided above the rotary plate 228 and a sensor 37 is provided below the rotary plate 228.
When the shaft 18 is rotated and the plate feeding / discharging unit 190 is located above the printing drum 5, the sensor 36 is provided with the convex portion 228a of the rotary plate 228 from the light emitting element of the sensor 36 to the light receiving element. The light to the plate feeding / discharging unit 190 is detected to be located above the printing drum 5. In the sensor 37, when the shaft 18 rotates and the plate feeding / discharging unit 190 is located under the printing drum 5, the convex portion 228a of the rotating plate 228 blocks light from the light emitting element to the light receiving element of the sensor 37. It is detected that the plate feeding / discharging unit 190 is located below the printing drum 5.

As shown in FIGS. 7 to 9, on the base side of each of the plate feeding / discharging arms 91a, 91b (one is not shown),
The rotation center shaft 6 with respect to each of the plate feeding / discharging arms 91a and 91b (one is not shown) in the home position (hereinafter, sometimes referred to as “fixed position” or “plate feeding position”) state shown in FIGS. 7 and 10. Balancer weights 90a and 90b (one of which is not shown) made of a material of critical importance are fixedly installed at symmetrical positions via the. The balancer weights 90a and 90b are arranged so as not to interfere with other parts when the plate feeding / discharging arms 91a and 91b (one of which is not shown) rotate. The balancer weights 90a and 90b are substantially fan-shaped in a side view, and their sizes and weights are set so as to balance with the rotational moment component of the plate supply / discharge unit 190 with respect to the rotation center axis 6. In the printing process, the printing drum 5 and the plate feeding / discharging unit 190 integrally rotate at high speed. At this time, since the balancer weights 90a and 90b are provided as described above, the integrated body as a whole has a better rotation balance and a smaller load variation during rotation, which is more stable. High-speed printing is possible.

Between the free ends of the plate feeding / discharging arms 91a and 91b, connecting members (not shown) for connecting both arms to maintain rigidity are bridged so as not to interfere with other parts. .

The drum drive shaft 18 is rotated by the drive of the motor M, and the plate feeding / discharging arms 91a, 91b are rotated by the rotation center shaft 6.
On the other hand, when it is located above the printing drum 5, the rotary plate 228 rotates, the convex portion 228a operates the sensor 36, and it is detected that the plate feeding / discharging arms 91a and 91b are located above the printing drum 5. You can send a signal to. Further, when the drum drive shaft 18 is driven by the motor M to rotate and the plate feeding / discharging arms 91 a and 91 b are located below the printing drum 5 with respect to the rotation center shaft 6,
The rotary plate 228 rotates, the convex portion 228a operates the sensor 37, and a signal for detecting that the plate feeding / discharging arms 91a, 91b are positioned below the printing drum 5 can be issued.

In FIG. 7, an ink supply means 60 is provided inside the printing drum 5, and an ink roller 20 for supplying ink to the inner peripheral surface of the printing drum 5, that is, the inner peripheral surface of the support cylinder 5a, and the ink roller 20. The doctor roller 22 is arranged in parallel with the roller 20 with a minute gap and forms an ink reservoir 21 between the roller 20 and the ink roller 20, and also serves as the rotation center shaft 6 of the printing drum 5 and supplies ink to the ink reservoir 21. The ink supply pipe 6 is mainly used.

The shaft of the ink roller 20 is rotatably supported by a side plate (not shown) in the printing drum 5 fixed to the rotation center shaft 6, and printing is performed by drive transmission means such as gears and belts (not shown). It is driven to rotate in the same direction as the rotation direction of the printing drum 5 in synchronization with the rotation of the drum 5. An elastic body made of oil-resistant nitrile rubber, fluororubber, resin, or the like is formed on the surface of the ink roller 20 to reduce the impact noise when the pressing means, which will be described later, comes into contact.

The printing drum 5 facing the ink roller 20
A pressure drum 115 as a pressing means is provided below the outer peripheral surface of the rotator so as to be rotatable around the eccentric shaft 117 in the direction of arrow B in the figure. The eccentric shaft 117 is supported by a main body side plate (not shown) on the printing apparatus main body side, and is connected to an impression cylinder driving device provided on the printing apparatus main body side. The impression cylinder 115 selectively occupies a printing position where the printing drum 5 is pressed against the printing drum 5 via the printing paper P during printing and a non-printing position separated from the outer peripheral surface of the printing drum 5 during non-printing. Impression cylinder 1
The outer peripheral surface of 15 is pressed against the master 1 wound around the outer peripheral surface of the printing drum 5 via the printing paper P, and the printing drum 5 is attached to a part of the outer peripheral portion of the impression cylinder 115.
Plate feeding / discharging unit 1 protruding in the centrifugal direction from the outer periphery of
Notch recess 118 for avoiding interference with the protruding portion of 90
Are formed. The impression cylinder 115 includes the plate feeding / discharging unit 19
The sheet feeding device and the plate feeding / discharging unit 190 are synchronized with each other in operation timing so that the above-mentioned protruding portion of 0 and the notch recess 118 are aligned, that is, they rotate at substantially the same peripheral speed as the printing drum 5 in synchronization with each other. It is designed to be driven. A part of the cutout recess 118 of the impression cylinder 115 is provided with an openable claw finger 116 for holding the front end of the printing paper P parallel to the axis of the impression cylinder. Kuwae claw 116
It is opened and closed at a predetermined position by an opening / closing means that has a cam or the like (not shown) and forcibly opens and closes the mullet claw 116.

In the vicinity of the right side of the impression cylinder 115 in the drawing, a print sheet P separated and fed from an upstream side by a sheet conveying unit (not shown) from a sheet feeding unit (not shown) is provided between the printing drum 5 and the impression cylinder 115. Further, a pair of upper and lower registration roller pairs 24a and 24b for carrying at a predetermined timing are provided. The pair of registration rollers 24a and 24b are rotatably supported by a main body side plate (not shown) on the main body of the printing apparatus. Printing drum 5 and registration roller pair 24a, 24
The registration roller pair 2
A paper detection sensor 110 for detecting the feeding of the print paper P from the sheets 4a and 24b is provided.

In the vicinity of the left side of the impression cylinder 115 in the figure, a paper ejection claw 114 for separating the printed printing paper P in the vicinity of the impression cylinder 115 and a transport roller front 111 rotatably supported by the main body side plate. And a conveyance belt 113 attached between the conveyance roller rear portion 112 and the conveyance roller rear 112, a suction conveyance device including a suction fan (not shown), the printing drum 5 and the impression cylinder 115.
An air blowing / separating fan 137 is provided that blows air to the nip portion between and to separate the paper P from the surface of the printing drum 5. The conveying belt 113 is set to be driven by a driving unit (not shown) at a conveying speed higher than the peripheral speed of the printing drum 5.

In FIG. 7, the master 1 is a very thin 3
consisting essentially of a thermoplastic resin film of μm thickness,
The small diameter core tube 2s of the plate supply roll 2 is wound in a continuous sheet shape. An antistatic agent is applied to the contact surface of the master 1 with the thermal head 4. Here, the master consisting essentially of a thermoplastic resin film, in addition to those in which the master consists of only a thermoplastic resin film, those containing a trace amount of components such as an antistatic agent in the thermoplastic resin film, further, The thermoplastic resin film includes one or more thin film layers such as an overcoat layer formed on both main surfaces, that is, at least one of the front surface and the back surface.
The plate feed roll shaft support means 175 is composed of the attachment / detachment groove 7h and the brake unit 26.

In FIG. 10, the plate feeding / discharging arms 91a, 9
1b (one is not shown), in the approximate center of the free end,
U-shaped attaching / detaching grooves 7h for attaching / detaching the plate feed roll 2 are formed respectively. A brake unit 26 that applies a predetermined braking force to the core tube 2s at each end of the plate feed roll 2 is provided in each attachment / detachment groove 7h, and the plate feed roll 2 passes through the core tubes 2s at both ends. Both brake units 26
Is rotatably and detachably supported by the plate feeding / discharging arms 91a and 91b (one of which is not shown).
It is supported so as not to come off from the brake unit 26 due to its inertia when rotating. Therefore, a predetermined braking force is always applied to the core tubes 2s at both ends of the plate feed roll 2, and the master 1 pulled out from the plate feed roll 2
A constant tension is always applied to.

The master 1 supplied from the plate supply roll 2 is provided on a part of the peripheral surface of the plate supply / discharge arms 91a and 91b (one of which is not shown) on the right side in the drawing near the plate supply roll 2 support portion. Platen roller 3 that winds and conveys
However, the plate feeding / discharging arms 91a and 91b (one is not shown)
It is attached to a shaft 3s that is rotatably supported by the shaft.
The platen roller 3 is provided with a gap between the platen roller 3 and the outer peripheral surface of the printing drum 5, and plate feeding and discharging arms 91a and 91b (one of which is not shown).
Supported by. The platen roller 3 has JIS hardness A.
Made of 40 ° synthetic rubber anti-static material,
It is provided so as to extend in the axial direction in parallel with the rotation center axis 6.

In FIG. 11, reference numeral 210 indicates a platen roller driving means. Platen roller driving means 210
Is mainly composed of a DC motor (not shown), a plate cam 32, a cam follower bracket 33, a tension coil spring 34, a pulse motor 28 and a gear 31. As shown in FIG. 11, the gear 30 is attached to one end of the shaft 3s of the platen roller 3.
Is fixed. The main body side plate includes a rotary drive shaft 32.
A DC motor (not shown) connected to s is provided, and the plate cam 32 is attached to the rotary drive shaft 32s. In the vicinity of the cam 32 on the printing apparatus main body side, the roller 3 that comes into contact with the contour peripheral surface of the cam 32 and rolls.
A cam follower bracket 33 with 3a is arranged.

The cam follower bracket 33 has a shape in which arms are projected on a triangular plate, one end of the triangular portion forms a mounting portion of the roller 33a, and the base end thereof is the shaft 3.
It is pivotally attached to the body side plate in 3s. The protruding arm-shaped free end of the cam follower bracket 33 is given a turning tendency in the counterclockwise direction in the figure by the tension coil spring 34 locked to the body side plate. Further, a pulse motor 28 having a gear 31 that meshes with a gear 30 fixedly mounted on the rotary drive shaft 31s at a predetermined time is attached to one end of the protruding arm of the cam follower bracket 33.

In FIGS. 7 and 10, reference numeral 50 denotes the thermal head 4 on the platen roller 3 and the master 1 at the time of plate making.
Plate making position (shown by phantom line in the figure) to be contacted via
The thermal head contacting / separating means for selectively displacing from a plate making position (shown by a solid line in the drawing) to be separated from the plate making position during plate making is shown. The thermal head contacting / separating means 50 is mainly composed of a DC motor (not shown), a cam 47, a cam follower arm 48, a tension coil spring 49, and a thermal head 4, which will be described later.

A plate cam 47 is integrally attached to the side plate of the main body and is connected to a drive shaft 47s which is not shown in the drawing.
The C motor is fixed. Further, in the vicinity of the cam 47, the main body side plate is pivotally attached by a shaft 48s, and
A cam follower arm 48 with a roller 48a that rolls in contact with the outer peripheral surface of the contour 7 is provided. A mounting portion for the roller 48a is formed at a base end of the cam follower arm 48, and a thermal head 4 provided so as to extend in a direction parallel to the axis 3s of the platen roller 3 is mounted at a free end thereof. . Further, between the mounting portion of the roller 48a of the cam follower arm 48 and the shaft 48s, the other end of the tension coil spring 49 whose one end is locked to the main body side plate is locked. The tension coil spring 49 gives the thermal head 4 a turning tendency in the clockwise direction in the drawing. The thermal head 4 has a well-known configuration in which a large number of fine heating elements are arranged in a line in a direction orthogonal to the sub-scanning transport direction of the master 1, that is, in the main scanning direction.

As shown in FIGS. 7 and 10 to 14,
The winding shaft 9 has a round bar shape and is made of polyamide (PA).
Made of resin. The plate discharge roll 10 is a used master 1b.
Is wound in a roll circle, and the other end of the master 1 fed from the plate supply roll 2 is previously bonded to the winding shaft 9. The one end of the winding shaft 9 has a cutout groove 9
a (see FIG. 13) is formed. As shown in FIG. 14, at both ends of the winding shaft 9, seal members 72h for preventing leakage of ink oozing from the plate discharge roll 10 are rotatably provided in advance when set on the plate discharge roll cover 65. It is installed. The seal member 72h is made of an oil resistant rubber such as fluororubber or high nitrile rubber, and has a whole ring shape.

As shown in FIGS. 10, 12 and 13, the lower cover 67 of the plate discharge roll cover 65 is detachably attached between the free ends of the plate supply / discharge plate pairs 91a and 91b, and both arms are detached. Mounting plates 68a and 68b for maintaining the rigidity of 91a and 91b are bridged and fixed.

In FIG. 13, reference numeral 185 indicates a plate discharge roll shaft support means. The plate discharge roll shaft support means 185 mainly includes a roll drive shaft 52 and a slide shaft 53, which will be described later.

At the free end of the plate feeding / discharging arm 91a, a cutout groove 9 of the winding shaft 9 of the plate discharging roll 10 is formed of a pipe material.
for supporting one end of the plate discharge roll 10 by fitting with a,
A roll drive shaft 52 having an engaging projection 52a protruding in a direction perpendicular to the axis is rotatably provided. A plate discharge roll gear 51 is fixed to the shaft end of the roll drive shaft 52. On the other hand, a free end portion of the plate feeding / discharging arm 91b is formed of a pipe-shaped member having a bottomed portion, and the winding shaft 9 of the plate discharging roll 10 is loosely fitted to support the other end of the plate discharging roll 10. A slide shaft 53 that is slidable in the LR direction in the drawing is provided in parallel with the shaft 3s of the platen roller 3.

Further, the roll drive shaft 52 and the slide shaft 5
At the free ends of the plate feeding / discharging arms 91a and 91b in the vicinity of 3,
An unillustrated brake unit is provided to prevent the roll drive shaft 52 and the slide shaft 53 from loosening in a direction opposite to the winding direction, and the initial setting winding of the master 1 on the outer peripheral surface of the printing drum 5 will be described later. Sometimes a braking force is applied that does not loosen.

In FIG. 12, reference numeral 55 indicates a plate discharge roll driving means for rotationally driving the winding shaft 9 of the plate discharge roll 10. The plate discharge roll driving means 55 includes a plate discharge winding motor 56, a drive gear 58, a connecting arm 59, and a gear 61, which will be described later.
It is mainly composed of. A plate discharge winding motor 56 is fixed to the main body side plate. A drive gear 58 is fixed to the rotation output shaft 57 of the plate discharge winding motor 56. Drive gear 5
Next to 8 is a gear 61 which is rotatably supported around a shaft 61s by a connecting arm 59 and is rotatably supported around a shaft 61s and which is constantly meshed with a drive gear 58. A clutch (not shown) allows rotation only in the direction of arrow B in the figure.

The oscillating motion of the connecting arm 59 for engaging or releasing the mesh between the plate discharging roll gear 51 and the gear 61 at a predetermined operation timing described later is performed by the rotation output shaft 57,
The positional relationship between the shaft 61s and the roll driving shaft 52 is such that the half line connecting the rotation output shaft 57 and the shaft 61s and the roll driving shaft 5
Since the half line connecting the shaft 2 and the shaft 61s is set to be a right angle or an obtuse angle larger than the right angle, it can be performed only by the rotation operation of the drive gear 58 by the rotation driving of the plate discharge winding motor 56. Has been done. That is, at the start of plate making, which will be described later, when the drive gear 58 of the plate discharge winding motor 56 rotates in the direction of arrow A in the figure, the gear 61 is transmitted via the connecting arm 59 under the action of the rotation moment of the gear.
However, it swings in a direction approaching the plate discharge roll gear 51 and meshes with the plate discharge roll gear 51, and the rotational force of the plate discharge winding motor 56 is transmitted to the roll drive shaft 52. On the other hand, at the end of plate making, the driving gear 58 of the plate discharge winding motor 56 is slightly reversely rotated in the direction opposite to the direction of the arrow A in the drawing, so that the gear 61 is stopped through the connecting arm 59 while the plate 61 is discharged. It swings away from the roll gear 51 and disengages from the plate discharge roll gear 51.

In FIG. 14, reference numeral 79 indicates a cassette holder. The cassette holder 79 is an unused plate supply roll 2
It is used when U or the plate supply roll 2 and the unused plate discharge roll 10U or the plate discharge roll 10 previously mounted on the plate discharge roll cover 65 are supplied and exchanged as a set, or when the jam is removed. . The cassette holder 79 has a double-ended wrench shape and is integrally formed of synthetic resin or the like. At one end of the cassette holder 79, an attachment / detachment notch 79b for detachably mounting an unused plate feed roll 2U or each end of the core tube 2s of the plate feed roll 2
However, at the other end of the cassette holder 79, a detachment notch 79c for detachably mounting the unused plate discharge roll 10U or each end of the winding shaft 9 of the plate discharge roll 10 is formed. In the cassette holder 79, the central portions of both members are connected by a connecting portion 79a. In the figure,
Reference numeral 95 is an unused plate feeding roll 2U or plate feeding roll 2
2 shows a roll set product in which the unused plate discharge roll 10U or the plate discharge roll 10 previously mounted on the plate discharge roll cover 65 is integrally and detachably connected by a cassette holder 79.

The stencil type plate making / printing apparatus 350 has been described above. An ink absorbing device provided on the plate discharge roll 10 of the stencil type plate making / making apparatus 350 will be described with reference to FIGS. 1 to 6.

In FIG. 1, the winding shaft 9 of the plate discharge roll 10
At both ends 901 and 902 (only one is shown and the other is omitted) of the ink absorbing means 1001 and 1002.
(Only one is shown and the other is omitted.). The ink absorbing means 1001 has a take-up shaft 9 at the center.
Is formed of a donut-shaped ink absorbing member 1001A in which holes 1001a in which are fitted are formed, and a plurality of folds are concentrically formed in the circumferential direction on the end surface side of the ink absorbing member 1001A on the used master 1b side. 1001b is each fold 100
Gap β between 1b (gap of about 0.05 to 0.3 mm)
It is provided so as to project in the opened state. As the ink absorbing member 1001A, an ink absorbing member such as foam sponge, sponge, absorbent paper, and woven fabric is used. A cover 1004 for preventing the ink absorbed by the ink absorbing means 1001 from splashing outside is provided outside the ink absorbing means 1001. Cover 1
As 004, the cover 65 that covers the winding shaft 9 may be extended and the ink absorbing means 1001 may be disposed therein.

The ink adhering to the used master 1b wound on the winding shaft 9 is squeezed out on both sides of the winding shaft 9 while being wound on the winding shaft 9. Is
The ink absorbing member 10 is formed by a capillary phenomenon generated in a gap provided between the folds 1001b of the ink absorbing means 1001.
The ink is guided to the 01A side and quickly absorbed inside the ink absorbing member 1001A.

Another embodiment will be described with reference to FIGS. 2a and 2b. In FIG. 2a, only the ink absorbing means 1001 is shown, and regarding the stencil type plate making and printing apparatus 350 and the winding shaft 9,
The configuration is omitted because it is the same as the above-mentioned embodiment. In FIG. 2a, the ink absorbing means 1001 is composed of a donut-shaped ink absorbing member 2001 having a hole 2001a in which a take-up shaft 9 is fitted in a central portion thereof, and the end surface side of the used master 1b side thereof. As shown in FIG. 2b, the plurality of circular fine holes 2 are partially parallel to the axial direction of the winding shaft 9.
001b is bored. As the ink absorbing member 2001, a member having an ink absorbing property such as foam sponge, sponge, absorbent paper, and woven fabric is used.

The ink adhered to the used master 1b wound on the winding shaft 9 is absorbed by the ink absorbing member 20 due to the capillary action of the circular fine holes 2001b of the ink absorbing means 1001.
The ink is guided to the 01 side and is quickly absorbed inside the ink absorbing member 2001.

In the case of this embodiment, the shape of the fine holes 2001b is not limited to the circular shape, but may be a triangular shape, a quadrangular shape, a polygonal shape, or a honeycomb shape.

Another embodiment will be described with reference to FIG. In FIG. 3, only the ink absorbing means 1001 is shown, and the stencil-type plate-making printing apparatus 350 and the winding shaft 9 are the same as those in the above-mentioned embodiment, and therefore their configurations are omitted.

In FIG. 3, ink absorbing means 1001
Is an ink absorbing member 3001 and an ink absorbing member 3001.
The wider sheet 4001 and the wider sheet 4001 are concentrically and alternately wound in a state where one ends are aligned on both outer sides of the winding shaft 9 (see FIG. 1). On the side of the used master 1b (see FIG. 1) of the ink absorbing means 1001, there is a gap β between the sheets 4001 and 4001.
(Appropriate clearance is 0.05 to 0.3 mm.)
Is formed. The sheet 4001 is made of a material such as vinyl chloride, polyethylene terephthalate, or polyethylene, and the ink absorbing member 3001 is made of foam sponge, sponge, absorbent paper, woven fabric, or the like.

The ink adhering to the used master 1b wound on the winding shaft 9 is squeezed out on both sides of the winding shaft 9 while being wound on the winding shaft 9. Is
Sheet 4001 of ink absorbing means 1001 and sheet 4
The ink absorption member 3001 is guided to the ink absorption member 3001 by the capillary phenomenon generated in the gap β between the ink absorption member 300 and
Quickly absorbed inside 1.

In this embodiment, as shown in FIG. 4, the sheet 4001 may have a plurality of holes 4002 formed in the portion B overlapping the ink absorbing member 3001.

As described above, when the sheet 4001 having the plurality of holes 4002 formed in the portion overlapping the ink absorbing member 3001 is wound, the ink absorbing member 300
A plurality of holes 40 are formed while one is connected to the other.
By providing No. 02, an ink containing space is provided inside the ink absorbing means 1001, and the ink can be absorbed while being spread in all directions, and a larger amount of ink can be absorbed in a short time. be able to.

Another embodiment will be described with reference to FIG. In FIG. 5, only the ink absorbing means 1001 is shown, and the stencil-type plate-making and printing apparatus 350 and the winding shaft 9 are the same as those in the above-mentioned embodiment, and therefore the construction thereof is omitted. In FIG. 5, the ink absorbing means 1001 is provided on the outside of the take-up shaft 9,
The sheet 5001 and an ink absorbing member 6001 narrower than the sheet 5001 are formed by spirally winding the ink absorbing member 6001 inside with the one end aligned outside the winding shaft 9. . Ink absorbing means 100
A gap β is formed between the sheets 5001 and 5001 on the side of the used master 1b of No. 1 (the gap is 0.0
About 5 to 0.3 mm is suitable. ). Sheet 5001
A material such as vinyl chloride, polyethylene terephthalate, or polyethylene is used for the ink absorbing member 6001, and foam sponge, sponge, absorbent paper, woven fabric, or the like is used for the ink absorbing member 6001.

The ink attached to the used master 1b wound on the take-up shaft 9 is squeezed to both sides of the take-up shaft 9 while being wound on the take-up shaft 9. Is
Sheet 5001 of ink absorbing means 1001 and sheet 5
The ink absorption member 6001 is guided to the ink absorption member 6001 side by the capillary phenomenon generated in the gap β with the ink absorption member 600.
Quickly absorbed inside 1.

In this embodiment, as shown in FIG. 6, the sheet 5001 may have a plurality of holes 6002 formed in the portion A overlapping the ink absorbing member 6001. When the sheet 5001 having the plurality of holes 6002 formed in the portion A overlapping the ink absorbing member 6001 is spirally wound, the ink absorbing means 1001 connects the ink absorbing members 6001 to each other. In addition to the above state, an ink containing space is provided inside, so that the ink can be absorbed in a scattered state in all directions, and a larger amount of ink can be absorbed in a short time.

Further, the ink absorbing members 1001A, 200 of the ink absorbing means 1001 in the above respective embodiments.
1, 3001 and 6001 and sheets 4001 and 5001 are subjected to lipophilic treatment having lipophilicity with respect to ink. Dimethylchlorosilane or the like is used as the lipophilic treatment member.

When the ink absorbing members 1001A, 2001, 3001 and 6001 of the ink absorbing means 1001 and the sheets 4001 and 5001 are subjected to lipophilic treatment, the ink absorbing means 1001 easily becomes compatible with the ink and absorbs the ink more quickly. The ink absorption time can be shortened.

Here, first of all, the operation of the stencil plate making and printing apparatus 350 will be described with reference to FIGS. 7 to 15. As shown in FIG. 7, the winding shaft 9 of the unused plate discharging roll 10 is set on the plate discharging roll shaft supporting means 185. Next, the unused plate feeding roll 2U is wound around the outer peripheral surface of the printing drum 5, the leading end of the master 1 is passed over the outer peripheral surface of the platen roller 3, and the unused plate feeding roll 2U is supplied to the plate feeding roll shaft support means 175. Set to. After this, the drum unit 22
0 is mounted on the printing apparatus main body side via the frame 351 and the detaching mechanism. Then, the plate feeding / discharging arms 91a, 91
b (one is not shown) is a friction clutch 92 for plate feeding / discharging.
Activating (shown in FIG. 8) results in a connection in place to the print drum 5.

Next, in FIG. 7, plate making and plate ejection are performed at the same time. When a document (both not shown) is set in the document reading unit of the document reading device and a plate making start key (not shown) is turned on, a start signal is transmitted, whereby the image information of the document is read by the document reading device. At this time, the driving motor M of the drum driving means 230
Is driven, and the convex portion 228a of the rotary plate 228 causes the sensor 3
The drum drive shaft 18 is rotated to the position detected by 6,
The printing drum 5 and the plate feeding / discharging unit 190 are stopped near the home position (plate feeding position) in FIG. At this time, the plate feeding / discharging arms 91a and 91b (one is not shown)
Is in a state of occupying the plate feeding position by disconnecting its connection to the printing drum 5 by the operation of the plate feeding / discharging friction clutch 92 (shown in FIG. 8).

In parallel with this, as shown in FIG. 10, the thermal head 4 is displaced by the operation of the thermal head contacting / separating means 50 to a plate making position where it abuts against the platen roller 3 via the master 1, and a DC motor not shown. When the cam 47 is rotated by the rotation of the cam 47, the engagement between the large diameter portion of the cam 47 and the roller 48a is released, and the cam follower arm 48 is rotated in the direction of the arrow D by the urging force of the tension coil spring 49. The heating element 4 is pressed against the platen roller 3 via the master 1.

On the other hand, at the same time as the above operation, the plate making process is performed as shown in FIG.
As shown in FIG. 5, the operation is performed with the operation of the platen roller driving means 210. That is, the cam 32 is rotated in the direction of arrow A in the figure by the rotational drive of the DC motor (not shown), so that the cam follower bracket 33 is rotated by the shaft 33s.
When the gear 31 is meshed with the gear 30, the motor 28 is driven to rotate, the gear 30 and the platen roller 3 are rotated in the direction of arrow A in the figure, and the master 1 is fed. The plate roll 2 is sequentially drawn and conveyed.

At the same time, the image information read from the document reading device from a position corresponding to the opening end position F of the printing drum 5 is converted into an electric signal by a CCD (photoelectric conversion element) or the like, and A / D (analog / analog / In response to these signals, the heating elements of the heating element of the thermal head 4 are energized in a pulsed manner via a (digital) converter, a plate-making control device, etc. (both not shown), and the heating elements of the thermal head 4 are heated. Is operated in the main scanning direction to selectively generate heat, and while the master 1 is conveyed in the sub scanning direction, the master 1 is sequentially heated and perforated from the leading end of the master 1 to perform plate making.

At the same time as this plate making operation, the drum driving means 2
With the driving force supplied from the driving motor M of 30, only the printing drum 5 is rotated in the direction of the arrow A in the drawing at a speed synchronized with the peripheral speed of the platen roller 3, so that the plate-making master 1a has an outer peripheral surface of the printing drum 5. Is wrapped around. The peripheral speed of the printing drum 5 is set to be slightly higher than the peripheral speed of the platen roller 3 in order to apply proper tension to the plate-making master 1a supplied from the platen roller 3 and wind it around the printing drum 5. There is.

In parallel with the plate making operation, as shown in FIG. 12, the plate discharge roll driving means 55 is operated to
The plate discharge roll gear 51 and the gear 61 are meshed by the above-described operation. In this state, when the plate discharge winding motor 56 is rotationally driven, the winding shaft 9 is rotated in the direction of arrow A via the roll drive shaft 52, and the used master 1b is rolled around the winding shaft 9. Will be wound up.

The position corresponding to the opening rear end position E point (plate making end position) of the printing drum 5 is judged by the number of steps of the pulse motor 28, and the plate making is completed. When the print drum rotation detection sensor (not shown) determines that the initial position return (one rotation) of the print drum 5 is completed, as shown in FIG. 7, the thermal head 4 operates the thermal head contact / separation unit 50. Thus, the platen roller 3 is separated from the platen roller 3 via the master 1 in the direction of the arrow U to occupy the non-platemaking position.

At the same time, in FIG. 11, the platen roller driving means 210 operates. First, the rotation of the pulse motor 28 is stopped. Then, the rotation of the DC motor causes the cam 32 to rotate further in the direction of arrow A in the figure, so that the engagement between the large diameter portion and the roller 33a is released, and the cam follower bracket is urged by the urging force of the tension coil spring 34. 33 is rotated clockwise about the shaft 33s. As a result, the meshing state between the drive gear 31 and the gear 30 is released, and the drive gear 31 occupies a position where it does not interfere with the above-mentioned protruding portion of the plate feeding / discharging unit 190.

On the other hand, at the same time as each of the above operations, the plate discharge roll driving means 55 is operated. That is, the plate discharge winding motor 56
Is stopped, the rotation of the plate discharge roll 10 is stopped, and then the gear 61 is separated from the plate discharge roll gear 51 by the above-described operation. Then, the stopped state of the plate feeding / discharging unit 190 is released by the operation of the printing drum rotation control means composed of the rotary plate 228 and the sensors 36, 37, and as shown in the state of FIG.
The printing drum 5 is rotated integrally, that is, the plate feeding / discharging friction clutch 92 of the plate feeding / discharging arm pair 91a, 91b is connected to the printing drum 5.

The printing process starts, and the printing paper P stacked on the paper feed tray (not shown) is paired with registration rollers 24a and 24b (shown in FIG. 1) by a paper conveying means (not shown).
To the registration roller pair 24a, 24
By b, it is inserted between the squeezing claws 116 of the impression cylinder 115 at a predetermined timing synchronized with the rotation of the printing drum 5. In this way, the leading edge of the printing paper P is conveyed between the outer peripheral surface of the printing drum 5 and the convex outer peripheral surface of the impression cylinder 115 while being held by the muller claw 116. At this time, when the paper detection sensor 110 detects the feeding of the printing paper P, the eccentric shaft 117 of the impression cylinder 115 rotates counterclockwise to raise the impression cylinder 115 to occupy the printing position. The printing paper P is continuously pressed by the plate-made master 1a wound around the outer peripheral surface of the printing drum 5 rotating in the direction of arrow A in the figure by the convex outer peripheral surface of the impression cylinder 115, whereby the plate making The finished master 1a comes into close contact with the outer peripheral surface of the printing drum 5, and the ink is transferred from the perforated portion of the plate-making master 1a to the surface of the printing paper P.

At this time, the ink roller 20 (shown in FIG. 7) also rotates in the same direction as the rotation direction of the printing drum 5,
Ink is supplied to the inner peripheral surface of the printing drum 5. In this way, the printed printing paper P is printed at a predetermined position by the nail holder 1
16 is released, peeled off by the paper ejection claw 114, conveyed by the suction conveyance device, and ejected and stacked on a paper ejection stand (not shown). In this way, so-called plate making is performed in which the plate-making master 1a (or master 1) is filled with ink, and the impression cylinder 115 is separated to the non-printing position to return to the initial state, and the printing standby state is set.

Next, by inputting the number of prints with a ten key (not shown) and turning on a print start key (not shown), the above-described printing, feeding and discharging steps are repeated a predetermined number of times to perform printing.

In the stencil plate making and printing apparatus 350, when the above-mentioned all printing steps are completed, the drive motor M is driven and the rotary plate 228 is rotated. The drum drive shaft 18 reaches the position where the convex portion 228a of the rotary plate 228 is detected by the sensor 37.
Is rotated, and the stencil plate making / printing apparatus 350 is in a state in which the plate feeding / discharging unit 190 is located below the printing drum 5, as shown in FIG. When the stencil plate making / printing apparatus 350 is stopped, the plate feeding / discharging unit 190 is stopped in a state of being positioned below the printing drum 5, so that the stencil plate making / making apparatus 350 has a used master wound on the plate discharge roll 10. The ink adhering to 1b does not flow out to the outer periphery of the printing drum 5 after being transmitted through the master 1, and is not scattered to the peripheral portion of the printing drum 5, and the printing apparatus is not polluted.

In this way, while the operations of the plate making / plate feeding, plate discharging and printing processes are repeated, the ink adhered to the used master 1b during plate discharging may change due to the tension or change with time during winding. , The winding shaft 9 of the plate discharge roll 10
It gradually exudes from both ends of the wound portion of the used master 1b wound up on.

Thus, when all the masters 1 of the plate supply roll 2 are used up and all of them are wound up as the used master 1b on the winding shaft 9 of the plate discharge roll 10, the plate discharge roll 10 becomes full with the used master 1b. , The plate discharge roll 10
Together with the plate discharge roll cover 65, the plate supply / discharge arm pair 91
It is removed from the plate discharge roll shaft support means 185 at the free ends of a and 91b. Then, the used plate discharge roll 10 and the plate discharge roll cover 65 are discarded together with the plate discharge roll cover 65 and replaced with new ones. The ink bleeds from both sides of 1b.

In FIG. 7, during plate making and plate ejection, the printing drum 5 is rotated in the direction of arrow A in the figure, and the plate ejection roll 10 moves while the opening rear end position E of the printing drum 5 moves to the opening front end position F. A part of the non-printing plate master to which no ink adheres, which corresponds to the non-printing area H of the non-opening portion of the printing drum 5, is wound up. The ink that has exuded from both sides of the wound master 1b is at both end portions 901 of the plate discharge roll 10.
The ink absorbing means 1001 provided at 902 absorbs the ink quickly, does not scatter around the printing drum 5, and does not pollute the printing apparatus.

Next, an example in which the ink absorbing device of the above embodiment is applied to another stencil type plate making and printing device is shown in FIG.
This will be described with reference to FIG. 16, components having the same configurations and functions as those of the components of the above-described embodiment are designated by the same reference numerals, and the description thereof will be omitted. FIG. 16 is a main part configuration diagram of the stencil-type plate-making printing apparatus showing the above example. First, the main part configuration will be described. In FIG.
Reference numeral 350 'indicates a stencil-type plate-making printing apparatus. Reference numeral 35
Reference numeral 1'denotes a frame arranged at a predetermined position of the stencil plate making and printing apparatus 350 '. This stencil plate making and printing device 350 '
Is for the stencil printing plate making apparatus 350 of the above embodiment,
Instead of the plate feeding / discharging unit 190, the plate feeding unit 170 rotatable about the rotation center axis 6 with respect to the printing drum 5 and having the plate feeding roll shaft support means 175 and printing around the rotation center axis 6 are provided. Drum 5 and plate feeding unit 170
It is rotatable with respect to the plate discharge roll shaft support means 185.
Having a plate discharge unit 180 having an impression cylinder 115
Instead, it is different in that it has a press roller 11 and that it has a plate feeding / discharging arm joining means 40 for joining the plate feeding unit 170 and the plate discharging unit 180 at a predetermined time.

The difference will be mainly described below. The plate supply unit 170 is mainly composed of a plate supply roll shaft support means 175, a plate supply roll 2, a platen roller 3, and a plate supply arm pair 7a and 7b, which will be described later. Plate ejection unit 180
Is a plate discharge roll shaft supporting means 185, a plate discharge roll 10, a plate discharge roll cover 65, and a plate discharge arm pair 8a, 8 to be described later.
b, and a plate discharge roll gear 51.

The printing drum 5, the plate supply unit 170, the plate discharge unit 180, the ink supply means 60 and the like constitute a drum unit 220 ', and the drum unit 220'.
Is detachable from the printing apparatus main body side through a frame 351 'by a detaching mechanism (not shown).

A pair of plate feeding arms 7a and 7b are provided on the inner side of the rotation center shaft 6 of the printing drum with the printing drum 5 interposed therebetween.
[One is not shown] (hereinafter, "plate feeding arm pair 7a, 7"
b)), but a pair of plate ejection arms 8a, 8b (one is not shown) serving as roll supporting means (hereinafter, sometimes referred to as "plate ejection arm pair 8a, 8b") respectively. Rotating center shaft 6 via bearing
It is rotatably supported with respect to.

The printing drum 5 facing the ink roller 20
A press roller 11 as a pressing unit is rotatably provided around the shaft 11s in the vicinity of the lower portion of the outer peripheral surface of the.
The shaft 11s includes a pair of arms 23 arranged at both ends of the shaft,
The arms 23, 23 are supported by a shaft 23 attached to a side plate (not shown) on the main body of the printing apparatus.
It is swingably supported around s. Press roller 1
1 is a printing position where the printing drum 5 is pressed against the printing drum 5 during printing, and an unused plate feeding roll 2U and a used master 1b are wound up by the winding shaft 9 to the end when the printing is not performed, and become full. In order to avoid contact with the projecting portion of the plate discharge roll cover 65 or the like that accommodates the discharged plate discharge roll 10 (shown by phantom lines in the figure), the non-printing position separated from the outer peripheral surface of the printing drum 5 is selectively occupied. It has become. Near the left side of the shaft 23s in the drawing, a pair of upper and lower registration roller pairs 24a and 24b that convey the print sheet P fed from the upstream side by a sheet conveying unit (not shown) between the print drum 5 and the press roller 11. Is provided. Above and below the nip portion of the registration roller pair 24a, 24b, a pair of upper and lower guide plates 25a, 25b for guiding the printing paper P between the printing drum 5 and the press roller 11.
Are arranged.

At the free ends of the plate feeding arm pairs 7a and 7b,
U-shaped attachment / detachment grooves 7h for attaching / detaching the plate supply roll 2 or the unused plate supply roll 2U are formed.
A brake unit 26 that applies a predetermined braking force to the core tube 2s at each end of the plate feed roll 2 is provided in each attachment / detachment groove 7h, and the plate feed roll 2 passes through the core tubes 2s at both ends. Can be rotated by both brake units 26, and
It is detachably supported, and the plate feeding arm pair 7a,
It is supported so as not to come off from the brake unit 26 due to its inertia when the 7b rotates.

Plate supply roll 2 Support plate pair 7 near the support
The platen roller 3 has a plate feeding arm pair 7a, 7a,
It is attached by a shaft 3s rotatably supported on 7b. Plate supply arm pair 7a, 7b and plate discharge arm pair 8
The a and 8b are integrally joined by the plate feeding / discharging arm joining means 40 at the home position (plate feeding position) or the like. This plate feeding / discharging arm joining means 40
Is a locking pin 4 implanted at a predetermined position of the plate feeding arm 7b.
1, a lock lever 45 pivotally attached to a predetermined position of the plate discharge arm 8b by a shaft 43, and one end of which has a fitting groove 45h for engaging the lock pin 41 at a predetermined time, and a plate discharge arm. 8b is fixed at a predetermined position and has a plunger 46p.
This solenoid 46p has a solenoid 46 rotatably connected to the other end of the locking lever 45 via a pin.
And a fitting groove 45h of the locking lever 45 is provided between the one end of the locking lever 45 and a pin 8p planted at a predetermined position of the plate discharge arm 8b in the counterclockwise direction in the figure. And a stopper 44 that is implanted at a predetermined position of the plate discharge arm 8b and that stops the other end of the locking lever 45. The locking lever 45 is made of sheet metal and has a substantially L shape. The above-described ink absorbing means 1001 is provided at both ends of the plate discharge roller 10 of the other stencil plate making / printing apparatus 350 '.

[0080]

As described above, according to the first aspect of the invention, the ink is guided to the outer periphery of the plate discharge roll in the vicinity of the side edge of the used master, in parallel with the axis of the plate discharge roll. The ink absorbing means for forming a minute gap that causes the capillary phenomenon is arranged, and since the ink that has exuded from the both ends of the winding portion of the used master onto the plate discharge roll axis is quickly absorbed by the ink absorbing means, The ink was dropped on the printing drum because the absorption could not catch up at both ends of the plate discharge roll.
It is possible to prevent the printed matter from being soiled by the ink and from being attached to a mechanical portion around the printing apparatus to cause the apparatus to malfunction.

According to the second aspect of the invention, the ink absorbing means is constituted by winding the sheet-shaped base material and the ink absorbing member for absorbing ink around the outside of the plate discharge roll, and winding the used master. The ink bleeding on the plate discharge roll shaft from both ends of the take-up portion is quickly absorbed by the gap of the ink absorbing means, so the ink cannot be caught up at both ends of the plate discharge roll and drops onto the printing drum. It is possible to prevent the printed matter from being contaminated and from being attached to a mechanical portion around the printing apparatus to cause the apparatus to malfunction.

According to the third aspect of the invention, a plurality of holes for connecting the ink absorbing members to each other are formed in a portion of the sheet-shaped substrate of the ink absorbing device where the ink absorbing member overlaps.
Since the ink absorbing space is formed inside the ink absorbing means, the ink bleeding from the both ends of the winding portion of the used master onto the plate discharging roll shaft is quickly absorbed in the ink absorbing space, so that the above ink is discharged from the plate discharging roll. It is possible to prevent the ink from dripping on the print drum at both end portions of the printer because the ink cannot catch up with the ink, and the ink may stain the printed matter or adhere to the mechanical portion around the printing apparatus to cause the apparatus to malfunction.

According to the fourth aspect of the invention, the ink absorbing means is subjected to lipophilic treatment, and the ink that has exuded onto the plate discharge roll shaft from both ends of the winding portion of the used master is familiar to the ink absorbing means. Since it becomes easier and is absorbed quickly, the above ink is dropped on the printing drum at both ends of the plate discharge roll because the absorption of the ink cannot catch up with the winding portion of the used master, and the ink stains the printed matter or the printing device. It is possible to prevent the device from being damaged by being attached to the peripheral mechanical parts.

According to the fifth aspect of the invention, the ink absorbing means is controlled so as to be positioned below the print drum when the print drum is not rotating, so that the used master is wound. The ink adhering to the picked part does not flow over the master and does not bleed onto the outer circumference of the printing drum, but drops on the printing drum, stains the printed matter with the ink, or adheres to the mechanical part around the printing device It prevents the breakdown.

[Brief description of drawings]

FIG. 1 is a partially cutaway perspective view of an ink absorbing unit of a stencil plate making and printing apparatus showing an embodiment of the present invention.

FIG. 2 is a perspective view showing another embodiment of the ink absorbing means of the stencil plate making and printing apparatus of the present invention, and a structural enlarged configuration diagram of the used master side thereof.

FIG. 3 is a partially cutaway perspective view showing another embodiment of the ink absorbing means of the stencil type plate making and printing apparatus.

FIG. 4 is a partially cutaway perspective view of an ink absorbing unit in which a plurality of holes are formed in an ink absorbing member of the ink absorbing unit of the stencil plate making and printing apparatus of FIG.

FIG. 5 is a partially cutaway perspective view showing another embodiment of the ink absorbing means of the stencil type plate making and printing apparatus.

FIG. 6 is a partially cutaway perspective view of the ink absorbing means in which a plurality of holes are formed in the ink absorbing member of the ink absorbing means of the stencil-type plate-making printing apparatus of FIG.

FIG. 7 is a partial cross-sectional side view of a main part of a stencil type plate making and printing apparatus to which the ink absorbing device according to the present invention is applied.

FIG. 8 is a vertical cross-sectional view showing a drive unit of a printing drum of the stencil plate making and printing apparatus.

FIG. 9 is a side view showing a positioning mechanism for a printing drum and a plate feeding / discharging unit of the stencil printing machine.

FIG. 10 is a side sectional view showing a configuration of a plate feeding / discharging unit of the stencil plate making / printing apparatus.

FIG. 11 is a side sectional view of an essential part showing a configuration of a plate supply section of the plate supply / discharge unit of the stencil plate making / printing apparatus.

FIG. 12 is a side cross-sectional view of a main part showing a configuration of a plate discharge section of the stencil printing machine.

FIG. 13 is a side sectional view of an essential part showing a configuration of a plate discharge portion of the plate supply / discharge unit of the stencil plate making / printing apparatus.

FIG. 14 is a partially cutaway side view showing a roll set product of a stencil plate making and printing apparatus.

FIG. 15 is a side view of the stencil plate making / printing apparatus when printing is stopped.

FIG. 16 is a partial cross-sectional side view of a main part showing an example in which the above-described embodiment is applied to another stencil-type plate-making printing apparatus.

FIG. 17 is a partial cross-sectional view of a conventional ink absorbing device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 master 2 plate feeding roll 4 plate making means 5 printing drum 10 plate discharging roll 60 ink supply devices 91a, 91b, 8a, 8b roll supporting means 1001 ink absorbing means 1001A, 2001, 3001, 6001 ink absorbing member 4001, 5001 sheet-like substrate

Claims (5)

(57) [Claims] 1. A printing drum having a master for stencil wound around an outer peripheral surface and rotating around a rotation center axis, an ink supply device for supplying ink to an inner peripheral surface of the printing drum, and one end of the master wound And a plate supply roll for supplying the master to the printing drum, a plate making means for making the master, a plate discharge roll for winding the used master from the printing drum at the other end of the master, and a plate supply roll. And a roll supporting means that supports the plate discharge roll and is rotatable with respect to the central axis of the printing drum. In the vicinity of the side edge of the master, an ink absorbing means for forming a minute gap that causes a capillary phenomenon for guiding the ink parallel to the axis of the plate discharge roll is arranged. Ink absorber stencil type plate-making printing device according to symptoms. 2. The ink absorbing device of a stencil plate making printing apparatus according to claim 1, wherein the ink absorbing means winds a sheet-shaped base material and an ink absorbing member for absorbing ink around the outside of the plate discharge roll. An ink absorbing device for a stencil-type plate-making printing device, characterized in that 3. The ink absorbing device of a stencil-type plate-making printing apparatus according to claim 2, wherein a plurality of holes for connecting the ink absorbing members to each other are formed in an overlapping portion of the sheet-shaped substrate with the ink absorbing member. The ink absorbing device of a stencil-type plate-making printing device, which is characterized in that 4. An ink absorbing device for a stencil-type plate-making / printing apparatus according to claim 1, 2 or 3, wherein said ink absorbing means is subjected to a lipophilic treatment. Ink absorption device. 5. The ink absorbing device of a stencil plate making printing apparatus according to claim 1, 2, 3 or 4, wherein the ink absorbing means is provided below the printing drum when the printing drum is stopped rotating. An ink absorbing device for a stencil-type plate-making printing device, which is controlled to be positioned.