JP2003305934A - Ink feeding device for stencil printing apparatus and ink bottle used for it - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve various inconveniences caused by providing an ink pump on a drum side. <P>SOLUTION: A bottle mounting part 22 is provided on a removable drum 10 side on a printing apparatus main body, and an ink bottle 21 is removably provided on this bottle mounting part 22, and a flexible tube 27 whose apex is connected with an ink outlet 30 is provided on this ink bottle 21, and a tube pump 25 which presses the tube 27 of the ink bottle 21 and moves the inside ink to the ink outlet 30 side is provided on a slide rail member 3 on the printing apparatus main body side. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink supply device of a stencil printing device for supplying ink to a drum side which is detachable from a printing device main body, and an ink bottle used for the same.

[0002]

2. Description of the Related Art A stencil printing machine mounts a stencil sheet perforated on the basis of image information around a rotary cylinder of a drum, and moves the print sheet while pressing the print sheet against the rotating drum to move the ink onto the print sheet. Transferring an image or rotating the drum while rotating it while pressing the transfer cylinder against the rotating drum, transferring the ink image to the transfer cylinder once, and moving the printing paper while pressing it against the rotating transfer cylinder. A print image is created by transferring the ink image to. In such a stencil printing apparatus, a drum is detachably provided in the printing apparatus main body in order to easily perform color change, paper jamming cancellation, and the like.

A conventional ink supply device for supplying ink to the inner surface of this removable drum is arranged inside the drum 100 and does not rotate with respect to the outer peripheral wall, as shown in FIGS. 6 and 7. A frame 101, a bottle mounting portion 102 provided in the drum frame 101, in which an ink bottle (not shown) is mounted, and the bottle mounting portion 1
An ink supply path 103 that connects an ink receiving opening (not shown) and an ink supply opening that is opened above the ink reservoir on the inner circumference of the outer peripheral wall, and the ink supply path 103 that is provided in the drum frame 101. An ink pump 104 of a piston type or a trochoid type, which is interposed and uses negative pressure, is provided.

When the amount of ink in the ink reservoir decreases, the ink pump 104 is driven and the ink in the ink bottle is supplied from the ink supply port via the ink supply path 103. When the drum 100 is taken out from the printing apparatus main body (not shown), all the components of the ink supply device are taken out together with the drum 100.

[0005]

However, in the ink supply device of the conventional stencil printing apparatus, the drum 100 is used.
Since the ink pump 104 is arranged inside the drum 10,
There is a design restriction by disposing the ink pump 104 in the zero position, which makes the assembly complicated. Further, since the ink pump 104 is added to the load of the drum 100,
There are problems that the drum 100 is heavy and the handling of the drum 100 is not easy, and the cost of the drum 100 is high. Furthermore, a plurality of drums 100 may be used for changing colors.
In the case where the number of the drums 100 is held, the number of the ink pumps 104 corresponding to the number of the drums 100 is held, and considering that only one drum 100 is actually used at a time, the system of the stencil printing apparatus. As wasted.

Therefore, the present invention has been made to solve the above-mentioned problems, and an ink supply device of a stencil printing apparatus capable of eliminating various inconveniences caused by providing an ink pump on the drum side, and It is an object to provide an ink bottle used for this.

[0007]

According to a first aspect of the present invention, there is provided a bottle mounting portion on the drum side which is detachable from the main body of the printing apparatus.
An ink bottle is detachably provided in the bottle mounting portion, and in the ink supply device of the stencil printing device that supplies the ink in the ink bottle to the drum, one end is connected to the ink bottle and the other end is connected to the ink bottle. A flexible tube connected to the ink discharge port is provided, and a tube pump that presses the tube of the ink bottle to move the ink inside to the ink discharge port side is provided on the printing apparatus main body side. It is an ink supply device of a stencil printing device which is a feature.

In the ink supply device of this stencil printing machine,
There is no need to place an ink pump on the drum side. Also,
Conventionally, since the ink pumps are provided in the drums, the ink pumps are required for the number of drums, but one tube pump, which is an ink pump, may be arranged on the printing apparatus main body side.

A second aspect of the present invention is the ink supply device of the stencil printing apparatus according to the first aspect, wherein the ink bottle is provided with a tube regulating wall for regulating movement of the tube in the pressing direction by the tube pump. It is an ink supply device of a stencil printing device characterized by the above.

In the ink supply device of this stencil printing machine,
In addition to the effect of the invention of claim 1, the tube is reliably pressed and elastically deformed by the tube pump.

According to a third aspect of the present invention, there is provided the ink supply device for a stencil printing apparatus according to the second aspect, wherein the ink bottle includes a cylindrical cylindrical portion and disk side portions that block both sides of the cylindrical portion. And a tube body, wherein the tube is arranged in an arc along one side of the disc, and the tube restricting wall has an arc shape in which a cylindrical portion projects from the side of the disc. It is an ink supply device of a printing device.

In the ink supply device of this stencil printing machine,
In addition to the effect of the invention of claim 2, the tube is arranged along the bottle body.

According to a fourth aspect of the present invention, there is provided a bottle main body containing ink therein, and a flexible tube having one end connected to the ink port of the bottle main body and the other end connected to the ink ejection port. It is an ink bottle characterized by having it.

This ink bottle can be mounted in a stencil printing machine equipped with a tube pump on the printer body side to supply the ink inside.

A fifth aspect of the present invention is the ink bottle according to the fourth aspect, wherein the tube bottle is provided with a tube regulating wall for regulating the movement of the tube in the pressing direction by the tube pump. .

In this ink bottle, in addition to the action of the invention of claim 4, the tube is reliably pressed by the tube pump and elastically deformed.

A sixth aspect of the present invention is the ink bottle according to the fifth aspect, wherein the bottle body includes a cylindrical cylindrical portion and disk side portions that close both sides of the cylindrical portion, and the tube is The tube restriction wall is arranged in an arc shape along one of the disk side portions, and the tube restriction wall has an arc shape in which a cylindrical portion projects from the disk side portion.

In this ink bottle, in addition to the effect of the fifth aspect of the invention, the tube is arranged along the bottle body.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings.

1 to 5 show an embodiment of the present invention,
1 is a perspective view of a stencil printing apparatus with a drum unit pulled out, FIG. 2 is an exploded perspective view of an ink supply apparatus, FIG. 3 is an exploded front view of an ink supply apparatus, and FIG. 4A is a perspective view of an ink bottle. FIG. 5B is a side view of the ink bottle, and FIG. 5 is a front view showing the arrangement of the tube pump and the tubes.

As shown in FIG. 1, a drum unit 4 supported by a slide rail member 3 is arranged in the printing apparatus main body 2 of the stencil printing apparatus 1. This printing device body 2
The outer surface of the main body case 2a is covered with the main body case 2a.
The opening 5 is provided in a part of a. The drum unit 4 is provided so as to be insertable and withdrawable in a state of being supported by the extendable slide rail member 3 using the opening 5.

As shown in FIGS. 2 and 3, the drum unit 4 comprises a drum 10 and a drum support frame 11 which supports the drum 10. Drum 10
The drum support frame 11 has a rotatable flexible screen 12 stretched in a cylindrical shape, and ink can pass from the inner peripheral side to the outer peripheral side of the screen 12 forming the outer peripheral wall. Has been done.

The drum support frame 11 is arranged so as to surround the outer periphery of the drum 10, and is fixed to the slide rail member 3 by being placed at a predetermined position of the slide rail member 3.

The ink supply device 20 includes a drum support frame 1
1 and a bottle mounting portion 22 to which the ink bottle 21 is mounted, and an ink receiving portion 22c of the bottle mounting portion 22.
And an ink supply pipe 24 that connects an ink supply port (not shown) opened above the ink reservoir (not shown) on the inner circumference of the screen, and a tube pump 25 that is an ink pump fixed to the slide rail member 3. I have it.

The bottle mounting portion 22 has an arc-shaped bottle receiving portion 22a and a bottle holding portion 22 for holding the upper surface side of the ink bottle 21 placed on the bottle receiving portion 22a.
b and an ink receiving port portion 22c connected to the ink ejection port 30 of the ink bottle 21. As shown in FIG. 2, the bottle retainer 22b is movable to facilitate replacement of the ink bottle 21.

The tube pump 25 is a motor 25a fixed to the slide rail member 3 on the printing apparatus main body 2 side.
And a plurality of rotary drive bodies 25b rotated by the drive of the motor 25a. The plurality of rotation driving bodies 25b are arranged at positions that interfere with the tubes 27 of the ink bottles 21 mounted in the bottle mounting portion 22, and when driven to rotate, the tubes 27 are pressed to eject the ink inside the ink ejection ports 30. Move to the side.

As shown in FIGS. 4 (a) and 4 (b), the ink bottle 21 has a cylindrical cylindrical portion 26a and the cylindrical portion 26a.
The inside of the bottle body 26 is sealed with the disk side portions 26b, 26b that close both sides of the bottle body 26, and the ink is stored inside the tube body 26. The tube 27 is arranged in an arc shape along the one disk side portion 26b. Disc side part 2 on the side where this tube 27 is arranged
6b, and a tube restricting wall 28 having an arc shape in which a cylindrical portion 26a partially projects. The tube 27 is flexible and has one end connected to the ink port 29 of the disc side portion 26b and the other end connected to the ink ejection port 30. The tube 27 is arranged on the inner peripheral side of the tube restriction wall 28 in a substantially close contact state.

In the above structure, when the amount of ink in the ink reservoir in the drum 10 becomes small, the tube pump 25 is driven to drive the plurality of rotary drive members 2 as shown in FIG.
5b rotates while pressing the tube 27,
The part that receives the pressure of is internally blocked by elastic deformation,
Moreover, this closed position is moved. Due to the elastic deformation of the tube 27, the ink in the tube 27 is moved to the ink ejection port 30 side. By generating such an ink movement flow, the ink in the ink bottle 21 is supplied to the ink reservoir in the drum 4 from the ink supply port via the ink supply path 24.

To replace the drum 10 for changing the ink color, as shown in FIG. 1, the drum unit 4 is pulled out from the printer main body 2 and the drum unit 4 is removed from the slide rail member 3. Next, as shown in FIGS. 2 and 3, the drum unit 4 having the drum 10 of the desired color is set so as to be lowered from the upper position of the slide rail member 3 to a predetermined position. When the drum unit 4 is set, the inner peripheral side of the tube 27 of the ink bottle 21 is positioned so as to interfere with the rotary drive body 25b of the tube pump 25. When the drum unit 4 thus set is inserted into the printer main body 2, the process is completed.

Replacing with a new ink bottle 21 is shown in FIG.
As shown in FIG. 3, the drum unit 4 is pulled out from the printing apparatus main body 2, and the mounted ink bottle 21 is removed from the bottle mounting portion 22. Next, a new ink bottle 21
Is attached to the bottle attachment part 22. In this mounting, the ink ejection port 30 of the new ink bottle 21 is connected to the ink receiving port 2
The bottle main body 26 of the ink bottle 21 is placed on the bottle receiving portion 22a while being connected to 2c, and after the placement, the upper surface side of the bottle main body 26 is held down by the bottle holding portion 22b. When the ink bottle 21 is mounted, the inner peripheral side of the tube 27 of the ink bottle 21 is attached to the tube pump 25.
It is set to a position where it interferes with the rotary driving body 25b. When the drum unit 4 is inserted into the printer body 2 after setting the new ink bottle 21 in this way, the process is completed.

As described above, in the ink supply device 20, it is not necessary to dispose the ink pump 25 on the drum 10 side, and therefore, the design restrictions and the complicated assembly due to disposing the ink pump 25 in the drum 10 are eliminated. can do. Further, the weight of the drum 10 is reduced, the handling of the drum 10 is facilitated, and the cost of the drum 10 is reduced.

Further, in the prior art, since the ink pumps were provided on the drum 10 side, ink pumps for the number of drums 10 were required, but in the present embodiment, a tube pump, which is an ink pump, on the printing apparatus main body 2 side. It suffices to dispose one 25, and the system of the stencil printing machine 1 is not wasted.

Further, when the tube pump 25 is used, it is generally necessary to sufficiently consider the durability of the tube 27, but in the present embodiment, since each ink bottle 21 has the tube 27, only one tube 27 is used. The durability is only required to the extent that the ink bottle 21 is used up. Therefore,
There is an advantage that it is not necessary to consider the durability of the tube 27.

In the above embodiment, the ink bottle 2 is used.
1 is provided with the tube restricting wall 28 that restricts the movement of the tube 27 in the pressing direction by the tube pump 25. Therefore, the tube pump 25 reliably presses and elastically deforms the tube 27. The ink can be moved efficiently.

Further, in the above-described embodiment, the ink bottle 21 has a bottle main body 26 having a cylindrical cylindrical portion 26a and disk side portions 26b closing both sides of the cylindrical portion 26a, and the tube 27 has one side. Arranged along the disk side portion 26b in an arc shape, and the tube restriction wall 28 is arranged along the tube 27 with respect to the bottle body 26 because the cylindrical portion 26a has an arc shape protruding from the disk side portion 26b. Therefore, the ink bottle 21 can be made as compact as possible.

[0036]

As described above, according to the first aspect of the invention, since it is not necessary to arrange the ink pump on the drum side, there are restrictions in design and assembly by disposing the ink pump in the drum. The complication can be eliminated. In addition, the weight of the drum is reduced, the handling of the drum is facilitated, and the cost of the drum is reduced. Furthermore, in the past, since the ink pump was provided in the drum, ink pumps for the number of drums were required, but it is sufficient to dispose one tube pump, which is an ink pump, on the printing apparatus main body side. There is no waste as a system. When a tube pump is used as the ink pump, it is generally necessary to sufficiently consider the durability of the tube. However, in the present invention, since each ink bottle has a tube, one ink bottle is used up. Only the durability of is required. Therefore, there is an advantage that it is almost unnecessary to consider the durability of the tube.

According to the inventions of claims 2 and 5, since the ink bottle is provided with the tube restriction wall for restricting the movement of the tube in the pressing direction, the tube is reliably pressed by the tube pump to elastically deform. The ink in the tube can be efficiently moved.

According to the third and sixth aspects of the invention, since the tube is arranged along the bottle body, the ink bottle can be made as compact as possible.

According to the fourth aspect of the present invention, there is provided a bottle body having ink contained therein, and a flexible tube having one end connected to the ink port of the bottle body and the other end connected to the ink ejection port. With this ink bottle, the ink bottle can be mounted on a stencil printing machine having a tube pump on the printer body side to supply the ink inside.

[Brief description of drawings]

FIG. 1 is a perspective view of a stencil printing apparatus in which a drum unit is drawn out according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the ink supply device according to the embodiment of the present invention.

FIG. 3 is a front view of the ink supply device according to the embodiment of the present invention.

FIG. 4 shows an embodiment of the present invention, (a) is a perspective view of an ink bottle, and (b) is a side view of the ink bottle.

FIG. 5 is a front view showing the arrangement of the tube pump and the tube according to the embodiment of the present invention.

FIG. 6 is a perspective view of an ink supply device arranged in a drum, showing a conventional example.

FIG. 7 is an exploded perspective view of an ink supply device arranged in a drum, showing a conventional example.

[Explanation of symbols]

1 Stencil printer 2 Printer main body 4 drum unit 10 drums 20 Ink supply device 21 ink bottles 22 Bottle mounting section 22c Ink port 24 Ink supply pipe 25 tube pump 26 Bottle body 26a cylindrical part 26b Disc side 27 tubes 28 Tube control wall 29 Ink mouth 30 ink ejection port

Claims (6)

[Claims] 1. A stencil printing apparatus comprising a bottle mounting portion provided on a removable drum side of a printing apparatus main body, an ink bottle detachably mounted on the bottle mounting portion, and ink in the ink bottle is supplied to the drum. In the ink supply device, the ink bottle is provided with a flexible tube whose one end is connected to the inside of the bottle and the other end of which is connected to an ink ejection port, and the tube of the ink bottle is pressed against the printer body side. An ink supply device for a stencil printing apparatus, further comprising a tube pump for moving the internal ink to the ink ejection port side. 2. The ink supply device for a stencil printing apparatus according to claim 1, wherein the ink bottle is provided with a tube restriction wall for restricting movement of the tube pump in the pressing direction. Ink supply device for stencil printer. 3. The ink supply device for a stencil printing apparatus according to claim 2, wherein the ink bottle has a bottle main body including a cylindrical cylindrical portion and disk side portions closing both sides of the cylindrical portion. The tubes are arranged in an arc along one side of the disc, and the tube restriction wall has an arc shape in which a cylindrical portion projects from the side of the disc. Ink supply for a stencil printing apparatus. apparatus. 4. A bottle main body containing ink therein, and a flexible tube having one end connected to an ink port of the bottle main body and the other end connected to an ink ejection port. And an ink bottle. 5. The ink bottle according to claim 4, further comprising a tube restriction wall for restricting movement of the tube in a pressing direction by a tube pump. 6. The ink bottle according to claim 5, wherein the bottle body includes a cylindrical cylindrical portion and disc side portions that close both sides of the cylindrical portion, and the tube is on one disc side. An ink bottle, wherein the tube restriction wall has an arcuate shape in which a cylindrical part projects from a side part of the disk.