JPS60234877A - Stencil printer - Google Patents

Abstract

PURPOSE:To permit the placing of a number of papers to be printed on a base once while enabling a smooth withdrawal thereof after printing by mounting an elastic body on a printing plate holder. CONSTITUTION:When a press lever 15 is shifted to the position as shown by the solid line, an elastic part 25 of an elastic body 23 gets in contact with papers 39 to be printed and presses them on a base 1 stacked elastically deforming. With the further pressing of the press lever 5 downward, a mimeographic printing plate holder 8 and a press body 15 both lower to bring the stencil printing plate 31 into contact with the papers 39 being printed. As the press lever 5 is even further pressed, a pin 27 as elastic body pressurizing means moves a slot 28 of the mimeographic plate holder 8 as the part 24 to be pressurized of the elastic body 23 has the end thereof inserted into a mounting groove 26 at a side piece 10 of the stencil printing plate holder 8 and the elastic body 23 deforms elastically. Thus, with the resulting elastic deformation force, the paper 39 being printed is pressed securely on the stencil printing plate holder 8.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a stencil printer that can easily print using a stencil printing original plate.

(Prior art and problems) Various kinds of stencil printers have been proposed, but
There is a lack of consideration for fixing the printing paper placed on the base, and it is troublesome to have to place the printing paper one sheet at a time on the base each time printing is done. There were disadvantages in that the paper moved, making it impossible to print clearly, and after printing, the printed paper adhered to the stencil printing original plate, making it impossible to remove the printed paper smoothly.

(Object of the Invention) The present invention improves this drawback, and enables clear printing because the printing paper is completely fixed and does not move during printing, and allows multiple sheets of printing paper to be placed on the base at once. This is a stencil printer that allows for smooth removal of printing paper after printing.

(Summary of the Invention) The present invention is a stencil plate that prints by bringing a stencil printing original plate held in a stencil printing original plate holder into contact with and separating from a printing paper placed on a base, and allowing printing ink to pass through the stencil printing original plate. In a printing machine, as the stencil printing original plate approaches the printing paper, the pressing force gradually increases as the stencil printing original plate approaches the printing paper, and at the same time, the force that acts to separate the stencil printing original plate from the printing paper increases gradually. This is a stencil printer in which an elastic body is attached to a stencil printing original plate holder.

Furthermore, the stencil printing original holder holding the stencil printing original is attached to the pressing lever, and the suppression lever is operated to move the stencil printing original into contact with and away from the printing paper placed on the base, and to release the stencil printing original from the stencil printing original. In a stencil printer that prints by passing printing ink, as the stencil printing original plate approaches the printing paper, the pressing force is gradually increased while pressing the printing paper,
and an elastic body whose force acting to separate the stencil printing plate from the printing paper increases at the same time.

This is a stencil printer attached to either the printing original plate holder or the suppression lever.

According to the present invention, unlike conventional stencil printers, the paper to be printed does not have to be attached to the base with adhesive tape each time it is printed, but can be simply placed on the base. It is possible to print and take out the printing paper after printing, and it is also possible to print with many sheets of printing paper stacked on the base, and the printing paper is stacked each time printing is completed. It has the feature that it can be taken out one by one from the top without leaving any problems.

There is still no limit to the number of stacked sheets of printing paper, so even if the height of the stacked printing papers above the base changes, printing can be performed without losing the above-mentioned characteristics.

In the present invention, in order to bring the stencil printing original plate attached to the stencil printing original plate holder into contact with the printing paper, the stencil printing original plate holder may be directly moved without providing a suppression lever, or the stencil printing original plate holder may be moved directly through the suppression lever. You may move it. Therefore, in the former case, the elastic body 9 can be attached to both the stencil printing plate holder and the suppression lever.

The elastic body used in the present invention is made by stacking one or many sheets of printing paper! It has the property of being pressed and fixed against a base, and increasing its pressing force as the stencil printing original approaches the paper to be printed. Namely.

Before printing, the paper to be printed is completely fixed to the base by the pressing force of the elastic body. This property was given because it is necessary that the stencil printing original plate and the printing paper do not shift relative to each other during the process in which the stencil printing original plate comes into contact with the printing paper, and immediately after printing is completed. When the stencil printing original plate is peeled off from the printing paper, it is possible to overcome the two forces such as the viscosity of the printing ink and the adhesion force between the stencil printing original plate and the printing paper and peel the printing paper from the stencil printing original plate. belongs to.

In general, the size of the double-edged blades described above varies widely depending on the properties of the printing ink and the area of the printing area, so the peeling force of the printing paper immediately after printing needs to be as large as possible. The purpose is sufficiently achieved because the force pressing the printing paper against the base gradually decreases as the printing paper is peeled off by the elastic body.

(Example of the present invention) Embodiments of the invention are explained in the drawings.

In the embodiment shown in FIGS. 1 to 7, a wall 3 having a horizontal groove 2a and a vertical groove 2b on the inner surface is provided on two opposing sides of the base 1. A pin 7 fixed to the side piece 6 of the pressing lever 5 having a square window 4 inside is inserted into the groove 2a, and the pressing lever 5 is closed.
is capable of horizontal movement and rotation using the pin 7 as a fulcrum.

The stencil printing original plate holder 8 has the following structure. The rectangular outer shape is slightly smaller than the window 4 of the push lever 5, and there are 4 holes inside.
It has a rectangular window 9 and is provided with spaced apart upright portions 11 on one opposing side piece 10.

The other opposing side piece 12 is provided with spaced apart protrusions 13 on its outer surface, and provided with an inclined stopper surface 14 on its inner surface.

The pressing body 15 has the following structure. The square outer shape is almost the same as the window 9 of the stencil printing original plate holder 8, and it has a square window 16 inside, and one opposing side piece 17 has a nine-arc shaped hole 18 to hold the printing original plate. An upright portion 19 is provided which bulges outward with a width that is approximately the same as the width of separation between the upright portions 11 of the body 8.

an inwardly inclined slope 2 on the outer surface of the other opposing side piece 20;
1 at the bottom of the side pieces 17 and 20.

A suppressing plate (preferably transparent) covering the window 13 is fixed to serve as a pressing part 22.

The plastic elastic body 23 consists of a pressurized part 24 and an elliptical bright part 25 having a flat surface at the bottom.

The elastic body 23 is attached by inserting the end of the pressurized portion 24 into the attachment groove 26 of the side piece 10 of the original holder 8.

The pressing body 15 is inserted into the window 4 of the stencil printing master holder 8, and the upright portions 19 are inserted between the upright portions 11.

A pin 27 serving as an elastic body pressing means is fixed to the side piece 7 of the pressing lever 5, and one end 27a of the pin 27 is inserted through the pressurized part 24 of the elastic body 23, and the pin 27 is attached to the side of the stencil printing original plate holder 8. Piece 1
The other end 27b of the pin 27 protrudes from the side piece 6 of the pressing lever 5.

A pin 294 serving as means for pushing up the pressing body is inserted into the hole 18 of the upright portion 19 of the pressing body 15, and is removably screwed to the projection 30 of the side piece 6 of the pressing lever 5, so that the pressing body 15 can swing. It becomes.

In this state, the slope 21 of the pressing body 15 is separated from the stopper surface 14 of the stencil printing original plate holder 8, and the pressing portion 22 of the pressing body 15 is recessed into the printing original plate holder 8. The amount of separation between the slope 21 and the stopper surface 14 is slightly larger than the amount of retraction of the suppressing portion 22.

When the pressing lever 5 is rotated from the chain line position to the solid line position in FIG. 2, the pin 7 of the pressing lever 5 moves horizontally in the groove 2a of the wall 3, stops, and then moves 9 rotations, and the end 27b of the pin 27 moves from the base. When a person enters the groove 2b of the wall 3 of the stand 1 and further presses the suppression lever 5 downward, the pin 29 moves through the hole 18 of the upright part 19 of the pressing body 15 and presses the standing part 19 downward, causing the pressing body 15 is descending.

The rectangular stencil printing original plate 31 (FIGS. 6 and 7) is slightly longer than the length in the side piece 1o direction of the stencil printing original plate holder 8, and slightly shorter than the length in the side piece 12 direction. A reinforcing piece 33 is fixed to the surface of the opposite end 32 in the direction of the side piece 12, and one end 35 of the printing ink-impermeable sheet 34 is sized to cover almost the entire stencil printing original plate 31.
It is fixed between the end portion 32 of the stencil printing original plate 31 and the reinforcing piece 33, and the reinforcing piece 33 and the stencil printing original plate 31 are provided with holes 33a, 31a of approximately the same size as the protrusion 13 of the printing original plate holder 8. It is.

At the time of printing, printing ink is placed on the perforated portions of the stencil printing original plate 31 which has been previously formed with perforated patterns such as characters 2 figures, etc., and the stencil printing original plate 31 is covered with 'i meat 3. The suppression lever 5 is positioned at the chain line position in FIG. 2 with the end portion 37 in contact with the stopper 38 of the base 1, and the projections 13 are inserted into the holes 31a and 33a of the stencil printing original plate 31 and the reinforcing piece 33. The stencil printing original plate 31 is attached to the printing original plate holder 8. About io sheets of paper to be printed 39 of a predetermined size are placed in the guide 40 of the base 1 in an overlapping manner.

When the suppression lever 5 is positioned at the solid line position in FIG. to press. When the pressing lever 5 is further pressed downward, the stencil printing original plate holder 8. Both pressing bodies 15 are lowered, and the stencil printing original plate 31 comes into contact with the printing paper 39, and when the suppression lever 5 is further pressed, the pressed part 24 of the first elastic body 23 has its end pressed against the stencil printing original plate holder 8. Since it is inserted into the mounting groove 26 of the side piece 10, when the suppression lever 5 is pushed down, the pin 27 as the elastic body pressurizing means moves in the long groove 28 of the stencil master holder 8, and the elastic body 9 is elastically deformed. Then, this elastic deformation force presses and fixes the stencil printing original plate holder 8 against the printing paper 39. During the operation until the stencil printing original plate holder 8 comes into contact with the printing paper 39, the 9 bullet part 25 acts as a pressing lever. 5, but the pressurized part 24 is hardly deformed, so the stencil printing original plate holder 8 and the suppressor 15
The relative positional relationship between the two does not change, and no force is applied to pressurize the printing ink. The pin 29 then pushes down the hole 18 by pushing down the suppression lever 5.

As a result, the pressing portion 22 of the pressing body 15 presses the printing ink through the sheet 34, causes the printing ink to pass through the perforated portions of the stencil printing original plate 31, and adheres to the printing paper 39 for printing.

When the suppression lever 5 is raised, the pressurized portion 2 of the elastic body 9
The recovery of the elastic deformation of 4 and the elastic deformation of the bright area 25 occur, and first the suppressor 15 that was pressing the printing ink rises, and then the elastic recovery force of the bright area 25 causes the printing paper 3 to rise.
While pressing the stencil 9 against the base 1, the stencil printing original plate holder 8 is separated from the printing paper 39 by the reaction force. Since the elastic force of the bright portion 25 of the elastic body 23 is much greater than the adhesive force of the printing ink in the printed portion, the stencil printing original plate 31 and the printing paper 39 are easily separated. When the stencil printing original plate 31 and the printing paper 39 are separated, the stencil printing original 31 is separated from the printing paper 39.
If the stencil printing original plate 31 is separated from the printing paper 39 in a sliding manner relative to the printing paper 39, the printing will be scratched.
Since the contact portion with the printing paper 39 or a portion thereof is flat, the effect is remarkable.

In addition, when the stencil printing original plate 31 and the printing paper 39 are separated, the bright portion 25 of the elastic body 23 is
It is also effective to attach an anti-slip member made of a material with a high coefficient of friction (for example, rubber) to a part of the bright part 25 so that slippage does not easily occur on the contact surface between the printing paper 39 and the printing paper 39.

After the bright portion 25 of the elastic body 23 is separated from the printed paper 39, the printed paper 39 is removed.

The above operations are repeated to print on the printing paper 39.

In place of printing by pressing the pressing part 22 of the pressing body 15 described above, printing with a squeegee is performed as follows.

The pin 29 is removed from the projection 30 of the pressing lever 5, and the suppressor 15 is removed. The sheet 34 is removed and a stencil printing original plate 31 formed by perforating patterns such as two characters and figures is attached to the stencil printing original plate holder 8. The suppression lever 5 is lowered in the same manner as in the above-described printing to bring the stencil printing original plate 31 into contact with the printing paper 39, and printing ink is placed on the stencil printing original plate 31 and squeegeeed with a squeegee (not shown). The printing ink is then passed through the perforated portion and attached to the printing paper 39 for printing. The pressing lever 5 is raised to release the bright part 2 of the elastic body 23.
The printing paper 39 on which 5 is printed is separated from the printing paper 39, and the printing paper 39 is taken out. This operation is repeated to print on the printing sheets 3 and 9.

The embodiments shown in FIGS. 8 to 1θ are based on the above-described embodiments.
The structure is almost the same except that the hole 18 in the upright portion 19 of the pressing body 15 is not provided and the pin 29 is not used. The elastic body pressing means and the pressing body pressing means are constructed as follows. The pin 41 is inserted through the pin 27 of the stencil printing master holder 8 and the side surface 17 of the pressing body 15 and fixed to the side piece 6 of the pressing lever 5. The end 41a of the pin 41 protrudes from the side piece 6, It has the same effect as the end 27b. The side part 10 of the original printing plate holder 8 is provided with a long hole 42 containing a pin 41, and the pin 41 is inserted into the hole 42 provided in the side piece 17 of the pressing body 15, so that the stencil plate can be pressed. Even after the original printing plate 31 overlaps with the printing paper 39.

When the bar 5 is pressed, the suppressor 15 is lowered.

The pin 41 in the window 9 portion of the pressing body 15 does not necessarily need to be composed of one pin, and may be removed.

During printing, the stencil printing original plate 31 with perforations and printing ink placed thereon is attached to the printing original plate holder 8 in the same manner as in the previous embodiment, and the paper to be printed 39 is stacked and placed on the base 1, and the two elastic bodies 23 are placed on top of each other. The bright portion 25 is brought into contact with the printing paper 39, and the suppression lever 5 is pressed downward. Stencil printing original plate holder 8. The pressing body 15 descends, the stencil printing original plate 31 comes into contact with the printing paper 39, and then the pressing part 22 of the pressing body 15 pushes the printing ink onto the sheet 34.
The printing paper 39 is pressed by pressing the paper 39, and then the suppressing lever 5 is raised to remove the printed paper 39. This operation is repeated to print on the printing paper 39.

In place of the elastic body 23, as shown in FIGS. 11 and 12, a plastic elastic body 23. , 232 as the pressurized part 2
4. , 242 and bright portions 25+, 252. Or as shown in Figure 13.

The elastic body 233 can be composed of a pressurized part 243 made of plastic and a bright part 253 made of metal.

The configurations of the stencil printing original plate holder 8 and the suppressor 15 can also be made as follows. The standing portions 11.1'9 of the stencil printing original plate holder 8 and the pressing body 15 are removed, as shown in FIGS. 14 and 15.

Convex portion 1 perpendicular to the inner surface of the side piece lO of the stencil printing original plate holder 8
0', a perpendicular recess 17' is provided on the outer surface of the side piece 17 of the pressing body 15, and the protrusion 10' is inserted into the recess 17', thereby allowing the stencil printing master holder 8 and the pressing body 15 to slide. be integrated into.

In the embodiments shown in FIGS. 16 and 17, a guide 44 is provided on the base 43 and outside the guide 44.

A column 46 around which a coil spring 45 is wound is provided.

The stencil printing original plate holder 47 is attached to the pillar 46 so as to be movable up and down, and the stencil printing original plate holder 47 is provided with a protrusion 48 on its outer surface in the same manner as the projection 13 of the stencil printing original plate holder 8. A pin 5 is inserted into the stencil printing original plate holder 47 and has a plastic elastic body 51 consisting of a pressurized part 49 and an elliptical bright part 50 having a flat surface at the bottom.
2 into the pressurized part 49 for installation.

During printing, printing ink (not shown) is placed on the perforated portions of the stencil printing original plate 31, which has been formed by perforating patterns such as characters 9, etc., and the stencil printing original plate 31 is placed on the sheet 34.
Then, the stencil printing original plate 31 is attached to the stencil printing original plate holder 47 in the same manner as in the previous embodiment. About 10 sheets of printing paper 39 of a predetermined size are stacked and placed in the guide 44 of the base 1.

When the stencil printing original plate holder 47 is lowered, the bright part 50 of the elastic body 51 comes into contact with the printing paper 39, and then the stencil printing original 31 comes into contact with the printing paper 39, and the stencil printing original holder 47
Fi printing ink is pressed through the sheet 34 and printed on the printing paper 39 in the same manner as in the previous embodiment.

After that, the coil spring 45 is applied to the stencil printing original plate holder 47.
After the bright portion 50 of the second elastic body 51 is separated from the printed paper 39, the printed paper 39 is taken out. The above operations are repeated to print on the printing paper 39.

The function and effect of the elastic body 51 are similar to those of the elastic body 23. The coil spring 45 can be omitted if the amount of elastic deformation of the elastic body 51 can be increased.

The embodiments shown in FIGS. 18 and 19 have substantially the same construction as the embodiments shown in FIGS. 16 and 17. Elastic body 5
1, an elastic body 55 in which a coil spring 54 is attached to a pressing member 53 is positioned slightly inward from the guide 44,
It is inserted into the mounting hole 56 of the stencil printing original plate holder 47,
The pressing member 53 is held in a state in which it partially projects from the stencil printing original plate holder 47.

During printing, as in the embodiments shown in FIGS. 16 and 17, the stencil printing original plate 31 whose perforated portions are covered with printing ink and covered with the sheet 34 is attached to the stencil printing original plate holder 47,
Approximately 10 sheets of printing paper 39 are stacked and placed in the guide 44 of the base 1.

When the stencil printing original plate holder 47 is lowered, the pressing member 53
contacts the printing paper 39, is pressed by the coil spring 54, and the pressing force increases gradually, and then.

The stencil printing original plate 31 contacts the printing paper and prints on the printing paper 39.

Thereafter, the stencil printing master holder 47 is raised by the coil springs 54 and 45, and after the suppressing member 53 is separated from the printed paper 39, the printed paper 39 is taken out. The above operations are repeated to print on the printing paper 39.

The function and effect of the elastic body 55 are similar to those of the elastic body 51.

Also, the amount of elastic deformation of the coil spring 54 is increased.

In addition, if it is possible to increase the pressing force, the coil spring 45 can be omitted.

(Effects of the Invention) As described above, the present invention enables clear printing, smooth removal of the printed paper, and the ability to print on multiple sheets of paper at once, making printing easier. It can be done efficiently and again.

After printing, the stencil printing plate is separated almost parallel to the printing paper, so the stencil printing plate and the printing paper do not rub against each other, and the printed area does not shift, allowing beautiful, detailed printing. effective.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a stencil printer according to an embodiment of the present invention, and FIG.
The figure is a sectional view taken along line 2-2m in Fig. 1, Fig. 3 is a side view of the same stencil printer, Fig. 4 is a sectional view taken along line 4-4 in Fig. 1, and Fig. 5 is a stencil printing original plate holder. , FIG. 6 and FIG. 7 are respectively a plan view and a side view of the stencil printing original plate, FIG. 8 is a plan view of a stencil printer according to another embodiment of the present invention, and FIGS. 9 and 10 are Lines 9-9 and 10-1 in Figure 8, respectively.
11 to 13 are respectively side views of the elastic body, and FIGS. 14 and 15 are respectively a plan view and a side view of a stencil printing original plate holder with a built-in suppressor,
FIGS. 16 and 17 are a plan view and a side view of a stencil printer of another embodiment, respectively, and FIGS. 18 and 19 are a plan view and a side view of a stencil printer of still another embodiment, respectively. . ■, 43...Base, 5...Press lever, 8.47...
・Stencil printing original plate holder, 15... Suppression body, 23° 231
．． 23□, 233, 50.55... elastic body, 31...
・Stencil printing original plate, 39...Printing paper. Patent applicant Pilot Mannen Pen Co., Ltd. Figure 3 Figure 4 Figure 51! 0 lt) 11 1 (J 11 26 611! 1 34 Figure 7, si aha jl 31a 32 Figure 8 72a b 38353041a 2b 1 9 Figure 121 Figure 10 Figure 11 19 1.1 5J = ! " Figure 11 Figure 1J12 Figure #! 13 Figure 19 Procedural amendments Director of the Patent Office Manabu Shiga 1 Display of case 1982 Patent Application No. 92680 2. Name of the invention, stencil printer 3. Person making the amendment, month, day, 1920 (shipment date, month, day, 1927) Contents of the amendment■, Amendment to the description (1) "Page 6, line 6 and line 7 of the same page" “This invention” is “
The present invention is corrected. (2) Correct "13" in line 10 of page 7 to "116". (3) Correct "7" in line 19 of page 7 to "6". (4) On page 8, line 9, after “15”, “15 is movable with respect to the printing original plate holder 8 and with respect to the press lever 5”
Insert. (5) Next to "while" in the second line of page 9, [moves with the stencil printing original plate holder 8 while maintaining a relatively stationary relationship with the stencil printing original plate holder 8, and performs stencil printing as described later. After the original plate 31 comes into contact with the printing paper 39 and the operation of the stencil printing original plate holder 8 stops, ” is inserted. (6) “Shita” in page 9, line 16 is corrected to “shite”. do. (7) Insert "end of" after "24" in the third line of page 11. (8) On page 14, line 13, after “without”, “, 2 books 15
Replace the diagram with the one on a separate sheet. Figure 3 Figure 4 Figure 10 Figure 15

Claims (2)

[Claims] (1) The stencil printing original plate held in the stencil printing original plate holder,
In a stencil printer that prints by passing printing ink through a stencil printing original plate in contact with and separating from a printing paper placed on a base, as the stencil printing original plate approaches the printing paper, the above-mentioned A stencil printing system in which an elastic body is attached to the stencil printing original plate holder, and the elastic body increases the pressing force while pressing the printing paper, and simultaneously increases the force that acts to separate the stencil printing original plate from the printing paper. vessel. (2) Attach the stencil printing original plate holding body holding the stencil printing original plate to a pressing lever, and operate the suppression lever to bring the stencil printing original plate into contact with and away from the printing paper placed on the base, and the stencil printing original plate is brought into contact with and separated from the printing paper placed on the base. In a stencil printer that prints by passing printing ink from a printing original plate, as the stencil printer approaches the printing paper, the pressing force is increased while pressing the printing paper, and the stencil printing An elastic body whose force acting to separate the original plate from the printing paper increases at the same time. A stencil printer attached to either one of the stencil printing original plate holder and the suppression lever.