JPH0419955B2 - - Google Patents

Description

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

(Prior Art) Various types of stencil printers of this type have been proposed, but they lack consideration for fixing the printing paper placed on the base, and each time printing is performed, one sheet of paper is being printed. The paper must be placed on the base, which is cumbersome. The paper moves during printing, making it difficult to print clearly. The printed paper adheres to the stencil printing plate, making it difficult to remove the paper. There was a drawback that I couldn't do it.

(Problems to be Solved by the Invention) The present invention improves this drawback and is based on multiple sheets of paper to be printed at once, which allows clear printing by completely fixing the paper to be printed and preventing it from moving during printing. This is a stencil printer that can be placed on a stand and that allows for smooth removal of printing paper after printing.

(Means for Solving the Problems) The present invention provides a pressing body having a pressing part for holding a stencil printing original plate and pressing the printing ink inside, on a pressing lever rotatably attached to one end of a base. A stencil printing original plate holder is swingably attached to the stencil printing original plate holder, which is movable in the vertical direction with respect to the stencil printing original plate, and the pressing body and the pressing lever are connected by a pressing body pressing means, This stencil printer is provided with an elastic body that presses a printing paper placed on a base so that it can be pressed by the pressing lever or an elastic pressing means provided on the pressing body.

Further, a pressing lever is rotatably attached to one end of the base, a stencil printing original plate containing printing ink is attached, and a pressing body having a pressing part for pressing the printing ink is movably mounted inside. a stencil printing original plate holder consisting of a stencil printing original plate holder, a pressing body pressing means for connecting the pressing lever and the pressing body, an elastic body that presses the printing paper placed on the base, and an elastic body that presses the elastic body. Using a device equipped with body pressing means, the elastic body presses the printing paper placed on the base by operating the pressing lever, and then the stencil printing original plate holder moves to press the printing paper placed on the base. A stencil printing original plate is brought into contact with the printing paper, and then the printing ink is pressed by the pressing part of the pressing body by the pressing unit to print on the printing paper, and the pressing force of the pressing lever is reduced. As the elastic force of the elastic body is weakened, the pressing body is separated from the stencil printing original plate via the elastic body pressing means, and then the stencil printing original plate is separated from the printing paper and presses against the printing paper. This is a stencil printing method characterized by printing.

The pressing member pressing means and the elastic member pressing means may be made of the same member or may function as separate members.

The elastic body pressing means may be provided on the pressing lever or on the pressing body. The elastic body only needs to be pressurized by an elastic body pressurizing means, so the pressing lever,
It can be attached to either the stencil printing master holder or the elastic pressing means. When the elastic body is attached to the elastic body pressing means, the elastic body may be swingable in the elastic body pressing means, or the elastic body pressing means to which the elastic body is fixed may be attached to a press lever or a stencil printing original plate holder. It may also be swingable.

The pressing part of the pressing body may be transparent or opaque,
It may be a rough surface or a smooth surface, a flat surface or a curved surface. The surface of the pusher may be a hard surface, a sponge surface, or may be fitted with an air or liquid bag.

(Function) Since the elastic body is pressurized by the elastic pressurizing means and presses the paper to be printed, the paper to be printed does not move until printing is completed, and the stencil printing original plate is in contact with the paper to be printed almost in parallel. , multiple sheets of printing paper can be placed on the base at once and printed clearly. After printing, while the stencil printing original plate is completely separated from the printing paper, the elastic body is pressurized by the elastic body pressure means and continues to press and fix the printing paper, so that the printing paper is attached to the stencil printing original plate. There is no adhesion and the paper to be printed can be taken out smoothly.

Since the pressing lever and the pressing body are connected to each other by the pressing body pressing means, as the pressing lever is pressed down, the stencil printing original first comes into contact with the paper to be printed, and then the pressing body is pressed down and the pressing part is pressed down. presses the printing ink, and before the stencil printing plate comes into contact with the printing paper,
Printing ink is not extruded from the stencil printing original plate, allowing clear printing.

(Example) Embodiments of the invention are illustrated 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 a side piece 6 of a pressing lever 5 having a rectangular window 4 therein is inserted into the groove 2a, and the pressing lever 5 is horizontally movable and rotatable about the pin 7 as a fulcrum.

The stencil printing original plate holder 8 has the following configuration. The rectangular outer shape is slightly smaller than the window 4 of the pressing lever 5, and it has a rectangular window 9 inside, one opposing side piece 10 is provided with a spaced apart standing part 11, and the other opposing side piece 12 is provided with a spaced apart standing part 11 on the outer surface of the other opposing side piece 12. Spaced projections 13 are provided and an inclined stop surface 14 is provided internally.

The pressing body 15 has the following configuration. The stencil printing original plate holder has a rectangular outer shape that is almost the same as the window 9 of the stencil printing original plate holder 8, has a rectangular window 16 inside, and has an arcuate hole 18 in one opposing side piece 17. An upright portion 19 is provided which bulges outward and has a width that is approximately the same as the distance between the upright portions 11 of No.8. an inwardly inclined slope 2 on the outer surface of the other opposing side piece 20;
A pressing plate (preferably transparent) covering the window 16 is fixed to the bottom of the side pieces 17 and 20, and a pressing part 2 is provided.
It is listed as 2.

The plastic elastic body 23 consists of a mounting part 24 and an elliptical elastic part 25 having a flat surface at the bottom. , an elastic body 23 is attached.

The pressing body 15 is inserted into the window 4 of the stencil printing original plate holder 8, the standing part 19 is inserted between the standing parts 11, and the pin 27 as an elastic body pressing means is fixed to the side piece 6 of the pressing lever 5. , one end 27a thereof is inserted through the attachment part 24 of the elastic body 23 and inserted into the groove 28 on the outer surface of the side piece 10 of the stencil printing original plate holder 8, so that the stencil printing original plate holder 8 becomes swingable. Yes, pin 2
The other end 27b of 7 is made to protrude from the side piece 6 of the pressing lever 5.

The pin 29 as a means for pressing down the pressing body is
5 into the hole 18 of the standing portion 19 of the press lever 5.
The pressing body 15 is removably screwed to the protrusion 30 of the side piece 6 , and the pressing body 15 is movable with respect to the stencil printing original plate holder 8 and swingable with respect to the pressing lever 5 . In this state, the slope 2 of the pressing body 15
1 is spaced apart 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 stencil printing original plate holder 8. The distance d ₁ between the slope 21 and the stopper surface 14 is slightly greater than the recess d ₂ of the pressing portion 22 (FIG. 2a).

When the press lever 5 is rotated from the chain line position in FIG.
After horizontally moving through the groove 2a and stopping, the pin 27 moves rotationally and the end 27b of the pin 27 enters the groove 2b in the wall 3 of the base 1. Further, when the pressing lever 5 is pressed downward, the pin 29 is pushed into the hole 1 of the upright portion 19 of the pressing body 15.
8, while maintaining a relatively stationary relationship with the stencil printing original plate holder 8.
move with As described later, the stencil printing original plate 31
is in contact with the printing paper 39 and the stencil printing original plate holder 8
After the operation stops, the upright portion 19 is pressed downward and the pressing body 15 is lowered.

Rectangular stencil printing original plate 31 (Figures 6 and 7)
is slightly longer than the length of the stencil printing original plate holder 8 in the 10th direction of the side piece, and slightly shorter than the length of the 12th side piece of the stencil printing original plate holder 8;
Reinforcing pieces 33 are fixed to the surfaces of opposite ends 32 of the stencil printing original plate 31 in the direction of the side pieces 12. One end portion 35 of the sheet 34 is large enough to cover almost the entire surface of the stencil printing original plate 31 and is impermeable to printing ink.
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 have the following properties:
A hole 33a and a hole 31a each having approximately the same size as the protrusion 13 of the stencil printing original plate holder 8 are provided.

At the time of printing, a stencil printing original plate 31 is covered with a sheet 34, in which patterns such as letters and figures are formed in advance by perforation, and printing ink is placed on the perforated portions. Move the pressing lever 5 to the chain line position in Fig. 2.
Hole 31a of stencil printing original plate 31 and hole 3 of reinforcing piece 33
The stencil printing original plate 31 is attached to the stencil printing original plate holder 8 by inserting the protrusion 13 into the stencil printing original plate holder 8. About 10 sheets of printing paper 39 of a predetermined size are stacked and placed in the guide 40 of the base 1.

When the pressing lever 5 is positioned at the solid line position in FIG. 2, the elastic portion 25 of the elastic body 23 comes into contact with the printing paper 39. When the press lever 5 is pressed and lowered, the bullet part 2
5 presses the printing paper 39 while being elastically deformed. Both the stencil printing original plate holder 8 and the pressing body 15 descend, and the stencil printing original plate 31 comes into contact with the printing paper 39 almost parallel to the printing paper 39 . The end of the mounting portion 24 of the elastic body 23 is inserted into the mounting groove 26 of the side piece 10 of the stencil printing original plate holder 8, so that when the pressing lever 5 is pressed down, the pin 27 is attached to the stencil printing original plate holder. 8, the elastic portion 25 is elastically deformed. This elastic deformation force presses and fixes the stencil printing original plate 31 against the printing paper 39.

During the operation until the stencil printing original plate 31 comes into contact with the printing paper 39, the elastic portion 25 is elastically deformed in response to the depression of the pressing lever 5. Since the mounting portion 24 is not elastically deformed, the relative positional relationship between the stencil printing original plate holder 8 and the pressing member 15 does not change, and no force is applied to press the printing ink. When the pressing lever 5 is subsequently pressed down, the pin 29 presses the lower edge of the hole 18 and presses down the pressing body 15, and the mounting portion 24 is elastically deformed.

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 pressing lever 5 is raised, the elastic deformation of the attachment portion 24 and the elastic portion 25 of the elastic body 23 is restored, and the pressing body 15 that was pressing the printing ink is first raised. Next, while the printing paper 39 is pressed against the base 1 by the recovery force of the elastic deformation of the elastic portion 25, the stencil printing original plate 31 is separated from the printing paper 39 by the reaction force. Since the recovery force of the elastic 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 is easily separated from the printing paper 39.

Printed paper 39 printed by the elastic part 25 of the elastic body 23
After separating the printing paper 39 from the printing paper 39, the printing paper 39 is removed. The above operations are repeated to print on the printing paper 39.

When separating the stencil printing original plate 31 and the printing paper 39,
When the stencil printing original plate 31 slides and separates from the printing paper 39, printing misalignment occurs. Since the contact portion of the resilient portion 25 of the elastic body 23 with the printing paper 39 is flat, the stencil printing original plate 31 can be separated from the printing paper 39 while keeping it substantially parallel to the printing paper 39, which has a remarkable effect of preventing printing misalignment.

When separating the stencil printing original plate 31 from the printing paper 39, the elastic body 23 is attached to the elastic part 25 so that the printing paper 39 does not slip on the contact surface with the elastic part 25 due to the adhesive force of the printing ink in the printing part. It is preferable to attach a material having a large coefficient of friction (for example, rubber) to the contact area with the printing paper 39.

When printing with a squeegee instead of printing by pressing the pressing part 22 of the pressing body 15, the following procedure is performed.

The pin 29 is removed from the protrusion 30 of the pressing lever 5, and the pressing body 15 is removed. Remove the sheet 34,
The stencil printing original plate 31 formed by perforating a pattern as described above is attached to the stencil printing original plate holder 8. The pressing lever 5 is lowered in the same manner as in the printing described above to bring the stencil printing original plate 31 into contact with the printing paper 39,
By placing printing ink on the stencil printing original plate 31 and squeezing it with a squeegee (not shown), the printing ink passes through the perforated portions and adheres to the printing paper 39 for printing. The press lever 5 is raised to separate the elastic part 25 of the elastic body 23 from the printed paper 39, and the printed paper 39 is taken out. The above operations are repeated to print on the printing paper 39.

The embodiments shown in FIGS. 8 to 10 have almost the same construction as the previous embodiments, except that the holes 18 in the upright portion 19 of the pressing body 15 are not provided and the pins 29 are not used. The elastic body pressing means and the elastic 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. A long hole 42 is provided in the side part 10 of the stencil printing original plate holder 8, and a pin 4 is provided in the side piece 17 of the pressing body.
1 is provided. Since the pin 41 is inserted into the elongated hole 42, the stencil printing original plate 31 is attached to the printing paper 39.
Even after the pressing body 15 is overlapped with the pressing lever 5, the pressing body 15 descends in response to the pressing force of the pressing lever 5. The pin 41 of the window 9 portion of the pressing body 15 does not need to be composed of one pin, and may be replaced with two pins by removing the central portion.

During printing, the stencil printing original plate 31 loaded with printing ink is attached to the stencil printing original plate holder 8, the printing paper 39 is stacked on the base 1, and the elastic body 23 is The portion 25 is brought into contact with the printing paper 39, and the pressing lever 5 is pressed downward. The stencil printing original plate holder 8 and the pressing body 15 descend, and the stencil printing original plate 31 comes into contact with the printing paper 39. Thereafter, the pressing part 22 of the pressing body 15 presses the printing ink through the sheet 34 and presses the printing ink onto the printing paper. Print on 39. The above operations are repeated to print on the printing paper 39.

11 and 12 instead of the elastic body 23
As shown in the figure, plastic elastic bodies 23 ₁ and 23 ₂ are connected to pressurized parts 24 ₁ and 24 ₂ , respectively;
It can be composed of bullet parts 25 ₁ and 25 ₂ . Or
As shown in FIG. 13, the elastic body 23 ₃ can be composed of a pressurized portion 24 ₃ made of plastic and a resilient portion 25 ₃ made of metal.

The stencil printing original plate holder 8 and the pressing body 15 can also be configured as follows. By removing the former standing portion 11 and the latter standing portion 19, FIGS.
As shown in FIG. 5, the side piece 10 of the stencil printing original plate holder 8
A convex portion 10' is provided perpendicular to the inner surface of the press body 15, and the convex portion 10' is inserted into a concave portion 17' perpendicular to the outer surface of the side piece 17 of the pressing body 15. to be movably installed.

(Effects of the Invention) The present invention enables clear printing, smooth removal of the printed paper, and printing on multiple sheets of paper at once, resulting in high efficiency. Since the stencil printing original plate is spaced apart substantially parallel to the printing paper, the stencil printing original plate and the printing paper do not rub against each other, and there are effects such as fine printing without printing deviation.

[Brief explanation of drawings]

FIG. 1 is a plan view of a stencil printer according to an embodiment of the present invention, FIG. 2 is a sectional view taken along line 2-2 in FIG. 1, and FIG.
The figure is a partially enlarged view of Figure 2, Figure 3 is a side view of the same stencil printer, Figure 4 is a sectional view taken along line 4-4 in Figure 1,
FIG. 5 is a bottom view of the stencil printing original plate holder, FIGS. 6 and 7 are a plan view and a side view of the stencil printing original plate, respectively, and FIG. 8 is a plan view of a stencil printer according to another embodiment of the present invention. , FIGS. 9 and 10 are cross-sectional views taken along lines 9-9 and 10-10 in FIG. 8, respectively;
11 to 13 are side views of different elastic bodies, and FIGS. 14 and 15 are a plan view and a side view, respectively, of a stencil printing original plate holder incorporating a pressing body. 1,43...Base, 5...Press lever, 8,4
7... Stencil printing original plate holder, 15... Pressing body, 2
3, 23 ₁ , 23 ₂ , 23 ₃ ... elastic body, 31 ...
Duplicate printing original plate, 39...Printing paper.

Claims (1)

[Scope of Claims] 1. A pressing member having a pressing part that holds the stencil printing original plate and presses the printing ink inside the stencil printing original plate is attached to a pressing lever rotatably attached to one end of the base against the stencil printing original plate. A stencil printing original plate holder, which is movable in the vertical direction by a stencil printing plate holder, is swingably mounted therein, and the pressing body and the pressing lever are connected by a pressing body pressing means, and the object placed on the base is connected to the pressing body and the pressing lever. A stencil printer, in which an elastic body for pressing printing paper is arranged so as to be pressurable by the pressing lever or an elastic pressing means provided on the pressing body. 2. A press lever rotatably attached to one end of the base, a stencil printing original plate containing printing ink attached thereto, and a press body having a press part for pressing the printing ink movably mounted inside. a stencil printing original plate holder, a pressing body pressing means for connecting the pressing lever and the pressing body, an elastic body that presses the printing paper placed on the base, and an elastic body that presses the elastic body. Using a device equipped with a pressure means, the elastic body presses the printing paper placed on the base by operating the pressure lever, and then the stencil printing original plate holder moves to press the stencil plate. A printing original plate is brought into contact with the printing paper, and then the printing ink is pressed by the pressing part of the pressing body by the pressing unit to print on the printing paper, and the pressing force of the pressing lever is weakened. Accordingly, the pressing body is separated from the stencil printing original plate by the elastic force of the elastic body via the elastic body pressing means, and then the stencil printing original plate is separated from the printing paper and printing is performed on the printing paper. A stencil printing method characterized by: