JPH043798Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention is a small mimeograph machine in which a plate maker is integrally or removably incorporated into the base plate body, in particular, the base plate body and printing pressure plate are arranged along one edge. Pivotally connected,
This invention relates to an electrode switch for a small-sized mimeograph plate maker in which a press support frame is swingably supported on a base plate body.

Conventional technology In recent years, a transparent film is pasted on one side of a paper frame with a window, and heat-sensitive stencil paper is pasted on the other side, and the original is printed on the heat-sensitive stencil paper with a special beam of light to make a plate.
It is known to print by applying the necessary ink on heat-sensitive stencil paper and attaching it to a small mimeograph plate, one of which is the end of the base plate main body having an elastic mat for printing on which the printing material is placed. A small mimeograph plate is known, which consists of a printing press plate which is pivotally mounted along one of its edges and supports a printing original plate at a position corresponding to the printing material, and in which a plate making device is integrally or detachably incorporated. .

Problems to be Solved by the Invention However, in small-sized mimeograph machines in which such a plate-making device is integrated or detachably incorporated, push-button switches, rotary switches, Alternatively, a micro switch or the like is installed on either the base plate body or the printing press plate, and the switch is operated in synchronization with the pressing contact between the heat-sensitive printing original plate and the document to perform thermal platemaking.
It is difficult to synchronize the pressure contact between the heat-sensitive printing plate and the document and the operation of the switch, and it is difficult and requires special ingenuity, and each switch must be specially installed, making it double as a safety switch. However, there are drawbacks to adding these functions, such as increased costs.

Purpose of the invention Therefore, the purpose of this invention is to make the lower surface of the front frame edge of the press support frame swingably supported on the base plate body slightly smaller than the base plate body, in order to eliminate such drawbacks of the conventional device. The front frame edge curves into an arched shape and the center part comes into contact with the base plate only when the pressure is applied sufficiently. To provide a safety switch-type electrode switch for a small-sized mimeograph plate maker capable of closing a flashbulb circuit by short-circuiting a pair of contact members.

According to this invention, an electrode switch for a small mimeograph plate maker is provided in which a base plate main body in which a plate maker is integrally or removably incorporated and a printing pressure plate are pivoted along one of the edges. In a small mimeograph plate in which the press support frame is swingably supported on the base plate body, a bridging strip for a switch is provided approximately in the center of the front frame edge of the press support frame, and corresponds to the bridging strip. A pair of switch contact members are provided at positions on the base plate body that are separated from each other and can be connected by a bridging strip. It is characterized in that the bridging strip bridges the contact members and closes the circuit only when they are slightly separated and pressed.

These and other objects, features and advantages of the invention will become apparent from the following detailed description of the embodiments illustrated in the accompanying drawings.

Embodiment of the invention The embodiment of the invention shown in the drawings is an example of a small mimeograph plate in which a plate maker is incorporated into the main body of the base plate.

As shown in Figures 1 to 7, a small mimeograph plate equipped with an electrode switch for a plate maker according to this invention is
A base plate body 1 in which a plate-making device 5 is integrally incorporated, a printing press plate 3 pivotally supported on one edge of the base plate body 1 by a hinge mechanism 2, and a printing press plate 3 that is swingable on the base plate body 1. A press support frame 6 disposed on the support frame 6 and a support surface 26 of the press support frame 6 on the base plate body 1 supported by a support surface 26 of the press support frame 6 of the hinge mechanism 2 are supported by the plastic holding plate 8 and the printing substrate 9. It mainly consists of frame 7. The base plate main body 1 and the printing press plate 3 are made of a suitable heat-resistant plastic material, for example, and have hinge ears 11 and 12 that stand upright on one edge of the two and protrude upward and downward. These hinge ears 11 and 12 are pivotally connected by a hinge mechanism 2 consisting of a pin 14 that pivotally connects them. Further, the pin 14 of this hinge mechanism 2 has a printing material 9
A holding frame 7 that supports a printing original plate 8 is pivotally mounted. Furthermore, in the illustrated embodiment, a plate making device 5 is mounted on the base plate main body 1.
A pair of flash bulbs 15 are provided, and an electrode switch of this invention enables the light to be emitted during plate making as described later by the current from the battery 17 in the battery chamber 16. It's summery.

Openings 18 of the plate maker 5 near both sides of the base plate body 1
A pair of cam members 20 are provided on the outside of the cam member 20 and extend in parallel with each other at intervals. Each cam member 20
has a curved portion 21 on the side of the hinge mechanism 2, and the remaining portion forms a substantially horizontal portion 22. A pressing support frame 6 is provided with these cam members 20 so that the lower surfaces of the frame edges on both sides thereof contact and engage with each other. This press support frame 6 has a frame edge 2 that slightly protrudes downward around the periphery.
5, the opening 18 of the plate maker 5
A frame edge 25 surrounds the edge, and in particular, the lower side of the frame edge on both sides is formed to be located on the cam member 20, and the upper surface is made of a suitable transparent material so as to form a flat support surface 26. There is.

As shown in FIGS. 6 and 7, the printing plate holding frame 7 is made of a plastic plate or a metal plate, and has a window-like opening 28 in the center that matches the size of the printing material 9.
are provided, and a holding claw 29 that locks the corner of the printing medium 9 is provided at the corner, and a claw portion 30 protruding from the opposite side.
It is preferable to bend the claw portion 30 slightly upward if necessary. The holding frame 7 also has hinge ears 3 that stand upright on both sides of one edge.
1, and is pivotally supported by the pin 14 of the hinge mechanism 2 at this hinge ear 31. Furthermore, the edge of the holding frame 7 where the hinge ears 31 are located is bent downward to form a support part 32 into which the side edge of the printing original plate 8 is inserted and supported. Further, as shown in the figure, on the lower surface of the printing press plate 3 which is pivotally supported on the base plate main body 1, an elastic mat 3 for printing made of a suitable elastic material is provided.
3 is provided.

In the compact mimeograph plate constructed in this manner, the electrode switch for the plate maker of this invention is arranged at the front frame edge 25 of the press support frame 6 surrounding the edge of the opening of the plate maker 5.
a pair of switch contact members separated from each other and provided corresponding to the bridging strip 36 at approximately the center of the base plate main body 1 on the battery chamber 16 side. 35, and the pair of contact members 35 can be short-circuited by a bridging strip 36. Therefore, the bridging strip 36 and the contact member 35
is a flashlight bulb 1 powered by a battery 17 in a battery compartment 16
It constitutes an electrode switch that opens and closes the electric circuit of No. 5. In particular, as shown in FIG.
It will be understood that an adjusting member 38 and an adjusting screw 39 are provided in order to adjust the degree to which the end portion of the base plate protrudes from the base plate main body 1, and that the amount of protrusion can be adjusted by the adjusting screw 39. This is because when the printing press plate 3 is pressed down, the lower surface of the frame edge 25 on the front side of the press support frame 6 is always slightly away from the base plate main body 1.
In this state, the bridging strip 36 does not contact the contact member 35, and if the printing press plate 3 is then sufficiently pressed, the press support frame 6 will function as a fulcrum with both sides fixed, and the center portion of the frame edge 25 will arch downward. The bridging strip 36 is bent into the state shown by the chain line, so that the bridging strip 36 is connected to the contact member 3.
5 to short-circuit and close the electric circuit of the flashbulb 15, allowing the flashbulb 15 to emit light. In particular, when the lower surface of the frame edge 25 of the press support frame 6 is always
A thin bridging strip 36, such as a metal foil, which is slightly spaced apart from the contact member 35 serves as a safety switch.

Function of the device In order to perform plate making on a small mimeograph plate in which the electrode switch for the plate maker of this device configured as described above is installed and the plate maker 5 is incorporated, a battery 17 is inserted into the battery chamber 16 of the base plate main body 1. , a flash bulb 15 is attached to the plate maker 5, a pressure support plate 6 made of a transparent material is set at a predetermined position in the opening of the plate maker 5, and the heat-sensitive printing original plate 8 is placed in the holding frame 7 together with the original to be plate-made. The thermosensitive printing original plate 8 is set by inserting it into the support part 32. Next, when the printing press plate 3 is pressed down, the holding frame 7 and the heat-sensitive printing original plate 8 are brought into pressure contact with the support surface 26 of the press support frame 6 almost uniformly over the entire surface via the elastic mat 33. In this state, the lower surface of the front frame edge 25 of the press support frame 6 is still slightly apart from the base plate body 1, and the bridging strip 36 does not short-circuit the contact member 35. Next, if you press the printing press plate 3 further,
The front frame edge 25 of the press support frame 6 is curved in an arched direction with both sides fixed as fulcrums as shown by the chain line in FIG. 5, so that the bridging strip 36 short-circuits the contact member 35. Flashlight bulb 15 powered by battery 17
The electric circuit is closed to emit light from the flash bulb 15, whereby the heat-sensitive printing original plate 8 can be made into a heat-sensitive plate.

Effects of the invention As described above, in the electrode switch for a small mimeograph plate maker of this invention, when plate making is required, a battery and a flash bulb are attached to the plate maker built into the small mimeograph plate.
The heat-sensitive printing original plate is set together with the original on the support surface of a transparent material press support frame installed on the plate maker, and the printing press plate is pushed down to connect the heat-sensitive printing plate to the holding frame through the elastic mat. Press the original printing plate against the support surface of the press support frame with an even pressing force on the entire surface,
Normally, the lower surface of the front frame edge of the press support frame is still slightly apart from the base plate body, so the bridging strip does not yet short-circuit the contact member, and when the press force is applied sufficiently, the press support frame The frame edge curves downward in an arcuate shape so that the lower surface of the frame edge contacts the base plate body, thereby causing the bridging strip to short-circuit the contact member and close the electrical circuit of the flash bulb. The electrode switch can function as a safety switch, the degree of contact can be suitably adjusted by the adjusting member, and the flash bulb can prevent accidental light emission.It has a simple structure and is highly stable. This has the advantage of providing an electrode switch. In addition, the flash bulb is 1
Of course, only one or two may be attached.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of a small mimeograph plate equipped with an electrode switch for a plate-making machine of this invention, and Figure 2 is a side sectional view of a small mimeograph plate equipped with an electrode switch for a plate-making machine of this invention.
3 is a plan view of the main body of the base plate, FIG. 4 is an enlarged partial cross-sectional view of the cam member, and FIG. 5 is an enlarged cross-sectional view of the electrode switch for a plate maker according to this invention. FIG. 6 is a plan view of the holding frame, and FIG. 7 is a central sectional view of the holding frame. In the figure, 1...base plate body, 2...hinge mechanism, 3
... Printing press plate, 5 ... Plate maker, 6 ... Press support frame, 7 ... Holding frame, 8 ... Printing original plate, 9 ... Printing material, 20 ... Cam member, 35 ... Contact member, 3
6...Bridging strip, 38...Adjustment member, 39...Adjustment screw.

Claims (1)

[Scope of utility model registration request] In a small mimeograph plate in which a base plate body in which a plate maker is incorporated and a printing plate are pivotally connected along one of the edges, and a press support frame is swingably supported on the base plate body, the front side of the press support frame is A switch bridging strip is provided approximately in the center of the frame edge of the switch, and a pair of switches can be separated from each other and connected by the bridging strip at positions on the base plate body corresponding to the bridging strip. Normally, the front frame edge of the pressing support frame is slightly separated from the base plate body, and only when pressed, the bridging strip bridges the contact member to close the circuit. An electrode switch for a small-sized mimeograph plate maker.