JPS5938292Y2 - Imprinter - Google Patents

Description

[Detailed description of the invention] This invention is an improvement of an imprinter used to print a printing plate with raised characters on the surface, such as a credit card, on a slip or other specified copy paper. Regarding.

In general, this type of imprinter has a roller platen built into a carriage that can freely reciprocate on a printing plate, and when the carriage moves back and forth, the platen rotates in sliding contact with the surface of the copy paper on the printing plate. This method was to transfer the characters on a printing plate located below the paper, but normally, in order to prevent so-called double printing, the platen must be raised either during the forward or backward movement of the carriage.1. ．． There was one.

Conventionally known imprinters all have complicated lifting and lowering mechanisms for the platen, and require considerable strength and precision from each member, so most of the members have no choice but to be made of metal. Therefore, it was not only inconvenient to carry and operate due to its weight, but also had many technical problems that still needed to be improved, such as corrosion of metal parts due to chemicals and the like.

In addition, in known imprinters, the paper holding mechanism for preventing the movement of the copy paper placed on the platen depended on the elastic force of the claws of the spring lever. If the elasticity is weak, the deterrence is uncertain, and if the elasticity is strong, a large amount of force is required for the switching operation, and technical deficiencies were found in this area as well.

In order to solve the technical problems described above, this invention aims to simplify the elevating mechanism of the row 2 platen incorporated in the carriage, and replaces all the members conventionally made of metal with plastic materials. The objective is to provide a new imprinter that can be replaced and at the same time can be operated smoothly and reliably by changing the paper holding mechanism on the printing plate from the conventional spring lever-based locking system to a new system using an eccentric cam. It is.

The structure of the present invention will be explained below according to an embodiment. In the figure, 1 is a printing plate made of synthetic resin, and rails 2 are provided on both longitudinal edges of the plate, and a handle 3 is provided through one end of the plate. A plate 4 for placing paper is removably fixed on its surface, and a paper holding mechanism 5 is provided on the platen, and a slide launch 12 of a carriage 7, which will be described later, is operated near one side edge. A τ-shaped guide 6.6 is protrudingly provided to move the platen 8, and has a rising sloped edge 6a for lifting the platen 8 on the negative side thereof, and a downward sloped edge 6'a for moving the platen 8 downward on the other side. It was formed.

Further, 7 is a carriage whose trochanters 7' fit into the rails 2, 2 of the plate table 1 and can reciprocate on the plate table, and inside the carriage there is a frame mount fixed to the ceiling surface. A frame 9 which separately supports a platen 10 on a shaft is pivotally attached to the frame 9 so that the frame 9 can be returned by tension of a spring 9'.
A locking groove 9' having an inverted trapezoidal shape is recessed in the front surface of the holder.

On the other hand, reference numeral 12 denotes a slide launch made of a synthetic resin with excellent slipperiness that can freely move within the slot 11 bored from one side edge of the frame mounting base, and a pin 13 is provided upright at the base of the slide launch. A locking claw 12' having a shape matching the locking groove 9' of the frame is formed on the other side, and the lower part of the pin 13 slides into contact with the guide 6.6' of the plate stand 1. By being guided, the slide launch 12 reciprocates laterally within the slot 11, and its locking pawl 12' can be inserted into and removed from the locking groove 9' of the frame 9.

Note that 14 in the figure indicates a slot for guiding the pin 13 of the slide launch.

Further, the paper holding mechanism 5 supports an eccentric cam 5' having large and small blades 15 and 15' projecting from its outer circumferential surface so as to be rotatable in forward and reverse directions. Out of the through holes formed on the front and rear walls, the through hole 1 on the terminal side
6 and are pushed in the respective directions.

Further, a leaf spring 18 placed on the lower surface of the eccentric cam is a kink spring that is elastically loaded between the eccentric cam and its mounting member as necessary, and serves to hold the eccentric cam in a fixed position.

The present invention has an inclined structure, and its operation will be explained next. First, when the carriage 7 is at the starting end, that is, at the position shown by the dashed line in FIG. 1, the pin 13 of the slide launch is Since it is guided by the guide 6 of the stand and retreated, its locking pawl 12' fits into the locking groove 9' of the frame 9 to keep the platen 10 in the lowered state, and the paper holding mechanism 5 When the blades 15' of the cam 5' are pressed by the inner wall of the passage hole 16 of the carriage and rotated by a certain amount, a certain gap is created between the cam 5' and the printing plate, and one end of the copy paper B is part is ready for insertion.

Therefore, by placing a printing plate A such as a card on the mounting plate 4, and inserting an appropriate sheet of paper B into the paper holding mechanism 5, and sliding the carriage 7 from the starting end toward the end, the above-mentioned eccentric The blades 15 of the cam 5' come into contact with the outer wall of the passage hole 16 of the carriage and are pushed in the opposite direction, so that the eccentric cam 5' firmly secures the paper B between it and the printing table 1. do.

If the carriage is moved further in this state, the platen 10, which has already been lowered, will rotate over the paper, and the characters projected on the printing plate A will be transferred onto the copy paper B by the sliding force. .

When the carriage 7 approaches the end of the plate base in this manner, the pin 13 of the slide latch 12 is gradually guided inward by the upwardly inclined edge 6a of the guide 6, and the slide launch moves accordingly. When the pawl 12' is released from the locking groove 9' of the frame, it pushes out the frame 9 against the elasticity of the spring 9'' and rotates it upward, so that the carriage moves as shown by the dotted line in Figure 1. When the printing table 1 is moved to the end of the printing plate 1, the planer/10 integrally supported by the frame 9 rises and remains in that state.

Therefore, even if the carriage 1 is returned to the starting edge direction, the platen will not come into contact with the paper surface and double printing will not occur. The pin 13 of the slide latch 12 is gradually pushed back outwards by the downwardly inclined edge 6/a of 6', so that the launch retreats along the slot 11,
The locking pawl 12' gradually falls into the locking groove 9' of the 7 frames, and together with the contraction force of the spring, the frame 9 is rotated toward the frame mounting base 8, so that the platen is automatically moved. It descends and returns to its original position.

On the other hand, when the carriage 7 passes through the paper holding mechanism 5 section, the inner wall of the through hole 16 pushes the outer piece 15' of the eccentric cam 5', and a gap is again created between the cam and the plate bed. When the platen is at the starting end, sheets, etc. can always be replaced freely.

As detailed above, according to the imprinter of the present invention,
The displacement of the platen is performed by the sliding action of a slide launch made of synthetic resin with excellent lubricity, and by simplifying the mechanism, most parts such as the printing plate and carriage are made of synthetic resin with excellent chemical resistance. It is significantly lighter and stronger than conventional imprinters of this type, and has the excellent features of being able to produce large widths at low cost. By adopting the eccentric cam system, the smoothness and reliability of printing operations can be significantly improved, and its practical effects are extremely large.

[Brief explanation of the drawing]

The drawings show an embodiment of the imprinter of the present invention; FIG. 1 is a plan view thereof, FIG. 2 is an enlarged sectional view taken along line C-C in FIG. 1, and FIG. 3 is a partially cutaway slope showing the internal structure of the carriage 4 are partially cutaway side views showing the structure of the paper holding mechanism. In addition, in the figure 1... plate stand, 3... handle, 4
... Plate, 5 ... Paper holding mechanism,
5'...Eccentric cam, 6゜6'...Guide, 7...Carriage nozzle, 8...Frame mounting base, 9... Frame, end...Latching groove, 9'...Spring, 10...Platen, 11...Sloft, 12...
Lined launch, 12'...Latching claw, 13...
...Pin, 15,15'...Iseko, 18.
...Kink Spring.

Claims (1)

[Claims for Utility Model Registration] 10 A platen of a carriage that can freely reciprocate above a printing plate is lowered either forward or backward, and is superimposed on a printing plate on the printing plate,
In an imprinter that is capable of printing characters, etc. on the printing plate by sliding and rotating the surface of a copy sheet held down by a paper holding mechanism, a printing plate having a handle connected to one edge thereof is used. a rising sloped edge near one side edge for lifting the platen;
On the ceiling surface of the carriage, a guide is provided opposite to a downwardly inclined edge for moving the platen downward.
Frame mounting, which has locking claws hanging down on the lower surface and a slide launch that can slide laterally with pins protruding from the lower end, fixes the base, and furthermore, the frame mounting has a platen supported on the base. A frame having a locking groove on the front surface into which the locking pawl can be freely inserted is pivotally mounted to be able to return to the frame by a spring, and the pin of the slide launch is guided by the \\ type guide when the carriage reciprocates. An imprinter characterized by being designed to 2. An imprinter according to claim 1, in which the paper holding mechanism on the printing plate is operated by an eccentric cam that has large and small blades protruding from its outer peripheral surface and is rotatable by a certain amount.