JPH0139093B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to an apparatus for creating a sample printing plate for a plurality of color printed matter when offset printing is performed.

(Prior art) When printing a sample using conventional offset printing,
As shown in FIG. 9, for example, a yellow original plate 21 is set on a metal plate 20, and yellow printing is performed on printing paper 23 set on the other metal plate 22. A registration mark 21a is displayed on the yellow original plate 21. Therefore, on the printing paper 23 there is a yellow original image 24 and a registration mark 24a.
is printed. Next, register mark 2 on printing paper 23
A hole 24b is made in the portion 4a. Next, as shown in FIG. 10, a red original plate 25 is set on the metal plate 20 and printed directly on the other metal plate 22 with red ink. The red original plate 25 also has the same registration mark 25a as the yellow original plate.
is displayed, so the red original picture 2 is displayed on the gold plate 22.
6 and the registration mark 26a are printed. The printing paper 23 is set with the holes aligned with the registration mark 26a, and red printing is performed on the printing paper 23. In this way, printing of other colors is performed sequentially.

In this way, in the past, the printing paper was positioned according to the registration mark each time each color was printed on each printing plate for one printed matter, so it was not possible to print samples of multiple types of printed matter at the same time, so sample printing was not possible. The problem was that it was inefficient.

(Objective) An object of the present invention is to create sample printing color original plates for a plurality of color printed matter without any deviation, and to perform sample printing efficiently.

(Structure) In order to achieve the above object, the present invention includes a frame body rotatably attached to a base having a permanent magnet plate, a bar movably attached to the frame body, and a film mounting plate detachably attached to the bar. It is characterized by being fixed to.

A detailed explanation will be given below based on the illustrated embodiment. Reference numeral 1 denotes a base in which a magnetic plate 12 and a decorative plate 13 are superimposed and fixed on an iron plate 11, and pins 1a protruding from the periphery of the upper surface thereof are fitted into attachment holes 2a of a printing original plate 2. Reference numeral 3 denotes a frame body pivotally attached to the back edge of the base 1 with a hinge or the like so as to be freely rotatable in the vertical direction.
A frame holder 4 is attached between both side edges of the base 1 and both side edges of the base 1, so that the frame 3 can be rotated upward and held at that position. A large number of screw holes 3a are formed at regular intervals on the upper surface of the frame 3.
5a is a vertical bar made of a thin stainless steel plate that spans the front and rear of the frame 3, and 5b is a similar horizontal bar that spans the left and right sides of the frame 3. The holes at both ends are aligned with the screw holes 3a, and the screws 6 are inserted into the holes. The vertical bar 5a and the horizontal bar 5b are fixed in arbitrary positions by being screwed into the screw holes 3a. Reference numeral 7 denotes a film mounting plate, on which pins 7a projecting are fitted into mounting holes 8a formed in the red film 8 at regular intervals.

Next, the effect will be explained. Place the original printing plate 2 on the base 1, fit the mounting hole 2a into the pin 1a,
Fix it in place. As shown in FIG. 6, the vertical bar 5a and the horizontal bar 5b are moved to match the size of four color printed matter, for example, a red film 8, and are fixed to the frame body 3 with screws 6. At this time, the vertical bar 5a and the horizontal bar 5b are attracted by the magnetic plate 12 and come into close contact with the base 1. Four film mounting plates 7 are fixed to the vertical bar 5a and horizontal bar 5b with adhesive tape, and the mounting holes 8a of the red film 8 are fitted into the pins 7a of the four film mounting plates 7. Next, the hole 9a of the magnetic push plate 9
When the red film 8 is placed on the red film 8 by aligning it with the pin 7a of the film mounting plate 7, the magnetic press plate 9 is attracted to the magnetic plate 12 and the red film 8 is brought into close contact with the film mounting plate 7. Next, red film 8
When a wider elastic magnetic plate (not shown) is lightly rubbed on the red film 8 from the film mounting plate 7 toward the tip, the elastic magnetic plate is attracted to the magnetic plate 12 and moves, so that the red film 8 The air between the base 1 and the red film 8 is pushed out, and the red film 8 is brought into close contact with the base 1. Fix this red film 8 on the base 1 with adhesive tape, remove the magnetic push plate 9, remove the mounting hole 8a of the red film 8 from the pin 7a of the film mounting plate 7, and attach the frame 3 as shown in FIG. It rotates upward, removes the attachment hole 2a of the printing original plate 2 from the pin 1a, and creates a red printing original plate by baking with a separately installed printing device.

Printing original plates for each of the other colors are created in the same manner. Using these original printing plates for each color, offset printing is performed on printing paper, and sample printing of four colored printed materials is performed.

The vertical bar and the horizontal bar may be one or more depending on the size of the color film, and film mounting plates of various sizes may be used depending on the type of color film.

(Effects) In the present invention, a frame body is rotatably mounted on a base having a permanent magnet plate, a movable bar is attached to the frame body, and a film mounting plate is detachably fixed to the bar. Therefore, color original plates for sample printing of multiple color printed matter can be created without any deviation, and sample printing can be performed efficiently.

[Brief explanation of drawings]

Fig. 1 is a perspective view of an embodiment of the present invention when the frame body is opened, Fig. 2 is a perspective view of the frame body of Fig. 1 when it is closed, and Fig. 3 is a plan view of the frame body of Fig. 1. Fig. 4 is a plan view of the color film, Fig. 5 is a plan view of the original film, Fig. 6 is a plan view of the color film attached to the frame shown in Fig. 3, and Fig. 7 is a plan view of the frame shown in Fig. 6. FIG. 8 is a plan view of the removed film original plate, FIG. 8 is a plan view of the film original plate after printing has been completed, and FIGS. 9 and 10 are explanatory perspective views of sample printing performed by the conventional method. 1... Base, 3... Frame, 5b... Horizontal bar, 7a... Pin, 12... Magnetic plate, 5a... Vertical bar, 7... Film mounting plate, 8... Red film.

Claims (1)

[Claims] 1. In offset printing, a frame is rotatably mounted on a base having a permanent magnet plate, a bar is movably attached to the frame, and a film mounting plate is detachably fixed to the bar. A device for creating a sample printing plate for multiple color printed matter.