JPS584673Y2 - Continuous paper printing positioning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a printing positioning device for continuous paper in a printing machine or a similar copying machine.

When printing, for reprinting after printing once, for sheet-fed paper, set the printing position and the supply position of the printing paper in advance, and if you match this supply position precisely, you can print additionally to the print position. Printing is performed, but in the case of continuous printing paper, the feeding position is not determined for each sheet, so there is a drawback that the printing position may shift when printing is performed next time.

Therefore, it is possible to set the supply position (perforation position for continuous paper) at the tip of the printing section for reprinting like sheet paper.
However, until now, it has not been possible to position perforations on continuous paper.

In view of the above points, the present invention provides a novel idea to deal with this problem.

That is, it has through holes drilled at a constant pitch along the edge and perforations provided at constant intervals, and the perforations are located at the center between the through holes at any time. Then, using a continuous form paper that is alternately folded in a zigzag shape along the perforations, a light receiver receives continuous light (-1 This is converted into a signal wave by a signal converter, and this signal is integrated by a counter to generate a perforation signal.Furthermore, a synchronous motor, etc. that synchronizes with the pulse signal drives the supply unit and the printing plate cylinder, so that the perforation is always performed. Printing is performed by aligning the eyes with the printing position.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a continuous paper positioning device for a printing press or similar device according to the present invention will be described in detail below with reference to the drawings.

Reference numeral 1 denotes a machine body, and on one end side of the machine body 1, a continuous form paper P is provided with a large number of through holes 2 at a constant pitch along both side edges, and perforations 3 are provided at equal intervals. Fold in a zigzag shape with perforation 3 as the boundary, and this folded continuous paper P
A pedestal 4 on which the printed paper P' is placed is provided at one end, and a delivery conveyor 5 is provided at the other end to fold and send out the printed continuous form paper P' again.

Further, guide rollers 6 to 12 are arranged at desired positions on the machine body, and the most advanced guide roller 6 of the guide rollers is positioned above the pedestal 4 on which the continuous paper P is placed. .

Further, a supply section A for supplying the continuous paper P is arranged between the guide rollers 9 and 10.

This supply section A consists of a pair of sprockets 13 and 14 arranged at intervals, and a chain 16 in which pins 15 are installed at equal intervals and hung on the sprockets 13 and 14, and the pins 15 are connected to the continuous paper
The force 5 is planted at the same pitch as the through holes 2, 2 provided in the
A pin 15 is engaged with the through hole 2 and the pin 15 is meshed with the pin 15 so that the pin 15 is accurately fed out.

A printing section B is arranged between the guide rollers 10 and 11, and printing is performed between the impression cylinder 11 and the plate cylinder 18 when passing between the guide rollers.

The position of the plate cylinder 18 can be corrected by a separate drive source.

Further, between the supply section B and the guide roller 10, a projector 19 is provided facing each other through one of the through holes 2 formed in the continuous paper P.
A light receiver 20 is provided, and continuous light is received by the light receiver 20 through the through hole 2 through which the light from the light emitter 19 is transmitted.

The light receiver 20 is connected to a signal converter 21, and further connected to a counter and a counter 22, so that the received signal is converted into a signal wave through the signal converter 21, and this is counted by the counter.

The counter 22 also communicates with the setting device 23, and when the count value counted by the counter 22 matches the value set by the setting device 23, it issues a signal and automatically corrects the plate cylinder position to match the plate cylinder signal. do.

In addition, although the signal is taken out using a hole drilled in the continuous paper, in addition to that, a circular hole 2', 2', which is equally spaced through the sprocket drive shaft 24 of the supply section A, is used to take out the signal. The plate 25 is attached, and the light received by the light emitter 26 and the light receiver 27 located opposite to one of the through holes 2' of the disc 25 is communicated to the signal converter 21 to be converted into the counter counter 2.
It is designed to be counted in increments of 2.

With the above configuration, the continuous paper P is first aligned with a predetermined position and passed through the machine body 1, and during this paper feeding, a signal is sent from the through hole drilled in the continuous paper P to calculate the perforation position and the perforation signal is generated. is automatically corrected by controlling the plate cylinder position motor, etc. to synchronize with the perforation signal, and when the perforation line and plate cylinder position match during paper feeding, paper feeding is completed and printing can be started immediately. .

Furthermore, if printing deviation occurs due to fluctuations in printing tension or the like during operation, the plate cylinder position is automatically corrected as described above.

To print on the continuous paper that has been corrected in this way and folded to a certain length, the paper is fed by the supply section A and printed at an accurate position.

In addition, a pitch signal equal to the hole pitch is provided on the axis of the plate cylinder, and this is detected and compared with the hole signal to determine the deviation for each pitch, and it is also possible to correct each line.

Therefore, the printing position is always determined and printing is performed at an accurate position.

[Brief explanation of the drawing]

The drawings show an embodiment of the printing positioning device for continuous paper according to the present invention, in which Fig. 1 is a side view, Fig. 2 is a partially enlarged plan view of the main part, and Fig. 3 is a side view of Fig. 2. It is. 1... fuselage, 2,2'... through hole, 3.
...perforation, 4...cradle, 5...
... Carrying out conveyor, 6 to 12... Guide roller, 13.14... Sprocket, 15...
...Pin, 16...Cheno, 17...Curved impression cylinder, 18...Plate cylinder, 19...Projector, 2
0... Light receiver, 21... Signal converter,
22... Counter counter, 23...
Setting device, 24... shaft, 25... disc,
26... Emitter, 27... Light receiver.

Claims (1)

[Scope of utility model registration request] A printing section and a supply section driven by a synchronous motor etc. are installed in the machine,
The supply section has a large number of perforations drilled at a constant pitch along the side edge, and perforations drilled at equal intervals so as to be located in the center in any case between the perforations. Folded continuous paper is supplied through the through hole, and the machine body is further provided with a light projector and a light receiver that are opposed to each other with the continuous paper in between, at a position where the continuous paper fed from the supply section passes through the through hole. Furthermore, the light receiver is connected to a signal converter that applies the received intermittent light and converts it into a signal wave, and furthermore, the signal converter is connected to a counter counter, and the counter counter is connected to a setting device to generate continuous paper. A printing positioning device that aligns with the perforations provided.