JP2800560B2 - Newspaper printing plate misinstallation detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a newspaper printing plate erroneous mounting detection device.

[0002]

2. Description of the Related Art A newspaper rotary printing press is composed of a plurality of printing units. In each printing unit, printing plates corresponding to the number of pages of a newspaper and a color plate (YMCK) are set at a time, and printing is performed. Will be In a newspaper printing factory equipped with this newsprint rotary printing press, the composition of the newsprint changes with the passage of time, starting with the first edition. The composition of the newspaper page is changed according to the area where the newspaper is delivered. Therefore, the printing plate is frequently exchanged. Whether or not the printing plate has been exchanged correctly is picked up from printed newspapers coming out of the folding machine and visually checked by an operator.

Recently, there has been proposed an image pickup device mounted near a transfer cylinder, which is compared with press controller information to determine whether the image is correct or not. However, in the above-mentioned means, since there is almost no space to be mounted on an actual transfer machine, the equipment is complicated, and there is considerable ink mist (ink splash) near the plate cylinder due to operation of the transfer machine, and the humidity becomes considerably high. Further, other operations such as maintenance (maintenance for sensor contamination and stable operation of the device) impose a considerable burden on the operator.

[0004]

Conventionally, as described above, whether or not the printing plate has been exchanged correctly has been checked by visually picking up the printed newspaper coming out of the folding machine and visually confirming it by an operator. Since printing plates are changed, printing takes a lot of time and lots of waste from the start of printing to the completion of confirmation, and it is not possible to make a reliable determination, so defective paper may be delivered to the user. there were

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to reduce the amount of waste paper generated after plate replacement, and to easily detect misprinted newspaper plates such as maintenance. The point is to provide a device.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, an apparatus for detecting improper mounting of a newspaper printing plate according to the present invention comprises: an image pickup device for picking up characters, symbols or figures of a printed material of a rotary press; A position control device of the imaging device, an image processing device for identifying an image signal of a character, a symbol, or a figure captured by the imaging device; and an identification signal of print information recognized by the image processing device, which is input to a storage device in advance. A determination device that determines whether the printing plate has been correctly set on a predetermined roll of a predetermined printing unit by comparing the printing information given by the printing device or the printing information given from the upstream control device, and a display that displays and warns the result. A warning device;

[0008] The newspaper printing plate erroneous mounting detection device of the present invention is configured as described above, and the position control device of the image pickup device controls one or more image pickup devices installed on the printed material course, and controls the position on the printed material. Read newspaper information (print information), and send the obtained image signal to the image processing device.
Here, the image signal is identified, and an identification signal of the identified print information (date, local edition, etc.) is sent to the determination device, where the identification signal is input to a storage device in advance or given from the upstream control device. A comparison is made with the printing information to determine whether the printing plate has been correctly set on a predetermined roll of a predetermined printing unit, and the result is displayed on a display / warning device.

[0008]

FIG. 1 is a block diagram showing an apparatus for detecting improper mounting of a newspaper printing plate according to the present invention.
In FIG. 1, reference numerals 1 and 2 denote one or more CCDs for picking up characters, symbols, and figures of printed matter mounted near guide rollers of a printed matter course for each printing unit of a newspaper rotary printing press. With the camera (imaging device),
D cameras 1 and 2 are installed in a printed matter course. Reference numeral 5 denotes an image processing device for identifying character, symbol, and graphic image signals from the CCD cameras 1 and 2, and reference numeral 6 denotes an image for identifying character, symbol, and graphic image signals captured by the CCD cameras 1 and 2. The processing device and an identification signal such as a plate number recognized by the image processing device are compared with printing information given in advance from the upstream control device 7 to check whether the printing plate has been correctly set on a predetermined roll of a predetermined printing unit. A judging device for judging whether or not the judgment is made is a display / warning device for displaying / warning the judgment result.

Next, the operation of the newspaper printing plate erroneous mounting detecting apparatus shown in FIG. 1 will be described in detail. While the timing of the CCD camera 1 installed near the guide roller 10 is controlled by the encoder 4, the printing information of the printed matter is read, and the image signal obtained at that time is sent to the image processing device 5, where the image from the CCD camera 1 is sent. A signal is identified, and an identification signal of the identified print information is sent to the determination device 6, where the identification signal is compared with printing information given in advance from the upstream control device 7 to determine a predetermined roll of a predetermined printing unit. Judge whether the printing plate has been set correctly and display the result.
It is displayed on the warning device 8. The above operation is performed by the CCD camera 2
But the same is done.

[0010]

According to the present invention, there is provided an apparatus for detecting improper mounting of a newspaper printing plate, as described above, an image pickup device for picking up characters, symbols or figures of a printed matter of a newspaper rotary printing press, a position control device for the image pickup device, An image processing apparatus for identifying an image signal of a character, a symbol, or a figure captured by an imaging apparatus; and an identification signal of print information recognized by the image processing apparatus input to a storage device in advance or given from an upstream control device. A determination device that determines whether the printing plate is correctly set on a predetermined roll of a predetermined printing unit by comparing the printing information with the printing information, and a display and warning device that displays and warns the result. Can quickly recognize whether or not the printing plate has been correctly set on the predetermined roll of the printing unit, and has the effect of reducing the waste paper generated after the printing plate replacement.

[Brief description of the drawings]

FIG. 1 is a conceptual diagram showing one embodiment of a newspaper printing plate erroneous mounting detection device according to the present invention.

[Explanation of symbols]

 1, 2 imaging device 3 position control device 4 encoder 5 image processing device 6 judgment device 7 upstream control device 8 display / warning device 10 guide roller 11 printed matter

Claims (1)

(57) [Claims] 1. An image pickup apparatus for picking up a character, a symbol or a figure of a printed matter of a newspaper rotary printing press, a position control device of the image pickup apparatus, and an image signal of a character, a sign or a figure picked up by the image pickup apparatus. A predetermined roll of a predetermined printing unit by comparing an image processing apparatus to be executed with a signal obtained by inputting an identification signal of print information recognized by the image processing apparatus into a storage device in advance or printing information given from an upstream control device. And a display / warning device for displaying / warning the result of the determination.