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Intelligent photoelectric off-paper detection method and device

A photoelectric detection and photoelectric interruption technology, which is applied in measuring devices, material analysis through optical means, printing, etc., can solve problems such as troublesome installation and focusing, work failure, and difficulty for operators to know, and achieve easy installation and focusing, High reliability, simple and feasible detection method

Active Publication Date: 2006-09-27
GOSS GRAPHIC PRINTING SYST CHINA +1
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Problems solved by technology

The through-beam photoelectric paper break detection can not be affected by color, but it is troublesome to install and focus, and once the ink of the printing machine sprays the emitter or receiver, it will fail to work, and it is not easy for the operator to know
The reflective photoelectric paper break detection method is to send photoelectric signals to the printed product, and judge the paper break situation through the received signal. When the printing is completely black or some dark color advertisements, there will be no detection or false detection, and it will not work normally. detection blind zone
Once the paper of the newspaper printing machine breaks, it will cause serious winding phenomenon, which will damage the blanket at least, and damage the machine parts at worst

Method used

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Embodiment Construction

[0013] An intelligent photoelectric paper break detection method is to input the host printing speed pulse signal and the photoelectric reflection pulse signal facing the newspaper into the microprocessor, and through the operation of the microprocessor, when the host printing speed pulse signal turns no more than ten sheets Under the newspaper situation, the microprocessor has not received the photoelectric reflection pulse signal, and then the microprocessor sends a paper breaking signal and a shutdown signal.

[0014] This is because: see figure 1 , there is a white border 14 in the non-printing area of ​​the newspaper 11, and there is a white border 14 between the newspapers 11 and the newspapers 11. For a newspaper 11, after the paper 15 passes through the printing cylinder 10, because the printing cylinder 10 has a cylinder recess 13, that is, a non-printing area, the newspaper 11 and the white edge 14 of the printing pattern are left on the paper 15 It exists, so even ...

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Abstract

The present invention relates to photoelectronic paper break detecting method and device in printing technology. The intelligent photoelectronic paper break detecting method is that the printing speed pulse signal and the photoelectronic reflecting pulse signal of the printer are fed to the microprocessor for operation, and in case that after the printing speed pulse signal shows four sheets of newspaper turned without photoelectronic reflecting pulse signal fed to the microprocessor, the microprocessor sends out paper break signal and stop signal. The detection method is simple and feasible, and has no detection blind area, and reflecting photoelectronic detection device has the features of easy installation and focusing, being intelligent and high reliability.

Description

(1) Technical field [0001] The invention relates to a method and a device for detecting photoelectric paper breaking in a printing machine. (2) Background technology [0002] Existing paper break detection methods for newspaper printing machines include mechanical contact and non-contact methods, and the non-contact methods include through-beam photoelectric paper break detection methods and reflective photoelectric paper break detection methods. Through-beam photoelectric paper break detection is not affected by color, but it is troublesome to install and focus, and once the ink of the printing machine sprays the emitter or receiver, it will fail to work, and it is not easy for the operator to know. The reflective photoelectric paper break detection method is to send photoelectric signals to the printed product, and judge the paper break situation through the received signal. When the printing is completely black or some dark color advertisements, there will be no detection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41F33/04B41F33/18G01N21/84
Inventor 俞庆建刘智涌
Owner GOSS GRAPHIC PRINTING SYST CHINA
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