Dual Wavelength light-emitting source for chromatography printing register sensor

A technology of color register printing and sensor, which is applied in the general parts of printing machinery, printing, printing machines, etc., can solve the problems of unstable plate and the inability of plate sensor to be flexible, achieves strong practicability and improves the scope of application Effect

Inactive Publication Date: 2008-03-05
维伦科技股份有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The purpose of the present invention is to provide a dual-wavelength light source applied to the registration sensor of color registration printing, which solves the problem of unstable registration of the prior art and the inability of the registration sensor to detect flexibly, conveniently and practically. question

Method used

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  • Dual Wavelength light-emitting source for chromatography printing register sensor
  • Dual Wavelength light-emitting source for chromatography printing register sensor

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Embodiment Construction

[0014] As shown in accompanying drawings 1 to 4, the plate alignment sensor 1 of the present invention is mainly composed of a pair of LED lights 10, 11 with a distance of 20mm and their associated control circuits. The first LED light with dual light sources 10 An aperture pad 100, 110 is provided at the front end of the second dual light source LED lamp 11 to prevent the two groups of light from interfering with each other. Convex lenses 12, 13 are respectively provided in front of the aperture pad 100, 110, and the inside of the plate alignment sensor 1 A single beam splitter 14 is placed obliquely at an angle of 45 degrees in the central area. The beam splitter 14 can reflect the dual light sources 2 emitted by the first and second dual light source LED lamps 10 and 11 to the external lens of the plate registration sensor 1 After 16 and 17, a light-absorbing sheet 15 is arranged on the upper edge of the plate-aligning sensor 1 to prevent the double light source 2 emitted by...

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Abstract

The invention is about the two wavelength primary luminous used for the chromaticity printing register sensor. The sensor is made up of a fixed distance of two luminous LED lights and the diaphragm cushion. The two luminous sources are reflected to the external lens by the convex glass and the single spectroscopical sheet. When the two light sources eject to the color code respectively, the reflectance ratio difference will be produced between the color marker and the ground color paper, the reflex light ejects to the detecting unit through the external lens and detected by the detecting circuit. It can avoid not detecting the special color using the single light, so it can detect the any color.

Description

technical field [0001] The present invention relates to printing, in particular to a dual-wavelength light source applied to a registration sensor for color registration, especially a technology for a registration sensor with high sensitivity to color marks during registration printing. Background technique [0002] As we all know, CMYB is the basic color in color printing, where C is blue (Cyan), M is red (Magenta), Y is yellow (Yellow), and B is black (Black). If it is overprinted on the previous printing pattern, the function of the registration sensor is to detect the color mark of the previous printing and the color mark of this printing at the same time, and transmit the electrical signal between the two marks To the controller of the printing machine to convert the error between the distance between the two marks and the industrial standard of 20mm, so when we choose the spectrum of the light source used in the plate sensor, we certainly require this A light source e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F33/00B41F13/12
Inventor 刘思贤刘思麟刘文启
Owner 维伦科技股份有限公司
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