Laser direct plate marking device for plane screen print plate and device

Abstract

The invention discloses a laser direct plate marking device for a plane screen print plate and device. The device comprises a screen frame for screen printing, a screen mesh stretched on the screen frame for screen printing, wherein the bottom of the screen mesh is coated with a photosensitive material coating, an optical component arranged below the screen frame for screen printing and used for performing exposure treatment on the photosensitive material coating, a scanning trolley for driving the optical component to reciprocate on the horizontal surface, and a longitudinal moving member for driving the optical component to shuttle on the horizontal surface; and the optical component comprises a plurality of lasers arranged on the same horizontal surfaces, the plurality of lasers are arranged on the same straight line parallel to a longitudinal central line of a rectangular screen frame from front to the back. The method comprises the following steps of confirming a control parameter of a mechanical structure, confirming a control parameter of a laser, and exposure imaging. The device disclosed by the invention is reasonable in design, low in investment cost, simple for use and operation, good in use effect, and wide in application range, and can be used for finishing the print plate manufacturing process of a screen frame in different sizes.

Description

technical field [0001] The invention relates to a method for making a screen printing screen plate, in particular to a laser direct plate making device and method for a flat screen printing screen plate. Background technique [0002] In the field of modern printing technology, screen printing and offset printing, letterpress printing and gravure printing are known as the four major printing methods. Among them, screen printing has the strongest adaptability and the widest range of applications. After entering the 21st century, the advent of computer-to-plate (CTP: Computer to Plate) technology has brought about a digital revolution in the contemporary lithographic printing industry. However, the direct plate-making technology in the field of flat screen printing, that is, computer-to-screen (CTS: Computer to screen) has just entered its infancy. [0003] At present, planar screen printing plate-making still uses the method of photographic film to copy photosensitive glue. ...

AI Technical Summary

Problems solved by technology

[0009] First, poor image accuracy: Since the traditional screen printing plate-making method is completed by exposing and copying the pattern negative film and the photosensitive adhesive, the image details will be lost during the copying process, and the image accuracy is lower than the original. It is especially obvious in the printing process of glue;

[0010] Second, the cost of consumables is high: the traditional screen printing plate-making method needs to use an phototypesetter to make negatives, multi-color printing requires multiple negatives, and the negatives are discarded after printing. Compared with direct plate-making, the cost of consumables is higher;

[0011] Third, the plate-making efficiency is low: the traditional screen printing plate-making process needs to first make a pattern negative, and then the plate-making process cycle is long, and the plate-making efficiency is low;

[0012] Fourth, pollute the environment: the negative film output by the imagesetter in traditional screen printing plate making is a silver salt photosensitive film, which itself contains a large amount of silver and other chemical materials. After exposure, chemical development and fixing are required. These films and chemical preparations are used Then it is discarded and dumped, thus causing considerable environmental pollution;

[0013] Fifth, high energy consumption: The light source of the plate-making machine used in traditional screen printing plate making is potassium iodine lamp. Due to the low utilization rate of light energy, its power is basically 1000 watts to 5000 watts, while the power of semiconductor lasers is only several hundred milliwatts, and the printing machine also needs a high-power vacuum pump

In terms of long-term use, traditional screen printing plate-making consumes a lot of energy

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