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Treatment fluid for removing black defect in plate or film and treatment method

A black defect and treatment liquid technology, applied in the field of masks, can solve problems such as inability to remove, scratches on product surfaces, and scratches on graphics, so as to reduce the scrap rate of products and overcome scratches.

Active Publication Date: 2011-07-27
深圳清溢光电股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, manual repairing methods are often used in the industry to remove such defects (such as using a scraper to manually scrape black spots under a microscope). It is difficult to clean after contamination; and such defects are restricted by the size, shape, and position of the defect under the condition of manual scraper repair. When the defect is small or exceeds the limit of manual and tool repair capabilities, it cannot be removed, or after manual scraping fails. It is easy to cause the product to be scrapped, and the product needs to be remade

Method used

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  • Treatment fluid for removing black defect in plate or film and treatment method
  • Treatment fluid for removing black defect in plate or film and treatment method
  • Treatment fluid for removing black defect in plate or film and treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Get concentration and be 6.7 grams of nitric acid (the effective content of nitric acid is 5 grams, water 1.7 grams), potassium dichromate 5 grams and join in 88.3 grams of deionized water, stir evenly, make nitric acid-dichromate cleaning solution (the first medicament); then take 5 grams of thiourea and add it to 95 grams of deionized water to prepare a reducing agent solution (second medicament).

[0039] Take the dry plate / film with black spot defects, find the black spot defects on the film surface of the dry plate, mark the position of the defect on the back of the dry plate, and stick a protective film on the film surface to protect the effective graphics in the graphic area; Then prepare a dust-free cloth, deionized water, absolute ethanol, cotton swabs, etc.; use a dust-free cloth dipped in absolute ethanol to wipe off the surface of the black spot defect and the surface near the defect, and then use a cotton swab dipped in water to remove the black spot defect ...

Embodiment 2

[0043] Take 20.5 grams of sulfuric acid with a concentration of 98% (the effective content of sulfuric acid is 20 grams and 0.5 grams of water), and 20 grams of sodium dichromate are added to 59.5 grams of deionized water, and stirred evenly to obtain a sulfuric acid-dichromate cleaning solution (the first medicament); then get 20 grams of sodium oxide and add it to 80 grams of deionized water to prepare a reducing agent solution (the second medicament).

[0044] Take the dry plate / film with black spot defects, find the black spot defects on the film surface of the dry plate, mark the position of the defect on the back of the dry plate, and stick a protective film on the film surface to protect the effective graphics in the graphic area; Then prepare a dust-free cloth, deionized water, absolute ethanol, cotton swabs, etc.; use a dust-free cloth dipped in absolute ethanol to wipe off the surface of the black spot defect and the surface near the defect, and then use a cotton swab...

Embodiment 3

[0047] Get concentration and be 50 grams of hydrochloric acid (the effective content of hydrochloric acid is 10 grams, water 40 grams), lithium dichromate 10 grams and join in 40 grams of deionized water, stir evenly, make hydrochloric acid-dichromate cleaning solution (the first medicament); then get 10 grams of sulfur dioxide and add it to 90 grams of deionized water to prepare a reducing agent solution (the second medicament).

[0048] Take the dry plate / film with black spot defects, find the black spot defects on the film surface of the dry plate, mark the position of the defect on the back of the dry plate, and stick a protective film on the film surface to protect the effective graphics in the graphic area; Then prepare a dust-free cloth, deionized water, absolute ethanol, cotton swabs, etc.; use a dust-free cloth dipped in absolute ethanol to wipe off the surface of the black spot defect and the surface near the defect, and then use a cotton swab dipped in water to remov...

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Abstract

The invention relates to a treating liquid used for removing dark-point defects in a film or a dry plate. The treating liquid comprises a first reagent and a second reagent. The first reagent contains the following ingredients by weight percentages: 10-15% of inorganic acids, 10-15% of bichromate and 70-80% of deionized water; the second reagent contains 5-20% of a reductant and 80-95% of the deionized water by weight percentages. The invention also relates to a method for treating the dark-point defects in the film or the dry plate by the treating liquid. The treating liquid and the method provided in the invention are capable of removing dark-point defects in the dry plate or the film in a short time, without affecting the graphic layer or the emulsion layer of the dry plate / film, overcome the disadvantages of manual handling such as surface scratch of the dry plate or the film, graphic abnormity, surface contamination and the like, and reduce the rejection rate of the dry plate or the film resulting from the defects beyond repair or failure of manual repair.

Description

【Technical field】 [0001] The invention relates to the mask plate industry, in particular to a treatment solution for removing black defects in a dry plate or film and a treatment method thereof. 【Background technique】 [0002] In the mask industry, the ultrafine silver salt glass plate (such as: Emulsion-ultrafine silver salt dry plate) for recording graphics and text information and the soft silver salt film (film) for recording graphics and text information are often used. ), during the production process of dry plate and film, due to the influence of factors such as developer solution, material surface, developer tank being polluted or developer solution expired, filter device failure, too many developed products, abnormal production equipment, etc., the graphic area is made of ferrous metal Black spots formed by the polymerization of silver ions or the accumulation of strong oxidative residues of other metals are also called black defects. These black spot defects are d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03C11/06G03C1/33G03C11/00G03C1/06
Inventor 郝明毅侯广杰
Owner 深圳清溢光电股份有限公司