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Thermal sensitive imaging composition for direct platemaking by positive thermal sensitive computer

An imaging composition and heat-sensitive technology, which is applied in photothermographic systems, copying/marking methods, printing, etc., can solve the problems of affecting application, affecting printing force, and poor resistance to ink solvents

Inactive Publication Date: 2005-07-06
TAIXING CITY ORIENT IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unfortunately, 3M’s invention has two serious problems: ① The product is a liquid with extremely low viscosity, and the strength of the film layer in the photosensitive composition of the PS plate decreases, which seriously affects the printing resistance
In addition, its ability to resist ink solvents is also very poor; ②This compound is stored at room temperature, especially when it encounters light and moisture, it will accelerate the decomposition, which brings headaches to the application of both PS plates and photoresists The problem
The inventor of the present invention once used it in the heat-sensitive CTP plate material formula as the anti-solution-promoting compound in the heat-sensitive imaging composition, but also affected the application because of the above-mentioned defects

Method used

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  • Thermal sensitive imaging composition for direct platemaking by positive thermal sensitive computer
  • Thermal sensitive imaging composition for direct platemaking by positive thermal sensitive computer
  • Thermal sensitive imaging composition for direct platemaking by positive thermal sensitive computer

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preparation example Construction

[0027] For the preparation methods of the above compounds, please refer to the Chinese patent application 01123686.8 submitted by the applicant of the present application on September 5, 2001, and the contents related to the compounds and their preparation in this application are hereby incorporated by reference.

[0028] The compound of general formula I or II is used in the thermal imaging formulation of the thermal CTP plate material of the present invention as a dissolution-inhibiting compound, and generally has a dissolution-inhibiting property, and some have shown very good solubility-inhibiting property, The ratio of film-forming resin / solution-inhibiting-solution-promoting compound can be as high as 8:1, and the developing performance and other imaging properties are good. The changes before and after imaging are shown in the following formula:

[0029]

[0030]

[0031]

[0032] Repellant Solvent Solubilizer

[0033] Insoluble in dilute lye Easily soluble in d...

Embodiment 1

[0101] Thermal imaging composition formula: 1.55g BTB-24 phenolic resin (produced by Beijing Normal University Chemical Experimental Factory, the same below), 0.25g solution-inhibiting and promoting-solubility compound P4, 0.1g acid-producing compound triazine B (Beijing Normal University Chemical Experiment factory production, the same below), 0.1g infrared absorbing dye (830nm maximum absorption) HD-4 (product of Nippon Pigment Co., Ltd., the same below), 1ml 10% alkaline brilliant blue ethanol solution (product of Tianjin Dyestuff Factory, the same below) , 10ml methyl ethyl ketone. After the above formula is dissolved, filter it and apply it on the aluminum plate base for positive PS plate, the coating amount is 70g·m -2 (solid amount), and dried at 90° C. for 3 minutes.

[0102] Infrared laser scanning imaging: Scan the above-mentioned dried plate on a self-made infrared laser scanning device, the laser output power to the plate is 20mW, the spot diameter is 50 microns, ...

Embodiment 2

[0105] Thermal imaging composition formula: 1.55g BTB-21 phenolic resin, 0.25g solubility-inhibiting and solubility-promoting compound P4, 0.1g acid-generating compound triazine B, 0.1g infrared absorbing dye (maximum absorption at 830nm) HD-4, 1ml 10% Basic brilliant blue ethanol solution, 10ml methyl ethyl ketone. After the above formula is dissolved, filter it and apply it on the aluminum plate base for positive PS plate, the coating amount is 70g·m -2 (solid amount), and dried at 90° C. for 3 minutes.

[0106] Infrared laser scanning imaging: Scan the above-mentioned dried plate on the thermal CTP experimental plate-making prototype of Peking University Huatong Company, the laser output power to the plate is 40mW, the spot diameter is 30 microns, and the scanning speed is 10cm s -1 .

[0107] Development: Kodak thermal CTP plate developer with a dilution ratio of 1:5, develop at 25°C for 35 seconds, and obtain a clear positive image.

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Abstract

Active ester ether obtained by adding 2,2-diphenyl-2-phenol acetic acid derivatives as intermediates of solvent-inhibiting and solubilizing compounds to vinyl ethers, dihydropyrans, etc. Compounds, or lactone compounds containing active ethers, as a solution-inhibiting and solubilizing compound with high solubility-resistance before acidolysis and highly solubilization after acidolysis, and novolac resins and infrared-absorbing dyes with acidolysis-promoting properties 1. The pyrolysis-type acid-generating source is blended in an appropriate proportion to prepare a thermosensitive imaging composition. A series of properties such as sensitivity, resolution, developing latitude and image contrast of the composition are superior to the thermosensitive imaging composition of conventional positive thermosensitive CTP plates based on physical changes. In order to further improve its solubility-inhibiting and solubility-promoting properties, a solution-inhibiting and solubility-promoting compound synthesized from the above-mentioned intermediate and diazonaquinone sulfonyl chloride can be added.

Description

technical field [0001] The technical field of the present invention is thermal computer-to-plate (Computer to plate, hereinafter referred to as "CTP") plate heat-sensitive formulation in the new technology field of photothermal function for information recording materials, that is, thermal imaging for positive thermal CTP plates combination. Specifically, the present invention relates to a novel thermosensitive imaging composition for positive thermosensitive CTP plates, which comprises a film-forming resin, a solution-inhibiting and solubility-promoting component, an infrared absorbing dye and a photothermal acid-generating source compound. The solution of the composition is coated on the aluminum plate base for lithographic printing, and after the film is dried, it is scanned by an infrared laser, and the acid generated by the photothermal acid-generating source compound is used to make the highly acidolytic active dissolution-promoting component Decomposition, from highly ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41M5/00G03C1/498
Inventor 邹应全余尚先施致雄
Owner TAIXING CITY ORIENT IND
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