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Thermosensitive CTP plate production technology

A production process, heat-sensitive technology, applied in the field of printing plates, can solve the problems of CTP plate dot reproducibility, photosensitive development characteristics, poor printing force, oxide film compactness, poor thickness and porosity, etc., to achieve Improve dot reproducibility and printing durability, improve storage performance and printing durability, and prevent staining

Inactive Publication Date: 2018-08-07
上海宝士嘉印刷器材有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although the anodic oxidation treatment process adopted in the prior art can realize the formation of an oxide film on the surface of the aluminum plate, the properties such as the compactness, thickness and porosity of the oxide film formed by it are relatively poor, and the dot reproducibility and photosensitivity of the obtained CTP plate are poor. Poor performance, development characteristics and printing durability

Method used

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  • Thermosensitive CTP plate production technology
  • Thermosensitive CTP plate production technology
  • Thermosensitive CTP plate production technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Example 1: Such as figure 1 As shown, a heat-sensitive CTP plate production process is prepared through the following steps:

[0047] (1) Degreasing: mix sodium hydroxide, sodium phosphate, corrosion inhibitor and water into a solution in proportion, and spray the aluminum substrate to remove oil, sodium hydroxide, sodium phosphate, and corrosion inhibitor in parts by weight The ratio is 2:1:1, the solution concentration is 40g / L, the solution temperature is 56°C, and the oil removal time is 15s;

[0048] (2) Washing: Use pure water at room temperature to spray the degreasing aluminum plate substrate with water for 6s;

[0049] (3) Pickling: The sulfuric acid is configured as an aqueous solution with a mass concentration of 80g / L, and the aluminum plate substrate after washing is sprayed and pickled, and the pickling time is 6s;

[0050] (4) Washing: Use pure water at room temperature to spray the acid-washed aluminum substrate with water for 6 seconds;

[0051] (5) Electrolysi...

Embodiment 2

[0065] Embodiment 2: A heat-sensitive CTP plate production process, which is different from Embodiment 1 in that the concentration of the solution in step (1) is 42 g / L.

Embodiment 3

[0066] Embodiment 3: A heat-sensitive CTP plate production process, which is different from Embodiment 1 in that the concentration of the solution in step (1) is 45 g / L.

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Abstract

The invention discloses a thermosensitive CTP plate production technology, and relates to the technical field of printing plates. The technology solves the problems that the dot reproducibility, the sensitiveness, the developing characteristic and the printing durability of an existing CTP plate are poor. The technology comprises the following steps of (1) removing oil; (2) carrying out water washing; (3) carrying out acid pickling; (4) carrying out water washing; (5) carrying out electrolysis; (6) carrying out water washing; (7) removing ash; (8) carrying out water washing; (9) carrying out acid pickling; (10) carrying out oxidizing; (11) carrying out water washing; (12) carrying out hole sealing; (13) carrying out water washing; (14) carrying out drying; (15) carrying out gluing; (17) carrying out drying; and (17) carrying out slitting. According to the technology, the technological steps and the parameters are adjusted, so that the dot reproducibility and the printing durability ofthe CTP plate can be improved, sand meshes can be more uniform and compact, a layer of compact and uniform oxidation film can be conveniently formed on the surface of an aluminum plate base material in the oxidation process, and therefore the storage performance and the printing durability of the plate can be improved; and the aluminum plate base material is white-bright, clean and free of dirt, and the defects such as the dirt and dark lines can be avoided

Description

Technical field [0001] The invention relates to the technical field of printing plate materials, more specifically, it relates to a heat-sensitive CTP plate production process. Background technique [0002] CTP (Computer to Plate) technology is a digital direct plate-making technology that appeared in the 1990s. It is a technology in which a computer copies graphic information to a plate through a laser plate making machine. This technical equipment consists of a pre-press system and a laser plate making machine, collectively referred to as a computer direct plate making system, that is, a CTP system. The system does not require the laser imagesetter to output film, imposition, copying, and printing. CTP technology has been introduced to our country for several years and has made considerable progress, and now it has gradually turned from popularization to maturity. From a technical point of view, CTP includes photosensitive CTP and thermal CTP, among which thermal CTP has the ...

Claims

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Application Information

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IPC IPC(8): C25D11/16C25D11/08C25D11/24G03F7/00
CPCC25D11/16C25D11/08C25D11/246G03F7/00
Inventor 黄祖成
Owner 上海宝士嘉印刷器材有限公司
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