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What is aluminum printing CTP plate?

Mar. 06, 2025

A CTP plate is a plate used in the offset printing process, where a laser is used to transfer the image from a digital file directly to the plate. Aluminum CTP plates are made exclusively from aluminum and are known for their durability, stability and high-quality printing performance.

Aluminum printing CTP plates

Aluminum printing CTP plates are designed to meet the high demands of modern printing. The core material aluminum combines lightness, strength and excellent thermal conductivity, making it ideal for precise image reproduction. These boards usually have a multi-layer structure, including the following layers:

The granulation and anodizing processes are critical to improving the performance of the board. Granulation is usually achieved by mechanical or electrochemical methods, creating a rough surface that enhances ink adhesion. Anodizing involves an electrochemical process that increases the natural oxide layer of aluminum, providing additional protection and extending the life of the sheet.

The quantitative indicators of aluminum substrates for CTP and PS mainly include the chemical composition of the aluminum substrate, shape and dimensional accuracy, mechanical properties at room temperature, unevenness and surface roughness, etc.

The alloys currently used in the CTP version are mainly 1050, 1060, 1070 and self-made alloy grades adjusted with trace elements on this basis, such as 1052, etc., which are consistent with the alloy grades used for the aluminum substrate of the PS version.

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Advantages of aluminum printing CTP plates

Aluminum printing CTP plate production process

The production of aluminum printed CTP plates involves several detailed steps:

Aluminum-printed CTP plates represent a significant advancement in printing technology, with numerous advantages that increase print quality, efficiency and sustainability.

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