Determination of the Best Image Parameters in CTP Output Device

Abstract:

The exposure quality was influenced by focal length, zoom, irradiating power and cylinder speed of laser head in computer-to-plate (CTP) process. This paper determined the most optimal parameters which used screen thermal sensitive device PT-R4100 by changing the focal length, zoom, irradiating power and cylinder speed of laser head. Adjusted the setting parameters in order to divide the CTP plate into 13 test strips and each strip was divided into 13 small test pieces. This method could determine the most clear image teat strip by observing and measuring color and density of the test strips or test pieces, and then calculated the most optimal parameters. The results showed that this method could determine the parameters quickly and accurately. The most optimal parameters of focal length, zoom, irradiating power and cylinder speed in CTP process were 1500 puls, 6700 puls, 90%, 600r/min respectively。

• Periodical: Advanced Materials Research (Volume 174)
• Pages: 167-170
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.174.167
• Online since: December 2010
• Authors: Wei Chen, You Ming Li
• Keywords: Circular Translational Polishing (CTP), Cylinder Speed, Focal Length, Irradiating Power, Test, Zoom

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