Photoresin relief printing plate

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

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430273, 430306, 430502, 101395, 101401, 1014011, G03C 1492

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active

052524280

ABSTRACT:
A photoresin relief printing plate comprising a support and a photoresin relief portion disposed thereon, said relief portion having a thickness of not greater than 8 mm and comprising an upper photoresin layer and a lower photoresin layer, wherein said upper photoresin layer has a thickness of at least 2 .mu.m and a Young's modulus of not greater than 650 kg/cm.sup.2 and said lower photoresin layer has a thickness which is greater than the Young's modulus of said upper photoresin layer and a thickness which is greater than the Young's modulus of said upper photoresin layer. The photoresin relief printing plate exhibits not only excellent inking and ink transferability even in solid images, but also excellently less broadening of printed images and excellent image reproducibility, even if the printing operation is performed using an ordinary relief printing machine having poor machine accuracy.

REFERENCES:
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patent: 3912516 (1975-10-01), Recchia et al.
patent: 3948665 (1976-04-01), Richter et al.
patent: 3960572 (1976-06-01), Ibata et al.
patent: 4192684 (1989-03-01), Gensho et al.
patent: 4264705 (1981-04-01), Allen
Partial translation of Japanese Patent Application Laid-Open Specification No. 62-124559.

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