Presensitized plate

Details Presensitized plate Presensitized plate

2006-11-07

2006-11-07

Hamilton, Cynthia (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

C430S278100, C430S276100, C430S944000, C430S302000

Reexamination Certificate

active

07132212

ABSTRACT:
A presensitized plate comprising a support for a lithographic printing plate including an anodized layer formed on an aluminum plate and a recording layer recordable by infrared laser exposure on the support, wherein in a section of the anodized layer after the recording layer is provided, an atomicity ratio of carbon to aluminum (C/Al) represented by Auger Electron Spectroscopic analysis is 1.0 or less. In the case of being used as an on-machine development type, it exhibits a good on-machine development characteristic, a high sensitivity, a high press life, and high scum resistance during printing and while left (ink discharging). In the case of being used as a conventional thermal positive or negative working type, it exhibits an efficient use of heat for image formation, a high sensitivity, a high press life, and a slight possibility of scum occurrence at non-image areas.

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Bubert et al, “Surface and Thin-Film Analysis, 2. Electron Detection”, Ullmann's Encyclopedia of Industrial Chemistry, Wiley-VCH Verlag GmbH & Co. KGaA, Article online posting date Jan. 15, 2002, 36 pages and one page of Figure 21showing KLL.

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