Title:
ORIGINAL PLATE FOR LITHOGRAPHY OF ELECTROPHOTOGRAPHIC TYPE
Document Type and Number:
WIPO Patent Application WO/1993/000615
Kind Code:
A1
Abstract:
The constitution and composition of a back layer of the original plate is improved, and thereby printing on a large number of sheets can be executed without scumming and ruck by using the original plate. The original plate has at least a photo conductive layer on one side of the support of the plate and a back layer on the other side, the back layer comprising an outermost layer containing hydrophilic macromolecules and an inner layer whose water absorption degree is below 25 g/cm2 (45-minute value) by Cobb test. By this constitution since the water resistance and scumming resistance are high, printing on a number of sheets can be achieved without wrinkle and with high printing quality. The original plate can be effectively adapted not only to electrophotographic platemaking by ordinary development but to the one by direct-charging development.
Inventors:
NAKAYAMA TAKAO (JP)
DAN SHIGEYUKI (JP)
SERA HIDEFUMI (JP)
DAN SHIGEYUKI (JP)
SERA HIDEFUMI (JP)
Application Number:
PCT/JP1992/000815
Publication Date:
January 07, 1993
Filing Date:
June 26, 1992
Export Citation:
Assignee:
FUJI PHOTO FILM CO LTD (JP)
International Classes:
G03G5/14; G03G5/10; G03G13/28; G03G15/28; (IPC1-7): G03G13/28
Foreign References:
| JPS522322B2 | 1977-01-21 | |||
| JPS6246854B2 | 1987-10-05 | |||
| JPS57197194A | 1982-12-03 | |||
| JPS5958443A | 1984-04-04 | |||
| JPS59170860A | 1984-09-27 |
Other References:
See also references of EP 0546195A4
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