Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...
Reexamination Certificate
2005-04-26
2005-04-26
Dote, Janis L. (Department: 1756)
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
Post imaging process, finishing, or perfecting composition...
C430S049700, C106S002000
Reexamination Certificate
active
06884557
ABSTRACT:
A desensitizing treatment liquid for offset printing plates, which contains a compound represented by formula (I)wherein φ represents —PO3H2, —OPO3H2, or the salt thereof and R1represents an organic residue which may have a substituent. The desensitizing treatment liquid gives no problems to environmental pollution, is stable to the long-period storage and the continuous use, can shorten the etching treatment time, and is excellent in the desensitizing treatment ability as well as can provide an offset printing plate having a good reproducibility of highly minute images of a middle tone, screen tint, etc., and capable of printing without forming scumming at the non-image area.
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US Patent & Trademark Office English-Language Translation (PTO97-4268) of French Patent 2,127,633 (pub. Oct. 1972) .
Itakura Ryosuke
Kasai Seishi
Kato Eiichi
Sorori Tadahiro
Dote Janis L.
Fuji Photo Film Co. , Ltd.
Sughrue & Mion, PLLC
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