Radiation imagery chemistry: process – composition – or product th – Silver halide colloid tanning process – composition – or product
Patent
1991-05-09
1993-05-18
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Silver halide colloid tanning process, composition, or product
430598, 430436, 430487, G03C 106
Patent
active
052120457
ABSTRACT:
Disclosed is a method for image formation which comprises developing a silver halide photographic photosensitive material in the presence of a compound represented by the following formula [I] or [II]: ##STR1## wherein Ar represents an aryl group, R.sub.1, R.sub.2 and R.sub.3 which may be identical or different each represents a hydrogen atom, an alkyl group, an aralkyl group, an aryl group, or a heterocyclic group, with a proviso that they cannot be simultaneously hydrogen atoms, R.sub.1 and R.sub.2 may link to each other to form a ring, and at least one of R.sub.1, R.sub.2 and R.sub.3 has at least one hydroxyl group as a substituent, ##STR2## wherein Ar.sub.1 and Ar.sub.2 each represents a divalent aromatic group, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a hydrogen atom, an alkyl group, an aryl group or a heterocyclic group, R.sub. and R.sub.2 may link to each other to form a ring and R.sub.3 and R.sub.4 may link to each other to form a ring, L represents a divalent linkage group, and n represents 0 or 1.
REFERENCES:
patent: 2419975 (1947-05-01), Trivelli et al.
patent: 3227552 (1966-01-01), Whitmore
patent: 3386831 (1963-06-01), Honig et al.
patent: 3730727 (1973-05-01), Olivares et al.
patent: 4168977 (1979-09-01), Takada et al.
patent: 4224401 (1980-09-01), Takada et al.
patent: 4241164 (1980-12-01), Mifune et al.
patent: 4243739 (1981-01-01), Mifune et al.
patent: 4269929 (1981-05-01), Nothnagle
patent: 4272606 (1981-06-01), Mifune et al.
patent: 4272614 (1981-06-01), Mifune et al.
patent: 4323643 (1982-04-01), Mifune et al.
patent: 4971890 (1990-11-01), Okada et al.
patent: 4978602 (1990-12-01), Fujita et al.
patent: 5026622 (1991-06-01), Yamada et al.
Koga Masao
Ohashi Minoru
Bowers Jr. Charles L.
Mitsubishi Paper Mills Limited
Neville Thomas R.
LandOfFree
Method for image formation does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for image formation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for image formation will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-803531