Patent US1490201A successfully refreshed from Google Patents.
Patent FR676431A successfully refreshed from Google Patents.
Patent US5024932A successfully refreshed from Google Patents.
← Back to Patent Explorer
US5024932A Expired / Lapsed US ⏱️ 0.0 years remaining

Light-sensitive silver halide photographic material

Assignee: Konica Minolta Inc
•
Filing: 1990-02-26
•
Granted: 1991-06-18
•
Expires: 2010-02-26
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A light-sensitive silver halide photographic material having a support and, provided thereon, photographic component layers including at least one light-sensitive silver halide emulsion layer containing silver halide grains having a silver chloride content of not less tha 90 mole % and having been subjected to gold sensitization, said photographic component layer containing a gelatin of which isoelectric point being 4.0 to 5.0 and the film pH of said photographic component layer being not more than 6.0.

Inventors

  • 👤 Masaki Tanji
  • 👤 Toyoki Nishijima

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-30 04:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/047; G03C1/035; G03C2001/0471

Claims Analysis

Total Claims: 14
Claim 1
Independent Claim 76 words
A light-sensitive silver halide photographic material comprising a support and provided thereon photographic component layers including at least one light-sensitive silver halide emulsion layer containing sillver halide grains having a silver chloride content of not less than 90 mole % and having been subjected to gold sensitization, said photographic component layer containing a gelatin of which isoelectric point being 4.0 to 5.0 and the film pH of said photographic component layer being not more than 6.0.
Claim 2
Dependent Claim 76 words
A light-sensitive silver halide photographic material comprising a support and provided thereon photographic component layers including at least one light-sensitive silver halide emulsion layer containing sillver halide grains having a silver chloride content of not less than 90 mole % and having been subjected to gold sensitization, said photographic component layer containing a gelatin of which isoelectric point being 4.0 to 5.0 and the film pH of said photographic component layer being not more than 6.0.
Claim 3
Dependent Claim 33 words
The light-sensitive silver halide photographic material of claim 1, wherein said silver halide contains not more than 10 mole % of silver bromide and not more than 0.5 mole % of silver iodide.
Claim 4
Dependent Claim 26 words
The light-sensitive silver halide photographic material of claim 1, wherein said silver halide is a silver chlorobromide containing 0.1 to 2 mole % of silver bromide.
Claim 5
Dependent Claim 41 words
The light-sensitive silver halide photographic material of claim 1, wherein said silver halide grains are present at a proportion of not less than 60% by weight with respect to the total silver halide grains present in said silver halide emulsion layer.
Claim 6
Dependent Claim 19 words
The light-sensitive silver halide photographic material of claim 4, wherein the proportion is not less than 80% by weight.
Claim 7
Dependent Claim 26 words
The light-sensitive silver halide photographic material of claim 1, wherein said light-sensitive silver halide emulsion layer has been sensitized by the use of a chalcogen sensitizer.
Claim 8
Dependent Claim 23 words
The light-sensitive silver halide photographic material of claim 6, wherein said chalcogen sensitizer is selected from a sulfur sensitizer and a selenium sensitizer.
Claim 9
Dependent Claim 32 words
The light-sensitive silver halide photographic material of claim 1, wherein said gold sensitizer is used in an amount of 10 -8 mole to 10 -1 mole per 1 mole of silver halide.
Claim 10
Dependent Claim 32 words
The light-sensitive silver halide photographic material of claim 8, wherein said gold sensitizer is used in an amount of 10 -7 mole to 10 -2 mole per 1 mole of silver halide.
Claim 11
Dependent Claim 17 words
The light-sensitive silver halide photographic material of claim 7, wherein said chalcogen sensitizer is a sulfur sensitizer.
Claim 12
Dependent Claim 32 words
The light-sensitive silver halide photographic material of claim 10, wherein said sulfur sensitizer is used in an amount of 10 -7 mole to 10 -1 mole per 1 mole of silver halide.
Claim 13
Dependent Claim 27 words
The light-sensitive silver halide photographic material of claim 1, wherein said light-sensitive silver halide emulsion layer has been hardened by the use of a chlorotriazine gelatine hardener.
Claim 14
Dependent Claim 180 words
The light-sensitive silver halide photographic material of claim 12, wherein said chlorotriazine compound is represented by the general formula [HDA] or [HDB]; ##STR14## wherein R 1 and R 2 independently represent a chlorine atom, a hydroxyl group, an alkyl group, an alkoxy group, an --OM group, in which M is a mono-valent metal atom, a --NR 3 R 4 group in which R 3 and R 4 independently represent a hydrogen atom, an alkyl group, or an aryl group, or a --NHCOR 5 group, in which R 5 is a hydrogen atom, an alkyl group, an aryl group or an alkylthio group, provided that R 1 and R 2 are not simultaneously chlorine atoms; and ##STR15## wherein R 6 and R 7 independently represent a chlorine atom, a hydroxyl group, an alkyl group, an alkoxy group, or an --OM group, in which M is a mono-valent metal atom, Q and Q' independently represent a linkage group selected from --O--, --S-- and --NH--, L represents an alkylene group or an arylene group, and p and q are independently 0 or 1.

References Cited (Backward Citations)

US4564591A Cited
US4621041A Cited
US4621041B1 Cited
US4661441A Cited
US4640890A Cited
US4917994A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-06-17 1994-12-17 1995-06-18 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-06-17 1998-12-17 1999-06-18 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-06-17 2002-12-17 2003-06-18 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag