US4717650A
Expired / Lapsed
US
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Silver halide photographic emulsion
Assignee: Fujifilm Holdings Corp
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Filing: 1986-03-06
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Granted: 1988-01-05
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Expires: 2006-03-06
Abstract
Abstract A silver halide photographic emulsion having a high spectral-sensitivity in a red-color wavelength range, especially within a wavelength range of from 600 nm to 690 nm, is disclosed, which contains one or more sensitizing dyes represented by formula (I) ##STR1## wherein R 1 , R 2 , R 3 , and R 4 each represents an alkyl group, a substituted alkyl group, or an alkenyl group; V 1 , V 2 , V 3 , and V 4 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a carboxyl group, an alkoxysulfonyl group, a cyano group, or a trifluoromethyl group; Q represents an alkyl group or an aralkyl group; X.sup.⊖ represents an anion; and m is 1 or 2, provided that when the dye forms an internal salt, m is 1.
Inventors
- 👤 Tadashi Ikeda
- 👤 Haruo Takei
- 👤 Masaki Okazaki
- 👤 Keizo Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:08
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12; G03C1/14; G03C1/20; Y; Y10; Y10S; Y10S430/00; Y10S430/146
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
121 words
A silver halide photographic emulsion containing one or more sensitizing dye represented by formula (I) ##STR8## wherein R 1 , R 2 , R 3 , and R 4 each represents an alkyl group, a substituted alkyl group or an alkenyl group; V 1 , V 2 , V 3 , and V 4 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a carboxyl group, an alkylsulfonyl group, a cyano group, or a trifluoromethyl group; Q represents an alkyl group or an aralkyl group; X.sup.⊖ represents an anion; and m is 1 or 2, provided that when said dye forms an internal salt, m is 1.
Claim 2
Dependent Claim
121 words
A silver halide photographic emulsion containing one or more sensitizing dye represented by formula (I) ##STR8## wherein R 1 , R 2 , R 3 , and R 4 each represents an alkyl group, a substituted alkyl group or an alkenyl group; V 1 , V 2 , V 3 , and V 4 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a carboxyl group, an alkylsulfonyl group, a cyano group, or a trifluoromethyl group; Q represents an alkyl group or an aralkyl group; X.sup.⊖ represents an anion; and m is 1 or 2, provided that when said dye forms an internal salt, m is 1.
Claim 3
Dependent Claim
37 words
A silver halide photographic emulsion as in claim 1, containing silver halide particles formed of crystals in which the surface area of the surface [1,0,0] to the total surface area of said particles is 80% or more.
Claim 4
Dependent Claim
40 words
A silver halide photographic emulsion as in claim 1, wherein two or more of V 1 to V 4 represent chlorine atoms and one or more of V 1 to V 4 represent a cyano group or a trifluoromethyl group.
Claim 5
Dependent Claim
38 words
A silver halide photographic emulsion as in claim 1, wherein one or more of R 1 and R 2 represent a sulfoalkyl group, and one or more of R 1 to R 4 represent a fluorine-substituted alkyl group.
Claim 6
Dependent Claim
40 words
A silver halide photographic emulsion as in claim 2, wherein two or more of V 1 to V 4 represent chlorine atoms and one or more of V 1 to V 4 represent a cyano group or a trifluoromethyl group.
Claim 7
Dependent Claim
38 words
A silver halide photographic emulsion as in claim 2, wherein one or more of R 1 and R 2 is a sulfoalkyl group and one or more of R 1 to R 4 is a fluorine-substituted alkyl group.
Claim 8
Dependent Claim
25 words
A silver halide photographic emulsion as in claim 1, wherein Q is a methyl group, an ethyl group, a propyl group, or a benzyl group.
Claim 9
Dependent Claim
25 words
A silver halide photographic emulsion as in claim 2, wherein Q is a methyl group, an ethyl group, a propyl group, or a benzyl group.
Claim 10
Dependent Claim
36 words
A silver halide photographic emulsion as in claim 1, wherein said sensitizing dye is contained in an amount of from 5×10 -7 mole to 5×10 -3 mole per mole of silver halide contained in the emulsion.
Claim 11
Dependent Claim
36 words
A silver halide photographic emulsion as in claim 2, wherein said sensitizing dye is contained in an amount of from 5×10 -7 mole to 5×10 -3 mole per mole of silver halide contained in the emulsion.
Claim 12
Independent Claim
157 words
A method for forming a photographic image comprising conducting imagewise exposure using a light source having a maximum energy in a wavelength range of from 620 to 670 nm of a photographic material including a silver halide photographic emulsion containing one or more sensitizing dyes represented by formula (I) ##STR9## wherein R 1 , R 2 , R 3 , and R 4 each represents an alkyl group, a substituted alkyl group, or an alkenyl group; V 1 , V 2 , V 3 , and V 4 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a carboxyl group, an alkylsulfonyl group, a cyano group, or a trifluoromethyl group; Q represents an alkyl group or an aralkyl group; X.sup.⊖ represents an anion; and m is 1 or 2, provided that when one of said dye forms an internal salt, m is 1.
Claim 13
Independent Claim
157 words
A method for forming a photographic image comprising conducting imagewise exposure using a light source having a maximum energy in a wavelength range of from 620 to 670 nm of a photographic material including a silver halide photographic emulsion containing one or more sensitizing dyes represented by formula (I) ##STR9## wherein R 1 , R 2 , R 3 , and R 4 each represents an alkyl group, a substituted alkyl group, or an alkenyl group; V 1 , V 2 , V 3 , and V 4 each represents a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an acyl group, an acyloxy group, an alkoxycarbonyl group, a carboxyl group, an alkylsulfonyl group, a cyano group, or a trifluoromethyl group; Q represents an alkyl group or an aralkyl group; X.sup.⊖ represents an anion; and m is 1 or 2, provided that when one of said dye forms an internal salt, m is 1.
Claim 14
Dependent Claim
14 words
A method as in claim 11, wherein said light source is a neon/helium laser.
Claim 15
Dependent Claim
37 words
A silver halide photographic emulsion as in claim 1, containing silver halide particles formed of crystals in which the surface area of the surface [1,0,0] to the total surface area of said particles is 50% or more.
Claim 16
Dependent Claim
40 words
A method as in claim 11, wherein the silver halide photographic emulsion contains silver halide particles formed of crystals in which the surface area of the surface [1,0,0] to the total surface area of said particles is 50% or more.
Claim 17
Dependent Claim
26 words
A method as in claim 14, wherein the surface area of the surface [1,0,0] to the total surface area of said particles is 80% or more.
References Cited (Backward Citations)
US3955996A
Cited
US4046572A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-01-04 | 1991-07-06 | 1992-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-01-04 | 1995-07-06 | 1996-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-01-04 | 1999-07-06 | 2000-01-05 | $7700.00 | Window Closed / Lapsed |