US4724201A
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Photoresponsive material
Assignee: Fujifilm Corp
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Filing: 1986-04-30
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Granted: 1988-02-09
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Expires: 2006-04-30
Abstract
Abstract A photoresponsive material containing a dye compound having a cyclodextrin or its derivative as a substituent. The photoresponsive material exhibits increased light absorptivity by increasing the amount of spectral sensitizer, the dye compound. The photoresponsive material is useful as a photographic emulsion and the like.
Inventors
- 👤 Masaki Okazaki
- 👤 Akihiko Ikegawa
- 👤 Haruo Takei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:05
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/10; C09B23/102; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
40 words
A spectrally sensitized silver halide photoresponsive material comprising a substrate and a silver halide layer containing an effective amount of a dye compound having a cyclodextrin or its derivative portion as a substituent for increasing the efficiency of spectral sensitization.
Claim 2
Dependent Claim
40 words
A spectrally sensitized silver halide photoresponsive material comprising a substrate and a silver halide layer containing an effective amount of a dye compound having a cyclodextrin or its derivative portion as a substituent for increasing the efficiency of spectral sensitization.
Claim 3
Dependent Claim
19 words
The photoresponsive material as set forth in claim 1, wherein the photoresponsive material is a silver halide photographic material.
Claim 4
Dependent Claim
21 words
The photoresponsive material as set forth in claim 1, wherein the dye component of the dye compound is a polymethine dye.
Claim 5
Dependent Claim
31 words
The photoresponsive material as set forth in claim 1, wherein the photoresponsive material is a silver halide photographic material and the dye component of the dye compound is a polymethine dye.
Claim 6
Dependent Claim
17 words
The photoresponsive material as set forth in claim 4, wherein the polymethine dye is a merocyanine dye.
Claim 7
Dependent Claim
18 words
The photoresponsive material as set forth in claim 5, wherein the merocyanine dye is a simple merocyanine dye.
Claim 8
Dependent Claim
18 words
The photoresponsive material as set forth in claim 6, wherein the simple merocyanine dye is a 5-(3-alkylbenzothinazoline-2-iridene)rhodanine derivative.
Claim 9
Dependent Claim
33 words
The photoreponsive material as set forth in claim 1, wherein the following compound is used as the dye compound and the photoresponsive material is a silver halide photographic material ##STR8## n=2, 3 ##STR9##
Claim 10
Dependent Claim
17 words
The photoresponsive material as set forth in claim 3, wherein the polymethine dye is a merocyanine dye.
Claim 11
Dependent Claim
18 words
The photoresponsive material as set forth in claim 9, wherein the merocyanine dye is a simple merocyanine dye.
Claim 12
Dependent Claim
17 words
The photoresponsive material as set forth in claim 10, wherein the simple merocyanine is a 5-(3-alkylbenzothiazoline-2-iridene)rhodanine derivative.
Claim 13
Dependent Claim
20 words
The photoresponsive material as set forth in claim 1, wherein the following compound is used as the dye compound ##STR10##
Claim 14
Dependent Claim
17 words
The photoresponsive material as set forth in claim 1, wherein the cyclodextrin is α-, β- or γ-cyclodextrin.
Claim 15
Dependent Claim
33 words
The photoresponsive material as set forth in claim 1, wherein the dye component is coupled to the carbon atom of the cyclodextrin to which originally a primary or secondary hydroxyl group was bound.
Claim 16
Dependent Claim
62 words
The photoresponsive material as set forth in claim 1, wherein the dye compound is represented by the following formula ##STR11## wherein L represents a connecting group; X represents O, NR or S and n represents an integral number of 5 and more, wherein R denotes a hydrogen atom, a substituted or unsubstituted alkyl, aryl or aralkyl group or a monovalent heterocyclic group.
Claim 17
Dependent Claim
32 words
The photoresponsive material as set forth in claim 1, wherein the molar ratio of cyclodextrin or its derivative to the dye component of the dye compound is in the range of 20:1˜1:8
Claim 18
Dependent Claim
29 words
The photoresponsive material as set forth in claim 1, wherein the photoresponsive material is a silver halide photographic material containing 1×10 -6 ˜5×10 -3 mole/mole-Ag of the dye compound.
Claim 19
Dependent Claim
17 words
The photoresponsive material as set forth in claim 1, wherein the dye compound is a spectral sensitizer.
Claim 20
Dependent Claim
76 words
The photoresponsive material as set forth in claim 15, wherein connecting group L is represented by the formula --P).sub.i (Y).sub.j (Q).sub.k P and Q are selected from the group consisting of ##STR12## Y is a substituted or unsubstituted alkylene, arylene or aralkylene, divalent heterocyclic ring, or aromatic residue, i, j, and k is 0 or 1, and R represents a hydrogen atom, a substituted or unsubstituted alkyl, aryl or aralkyl group or a monovalent heterocyclic group.
References Cited (Backward Citations)
US3063838A
Cited
US4283488A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-02-08 | 1991-08-10 | 1992-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-08 | 1995-08-10 | 1996-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-08 | 1999-08-10 | 2000-02-09 | $7700.00 | Window Closed / Lapsed |