US3887378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image recording and receiving materials
Assignee: Agfa Gevaert NV
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Filing: 1974-04-12
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Granted: 1975-06-03
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Expires: 1994-04-12
Abstract
Abstract An image reproduction material for producing copies in a dry way comprising a layer which contains a substantially lightinsensitive silver salt, a reducing agent and a toner, characterized in that it contains a hydroxyindane as reducing agent.
Inventors
- 👤 Alfons Klein
- 👤 Anita Von Konig
- 👤 Albert Lucien Poot
- 👤 Karlfried Wedemeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:20
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/498; G03C1/49827; G03C1/4989
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
43 words
AN IMAGE REPORUDCTION MATERIAL SELECTED FROM THE GROUP CONSISTING OF A RECORDING MATERIAL AND AN IMAGE-RECEIVING MATERIAL COMPRISING A LAYER WHICH CONTAINS A SUBSTANTIALLY LIGHT-INSENSTIVE SILVER SALT, A RREDUCING AGENT AND A TONER, CHARACTERIZED IN THAT IT CONTAINS A HYDROXYINDANE AS REDUCING AGENT.
Claim 2
Dependent Claim
43 words
AN IMAGE REPORUDCTION MATERIAL SELECTED FROM THE GROUP CONSISTING OF A RECORDING MATERIAL AND AN IMAGE-RECEIVING MATERIAL COMPRISING A LAYER WHICH CONTAINS A SUBSTANTIALLY LIGHT-INSENSTIVE SILVER SALT, A RREDUCING AGENT AND A TONER, CHARACTERIZED IN THAT IT CONTAINS A HYDROXYINDANE AS REDUCING AGENT.
Claim 3
Dependent Claim
43 words
An image reproduction material selected from the group consisting of a recording material and an image-receiving material comprising a layer which contains a substantially light-insensitive silver salt, a reducing agent and a toner, characterized in that it contains a hydroxyindane as reducing agent.
Claim 4
Dependent Claim
43 words
An image reproduction material selected from the group consisting of a recording material and an image-receiving material comprising a layer which contains a substantially light-insensitive silver salt, a reducing agent and a toner, characterized in that it contains a hydroxyindane as reducing agent.
Claim 5
Dependent Claim
17 words
A material according to claim 1, characterized in that it contains a hydroXyindane of the following formula:
Claim 6
Dependent Claim
30 words
A photographic recording material according to claim 1, characterized in that it contains in addition a light-sensitive heavy metal compound and/or a polymethine sensitizer for sensitizing the light-insensitive silver salt.
Claim 7
Dependent Claim
24 words
A material according to claim 2, characterized in that it contains a silver salt of a long chain fatty acid as light-insensitive silver salt.
Claim 8
Dependent Claim
16 words
A material according to claim 4, characterized in that it contains silver behenate or silver stearate.
Claim 9
Dependent Claim
23 words
A photographic recording material according to claim 3, characterized in that the light-sensitive heavy metal compound contained in it is a silver halide.
Claim 10
Dependent Claim
36 words
A photographic recording material according to claim 3, characterized in that the light-sensitive heavy metal compound is contained in it in quantities of 0.05 to o.2% by weight, based on the weight of light-insensitive silver salt.
Claim 11
Dependent Claim
29 words
A material according to claim 2, characterized in that the reducing agent is contained in it in quantities of 0.1 to 4 moles per mol of light-insensitive silver salt.
Claim 12
Dependent Claim
44 words
A photographic recording material according to claim 3, characterized in that the layer which contains the light-insensitive silver salt contains a polymethine sensitizer for sensitizing the light-insensitive silver salt and that a reducing agent is contained in this layer or in an adjacent layer.
Claim 13
Dependent Claim
31 words
A material according to claim 2, characterized in that the light-insensitive silver salt is a silver salt of a long chain aliphatic carboxylic acid which is substituted with a thioether group.
Claim 14
Dependent Claim
16 words
A photographic recording material according to claim 3, characterized in that it contains a mercury(II) compound.
Claim 15
Dependent Claim
16 words
A material according to claim 2, characterized in that the hydroxyl group is in the 5-position.
Claim 16
Dependent Claim
28 words
A material according to claim 2, characterized in that R1 represents an additional hydroxyindane group attached by a thioether bridge or a bridge member of the following formula:
Claim 17
Dependent Claim
16 words
A material according to claim 2, characterized in that R2 and/or R3 represents a cycloalkyl group.
Claim 18
Dependent Claim
16 words
A material according to claim 2, characterized in that R4, R5, R8 and R9 represent methyl.
Claim 19
Dependent Claim
26 words
A material according to claim 12, characterized in that R1 in the 6-position represents hydrogen, alkyl, cycloalkyl or another hydroxyindane group attached by said bridge member.
Claim 20
Dependent Claim
22 words
A material according to claim 2, characterized in that it contains as additional reducing agent an o-alkyl-substituted or cycloalkyl-substituted monophenol or bisphenol.
References Cited (Backward Citations)
US3773512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |