US5017546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkyl salicylate developer resin for carbonless copy paper and imaging use
Assignee: SI Group Inc
•
Filing: 1990-07-13
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Granted: 1991-05-21
•
Expires: 2010-07-13
Abstract
Abstract Phenol/aldehyde condensation products useful in the development of colored images from colorless dyes are disclosed. The phenol/aldehyde condensation products are produced by the interaction of an alkyl-substituted salicylic acid, an alkyl-substituted phenol, an aldehyde, and a metal source. The phenol/aldehyde condensation products are particularly useful in a photosensitive imaging system in which images are formed by the image-wise reaction of the developer with one or more chromogenic materials, and in carbonless copy paper systems.
Inventors
- 👤 Karl M. Brinkman
- 👤 John L. Sullivan
- 👤 David R. Hanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:36
CPC Classifications
B; B41; B41M; B41M5/00; B41M5/124; B41M5/132; B41M5/155
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
72 words
In a system in which images are formed selectively in parts of a surface in the form of a colored material by the reaction of one or more colorless chromogenic materials with an acidic developer; the improvement in which the developer contains a phenol/aldehyde condensation product produced by the reaction together of an alkyl-substituted salicylic acid, an alkyl-substituted phenol, and an aldehyde which condensation product has been reacted with a metal source.
Claim 2
Dependent Claim
72 words
In a system in which images are formed selectively in parts of a surface in the form of a colored material by the reaction of one or more colorless chromogenic materials with an acidic developer; the improvement in which the developer contains a phenol/aldehyde condensation product produced by the reaction together of an alkyl-substituted salicylic acid, an alkyl-substituted phenol, and an aldehyde which condensation product has been reacted with a metal source.
Claim 3
Dependent Claim
65 words
In a system in which images are formed selectively in parts of a surface in the form of a colored material by the reaction of one or more colorless chromogenic materials with an acidic developer; the improvement in which the developer contains a phenol/aldehyde condensation product produced by the reaction together of an alkyl-substituted salicylic acid, an alkyl-substituted phenol, an aldehyde and a metal source.
Claim 4
Dependent Claim
65 words
In a system in which images are formed selectively in parts of a surface in the form of a colored material by the reaction of one or more colorless chromogenic materials with an acidic developer; the improvement in which the developer contains a phenol/aldehyde condensation product produced by the reaction together of an alkyl-substituted salicylic acid, an alkyl-substituted phenol, an aldehyde and a metal source.
Claim 5
Dependent Claim
52 words
The system of claim 1 in which images are formed by image-wise exposure of a photosensitive encapsulate containing a chromogenic material to actinic radiation and rupture of the capsules in the presence of a developer whereby a patterned reaction of the chromogenic material and developer is obtained which produces a contrasting image.
Claim 6
Dependent Claim
57 words
The system of claim 1 in which images are formed by the application of pressure selectively to microcapsules containing a chromogen in parts of said surface whereby the microcapsules are ruptured in the presence of a color developer, thus releasing the chromogen which reacts with the color developer to form an image at the point of pressure.
Claim 7
Dependent Claim
24 words
The system of claim 1, wherein the alkyl-substituted salicylic acid is substituted with at least one alkyl group containing at least three carbon atoms.
Claim 8
Dependent Claim
29 words
The system of claim 5, wherein the alkyl substituted salicylic acid is of the formula: ##STR15## wherein R is an alkyl group containing from 4 to 12 carbon atoms.
Claim 9
Dependent Claim
11 words
The system of claim 6, wherein R is an octyl group.
Claim 10
Dependent Claim
11 words
The system of claim 7, wherein R is a tertiary-octyl group.
Claim 11
Dependent Claim
11 words
The system of claim 6, wherein R is a nonyl group.
Claim 12
Dependent Claim
11 words
The system of claim 6, wherein R is a dodecyl group.
Claim 13
Dependent Claim
23 words
The system of claim 1, wherein the alkyl-substituted phenol is substituted with at least one alkyl group containing at least three carbon atoms.
Claim 14
Dependent Claim
26 words
The system of claim 11, wherein the alkyl substituted phenol is substituted in the para position with an alkyl group containing 4 to 12 carbon atoms.
Claim 15
Dependent Claim
13 words
The system of claim 12, wherein the alkyl group is a tertiary-butyl group.
Claim 16
Dependent Claim
13 words
The system of claim 12, wherein the alkyl group is a tertiary-octyl group.
Claim 17
Dependent Claim
13 words
The system of claim 12, wherein the alkyl group is a nonyl group.
Claim 18
Dependent Claim
13 words
The system of claim 12, wherein the alkyl group is a dodecyl group.
Claim 19
Dependent Claim
11 words
The system of claim 1, wherein the aldehyde is a formaldehyde.
Claim 20
Dependent Claim
12 words
The system of claim 1, wherein the metal source is zinc oxide.
Claim 21
Dependent Claim
50 words
In a system in which images are formed selectively in parts of a surface in the form of a colored material by the reaction of one or more colorless chromogenic materials with an acidic developer; the improvement in which the developer contains a phenol/aldehyde condensation product of the formula: ##STR16##
Claim 22
Dependent Claim
50 words
In a system in which images are formed selectively in parts of a surface in the form of a colored material by the reaction of one or more colorless chromogenic materials with an acidic developer; the improvement in which the developer contains a phenol/aldehyde condensation product of the formula: ##STR16##
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-20 | 1994-11-19 | 1995-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-20 | 1998-11-19 | 1999-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-20 | 2002-11-19 | 2003-05-21 | $7700.00 | Window Closed / Lapsed |