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US3973966A
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Photochromic composition containing a diphenyl dibenzochrom-3-ene
Assignee: Xerox Corp
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Filing: 1974-05-08
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Granted: 1976-08-10
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Expires: 1994-05-08
Abstract
Abstract Disclosed are novel imaging imaging comprising photochromic compounds of the formula:
Inventors
- 👤 John B. Flannery
- 👤 Anita C. Van Laeken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:33
CPC Classifications
C; C07; C07D; C07D335/00; C07D335/04; C07D311/00; C07D311/02; C07D311/78; C07D345/00; C09; C09K; C09K9/00; C09K9/02; G; G03; G03C; G03C1/00; G03C1/72; G03C1/73; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26; Y; Y10; Y10S; Y10S430/00; Y10S430/163
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
61 words
A photochromic composition comprising a compound having the formula: ##SPC8## wherein X is selected from the group consisting of oxygen, sulfur and selenium; and wherein R 1 and R 2 are individually selected from the group consisting of a substituted or unsubstituted lower alkyl of 1-8 carbon atoms a phenyl group or a substituted phenyl group and a film forming resin.
Claim 2
Dependent Claim
61 words
A photochromic composition comprising a compound having the formula: ##SPC8## wherein X is selected from the group consisting of oxygen, sulfur and selenium; and wherein R 1 and R 2 are individually selected from the group consisting of a substituted or unsubstituted lower alkyl of 1-8 carbon atoms a phenyl group or a substituted phenyl group and a film forming resin.
Claim 3
Dependent Claim
68 words
An imaging member comprising a transparent film substrate having superimposed thereon a homogeneous thin film of a compound having the formula: ##SPC9## wherein X is selected from the group consisting of oxygen, sulfur and selenium; and wherein R 1 and R 2 are individually selected from the group consisting of a substituted or unsubstituted lower alkyl of 1-8 carbon atoms, a phenyl group or a substituted phenyl group.
Claim 4
Dependent Claim
68 words
An imaging member comprising a transparent film substrate having superimposed thereon a homogeneous thin film of a compound having the formula: ##SPC9## wherein X is selected from the group consisting of oxygen, sulfur and selenium; and wherein R 1 and R 2 are individually selected from the group consisting of a substituted or unsubstituted lower alkyl of 1-8 carbon atoms, a phenyl group or a substituted phenyl group.
Claim 5
Dependent Claim
18 words
An imaging member according to claim 2 wherein the photochromic compound is admixed with a film forming resin.
Claim 6
Dependent Claim
12 words
A photochromic composition comprising a compound according to the formula: ##SPC10##and polystyrene.
Claim 7
Dependent Claim
12 words
A photochromic composition comprising a compound according to the formula: ##SPC10##and polystyrene.
Claim 8
Dependent Claim
39 words
A photochromic composition comprising a compound according to the forumla: ##SPC11## wherein R 1 and R 2 are individually selected from the group consisting of lower alkyl of 1-8 carbon atoms, phenyl, substituted phenyl and a film forming resin.
Claim 9
Dependent Claim
39 words
A photochromic composition comprising a compound according to the forumla: ##SPC11## wherein R 1 and R 2 are individually selected from the group consisting of lower alkyl of 1-8 carbon atoms, phenyl, substituted phenyl and a film forming resin.
Claim 10
Dependent Claim
39 words
A photochromic composition comprising a compound according to the formula: ##SPC12## wherein R 1 and R 2 are individually selected from the group consisting of lower alkyl of 1-8 carbon atoms, phenyl, substituted phenyl and a film forming resin.
Claim 11
Dependent Claim
39 words
A photochromic composition comprising a compound according to the formula: ##SPC12## wherein R 1 and R 2 are individually selected from the group consisting of lower alkyl of 1-8 carbon atoms, phenyl, substituted phenyl and a film forming resin.
Claim 12
Dependent Claim
68 words
An imaging member comprising a supporting substrate having superimposed thereon a homogeneous thin film of a photochromic compound having the formula: ##SPC13## wherein X is selected from the group consisting of oxygen, sulfur and selenium; and wherein R 1 and R 2 are individually selected from the group consisting of a substituted or unsubstituted lower alkyl of 1-8 carbon atoms, a phenyl group or a substituted phenyl group.
Claim 13
Dependent Claim
68 words
An imaging member comprising a supporting substrate having superimposed thereon a homogeneous thin film of a photochromic compound having the formula: ##SPC13## wherein X is selected from the group consisting of oxygen, sulfur and selenium; and wherein R 1 and R 2 are individually selected from the group consisting of a substituted or unsubstituted lower alkyl of 1-8 carbon atoms, a phenyl group or a substituted phenyl group.
Claim 14
Dependent Claim
122 words
An imaging process for forming a plurality of images comprising the steps of: a. providing an imaging member comprising a support substrate having superimposed thereon a homogeneous thin film of a selectively activated photochromic compound which is capable of at least two activated states wherein each state is distinguishable by different degrees of persistence having the formula: ##SPC14## wherein x is selected from the group consisting of oxygen, sulfur and selenium; and wherein R 1 and R 2 are individually selected from the group consisting of a substituted or unsubstituted lower alkyl of 1-8 carbon atoms, phenyl, substituted phenyl and, b. imagewise exposing said imaging member to electromagnetic radiation suitable for transforming the member to an activated state to form an image.
Claim 15
Dependent Claim
122 words
An imaging process for forming a plurality of images comprising the steps of: a. providing an imaging member comprising a support substrate having superimposed thereon a homogeneous thin film of a selectively activated photochromic compound which is capable of at least two activated states wherein each state is distinguishable by different degrees of persistence having the formula: ##SPC14## wherein x is selected from the group consisting of oxygen, sulfur and selenium; and wherein R 1 and R 2 are individually selected from the group consisting of a substituted or unsubstituted lower alkyl of 1-8 carbon atoms, phenyl, substituted phenyl and, b. imagewise exposing said imaging member to electromagnetic radiation suitable for transforming the member to an activated state to form an image.
Claim 16
Dependent Claim
13 words
An imaging process according to claim 8, wherein a latent image is formed.
Claim 17
Dependent Claim
14 words
An imaging process according to claim 8, wherein a visible colored image is formed.
References Cited (Backward Citations)
US3359103A
Cited
US3642479A
Cited
USPTO Annuity & Maintenance Windows
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| 3.5 Years (Year 4) | 1979-08-10 | 1980-02-09 | 1980-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-10 | 1984-02-09 | 1984-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-10 | 1988-02-09 | 1988-08-10 | $7700.00 | Window Closed / Lapsed |