US3901697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manifold imaging process using electrically photosensitive material subject to light fatigue
Assignee: Xerox Corp
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Filing: 1973-11-28
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Granted: 1975-08-26
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Expires: 1993-11-28
Abstract
Abstract A manifold imaging process wherein a cohesively weak electrically photosensitive imaging layer is exposed to electromagnetic radiation to which the imaging layer is sensitive and subsequently subjected to an electric field while the imaging layer is sandwiched between a donor sheet and a receiver sheet. Upon separation of the sheets, the imaging layer fractures so as to provide a positive image on one of the sheets and a negative image on the other sheet.
Inventors
- 👤 Ivar T Krohn
- 👤 Jr Ray H Luebbe
- 👤 Geoffrey A Page
- 👤 Paul C Swanton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:12
CPC Classifications
G; G03; G03G; G03G17/00; G03G17/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
120 words
AN IMAGING METHOD WHICH COMPRISES SUBJECTING AN ELECTRICALLY PHOTOSENSITIVE IMAGING LAYER WHICH EXHIBITS LIGHT FATIGUE TO AN ELECTRICAL FIELD WHILE SANDWICHED BETWEEN A DONOR SHEET AND A RECEIVER SHEET SAID IMAGING LAYER COMPRISING AN ELECTRICALLY PHOTOSENSITIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF 1-(2,-METHOXY-5,-NITROPHENYLAZO)-HYDROXY-3"NITRO-3-NAPTHANILIDE, 2,9-DIMETHYL QUINACRIDONE AND NAPHTHAL RED M.C.I. NO. 12390, SAID LAYER BEING STRUCTURALLY FRACTURABLE IN RESPONSE TO THE COMBINED EFFECTS OF AN ELECTRIC FIELD AND EXPOSURE TO ELECTROMAGNETIC RADIATION TO WHICH IT IS SENSITIVE AND SEPARATING SAID SANDWICH WHILE SUBJECT TO THE ELECTRICAL FIELD WHEREBY SAID IMAGING LAYER FRACTURES IN IMAGEWISE CONFIGURATION SAID IMAGINGS LAYER HAVING BEEN IMAGEWISE EXPOSED TO ELECTROMAGNETIC RADIATION TO WHICH THE IMAGING LAYER IS SENSITIVE PRIOR TO BEING SUBJECTED TO THE ELECTRICAL FIELD.
Claim 2
Dependent Claim
120 words
AN IMAGING METHOD WHICH COMPRISES SUBJECTING AN ELECTRICALLY PHOTOSENSITIVE IMAGING LAYER WHICH EXHIBITS LIGHT FATIGUE TO AN ELECTRICAL FIELD WHILE SANDWICHED BETWEEN A DONOR SHEET AND A RECEIVER SHEET SAID IMAGING LAYER COMPRISING AN ELECTRICALLY PHOTOSENSITIVE MATERIAL SELECTED FROM THE GROUP CONSISTING OF 1-(2,-METHOXY-5,-NITROPHENYLAZO)-HYDROXY-3"NITRO-3-NAPTHANILIDE, 2,9-DIMETHYL QUINACRIDONE AND NAPHTHAL RED M.C.I. NO. 12390, SAID LAYER BEING STRUCTURALLY FRACTURABLE IN RESPONSE TO THE COMBINED EFFECTS OF AN ELECTRIC FIELD AND EXPOSURE TO ELECTROMAGNETIC RADIATION TO WHICH IT IS SENSITIVE AND SEPARATING SAID SANDWICH WHILE SUBJECT TO THE ELECTRICAL FIELD WHEREBY SAID IMAGING LAYER FRACTURES IN IMAGEWISE CONFIGURATION SAID IMAGINGS LAYER HAVING BEEN IMAGEWISE EXPOSED TO ELECTROMAGNETIC RADIATION TO WHICH THE IMAGING LAYER IS SENSITIVE PRIOR TO BEING SUBJECTED TO THE ELECTRICAL FIELD.
Claim 3
Dependent Claim
50 words
The method of claim 1 further including the step of rendering said imaging layer structurally fracturable in response to the combined effects of an electric field and exposure to electromagnetic radiation by applying an activating amount of an activator to said imaging layer prior to the separation of the sandwich.
Claim 4
Dependent Claim
10 words
The method of claim 2 wherein the activator is heat.
Claim 5
Dependent Claim
20 words
The method of claim 1 wherein the imaging layer comprises said electrically photosensitive material dispersed in an electrically insulating binder.
Claim 6
Dependent Claim
19 words
The method of claim 2 wherein the imaging layer comprises said electrically photosensitive material dispersed in an insulating binder.
Claim 7
Dependent Claim
28 words
The method of claim 1 wherein the donor sheet is at least partially transparent to the electromagnetic radiation and said imaging layer is exposed through said donor sheet.
Claim 8
Dependent Claim
39 words
The method of claim 1 wherein the imaging layer is coated onto a donor sheet which is opaque to actinic electromagnetic radiation and said imaging layer is exposed to the electromagnetic radiation on its side opposite the donor sheet.
Claim 9
Dependent Claim
54 words
The method of claim 1 wherein the imaging layer is sandwiched between a donor sheet and a receiver sheet at least one of said sheets being at least partially transparent on the electromagnetic radiation employed and said imaging layer is exposed to the electromagnetic radiation to which it is sensitive through the transparent sheet.
Claim 10
Dependent Claim
12 words
The method of claim 5 wherein the electrically photosensitive material is 1-(2''-methoxy-5''-nitrophenylazo)-hydroxy-3''''-nitro-3-naphthanilide.
Claim 11
Dependent Claim
12 words
The method of claim 5 wherein the electrically photosensitive material is 2,9-dimethyl-quinacridone.
References Cited (Backward Citations)
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US3072542A
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US3384566A
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US3707368A
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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) | 1978-08-25 | 1979-02-24 | 1979-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-25 | 1983-02-24 | 1983-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-25 | 1987-02-24 | 1987-08-26 | $7700.00 | Window Closed / Lapsed |