US4772529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and product for photosensitive and pressure-sensitive recording
Assignee: Brother Industries Ltd
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Filing: 1987-03-30
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Granted: 1988-09-20
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Expires: 2007-03-30
Abstract
Abstract A photosensitive and pressure-sensitive recording sheet and a process for recording an image using such recording sheet, said recording sheet comprising microcapsules, which enclose a first component, held on one side surface of a sheet and a second component, which causes color change of the surface of sheet when it reacts with the first component that is held on said one side surface of the sheet, held on the opposing side surface of the sheet and, moreover, one other component, which causes a change in the mechanical breaking strength of the microcapsule in response to exposure to light, enclosed in the microcapsules; and said process comprising exposing said one side surface of the sheet holding the microcapsules to a light, putting the so exposed surface of the sheet together with the surface, which holds the second component, of another recording sheet of the same construction and pressing the so laminated two sheets with each other.
Inventors
- 👤 Jun Sakai
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:41
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/002; Y; Y10; Y10S; Y10S430/00; Y10S430/163
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
100 words
A photosensitive and pressure sensitive recording sheet having a first face and a second face opposite to said first face; said first face having thereon microcapsules enveloping a first reaction component for an image developing reaction and a component which causes an alteration in the mechanical breaking strength of the microcapsules in response to exposure to light; and, said second face having thereon a second reaction component for said developing reaction which causes a change in color of one of said faces in locations where said second reaction component comes in contact with and reacts with said first reaction component.
Claim 2
Dependent Claim
100 words
A photosensitive and pressure sensitive recording sheet having a first face and a second face opposite to said first face; said first face having thereon microcapsules enveloping a first reaction component for an image developing reaction and a component which causes an alteration in the mechanical breaking strength of the microcapsules in response to exposure to light; and, said second face having thereon a second reaction component for said developing reaction which causes a change in color of one of said faces in locations where said second reaction component comes in contact with and reacts with said first reaction component.
Claim 3
Dependent Claim
191 words
A process for recording images on a photosensitive and pressure sensitive recording sheets each having a first face and a second face opposite to said first face; said first face having thereon microcapsules enveloping a first reaction component for an image developing reaction and a component which causes an alteration in the mechanical breaking strength of the microcapsules in response to exposure to light; and, said second face having thereon a second reaction component for said developing reaction which causes a change in color of one of said faces in locations where said second reaction component comes in contact with and reacts with said first reaction component, said process comprising: exposing said first face of a first recording sheet to light; placing the thus exposed first face of said first sheet against a second face of a second recording sheet; pressing said first and second recording sheets against each other whereby to break certain of the microcapsules of said first face of said first recording sheet to thereby bring about a developing reaction in locations where said second reaction component comes in contact with and reacts with said first reaction component.
Claim 4
Dependent Claim
191 words
A process for recording images on a photosensitive and pressure sensitive recording sheets each having a first face and a second face opposite to said first face; said first face having thereon microcapsules enveloping a first reaction component for an image developing reaction and a component which causes an alteration in the mechanical breaking strength of the microcapsules in response to exposure to light; and, said second face having thereon a second reaction component for said developing reaction which causes a change in color of one of said faces in locations where said second reaction component comes in contact with and reacts with said first reaction component, said process comprising: exposing said first face of a first recording sheet to light; placing the thus exposed first face of said first sheet against a second face of a second recording sheet; pressing said first and second recording sheets against each other whereby to break certain of the microcapsules of said first face of said first recording sheet to thereby bring about a developing reaction in locations where said second reaction component comes in contact with and reacts with said first reaction component.
References Cited (Backward Citations)
US4399209A
Cited
US4416966A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-09-20 | 1992-03-21 | 1992-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-09-20 | 1996-03-21 | 1996-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-09-20 | 2000-03-21 | 2000-09-20 | $7700.00 | Window Closed / Lapsed |