Patent US4501809A successfully refreshed from Google Patents.
US4501809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photosetting microcapsules and photo- and pressure-sensitive recording sheet
Assignee: Mitsubishi Paper Mills Ltd
•
Filing: 1982-07-14
•
Granted: 1985-02-26
•
Expires: 2002-07-14
Abstract
Abstract A photosetting microcapsule containing a photosetting resin and a photopolymerization initiator can be controlled in rupture thereof. By utilizing such characteristics of said microcapsule and by using in combination said photosetting microcapsules containing a reactant such as an electron donative compound and the microcapsules containing a co-reactant such as an electron receptive compound capable of forming a colored material by reacting with said reactant or finely powdered co-reactant per se, there is provided a photo- and pressure-sensitive recording sheet which is capable of copying even a positive type original to provide a copy or copies with excellent keeping quality without causing any coloration or discoloration in the portion other than the characters, etc., of the original.
Inventors
- 👤 Shigetoshi Hiraishi
- 👤 Sadao Morishita
- 👤 Toshihiko Matsushita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:07
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/002; B; B41; B41M; B41M5/00; B41M5/124; B41M5/165
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
47 words
A photo- and pressure-sensitive recording sheet which comprises a support having thereon a photo- and pressure-sensitive layer comprising (1) photosetting microcapsules containing principally a photosetting resin, a reactant and a photopolymerization initiator and (2) microcapsules containing a co-reactant forming a colored material upon contact with said reactant.
Claim 2
Dependent Claim
47 words
A photo- and pressure-sensitive recording sheet which comprises a support having thereon a photo- and pressure-sensitive layer comprising (1) photosetting microcapsules containing principally a photosetting resin, a reactant and a photopolymerization initiator and (2) microcapsules containing a co-reactant forming a colored material upon contact with said reactant.
Claim 3
Dependent Claim
53 words
A photo- and pressure-sensitive recording sheet which comprises a support having thereon a photo- and pressure-sensitive layer comprising photosetting microcapsules containing principally a photosetting resin a reactant and photopolymerization initiator and photosetting microcapsules containing a photosetting resin, a photopolymerization initiator and a co-reactant which forming a colored material upon contact with said reactant.
Claim 4
Dependent Claim
53 words
A photo- and pressure-sensitive recording sheet which comprises a support having thereon a photo- and pressure-sensitive layer comprising photosetting microcapsules containing principally a photosetting resin a reactant and photopolymerization initiator and photosetting microcapsules containing a photosetting resin, a photopolymerization initiator and a co-reactant which forming a colored material upon contact with said reactant.
Claim 5
Dependent Claim
81 words
The recording sheet according to claim 1 or 2, wherein the photosetting resin is selected from the photo-dimerization type resins having a photosensitive group such as cinnamic acid residue, cinnamylidene residue, α,β-unsaturated ketone residue, cumarin residue, anthracene residue, α-phenylmaleimide residue, benzophenone residue, and stilbene residue; photo-decomposition type resins having a photosensitive group such as diazonium salt residue, quinonediazide residue, azide residue, dithiocarbamate residue, and benzoin residue; and photopolymerization type resins having an acryloyl group, allyl group, vinyl group, and epoxy group.
Claim 6
Dependent Claim
88 words
A copying method which comprises exposing a recording sheet in superposed relation with an original to be copied to harden photosetting microcapsules in said recording sheet in areas corresponding to non-image areas of said original, said recording sheet comprising a support having thereon a photo-and pressure-sensitive layer comprising (1) photosetting microcapsules containing principally a photosetting resin, a photopolymerization initiator and a reactant and (2) microcapsules containing a co-reactant which forms a colored material upon contact with said reactant and then pressing the sheet to form a copy image.
Claim 7
Dependent Claim
88 words
A copying method which comprises exposing a recording sheet in superposed relation with an original to be copied to harden photosetting microcapsules in said recording sheet in areas corresponding to non-image areas of said original, said recording sheet comprising a support having thereon a photo-and pressure-sensitive layer comprising (1) photosetting microcapsules containing principally a photosetting resin, a photopolymerization initiator and a reactant and (2) microcapsules containing a co-reactant which forms a colored material upon contact with said reactant and then pressing the sheet to form a copy image.
Claim 8
Dependent Claim
97 words
A copying method which comprises exposing a recording sheet in superposed relation with an original to be copied to harden photosetting microcapsules in said recording sheet in areas corresponding to non-image areas of said original, said recording sheet comprising a support having thereon a photo- and pressure-sensitive layer comprising (1) photosetting microcapsules containing principally a photosetting resin, a photopolymerization initiator and a reactant and (2) photosetting microcapsules containing a photosetting resin, a photopolymerization initiator and a co-reactant which forms a colored material upon contact with said reactant, and then pressing the sheet to form a copy image.
Claim 9
Dependent Claim
97 words
A copying method which comprises exposing a recording sheet in superposed relation with an original to be copied to harden photosetting microcapsules in said recording sheet in areas corresponding to non-image areas of said original, said recording sheet comprising a support having thereon a photo- and pressure-sensitive layer comprising (1) photosetting microcapsules containing principally a photosetting resin, a photopolymerization initiator and a reactant and (2) photosetting microcapsules containing a photosetting resin, a photopolymerization initiator and a co-reactant which forms a colored material upon contact with said reactant, and then pressing the sheet to form a copy image.
Claim 10
Dependent Claim
81 words
A copying method which comprises impressing characters on a photo- and pressure-sensitive recording sheet comprising a support having thereon a photo- and pressure-sensitive layer comprising (1) photosetting microcapsules containing principally a photosetting resin, a photopolymerization initiator and a reactant and (2a) microcapsules containing a co-reactant which forms a colored material upon contact with said reactant or (2b) finely powdered co-reactant to form a copy image and then exposing the entire surface of said image-formed sheet to obtain a fixed copy image.
Claim 11
Dependent Claim
81 words
A copying method which comprises impressing characters on a photo- and pressure-sensitive recording sheet comprising a support having thereon a photo- and pressure-sensitive layer comprising (1) photosetting microcapsules containing principally a photosetting resin, a photopolymerization initiator and a reactant and (2a) microcapsules containing a co-reactant which forms a colored material upon contact with said reactant or (2b) finely powdered co-reactant to form a copy image and then exposing the entire surface of said image-formed sheet to obtain a fixed copy image.
Claim 12
Dependent Claim
81 words
A copying method which comprises impressing characters on a photo- and pressure-sensitive recording sheet comprising a support having thereon a photo- and pressure-sensitive layer comprising photosetting microcapsules containing principally a photosetting resin, a photopolymerization initiator and a reactant and microcapsules containing a photosetting resin, a photopolymerization initiator and a co-reactant which forms a colored material upon contact with said reactant to form a copy image and then exposing the entire surface of this image-formed sheet to obtain a fixed copy image.
Claim 13
Dependent Claim
81 words
A copying method which comprises impressing characters on a photo- and pressure-sensitive recording sheet comprising a support having thereon a photo- and pressure-sensitive layer comprising photosetting microcapsules containing principally a photosetting resin, a photopolymerization initiator and a reactant and microcapsules containing a photosetting resin, a photopolymerization initiator and a co-reactant which forms a colored material upon contact with said reactant to form a copy image and then exposing the entire surface of this image-formed sheet to obtain a fixed copy image.
Claim 14
Dependent Claim
27 words
The copying method according to claim 4, 5, 6 or 7, wherein the reactant is an electron donative compound and the co-reactant is an electron receptive compound.
Claim 15
Dependent Claim
27 words
The copying method according to claim 4, 5, 6 or 7, wherein the reactant is an electron receptive compound and the co-reactant is an electron donative compound.
Claim 16
Dependent Claim
25 words
The copying method according to claim 4, 5, 6 or 7, wherein the reactant is a ligand and the co-reactant is a polyvalent metallic compound.
Claim 17
Dependent Claim
25 words
The copying method according to claim 4, 5, 6 or 7, wherein the reactant is a polyvalent metallic compound and the co-reactant is a ligand.
Claim 18
Dependent Claim
25 words
The recording sheet according to claim 1, or 2, wherein the reactant is an electron donative compound and the co-reactant is an electron receptive compound.
Claim 19
Dependent Claim
25 words
The recording sheet according to claim 1, or 2, wherein the reactant is an electron receptive compound and the co-reactant is an electron donative compound.
Claim 20
Dependent Claim
23 words
The recording sheet according to claim 1 or 2, wherein the reactant is a ligand and the co-reactant is a polyvalent metallic compound.
Claim 21
Dependent Claim
23 words
The recording sheet according to claim 1 or 2, wherein the reactant is a polyvalent metallic compound and the co-reactant is a ligand.
References Cited (Backward Citations)
US3219446A
Cited
US3576660A
Cited
JPS496212A
Cited
US4165398A
Cited
US4372582A
Cited
US4399209A
Cited
US4440846A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-02-26 | 1988-08-27 | 1989-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-02-26 | 1992-08-27 | 1993-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-02-26 | 1996-08-27 | 1997-02-26 | $7700.00 | Window Closed / Lapsed |