US3854942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparency for multi-color electrostatic copying
Assignee: Xerox Corp
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Filing: 1973-01-08
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Granted: 1974-12-17
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Expires: 1993-01-08
Abstract
Abstract A transparency is disclosed, which is suitable for use in a multi-colored xerographic reproduction process comprising a transparent, thermoplastic film sheet having at least one surface coated with a mixture consisting of a vinyl chloride-acetate copolymer resin and an acrylic resin in a weight ratio of between about 6:4 and 7:3, with a wetting agent in said mixture in an amount between about 2.5 to 25% by weight of said mixture. In a preferred embodiment, a percentage of a particulate material is also incorporated in the coating to reduce static charge on the transparency and permit easier handling thereof. The coated transparency, when used in a multi-colored electrostatic copying process improves adhesion of the multi-colored image thereon and permits reproduction of colors and color densities in said image which correspond well to the multi-colored original copied.
Inventors
- 👤 A Akman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:37
CPC Classifications
G; G03; G03G; G03G7/00; G03G7/0006; G03G7/002; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; G03G7/0013; G03G7/0026; G03G7/004; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/31504; Y10T428/31507; Y10T428/31533; Y10T428/31652; Y10T428/31667; Y10T428/31855
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
83 words
A TRANSPARENCY FOR THE FORMATION OF AN ADHERENT ELECTROSTATIC IMAGE THEREON COMPRISING A THERMOPLASTIC FILM SHEET, SAID SHEET HAVING AT LEAST ONE SURFACE COATED WITH A MIXTURE WHICH COMPRISES AN ACRYLIC RESIN, AND VINYL CHLORIDEACETATE COPOLYMER RESIN IN A WEIGHT RATIO OF BETWEEN ABOUT 6:4 AND 7:6, A WETTING AGENT IN AN AMOUNT OF BETWEEN ABOUT 2.5 TO 25% BY WEIGHT OF SAID MIXTURE WITH AN EFFECTIVE AMOUNT OF A PARTICULATE MATERIAL IN SAID MIXTURE TO REDUCE THE STATIC PROPERTIES OF SAID SHEET.
Claim 2
Dependent Claim
83 words
A TRANSPARENCY FOR THE FORMATION OF AN ADHERENT ELECTROSTATIC IMAGE THEREON COMPRISING A THERMOPLASTIC FILM SHEET, SAID SHEET HAVING AT LEAST ONE SURFACE COATED WITH A MIXTURE WHICH COMPRISES AN ACRYLIC RESIN, AND VINYL CHLORIDEACETATE COPOLYMER RESIN IN A WEIGHT RATIO OF BETWEEN ABOUT 6:4 AND 7:6, A WETTING AGENT IN AN AMOUNT OF BETWEEN ABOUT 2.5 TO 25% BY WEIGHT OF SAID MIXTURE WITH AN EFFECTIVE AMOUNT OF A PARTICULATE MATERIAL IN SAID MIXTURE TO REDUCE THE STATIC PROPERTIES OF SAID SHEET.
Claim 3
Dependent Claim
28 words
A transparency as set forth in claim 1 wherein said particulate material is present in an amount of between about 1 to 20% by weight of said resins.
Claim 4
Dependent Claim
18 words
A transparency as set forth in claim 1 wherein said particulate material is asbestos, silica or colloidal silica.
Claim 5
Dependent Claim
17 words
A transparency as set forth in claim 1 wherein said thermoplastic film sheet is polysulfone or polycarbonate.
Claim 6
Dependent Claim
24 words
A transparency as set forth in claim 1 wherein said coating on said sheet has a thickness of between about 0.1 and 0.7 mils.
Claim 7
Dependent Claim
91 words
A transparency for the formation of an adherent, multi-colored electrostatic image thereon comprising a thermoplastic film sheet, said sheet having at least one surface coated with a mixture which comprises an acrylic resin and a vinyl chloride-acetate copolymer resin in a weight ratio of between about 6:4 and 7:3, a wetting agent in an amount of between about 2.5 to 25% by weight of said mixture and a particulate material in an amount of between 1 to 20% by weight of said resins to reduce the static properties of said sheet.
Claim 8
Dependent Claim
91 words
A transparency for the formation of an adherent, multi-colored electrostatic image thereon comprising a thermoplastic film sheet, said sheet having at least one surface coated with a mixture which comprises an acrylic resin and a vinyl chloride-acetate copolymer resin in a weight ratio of between about 6:4 and 7:3, a wetting agent in an amount of between about 2.5 to 25% by weight of said mixture and a particulate material in an amount of between 1 to 20% by weight of said resins to reduce the static properties of said sheet.
Claim 9
Dependent Claim
18 words
A transparency as set forth in claim 6 wherein said particulate material is asbestos, silica or colloidal silica.
Claim 10
Dependent Claim
17 words
A transparency as set forth in claim 6 wherein said thermoplastic film sheet is polysulfone or polycarbonate.
Claim 11
Dependent Claim
24 words
A transparency as set forth in claim 6 wherein said coating on said sheet has a thickness of between about 0.1 and 0.7 mils.
Claim 12
Independent Claim
113 words
A method of xerographically preparing a color transparency copy comprising: a. forming a single color powder image of a multi-colored original to be reproduced; b. transferring the powder image to a transparency comprising a thermoplastic film sheet, said sheet having at least one surface coated with a mixture which comprises an acrylic resin, and a vinyl chloride-acetate copolymer resin in a weight ratio of between about 6:4 and 7:3, a wetting agent in an amount between about 2.5 to 25% by weight of said mixture with an effective amount of a particulate material in said mixture to reduce the static properties of said sheet; and c. fixing the powder image on the transparency.
Claim 13
Independent Claim
113 words
A method of xerographically preparing a color transparency copy comprising: a. forming a single color powder image of a multi-colored original to be reproduced; b. transferring the powder image to a transparency comprising a thermoplastic film sheet, said sheet having at least one surface coated with a mixture which comprises an acrylic resin, and a vinyl chloride-acetate copolymer resin in a weight ratio of between about 6:4 and 7:3, a wetting agent in an amount between about 2.5 to 25% by weight of said mixture with an effective amount of a particulate material in said mixture to reduce the static properties of said sheet; and c. fixing the powder image on the transparency.
Claim 14
Dependent Claim
48 words
The method of claim 10 wherein the steps of powder image formation and transfer are repeated before the fixing step, each sequence corresponding to the formation of a different color to effect multi-color reproduction, said transfer of each developed electrostatic image taking place in registration on the transparency.
Claim 15
Dependent Claim
14 words
The method of claim 10 wherein the fixing is carried out by vapor fusion.
Claim 16
Dependent Claim
29 words
The method of claim 10 wherein the transparency used in transfer step contains particulate material in an amount of about 1 to 20% by weight of the resin material.
Claim 17
Dependent Claim
25 words
The method of claim 10 wherein the coating on the transparency used in the transfer step has a thickness of about 0.1 to 0.7 mils.
Claim 18
Dependent Claim
23 words
The method of claim 10 wherein the transparency used in the transfer step contains asbestos, silica or colloidal silica as a bulking agent.
Claim 19
Dependent Claim
22 words
The method of claim 10 wherein the transparency used in the transfer step is a thermoplastic film sheet of polysulfone or polycarbonate.
Claim 20
Dependent Claim
56 words
The method of claim 10 wherein the step of forming a single color powder image comprises: a. exposing a charged photoconductive member to a filtered light image of the multi-colored original to record a single color electrostatic latent image thereon; and b. developing the single color electrostatic latent image with toner particles complementary in color thereto.
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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) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |