US4332851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Receptor sheet for electrophotography
Assignee: Xerox Corp
•
Filing: 1980-03-11
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Granted: 1982-06-01
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Expires: 2000-03-11
Abstract
Abstract A coated paper suitable for use in an electrophotographic process for receiving an image formed by a magnetic brush device with a single component developer is disclosed. The paper is coated with a composition made of a styrene/butadiene latex and a crosslinking agent for the latex, together with any desired pigment and nonionic emulsifier. The composition may be economically coated onto paper at an amount about 1 to 5 grams per square meter.
Inventors
- 👤 Hiroyoshi Hosomura
- 👤 Koichi Aota
- 👤 Eiji Yoshimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:43
CPC Classifications
G; G03; G03G; G03G7/00; G03G7/0006; G03G7/002; G03G7/0013; G03G7/0026; G03G7/004; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/252; Y10T428/258; Y10T428/27; Y10T428/273; Y10T428/277; Y10T428/31504; Y10T428/31971; Y10T428/31993
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
84 words
A coated paper suitable for use in an electrophotographic process for receiving an image formed by a magnetic brush device with a single component developer, said paper having a surface coated with a composition comprising about 100 parts by weight of a styrene/butadiene latex with 40 parts by weight of a melamine-formaldehyde resin as a crosslinking agent, and about 50 parts by weight of calcium carbonate as a pigment, said coating composition being coated on paper at an amount of about 3 grams/square meter.
Claim 2
Dependent Claim
84 words
A coated paper suitable for use in an electrophotographic process for receiving an image formed by a magnetic brush device with a single component developer, said paper having a surface coated with a composition comprising about 100 parts by weight of a styrene/butadiene latex with 40 parts by weight of a melamine-formaldehyde resin as a crosslinking agent, and about 50 parts by weight of calcium carbonate as a pigment, said coating composition being coated on paper at an amount of about 3 grams/square meter.
Claim 3
Dependent Claim
23 words
A coated paper according to claim 1 wherein the styrene content in said styrene/butadiene latex is less than about 50 percent by weight.
Claim 4
Dependent Claim
23 words
A coated paper according to claim 1 wherein the coating composition further comprises a non-ionic surfactant as an emulsifier for said styrene/butadiene latex.
Claim 5
Dependent Claim
85 words
A coated paper suitable for use in an electrophotographic process for receiving an image formed by a magnetic brush device with a single component developer, said paper having a surface coated with a composition comprising about 100 parts by weight of a styrene/butadiene latex, about 50 parts by weight of a melamine-formaldehyde resin as a crosslinking agent and about 25 parts by weight of a kaolin clay as a pigment, said coating composition being coated on paper at an amount of about 3 grams/square meter.
Claim 6
Dependent Claim
85 words
A coated paper suitable for use in an electrophotographic process for receiving an image formed by a magnetic brush device with a single component developer, said paper having a surface coated with a composition comprising about 100 parts by weight of a styrene/butadiene latex, about 50 parts by weight of a melamine-formaldehyde resin as a crosslinking agent and about 25 parts by weight of a kaolin clay as a pigment, said coating composition being coated on paper at an amount of about 3 grams/square meter.
Claim 7
Dependent Claim
23 words
A coated paper according to claim 1, wherein the styrene content in said styrene/butadiene latex is less than about 50 percent by weight.
Claim 8
Dependent Claim
23 words
A coated paper according to claim 5 wherein the coating compositions further comprises a non-ionic surfactant as an emulsifier for said styrene/butadiene latex.
Claim 9
Dependent Claim
85 words
A coated paper suitable for use in an electrophotographic process for receiving an image formed by a magnetic brush device with a single component developer, said paper having a surface coated with a composition comprising about 100 parts by weight of a styrene/butadiene latex, about 10 parts by weight of a urea-formaldehyde resin as a crosslinking agent, and about 70 parts by weight of a kaolin clay as a pigment, said coating composition being coated on paper at an amount of about 4 grams/square meter.
Claim 10
Dependent Claim
85 words
A coated paper suitable for use in an electrophotographic process for receiving an image formed by a magnetic brush device with a single component developer, said paper having a surface coated with a composition comprising about 100 parts by weight of a styrene/butadiene latex, about 10 parts by weight of a urea-formaldehyde resin as a crosslinking agent, and about 70 parts by weight of a kaolin clay as a pigment, said coating composition being coated on paper at an amount of about 4 grams/square meter.
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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) | 1985-05-31 | 1985-11-30 | 1986-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-31 | 1989-11-30 | 1990-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-31 | 1993-11-30 | 1994-06-01 | $7700.00 | Window Closed / Lapsed |