Patent US4087279A successfully refreshed from Google Patents.
US4087279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for toning tacky surfaces
Assignee: EIDP Inc
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Filing: 1975-08-18
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Granted: 1978-05-02
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Expires: 1995-08-18
Abstract
Abstract A method is described for the development of a surface having imagewise tacky and nontacky areas comprising arranging toner particles in the form of an elongated mound on a section of said surface and then distributing said toner particles over said surface by pushing the elongated mound across the surface with at least one pad with at least a portion of the mound beneath the leading edge of the pad, whereby the distributed toner particles become imagewise adhered to said surface. A toner applicator comprising a housing for containment of toner, at least one free-moving weight within said housing for breaking up toner aggregates and agitating the toner, means to release toner from the housing, and at least two hinged pads mounted on the housing, is particularly adapted to carry out the method of development.
Inventors
- 👤 Helmut Gustav Sandner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:34
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03F; G03F7/00; G03F7/26; G03F7/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
85 words
A method for development of a surface having imagewise tacky and nontacky areas comprising arranging toner particles in the form of at least one elongated mound directly on a section of said surface and then distributing said toner particles over said surface by pushing the elongated mound of toner particles across said surface with at least one pad having a resilient underlayer with at least a portion of the mound beneath the pad, whereby the distributed toner particles become imagewise adhered to said tacky surface.
Claim 2
Independent Claim
85 words
A method for development of a surface having imagewise tacky and nontacky areas comprising arranging toner particles in the form of at least one elongated mound directly on a section of said surface and then distributing said toner particles over said surface by pushing the elongated mound of toner particles across said surface with at least one pad having a resilient underlayer with at least a portion of the mound beneath the pad, whereby the distributed toner particles become imagewise adhered to said tacky surface.
Claim 3
Dependent Claim
21 words
A method according to claim 1 wherein said surface comprises an imagewise exposed photohardenable layer having imagewise tacky and nontacky areas.
Claim 4
Dependent Claim
35 words
A method according to claim 1 wherein said elongated mound of toner particles contains an excess of toner particles over the amount required for development of the surface over which the toner particles are distributed.
Claim 5
Dependent Claim
36 words
A method according to claim 1 wherein said pad is pushed across said surface in a curvilinear path with a rocking motion, said elongated mound of toner particles being pushed along in front of said pad.
Claim 6
Dependent Claim
21 words
A method according to claim 4 wherein two elongated mounds of toner particles are pushed by a pair of parallel pads.
Claim 7
Dependent Claim
70 words
A method according to claim 1 wherein arranging the toner particles is preceded by depositing them on the surface by releasing the particles from a toner applicator apparatus comprising a housing for containment of toner, at least one free moving weight within said housing for breaking up toner aggregates and agitating the toner, means to release toner from the housing, and at least two hinged pads mounted on the housing.
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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) | 1981-05-01 | 1981-10-31 | 1982-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-05-01 | 1985-10-31 | 1986-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-05-01 | 1989-10-31 | 1990-05-02 | $7700.00 | Window Closed / Lapsed |