US3613636A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrographic developer
Assignee: Xerox Corp
•
Filing: 1969-03-10
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Granted: 1971-10-19
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Expires: 1989-03-10
Abstract
Abstract A pretoned web mounted upon a supply roll and a takeup roll to form a cassette permits controlled deposition of toner onto a fibrous member by means of mechanical, electrical and triboelectrical forces.
Inventors
- 👤 Nicholas M Soures
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:53
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/0805; G03G15/0822; G03G15/0848; G03G15/0849; G03G15/0855; G03G15/0865
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
116 words
Apparatus for transferring electroscopic developer particles to a charged surface for the development of a latent image thereon comprising: first means having a first layer carrying a uniform amount of said electroscopic developer particles throughout its length and having a second layer adapted to carry a bias potential thereon, a source of voltage for applying a bias potential to said second layer, and second means having a fibrous surface in contact with said first layer adapted to collect a uniform amount of said developer particles from said first layer and coacting with a bias potential on said second layer to deposit said developer particles on to said charged surface whereby the latent image thereon is developed.
Claim 2
Dependent Claim
116 words
Apparatus for transferring electroscopic developer particles to a charged surface for the development of a latent image thereon comprising: first means having a first layer carrying a uniform amount of said electroscopic developer particles throughout its length and having a second layer adapted to carry a bias potential thereon, a source of voltage for applying a bias potential to said second layer, and second means having a fibrous surface in contact with said first layer adapted to collect a uniform amount of said developer particles from said first layer and coacting with a bias potential on said second layer to deposit said developer particles on to said charged surface whereby the latent image thereon is developed.
Claim 3
Dependent Claim
121 words
Apparatus for transferring electroscopic developer particles to a charged surface for the development of a latent image thereon comprising: a supply roll, a takeup roll, a web mounted on said supply and takeup rolls said web comprising a first layer coated with said developer particles and a second layer capable of carrying a bias potential, a source of voltage for applying a bias potential to said second layer, and a fibrous member in contact with said coated layer of said web adapted to collect a predetermined amount of said developer particles therefrom and in conjunction with the bias potential on said second layer to deposit said developer particles uniformly on to said charged surface whereby the latent image thereon is developed.
Claim 4
Dependent Claim
121 words
Apparatus for transferring electroscopic developer particles to a charged surface for the development of a latent image thereon comprising: a supply roll, a takeup roll, a web mounted on said supply and takeup rolls said web comprising a first layer coated with said developer particles and a second layer capable of carrying a bias potential, a source of voltage for applying a bias potential to said second layer, and a fibrous member in contact with said coated layer of said web adapted to collect a predetermined amount of said developer particles therefrom and in conjunction with the bias potential on said second layer to deposit said developer particles uniformly on to said charged surface whereby the latent image thereon is developed.
Claim 5
Dependent Claim
18 words
The apparatus of claim 2 wherein said fibrous member is a cylinder having fur mounted on its surface.
Claim 6
Dependent Claim
28 words
The apparatus of claim 3 wherein said supply and takeup rolls of said web are mounted in a cassette so that the consumed web is discarded and replaced.
Claim 7
Dependent Claim
18 words
The apparatus of claim 4 and further comprising a web of electrostatic recording paper bearing said charged surface.
Claim 8
Dependent Claim
47 words
The apparatus of claim 5 and further comprising a drive train coupled to said takeup roll, said fibrous member and said electrostatic paper web whereby said fibrous member picks up a controlled amount of said particles in synchronism with the incremental movement of said electrostatic paper web.
Claim 9
Dependent Claim
59 words
The apparatus of claim 6 wherein said particles, said pretoned web and said fibrous member are arranged in the triboelectric series whereby said particles are attracted in sequence from said pretoned web to said fibrous member and then to said charged surface and whereby said fibrous member attracts said particles away from the uncharged areas of said charged surface.
References Cited (Backward Citations)
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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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |