Patent US3664299A successfully refreshed from Google Patents.
US3664299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrostatic recording paper toner section
Assignee: Revvity Inc
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Filing: 1970-12-07
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Granted: 1972-05-23
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Expires: 1990-12-07
Abstract
Abstract A toner section is provided incorporating a pair of auger members moving a toner and iron filing mixture past the surface of the magnetic brush roller in which the toner mixture adheres to the magnetic brush roller at a desired thickness pursuant to the action of a stripper blade. Entrance means is provided to receive toner directly into the toner compartment where it is mixed with the iron filings and conveyed to the magnetic brush roller.
Inventors
- 👤 David Shaler
- 👤 Ralph A Varrichio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:25
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/09
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
206 words
An electrostatic recording paper toner section readily replenishable with toner powder comprising a toner compartment, a cover member for the toner compartment including means defining a longitudinally extending magnetic brush roller opening therein, a pair of augers rotatably supported in the toner compartment, a magnetic brush roller supported in the toner compartment in parallel relationship with the augers, the magnetic brush roller supported so that its upper surface projects through the magnetic brush roller opening in the cover member, motor drive means for the augers and the magnetic brush roller, a separator plate member extending from the bottom of the toner compartment at least approximately to the cover member, means defining an opening at both ends of the separator plate, the opening at one end of said separator plate is a stepped opening while the opening at the other end of said plate is of generally rectangular shape, a caliper bar and end stripper positioned within the toner compartment adjacent the bottom edge of the magnetic brush roller in spaced relationship therewith, a stripper bar positioned within the toner compartment adjacent the top edge of the magnetic brush roller in contact therewith, and means defining a toner filler opening through the top of the cover member.
Claim 2
Dependent Claim
206 words
An electrostatic recording paper toner section readily replenishable with toner powder comprising a toner compartment, a cover member for the toner compartment including means defining a longitudinally extending magnetic brush roller opening therein, a pair of augers rotatably supported in the toner compartment, a magnetic brush roller supported in the toner compartment in parallel relationship with the augers, the magnetic brush roller supported so that its upper surface projects through the magnetic brush roller opening in the cover member, motor drive means for the augers and the magnetic brush roller, a separator plate member extending from the bottom of the toner compartment at least approximately to the cover member, means defining an opening at both ends of the separator plate, the opening at one end of said separator plate is a stepped opening while the opening at the other end of said plate is of generally rectangular shape, a caliper bar and end stripper positioned within the toner compartment adjacent the bottom edge of the magnetic brush roller in spaced relationship therewith, a stripper bar positioned within the toner compartment adjacent the top edge of the magnetic brush roller in contact therewith, and means defining a toner filler opening through the top of the cover member.
Claim 3
Dependent Claim
26 words
An electrostatic recording paper toner section according to claim 1 in which one of the augers has a larger diameter than the other of the augers.
Claim 4
Dependent Claim
21 words
An electrostatic recording paper toner section according to claim 2 in which the small auger is adjacent said magnetic brush roller.
Claim 5
Dependent Claim
27 words
An electrostatic recording paper toner section according to claim 1 in which the means defining a toner opening is located at one end of the toner compartment.
Claim 6
Dependent Claim
39 words
An electrostatic recording paper toner section according to claim 1 in which the means defining a toner opening is located at one end of the toner compartment over the end of the auger driving toner away from said opening.
Claim 7
Dependent Claim
21 words
An electrostatic recording paper toner section according to claim 1 in which the toner compartment contains iron filings coated with toner.
Claim 8
Dependent Claim
48 words
An electrostatic recording paper toner section according to claim 6 in which said stripper bar is spaced a predetermined distance from said magnetic brush roller thus providing an evenly distributed coating of uniform thickness of iron filings coated with toner on the surface of said magnetic brush roller.
Claim 9
Dependent Claim
38 words
An electrostatic recording paper toner section according to claim 1 wherein the means defining a toner opening is located at one end of the toner compartment over the end of the auger driving toner away from said opening.
Claim 10
Dependent Claim
81 words
An electrostatic recording paper toner section according to cLaim 8 in which one of the augers has a larger diameter than the other of the augers, the small auger is adjacent said magnetic brush roller, the toner compartment contains iron filings coated with toner and said stripper bar is spaced a predetermined distance from said magnetic brush roller thus providing an evenly distributed coating of uniform thickness of iron filings coated with toner on the surface of said magnetic brush roller.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |