Patent US3932910A successfully refreshed from Google Patents.
US3932910A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toner cleaning apparatus in electrophotographic copying machine
Assignee: Konica Minolta Inc
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Filing: 1974-09-10
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Granted: 1976-01-20
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Expires: 1994-09-10
Abstract
Abstract An improved cleaning apparatus for an electrophotographic copying device which comprises (a) a cleaning brush, (b) a casing for said brush having a front end portion which forms a first opening and a rear end portion which forms a second opening adapted to pass a toner therethrough, said brush within said casing and positioned adjacent said first opening so as to be adapted to contact a work surface, (c) a filter bag having a rim which forms an opening adapted to pass toner therethrough and which substantially overlaps said rear end portion, whereby a gap is formed between said rear end portion and said rim, and (d) means for suction of toner-containing air through said filter bag.
Inventors
- 👤 Kazuho Shimoda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:05
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/10; G03G21/12; Y; Y10; Y10S; Y10S55/00; Y10S55/29
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
An improved cleaning apparatus for an electrophotographic copying device which comprises (a) a cleaning brush, (b) a casing for said brush having a front end portion which forms a first opening and a rear end portion which forms a second opening adapted to pass a toner therethrough, said brush within said casing and positioned adjacent said first opening so as to be adapted to contact a work surface, (c) a filter bag having a rim which forms an opening adapted to pass toner therethrough and which substantially overlaps said rear end portion, said filter bag opening being substantially larger than said second opening whereby a gap is formed between said rear end portion and said rim, and (d) means for producing suction through said casing into and through said filter bag to carry toner-containing air.
Claim 2
Dependent Claim
135 words
An improved cleaning apparatus for an electrophotographic copying device which comprises (a) a cleaning brush, (b) a casing for said brush having a front end portion which forms a first opening and a rear end portion which forms a second opening adapted to pass a toner therethrough, said brush within said casing and positioned adjacent said first opening so as to be adapted to contact a work surface, (c) a filter bag having a rim which forms an opening adapted to pass toner therethrough and which substantially overlaps said rear end portion, said filter bag opening being substantially larger than said second opening whereby a gap is formed between said rear end portion and said rim, and (d) means for producing suction through said casing into and through said filter bag to carry toner-containing air.
Claim 3
Dependent Claim
58 words
A cleaning apparatus in electrophotographic copying machine according to claim 1 further comprising means for moving said filterbag from a first position in which said rear end portion of said casing and said rim of said filterbag overlap with each other to a second position in which said rear end portion and said rim are out of overlap-relationship.
References Cited (Backward Citations)
US3795025A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |