Patent US5143017A successfully refreshed from Google Patents.
US5143017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developing device having a baffle plate between plural augers which cleans the developing rollers
Assignee: Konica Minolta Inc
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Filing: 1991-01-24
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Granted: 1992-09-01
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Expires: 2011-01-24
Abstract
Abstract A developing apparatus having a developing roll including therein a developing sleeve and a magnet roll to be faced to an image retainer for developing an electrostatic latent image on the image retainer with a developer. A partition plate is provided between developer agitating members disposed below the developing roll. A developer removing device for removing the developer on the developing sleeve is provided on an upper portion of the partition plate.
Inventors
- 👤 Satoshi Haneda
- 👤 Masakazu Fukuchi
- 👤 Shizuo Morita
- 👤 Shunji Matsuo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:42
CPC Classifications
G; G03; G03G; G03G15/00; G03G15/06; G03G15/08; G03G15/09; G03G15/0822; G03G2215/00; G03G2215/08; G03G2215/0802; G03G2215/0816; G03G2215/0819; G03G2215/0822
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
152 words
An apparatus for developing an electrostatic latent image on an image retainer with a developer by supplying said developer to said image retainer in a downstream direction, said apparatus comprising a developing roll facing said image retainer comprising fixed magnetic poles arranged so as not to be in a position facing said partition, a first agitating member and a second agitating member disposed below said developing roll, a partition between said first member and said second member, a developer remover on an upper portion of said partition for removing said developer from said developing roll, a developer delivery portion upstream of said first agitating member, said first agitating member receiving said developer from said delivery portion and removed developer from said remover, said developer agiatated by said first member is carried to and agitated by said second member, and said developer agitated by said second member is carried to said developing roll.
Claim 2
Independent Claim
152 words
An apparatus for developing an electrostatic latent image on an image retainer with a developer by supplying said developer to said image retainer in a downstream direction, said apparatus comprising a developing roll facing said image retainer comprising fixed magnetic poles arranged so as not to be in a position facing said partition, a first agitating member and a second agitating member disposed below said developing roll, a partition between said first member and said second member, a developer remover on an upper portion of said partition for removing said developer from said developing roll, a developer delivery portion upstream of said first agitating member, said first agitating member receiving said developer from said delivery portion and removed developer from said remover, said developer agiatated by said first member is carried to and agitated by said second member, and said developer agitated by said second member is carried to said developing roll.
Claim 3
Dependent Claim
19 words
The apparatus of claim 1 wherein said partition has a hole between said first member and said second member.
Claim 4
Dependent Claim
13 words
The apparatus of claim 1 wherein said developer remover is a rubber blade.
Claim 5
Independent Claim
154 words
An apparatus for developing an electrostatic latent image on an image retainer with a developer by supplying said developer to said image retainer in a downstream direction, said apparatus comprising a developing roll facing said image retainer, a first agitating member and a second agitating member disposed below said developing roll, a partition between said first member and said second member, said partition having a Y-shaped cross section and comprising a first edge portion and a second edge portion, a developer remover being mounted on said first edge portion for removing said developer from said developing roll, a developer delivery portion upstream of said first agitating member, said first agitating member receiving said developer from said delivery portion and removed developer from said remover, said developer agitated by said first member is carried to and agiatated by said second member, and said developer agitated by said second member is carried to said developing roll.
Claim 6
Independent Claim
154 words
An apparatus for developing an electrostatic latent image on an image retainer with a developer by supplying said developer to said image retainer in a downstream direction, said apparatus comprising a developing roll facing said image retainer, a first agitating member and a second agitating member disposed below said developing roll, a partition between said first member and said second member, said partition having a Y-shaped cross section and comprising a first edge portion and a second edge portion, a developer remover being mounted on said first edge portion for removing said developer from said developing roll, a developer delivery portion upstream of said first agitating member, said first agitating member receiving said developer from said delivery portion and removed developer from said remover, said developer agitated by said first member is carried to and agiatated by said second member, and said developer agitated by said second member is carried to said developing roll.
Claim 7
Dependent Claim
25 words
The apparatus of claim 1 wherein said developing roll comprises fixed magnetic poles arranged so as not to be in the position facing said partition.
Claim 8
Dependent Claim
19 words
The apparatus of claim 4 wherein said partition has a hole between said first member and said second member.
Claim 9
Dependent Claim
13 words
The apparatus of claim 4 wherein said developer remover is a rubber blade.
Claim 10
Independent Claim
169 words
An apparatus for developing an electrostatic latent image on an image retainer with a developer by supplying said developer to said image retainer in a downstream direction, said apparatus comprising a developing roll facing said image retainer, said developing roll having magnets so positioned that no magnetic pole faces a portion between said first edge and said second edge, a first agitating member and said second agitating member disposed below said developing roll, a partition between said first member and said second member, said partition comprising a first edge portion and a second edge said developer remover being mounted on said first edge, portion for removing said developer from said developing roll, a developer delivery portion upstream of said first agitating member, said first agitating member receiving said developer from said delivery portion and removed developer from said remover, said developer agitated by said first member is carried to an agitated by said second member, and said developer agaitated by said second member is carried to said developing roll.
Claim 11
Independent Claim
169 words
An apparatus for developing an electrostatic latent image on an image retainer with a developer by supplying said developer to said image retainer in a downstream direction, said apparatus comprising a developing roll facing said image retainer, said developing roll having magnets so positioned that no magnetic pole faces a portion between said first edge and said second edge, a first agitating member and said second agitating member disposed below said developing roll, a partition between said first member and said second member, said partition comprising a first edge portion and a second edge said developer remover being mounted on said first edge, portion for removing said developer from said developing roll, a developer delivery portion upstream of said first agitating member, said first agitating member receiving said developer from said delivery portion and removed developer from said remover, said developer agitated by said first member is carried to an agitated by said second member, and said developer agaitated by said second member is carried to said developing roll.
Claim 12
Dependent Claim
19 words
The apparatus of claim 8 wherein said partition has a hole between said first member and said second member.
Claim 13
Dependent Claim
13 words
The apparatus of claim 8 wherein said developer remover is a rubber blade.
References Cited (Backward Citations)
US4162842A
Cited
US4498755A
Cited
US4435065A
Cited
US4481903A
Cited
EP0129355A2
Cited
EP0352102A2
Cited
US4996565A
Cited
EP0427499A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-01 | 1996-03-02 | 1996-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-01 | 2000-03-02 | 2000-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-01 | 2004-03-02 | 2004-09-01 | $7700.00 | Window Closed / Lapsed |