US4648705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning device
Assignee: Toshiba Corp
•
Filing: 1985-05-14
•
Granted: 1987-03-10
•
Expires: 2005-05-14
Abstract
Abstract A cleaning device provided in an image forming apparatus includes a cleaning blade for scraping residual developing agent from an image carrier after a sheet of paper with a visual image has been peeled from the image carrier, and an auger for moving the scraped agent to collect the same. The cleaning device further includes a shield plate provided near the cleaning blade to prevent the paper from entering the housing of the cleaning device.
Inventors
- 👤 Natsuki Tachibana
- 👤 Issey Ichihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:07
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/0005; G03G21/0011
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
181 words
A cleaning device for removing residual developing agent from the surface of an image carrier, thereby cleaning the surface, after an image has been transferred from the image carrier to a sheet of paper, said device comprising: a housing with an opening cut in one side opposing said image carrier; a cleaning blade provided within said housing and contacting at one end the surface of the image carrier for scraping residual developing agent from the surface of the image carrier; conveying means provided within said housing, below said cleaning blade, for receiving the developing agent scraped from the image carrier and conveying the same to one side of said housing; and means provided within said housing for preventing a sheet of paper from entering said housing, said sheet having been carried by the image carrier to the cleaning device and then peeled by said cleaning blade from the image carrier, said preventing means including a shield dividing said housing into a first chamber in which said cleaning blade is held and a second chamber in which said conveying means is held.
Claim 2
Dependent Claim
181 words
A cleaning device for removing residual developing agent from the surface of an image carrier, thereby cleaning the surface, after an image has been transferred from the image carrier to a sheet of paper, said device comprising: a housing with an opening cut in one side opposing said image carrier; a cleaning blade provided within said housing and contacting at one end the surface of the image carrier for scraping residual developing agent from the surface of the image carrier; conveying means provided within said housing, below said cleaning blade, for receiving the developing agent scraped from the image carrier and conveying the same to one side of said housing; and means provided within said housing for preventing a sheet of paper from entering said housing, said sheet having been carried by the image carrier to the cleaning device and then peeled by said cleaning blade from the image carrier, said preventing means including a shield dividing said housing into a first chamber in which said cleaning blade is held and a second chamber in which said conveying means is held.
Claim 3
Dependent Claim
19 words
The cleaning device according to claim 1, wherein said shield has an edge positioned close behind said cleaning blade.
Claim 4
Dependent Claim
24 words
The cleaning device according to claim 2, wherein said shield is a plate filling a gap between said cleaning blade and said conveying means.
Claim 5
Dependent Claim
27 words
The cleaning device according to claim 2, wherein said conveying means has an auger extending at right angles to the direction in which said image carrier moves.
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) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |