US5321469A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gearing arrangement for driving a photo-sensitive drum of an electro-photography process unit
Assignee: Samsung Electronics Co Ltd
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Filing: 1992-11-13
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Granted: 1994-06-14
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Expires: 2012-11-13
Abstract
Abstract A gearing arrangement for driving a photosensitive drum of an electrophotography process unit including a first drum gear mounted on one end of a shaft of a photosensitive drum for receiving the motion of a drive gear of a motor, a second drum gear mounted on the other end of the shaft of the photosensitive drum, a first gearing assembly connected with the first drum gear, and a second gearing assembly connected with the second drum gear, wherein the first and second gearing assemblies serve to uniformly distribute the torque of the drive gear.
Inventors
- 👤 Byeong-Sun Ahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:40
CPC Classifications
G; G03; G03G; G03G15/00; G03G21/00; G03G21/16; G03G21/18; G03G21/1839; G03G21/1867; G03G15/75; G03G15/757; G03G21/1642; G03G21/1647; G03G2221/00; G03G2221/16; G03G2221/1651; G03G2221/1657; G03G2221/18; G03G2221/183
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
149 words
A gearing arrangement for driving a photosensitive drum of an electrophotography process unit comprising: a first drum gear mounted on a first end of a shaft of said photosensitive drum for receiving motion of a drive gear of a motor; a second drum gear mounted on a second end of said shaft of said photosensitive drum; first gearing means connected with said first drum gear, said first gearing means comprising: a first magnet roll gear of a magnet roll of a developer engaged with said first drum gear; second gearing means connected with said second drum gear, wherein said first and second gearing means serve to uniformly distribute the torque of said drive gear, said second gearing means comprising: a plurality of idler gears connected to said second drum gear wherein said plurality of idler gears speed-up a second magnet roll gear of said magnet roll of said developer.
Claim 2
Dependent Claim
149 words
A gearing arrangement for driving a photosensitive drum of an electrophotography process unit comprising: a first drum gear mounted on a first end of a shaft of said photosensitive drum for receiving motion of a drive gear of a motor; a second drum gear mounted on a second end of said shaft of said photosensitive drum; first gearing means connected with said first drum gear, said first gearing means comprising: a first magnet roll gear of a magnet roll of a developer engaged with said first drum gear; second gearing means connected with said second drum gear, wherein said first and second gearing means serve to uniformly distribute the torque of said drive gear, said second gearing means comprising: a plurality of idler gears connected to said second drum gear wherein said plurality of idler gears speed-up a second magnet roll gear of said magnet roll of said developer.
Claim 3
Dependent Claim
203 words
A gearing arrangement for driving a photosensitive drum of an electrophotography process unit comprising: a first drum gear mounted on a first end of a shaft of said photosensitive drum for receiving motion of a drive gear of a motor; a second drum gear mounted on a second side of said shaft of said photosensitive drum; first gearing means connected to said first drum gear, said first gearing means comprising: developer drive means; a first magnet roll gear of a magnet roll of said developer drive means, said first magnet roll gear connected with said first drum gear; a first idler gear; intermediate gearing means connecting said first magnet roll gear with said developer drive means and said first idler gear; second gearing means connected to said second drum gear, wherein said first and second gearing means serve to uniformly distribute the torque of said drive gear, said second gearing means comprising: a second idler gear connected with said second drum gear; a third idler gear connected with said second idler gear; a fourth idler gear connected with said third idler gear; and a second magnet roll gear of said magnet roll, said second magnet roll gear connected with said fourth idler gear.
Claim 4
Dependent Claim
203 words
A gearing arrangement for driving a photosensitive drum of an electrophotography process unit comprising: a first drum gear mounted on a first end of a shaft of said photosensitive drum for receiving motion of a drive gear of a motor; a second drum gear mounted on a second side of said shaft of said photosensitive drum; first gearing means connected to said first drum gear, said first gearing means comprising: developer drive means; a first magnet roll gear of a magnet roll of said developer drive means, said first magnet roll gear connected with said first drum gear; a first idler gear; intermediate gearing means connecting said first magnet roll gear with said developer drive means and said first idler gear; second gearing means connected to said second drum gear, wherein said first and second gearing means serve to uniformly distribute the torque of said drive gear, said second gearing means comprising: a second idler gear connected with said second drum gear; a third idler gear connected with said second idler gear; a fourth idler gear connected with said third idler gear; and a second magnet roll gear of said magnet roll, said second magnet roll gear connected with said fourth idler gear.
Claim 5
Independent Claim
189 words
A method for driving a photosensitive drum of an electrophotography process unit, comprising: rotating a drive gear using a drive motor; rotating first and second drum gears via engagement of said drive gear with said first drum gear; rotating a magnet roll of a developer via engagement of a first magnet roll gear with said first drum gear; transmitting torque of said first magnet roll gear to a first idler gear through intermediate gear means; rotating a second idler gear via engagement of said second drum gear with said second idler gear; rotating a third idler gear via engagement of said second idler gear with said third idler gear; rotating a fourth idler gear via engagement of said third idler gear with said fourth idler gear; rotating a second magnet roll gear via engagement of said fourth idler gear with said second magnet roll gear; uniformly distributing torque of said drive gear through use of said first and second drum gears, said intermediate gear means, said first idler gear, said second idler gear, said third idler gear, said fourth idler gear, and said first and second magnet roll gears.
Claim 6
Independent Claim
189 words
A method for driving a photosensitive drum of an electrophotography process unit, comprising: rotating a drive gear using a drive motor; rotating first and second drum gears via engagement of said drive gear with said first drum gear; rotating a magnet roll of a developer via engagement of a first magnet roll gear with said first drum gear; transmitting torque of said first magnet roll gear to a first idler gear through intermediate gear means; rotating a second idler gear via engagement of said second drum gear with said second idler gear; rotating a third idler gear via engagement of said second idler gear with said third idler gear; rotating a fourth idler gear via engagement of said third idler gear with said fourth idler gear; rotating a second magnet roll gear via engagement of said fourth idler gear with said second magnet roll gear; uniformly distributing torque of said drive gear through use of said first and second drum gears, said intermediate gear means, said first idler gear, said second idler gear, said third idler gear, said fourth idler gear, and said first and second magnet roll gears.
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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) | 1997-06-13 | 1997-12-13 | 1998-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-13 | 2001-12-13 | 2002-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-13 | 2005-12-13 | 2006-06-14 | $7700.00 | Window Closed / Lapsed |