Patent US5103261A successfully refreshed from Google Patents.
US5103261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamshell type color image forming apparatus
Assignee: Konica Minolta Inc
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Filing: 1990-07-17
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Granted: 1992-04-07
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Expires: 2010-07-17
Abstract
Abstract A camshell type photoelectric color image printer includes a photoreceptor for holding a latent image on its surface, a charger for charging the surface of the photoreceptor, a laser writer for forming a latent image on the charged surface of the photoreceptor, plural developers for developing the latent image with color toners, a transfer drum for holding a recording sheet on which the developed latent image is transferred, a cleaner for cleaning residual toner on the photoreceptor, and a cartridge which holds the photoreceptor, the developers, the cleaner and the transfer unit. The developers are located under the photoreceptor, and the cartridge is removable from the color image printer. An upper part of the color image printer is movable relative to the main body of the printer. The transfer drum is located at an upper position of the photoreceptor in the printer, so that a recording sheet can be easily removed from the printer when the recording sheet is jammed in a circumferential portion of the transfer drum.
Inventors
- 👤 Shunji Matsuo
- 👤 Shizuo Morita
- 👤 Satoshi Heneda
- 👤 Masakazu Fukuchi
- 👤 Seiko Nagamuma
- 👤 Masahiko Itaya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:31
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1803; G03G21/1807; G03G15/00; G03G15/01; G03G21/1604; G03G21/1623; G03G21/1633; G03G21/1661; G03G21/168; G03G2221/00; G03G2221/16; G03G2221/1603; G03G2221/1642; G03G2221/1651; G03G2221/1672; G03G2221/1675; G03G2221/1678; G03G2221/1687; G03G2221/18; G03G2221/183
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
282 words
A clamshell type color image forming apparatus, comprising: latent image holding means for holding a latent image on a surface thereof, said latent image holding means having an upper portion and a lower portion; charging means for charging said surface of said latent image holding means; forming means for forming said latent image on said charged surface of said latent image holding means; developing means including a plurality of developing units respectively having color toners for respectively developing said latent image with said color toners; releasable recording sheet positioning means for positioning and holding a recording sheet, onto which said developed latent image is to be transferred, adjacent to said latent image holding means; cleaning means for cleaning residual toner from said latent image holding means after said developed latent image has been transferred; an upper housing and a lower housing, said upper housing being movably mounted on said lower housing; removable cartridge means mounted in said lower housing for removably holding said latent image holding means, said developing means said cleaning means and said releasable recording sheet positioning means therein; said developing means being positioned under said lower portion of said latent image holding means; said cartridge means being removable as a unit from said lower housing; said releasable recording sheet positioning means being positioned adjacent said upper portion of said latent image holding means, said releasable recording sheet positioning means including means for separating from the latent image holding means responsive to movement of said upper housing away from said lower housing and for releasing said recording sheet positioning means to allow said recording sheet to be removed from said color image forming apparatus when said recording sheet is jammed.
Claim 2
Dependent Claim
282 words
A clamshell type color image forming apparatus, comprising: latent image holding means for holding a latent image on a surface thereof, said latent image holding means having an upper portion and a lower portion; charging means for charging said surface of said latent image holding means; forming means for forming said latent image on said charged surface of said latent image holding means; developing means including a plurality of developing units respectively having color toners for respectively developing said latent image with said color toners; releasable recording sheet positioning means for positioning and holding a recording sheet, onto which said developed latent image is to be transferred, adjacent to said latent image holding means; cleaning means for cleaning residual toner from said latent image holding means after said developed latent image has been transferred; an upper housing and a lower housing, said upper housing being movably mounted on said lower housing; removable cartridge means mounted in said lower housing for removably holding said latent image holding means, said developing means said cleaning means and said releasable recording sheet positioning means therein; said developing means being positioned under said lower portion of said latent image holding means; said cartridge means being removable as a unit from said lower housing; said releasable recording sheet positioning means being positioned adjacent said upper portion of said latent image holding means, said releasable recording sheet positioning means including means for separating from the latent image holding means responsive to movement of said upper housing away from said lower housing and for releasing said recording sheet positioning means to allow said recording sheet to be removed from said color image forming apparatus when said recording sheet is jammed.
Claim 3
Dependent Claim
85 words
A clamshell type color image forming apparatus according to claim 1, further comprising; supporting means for pivotally supporting said releasable recording sheet positioning means; and wherein said releasable recording sheet positioning means is rotatable on said supporting means as a fulcrum, said releasable recording sheet positioning means separating from said latent image holding means upon movement of said upper housing relative to said lower housing so that said recording sheet can be removed from said color image forming apparatus when said recording sheet is jammed.
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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) | 1995-04-07 | 1995-10-07 | 1996-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-04-07 | 1999-10-07 | 2000-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-04-07 | 2003-10-07 | 2004-04-07 | $7700.00 | Window Closed / Lapsed |