Patent US5339133A successfully refreshed from Google Patents.
US5339133A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image forming apparatus including process cartridge with magnetic connector
Assignee: Konica Minolta Inc
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Filing: 1993-05-11
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Granted: 1994-08-16
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Expires: 2013-05-11
Abstract
Abstract An image forming machine in which a detachable process cartridge having a photoreceptor drum is provided. On the frame of the process cartridge, a magnetic connector is provided, in which a magnet and an outer plate surrounding the magnet are assembled, and a leaf spring is provided between the frame and the magnet. The process cartridge is positively grounded through the magnetic connector when the process cartridge is fully inserted into the main body of the machine, due to the magnetic connection to a plate of the main body.
Inventors
- 👤 Naoki Otomo
- 👤 Atsuo Ohmura
- 👤 Toshio Shida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:29
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1839; G03G21/1867; G03G21/1871; G03G21/1604; G03G21/1623; G03G2221/00; G03G2221/16; G03G2221/1603; G03G2221/1651; G03G2221/166
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
An image forming apparatus comprising: (a) a process cartridge including at least a photoreceptor, detachably mountable on a main body of said apparatus; (b) a magnetic connector provided on said process cartridge; and (c) a plate member provided on said main body, onto which said magnetic connector is connected when said process cartridge is inserted into said main body, said process cartridge being thereby grounded to said main body, and said photoreceptor being grounded through said magnetic connector, said magnetic connector comprising a magnet, outer plate surrounding said magnet, and a spring member provided between said magnet and a frame provided on said process cartridge for mounting said magnetic connector to said process cartridge, there being electric continuity between said outer plate and said frame through said spring member.
Claim 2
Dependent Claim
129 words
An image forming apparatus comprising: (a) a process cartridge including at least a photoreceptor, detachably mountable on a main body of said apparatus; (b) a magnetic connector provided on said process cartridge; and (c) a plate member provided on said main body, onto which said magnetic connector is connected when said process cartridge is inserted into said main body, said process cartridge being thereby grounded to said main body, and said photoreceptor being grounded through said magnetic connector, said magnetic connector comprising a magnet, outer plate surrounding said magnet, and a spring member provided between said magnet and a frame provided on said process cartridge for mounting said magnetic connector to said process cartridge, there being electric continuity between said outer plate and said frame through said spring member.
References Cited (Backward Citations)
JPH04127166A
Cited
US5210574A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-08-15 | 1998-02-14 | 1998-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-08-15 | 2002-02-14 | 2002-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-08-15 | 2006-02-14 | 2006-08-16 | $7700.00 | Window Closed / Lapsed |