US5041871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clam shell type image forming apparatus
Assignee: Konica Minolta Inc
•
Filing: 1990-10-23
•
Granted: 1991-08-20
•
Expires: 2010-10-23
Abstract
Abstract An image recording apparatus divided into an upper portion and a lower portion. The photosensitive drum is in the upper portion, and the transfer belt unit and photographic fixing unit are on a unit mount plate in the lower portion. Protrusions are provided in the lower portion to position the unit mount plate and the transfer belt unit and photographic fixing unit which it carries. A spring member is also provided on the upper portion in a position corresponding to the photographic fixing unit. As a result, the mount plate is so positioned on the lower portion that, when the upper and lower portions are closed, the photographic fixing unit is pushed down by the spring member and the transfer belt unit is pushed down by the photosensitive drum.
Inventors
- 👤 Masayuki Hata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:13
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/1604; G03G21/1623; G03G21/1638; G03G15/00; G03G15/20; G03G15/2003; G03G15/2014; G03G15/2064; G03G21/1628; G03G2221/00; G03G2221/16; G03G2221/1639; G03G2221/1642; G03G2221/1651; G03G2221/1654; G03G2221/1678; G03G2221/1687; G03G2221/18
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
130 words
An image recording apparatus whose body can be divided into an upper portion and a lower portion, comprising; (1) a photosensitive drum arranged on said upper portion; (2) a transfer belt unit and a photographic fixing unit arranged on a unit mount plate; (3) positioning protrusions provided on said lower portion for positioning said unit mount plate; and (4) a spring member provided on said upper portion at is position corresponding to said photographic fixing unit; wherein said unit mount plate is positioned on said lower portion by said positioning protruding members and said upper portion and said lower portion are coupled to provide a unitary body, said photographic fixing unit is pushed down by said spring member and said transfer belt unit is pushed down by said photosensitive drum.
Claim 2
Dependent Claim
130 words
An image recording apparatus whose body can be divided into an upper portion and a lower portion, comprising; (1) a photosensitive drum arranged on said upper portion; (2) a transfer belt unit and a photographic fixing unit arranged on a unit mount plate; (3) positioning protrusions provided on said lower portion for positioning said unit mount plate; and (4) a spring member provided on said upper portion at is position corresponding to said photographic fixing unit; wherein said unit mount plate is positioned on said lower portion by said positioning protruding members and said upper portion and said lower portion are coupled to provide a unitary body, said photographic fixing unit is pushed down by said spring member and said transfer belt unit is pushed down by said photosensitive drum.
Claim 3
Dependent Claim
25 words
The image recording apparatus according to claim 1, wherein said unit mount plate is easily detachably mounted on said lower portion in the vertical direction.
Claim 4
Dependent Claim
42 words
The image recording apparatus according to claim 1, further comprising a pin provided on one of said upper and lower portions and a hook provided on the other of said upper and lower portions so as to be engage with said pin.
References Cited (Backward Citations)
GB2103151A
Cited
US4588280A
Cited
US4641947A
Cited
JPS60101549A
Cited
JPS60102649A
Cited
US4634264A
Cited
US4556308A
Cited
US4668072A
Cited
US4788572A
Cited
US4814817A
Cited
US4876572A
Cited
US4926219A
Cited
US4974033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-19 | 1995-02-18 | 1995-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-19 | 1999-02-18 | 1999-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-19 | 2003-02-18 | 2003-08-20 | $7700.00 | Window Closed / Lapsed |