US4757344A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imaging apparatus with detachable cartridges
Assignee: Ricoh Co Ltd
•
Filing: 1986-07-14
•
Granted: 1988-07-12
•
Expires: 2006-07-14
Abstract
Abstract Disclosed is an electronic copier, lazer printer or like imaging apparatus for developing a latent image provided on a photoconductive element by a developing device of the type using a toner cartridge, thereby turning the latent image into a visible toner image. A body of the apparatus consists of an upper part and a lower part, the former being openably supported by the latter. A positioning frame is supported by the lower body part in such a manner as to rotatable up and down. An image carrier unit which includes at least the image carrier and a developing unit which includes at least the developing device are detachably mounted on the positioning frame and mounted to and dismounted from the frame independently of each other.
Inventors
- 👤 Hiroyuki Idenawa
- 👤 Hideaki Mochimaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:01
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1839; G03G21/1842; G03G21/1853; G03G21/1604; G03G21/1623; G03G21/1628; G03G21/1661; G03G2221/00; G03G2221/16; G03G2221/1603; G03G2221/1672; G03G2221/1675; G03G2221/1678; G03G2221/1687; G03G2221/18; G03G2221/183; G03G2221/1853; G03G2221/1869
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
109 words
An imaging apparatus developing a latent image formed on an image carrier to visualize the latent image comprising: a lower housing constituting a part of a body of said apparatus; an upper housing constituting another part of said body and openably by said lower housing; a positioning frame member supported by said lower housing such that said frame member is rotatable to an upward and a downward position; a developing unit including at least a developing device; wherein said image carrier unit and said developing unit being supported by said positioning frame member and are separately detachable therefrom in both the upward and downward positions of said frame member.
Claim 2
Dependent Claim
109 words
An imaging apparatus developing a latent image formed on an image carrier to visualize the latent image comprising: a lower housing constituting a part of a body of said apparatus; an upper housing constituting another part of said body and openably by said lower housing; a positioning frame member supported by said lower housing such that said frame member is rotatable to an upward and a downward position; a developing unit including at least a developing device; wherein said image carrier unit and said developing unit being supported by said positioning frame member and are separately detachable therefrom in both the upward and downward positions of said frame member.
Claim 3
Dependent Claim
18 words
An imaging apparatus as claimed in claim 1, wherein said developing unit further comprises a detachable toner cartridge.
Claim 4
Dependent Claim
31 words
An imaging apparatus as claimed in claim 1, wherein said positioning frame member constitutes a part of a guide member for guiding recording paper which is transported toward the image carrier.
Claim 5
Dependent Claim
26 words
An imaging apparatus as claimed in claim 1, wherein said positioning frame member comprises: a separator pawl which separates a recording paper from the image carrier.
Claim 6
Dependent Claim
29 words
An imaging apparatus as claimed in claim 1, wherein said image carrier unit comprises a cleaning device for cleaning the image carrier; a charging device; and a discharging device.
References Cited (Backward Citations)
US4538896A
Cited
US4530588A
Cited
US4542976A
Cited
US4566780A
Cited
US4585324A
Cited
JPS6048067A
Cited
US4634264A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-12 | 1992-01-11 | 1992-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-12 | 1996-01-11 | 1996-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-12 | 2000-01-11 | 2000-07-12 | $7700.00 | Window Closed / Lapsed |