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EP0272094A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process unit for an imaging apparatus

Assignee: Xerox Corp
•
Filing: 1987-12-15
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Granted: —
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Expires: 2007-12-15
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Abstract

Abstract A process unit (1) which can be removably mounted in a main assembly (100) of a reproducing machine such as a xerographic copier. The unit comprises a housing (2) enclosing an imaging member (3) and, optionally, other processing means such as a development device (4), a cleaner (5), and a charge corotron (6). The unit also comprises an integral transfer corotron (7) which has one end (21) hingedly mounted on the housing enabling the corotron to be pivoted open for jam clearance. Preferably, the end (22) of the corotron remote from the pivoted end (21) is retained in the unit by a latch (26) which is opened automatically to release the corotron when the unit is inserted into the main assembly. A flexure (49) within the main assembly normally urges the corotron to its operative position when the unit is inserted in the main assembly, but the flexure may be withdrawn so that the corotron pivots open about its hinged end (21) to permit jam clearance. When the unit is withdrawn from the main assembly the corotron is automatically latched back into the unit housing.

Inventors

  • 👤 Alan Charles Richard Howard
  • 👤 David Michael Dr. Newbury
  • 👤 Geoffrey Watts

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-04 05:01
CPC Classifications
G; G03; G03G; G03G21/00; G03G21/16; G03G21/18; G03G21/1803; G03G21/1828; G03G21/1832; G03G21/1604; G03G21/1623; G03G21/1638; G03G2221/00; G03G2221/16; G03G2221/1606; G03G2221/1609; G03G2221/1615; G03G2221/1642; G03G2221/1651; G03G2221/1654; G03G2221/1672; G03G2221/1675; G03G2221/1693; G03G2221/18; G03G2221/183

Claims Analysis

Total Claims: 17
Claim 1
Independent Claim 29 words
A process unit adapted to be removably mounted in a main assembly of a reproducing machine, comprising a housing enclosing an imaging member, and a hingedly mounted charging device.
Claim 2
Dependent Claim 29 words
A process unit adapted to be removably mounted in a main assembly of a reproducing machine, comprising a housing enclosing an imaging member, and a hingedly mounted charging device.
Claim 3
Dependent Claim 32 words
A process unit as claimed in claim 1, wherein the charging device is elongate and is hingedly mounted at a first end, the second opposite end thereof being retained by latch means.
Claim 4
Dependent Claim 42 words
A process unit as claimed in claim 2, wherein the latch means comprises a pair of jaw members which are mutually biased together to grip the second end of the charging device when the process unit is withdrawn from the main assembly.
Claim 5
Dependent Claim 40 words
A process unit as claimed in claim 3, wherein the second end of the charging device is provided with a projecting tab adapted to be gripped by the jaw members when the process unit is withdrawn from the main assembly.
Claim 6
Dependent Claim 33 words
A process unit as claimed in any of claims 2 to 4, wherein the latch means is adapted to release the charging device when the process unit is inserted into the main assembly.
Claim 7
Dependent Claim 29 words
A process unit as claimed in any preceding claim, wherein the charging device is a transfer corotron for transferring an image from the imaging member to a copy sheet.
Claim 8
Dependent Claim 26 words
A reproducing machine comprising a main assembly, and a process unit as claimed in any preceding claim adapted to be removably mounted in said main assembly.
Claim 9
Dependent Claim 35 words
A reproducing machine as claimed in claim 7, wherein the main assembly comprises means for supporting the charging device in a predetermined location relative to the main assembly when the process unit is inserted therein.
Claim 10
Dependent Claim 15 words
A reproducing machine as claimed in claim 8, wherein the support means comprise resilient flexures.
Claim 11
Dependent Claim 63 words
A reproducing machine as claimed in claim 8 or claim 9, comprising a process unit in accordance with claim 2, wherein respective support means are provided at each of the two ends of the charging device, the support means at the second end of the charging device being withdrawable from the main assembly whereby the charging device is pivotable about the hinged end.
Claim 12
Dependent Claim 23 words
A reproducing machine as claimed in claim 10, comprising a member providing an abutment which limits the pivotal movement of the charging device.
Claim 13
Dependent Claim 66 words
A reproducing machine as claimed in claim 10 or claim 11, wherein the withdrawable support means at the second end of the charging device comprises a double sided ramp member in back-to-back configuration defining an apex therebetween, wherein the second end of the charging device is supported by the apex when both the ramp member and the process unit are fully inserted in the main assembly.
Claim 14
Dependent Claim 18 words
A reproducing machine substantially as herein described with reference to Figures 1 to 10 of the accompanying drawings.
Claim 15
Dependent Claim 18 words
A reproducing machine substantially as herein described with reference to Figures 1 to 10 of the accompanying drawings.
Claim 16
Dependent Claim 36 words
A process unit adapted to be removable mounted in a main assembly of a reproducing machine substantially as herein described with reference to Figures 1 to 4 and Figures 6 to 10 of the accompanying drawings.
Claim 17
Dependent Claim 36 words
A process unit adapted to be removable mounted in a main assembly of a reproducing machine substantially as herein described with reference to Figures 1 to 4 and Figures 6 to 10 of the accompanying drawings.

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