JPS5773748A - Copying machine - Google Patents

Copying machine

Info

Publication number
JPS5773748A
JPS5773748A JP14900880A JP14900880A JPS5773748A JP S5773748 A JPS5773748 A JP S5773748A JP 14900880 A JP14900880 A JP 14900880A JP 14900880 A JP14900880 A JP 14900880A JP S5773748 A JPS5773748 A JP S5773748A
Authority
JP
Japan
Prior art keywords
photoreceptor
magnet roller
closed
clearance
machine body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14900880A
Other languages
Japanese (ja)
Inventor
Nobuyuki Yanagawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP14900880A priority Critical patent/JPS5773748A/en
Publication of JPS5773748A publication Critical patent/JPS5773748A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/75—Details relating to xerographic drum, band or plate, e.g. replacing, testing
    • G03G15/751—Details relating to xerographic drum, band or plate, e.g. replacing, testing relating to drum

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)

Abstract

PURPOSE:To maintain clearance between a magnet roller and a photoreceptor always constant, by providing a pushing body for pushing a magnet roller supporting system against its moving tendency when an upper machine body is closed with respect to the main body of a copying machine. CONSTITUTION:When an upper machine body 1B is changed from a released state to a closed state, the bottom plate 7a of a photoreceptor supporting device 7 comes into contact with 2 eccentric cams 23 for adjusting clearance, and pushes them down during the closed state. It turns a developing vessel 19 constituting a magnet roller supporting system, a little anticlockwise around a shaft 22 against the elastic force of a plate spring 25. At that state, an approach tendency toward the photoreceptor 3 is given to the developing magnet roller 8 by the elastic force of the spring 25, but actual approach movement due to this tendency is hindered by contact pressure of both the cams 23 and the plate 7a, thus permitting the clearance between the photoreceptor 3 and the roller 8 to be automatically limited to a constant gap, and maintained always constant without fluctuating each time the upper machine body 1B is opened and closed.
JP14900880A 1980-10-24 1980-10-24 Copying machine Pending JPS5773748A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14900880A JPS5773748A (en) 1980-10-24 1980-10-24 Copying machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14900880A JPS5773748A (en) 1980-10-24 1980-10-24 Copying machine

Publications (1)

Publication Number Publication Date
JPS5773748A true JPS5773748A (en) 1982-05-08

Family

ID=15465647

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14900880A Pending JPS5773748A (en) 1980-10-24 1980-10-24 Copying machine

Country Status (1)

Country Link
JP (1) JPS5773748A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10222042A (en) * 1997-02-04 1998-08-21 Tec Corp Electrophotographic device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5455443A (en) * 1977-10-12 1979-05-02 Ricoh Co Ltd Developing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5455443A (en) * 1977-10-12 1979-05-02 Ricoh Co Ltd Developing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10222042A (en) * 1997-02-04 1998-08-21 Tec Corp Electrophotographic device

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