JPS5650353A - Minute gap holding unit - Google Patents

Minute gap holding unit

Info

Publication number
JPS5650353A
JPS5650353A JP12701079A JP12701079A JPS5650353A JP S5650353 A JPS5650353 A JP S5650353A JP 12701079 A JP12701079 A JP 12701079A JP 12701079 A JP12701079 A JP 12701079A JP S5650353 A JPS5650353 A JP S5650353A
Authority
JP
Japan
Prior art keywords
drum
fixed
cam
gap
recording electrode
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
JP12701079A
Other languages
Japanese (ja)
Inventor
Chuji Ishikawa
Osamu Nonoyama
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 JP12701079A priority Critical patent/JPS5650353A/en
Publication of JPS5650353A publication Critical patent/JPS5650353A/en
Pending legal-status Critical Current

Links

Landscapes

  • Common Mechanisms (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)

Abstract

PURPOSE:To hold the gap between the drum and the recording electrode stably with a high reliability, by providing a sensor, which is fixed to the recording electrode for electrostatic latent image forming or recording and detects the distance to the drum outside circumference face, and a connecting and separating means which causes the recording electrode to follow eccentricity of the drum through a cam by the signal of the sensor above. CONSTITUTION:Cam 18 is fixed to rotating shaft 16, which is rotated through flexible joint 19 by pulse motor 21, near rotary drum 2. Micrometer head 12 is fitted to fitting plate 11 fixed to recording electrode 1, and the tip of head 12 is pressure- fixed to roller 13 put on the V groove of lever 14. Lever 14 has one end supported rotatably by the support shaft, and free end 14a is pressed to cam 18. When gap G between tip 15a of sensor fixed to fitting plate 11 and the outside circumference face of drum 2 exceeds a prescribed value and fluctuates, a pulse is generated, and cam 18 is rotated in positive and reverse directions through pulse motor 20 to hold gap G while following eccentricity of drum 2. Consequently, gap G is held fixed stably with a high reliability.
JP12701079A 1979-10-02 1979-10-02 Minute gap holding unit Pending JPS5650353A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12701079A JPS5650353A (en) 1979-10-02 1979-10-02 Minute gap holding unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12701079A JPS5650353A (en) 1979-10-02 1979-10-02 Minute gap holding unit

Publications (1)

Publication Number Publication Date
JPS5650353A true JPS5650353A (en) 1981-05-07

Family

ID=14949443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12701079A Pending JPS5650353A (en) 1979-10-02 1979-10-02 Minute gap holding unit

Country Status (1)

Country Link
JP (1) JPS5650353A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50132937A (en) * 1974-04-05 1975-10-21
JPS5175466A (en) * 1974-12-25 1976-06-30 Canon Kk JIDOKYORIKENSHUTSUSOCHI
JPS5238944A (en) * 1975-09-23 1977-03-25 Canon Inc Optical system for scanning

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50132937A (en) * 1974-04-05 1975-10-21
JPS5175466A (en) * 1974-12-25 1976-06-30 Canon Kk JIDOKYORIKENSHUTSUSOCHI
JPS5238944A (en) * 1975-09-23 1977-03-25 Canon Inc Optical system for scanning

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