JPS5650353A - Minute gap holding unit - Google Patents
Minute gap holding unitInfo
- 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
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.
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)
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 |
-
1979
- 1979-10-02 JP JP12701079A patent/JPS5650353A/en active Pending
Patent Citations (3)
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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