JPS5792355A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS5792355A JPS5792355A JP55168622A JP16862280A JPS5792355A JP S5792355 A JPS5792355 A JP S5792355A JP 55168622 A JP55168622 A JP 55168622A JP 16862280 A JP16862280 A JP 16862280A JP S5792355 A JPS5792355 A JP S5792355A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- fur
- image
- contacts
- electrostatic latent
- 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.)
- Granted
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
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0805—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a brush
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Developing For Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
PURPOSE:To obtain a clear picture which is free from ground fog, by electrically charging a toner for developing an electrostatic latent image on the surface for holding an image, through between a rotating fur brush and a conductive case whose radius of curvature is almost same as said brush. CONSTITUTION:This device is provided with a developing roller 2 slide-rotating in the opposite direction to the surface of a photosensitive body 1 of a dry type electronic copying machine which is rotated in the direction as indicated with an arrow. As for the developing roller 2, a urethane layer 7 is provided around a metallic shaft 6 of negative potential, and a fur body 9 is planted through a conductive adhesion layer 8 of its outside circumferential surface. A toner 3 consisting of a nonmagnetic substance, which has been put into a case 4 of positive or negative potential is stirred by a blade 13, its excess is scraped down when it passes through a net body 14, its proper quantity is supplied to the fur body 9, the fur body 9 contacts with a conductive case 11, slides, and after that, contacts with the photosensitive body 1, and a charged toner is adsorbed by an electrostatic latent image, which is developed. In this way, the supply quantity of a toner is made proper, an uncharged toner is decreased, generation of ground fog is prevented, and a clear image is obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55168622A JPS5792355A (en) | 1980-11-29 | 1980-11-29 | Developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP55168622A JPS5792355A (en) | 1980-11-29 | 1980-11-29 | Developing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5792355A true JPS5792355A (en) | 1982-06-08 |
JPS6258507B2 JPS6258507B2 (en) | 1987-12-07 |
Family
ID=15871466
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP55168622A Granted JPS5792355A (en) | 1980-11-29 | 1980-11-29 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5792355A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5955463A (en) * | 1982-09-24 | 1984-03-30 | Mita Ind Co Ltd | Toner density controlling method of two-component developer |
JPS5975268A (en) * | 1982-10-22 | 1984-04-27 | Mita Ind Co Ltd | Method and device for adjusting toner density |
JPS6021072A (en) * | 1983-07-14 | 1985-02-02 | Konishiroku Photo Ind Co Ltd | Developing method and device |
EP0469902A2 (en) * | 1990-08-02 | 1992-02-05 | Mita Industrial Co., Ltd. | A developing device |
EP0543630A2 (en) * | 1991-11-22 | 1993-05-26 | Mita Industrial Co., Ltd. | Developing apparatus |
JP2010039390A (en) * | 2008-08-07 | 2010-02-18 | Ricoh Co Ltd | Developing device and image forming apparatus |
-
1980
- 1980-11-29 JP JP55168622A patent/JPS5792355A/en active Granted
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5955463A (en) * | 1982-09-24 | 1984-03-30 | Mita Ind Co Ltd | Toner density controlling method of two-component developer |
US4576465A (en) * | 1982-09-24 | 1986-03-18 | Mita Industrial Co., Ltd. | Method and apparatus for adjusting toner concentration of two-component type developer |
JPH0559427B2 (en) * | 1982-09-24 | 1993-08-31 | Mita Industrial Co Ltd | |
JPS5975268A (en) * | 1982-10-22 | 1984-04-27 | Mita Ind Co Ltd | Method and device for adjusting toner density |
JPH0376457B2 (en) * | 1982-10-22 | 1991-12-05 | Mita Industrial Co Ltd | |
JPS6021072A (en) * | 1983-07-14 | 1985-02-02 | Konishiroku Photo Ind Co Ltd | Developing method and device |
EP0469902A2 (en) * | 1990-08-02 | 1992-02-05 | Mita Industrial Co., Ltd. | A developing device |
EP0543630A2 (en) * | 1991-11-22 | 1993-05-26 | Mita Industrial Co., Ltd. | Developing apparatus |
EP0543630A3 (en) * | 1991-11-22 | 1994-05-18 | Mita Industrial Co Ltd | Developing apparatus |
JP2010039390A (en) * | 2008-08-07 | 2010-02-18 | Ricoh Co Ltd | Developing device and image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS6258507B2 (en) | 1987-12-07 |
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