JPS5451848A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS5451848A JPS5451848A JP11821977A JP11821977A JPS5451848A JP S5451848 A JPS5451848 A JP S5451848A JP 11821977 A JP11821977 A JP 11821977A JP 11821977 A JP11821977 A JP 11821977A JP S5451848 A JPS5451848 A JP S5451848A
- Authority
- JP
- Japan
- Prior art keywords
- electrostatic image
- sleeve
- image holding
- holding face
- toner
- 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
Landscapes
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
PURPOSE:To obtain even and high-resolving-power toner images free from ground fogs by letting a developer carrier be approached to an electrostatic image holding face and providing a means of forming a developer layer thinner in thickness than the proximity spacing. CONSTITUTION:A toner layer thickness defining member 6 of blade form composed of a soft elastic material such as rubber or the like is contacted to the sleeve 4 surface between the opening 1a of the developing device housing 1 where a rotatable sleeve 4 enclosing a magnet 5 is so disposed as to approach to the photoreceptor surface 5 and the position opposing to the photoreceptor surface 5, so as to form a wedge-form space 8 in which the end angle theta becomes less than 45 deg.. Then, if the sleeve 4 rotates, the even toner layer of around 50mu of a thickness thinner tnan the proximity spacing is formed. When the toner layer opposes to the electrostatic image holding face, it elongates and makes direct contact with the electrostatic image holding face, thus forming the even and high-resolving- power toner image free from ground fogs.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11821977A JPS5451848A (en) | 1977-09-30 | 1977-09-30 | Developing device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11821977A JPS5451848A (en) | 1977-09-30 | 1977-09-30 | Developing device |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61204673A Division JPS62182780A (en) | 1986-08-30 | 1986-08-30 | Developing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5451848A true JPS5451848A (en) | 1979-04-24 |
JPS6315580B2 JPS6315580B2 (en) | 1988-04-05 |
Family
ID=14731159
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11821977A Granted JPS5451848A (en) | 1977-09-30 | 1977-09-30 | Developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5451848A (en) |
Cited By (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5990958U (en) * | 1982-12-10 | 1984-06-20 | 株式会社リコー | developing device |
JPS59116770A (en) * | 1982-12-24 | 1984-07-05 | Toshiba Corp | Developing device |
JPS6073649A (en) * | 1983-09-30 | 1985-04-25 | Toshiba Corp | Developing device |
JPS6073648A (en) * | 1983-09-30 | 1985-04-25 | Toshiba Corp | Developing device |
JPS60138574A (en) * | 1983-12-27 | 1985-07-23 | Toshiba Corp | Developing device |
JPS6152664A (en) * | 1984-08-22 | 1986-03-15 | Matsushita Electric Ind Co Ltd | Developing device |
JPS61250666A (en) * | 1985-04-30 | 1986-11-07 | Tokai Rubber Ind Ltd | Frictional electrostatic charge member for one-component toner |
JPS61261759A (en) * | 1985-05-16 | 1986-11-19 | Tokai Rubber Ind Ltd | Frictional electrostatic charging member for one-component type toner |
US4624545A (en) * | 1982-10-15 | 1986-11-25 | Ricoh Company, Ltd. | Developing device with regulated developer supply |
JPS6224283A (en) * | 1985-07-25 | 1987-02-02 | Fuji Xerox Co Ltd | Developing device |
JPS6280677A (en) * | 1985-10-04 | 1987-04-14 | Ricoh Co Ltd | Developing device |
JPS6271644U (en) * | 1985-10-24 | 1987-05-07 | ||
JPS62168175A (en) * | 1986-11-25 | 1987-07-24 | Toshiba Corp | Developing device |
JPS62172374A (en) * | 1986-01-24 | 1987-07-29 | Konishiroku Photo Ind Co Ltd | Method for forming multiple color image |
JPS62127557U (en) * | 1986-02-03 | 1987-08-13 | ||
JPS62191868A (en) * | 1986-02-18 | 1987-08-22 | Konishiroku Photo Ind Co Ltd | Formation of developer layer |
JPS62288869A (en) * | 1986-06-06 | 1987-12-15 | Matsushita Electric Ind Co Ltd | Developing device and marginal image forming device |
JPS63364U (en) * | 1986-06-17 | 1988-01-05 | ||
JPS632084A (en) * | 1986-06-12 | 1988-01-07 | Konica Corp | Developing device |
JPS63226680A (en) * | 1986-10-09 | 1988-09-21 | Konica Corp | Developer layer forming device |
JPS63148957U (en) * | 1987-03-19 | 1988-09-30 | ||
JPS63192713U (en) * | 1987-05-30 | 1988-12-12 | ||
JPS63195343U (en) * | 1987-05-30 | 1988-12-15 | ||
JPH0285448U (en) * | 1988-12-19 | 1990-07-04 | ||
US4990959A (en) * | 1988-07-29 | 1991-02-05 | Fuji Xerox Co., Ltd. | One-component developing apparatus with improved toner layer regulating member |
JPH0318551U (en) * | 1990-06-28 | 1991-02-22 | ||
US5054419A (en) * | 1988-05-09 | 1991-10-08 | Konica Corporation | Image forming apparatus |
US5325637A (en) * | 1991-10-31 | 1994-07-05 | Konica Corporation | Developing apparatus with an improved sleeve |
US5585901A (en) * | 1992-06-16 | 1996-12-17 | Fuji Xerox Co., Ltd. | Developing machine and carrier containing a charge-imparting agent |
US5634181A (en) * | 1993-02-16 | 1997-05-27 | Fuji Xerox Co., Ltd. | Developing apparatus |
JP2012053111A (en) * | 2010-08-31 | 2012-03-15 | Brother Ind Ltd | Developing device |
JP2014002204A (en) * | 2012-06-15 | 2014-01-09 | Canon Inc | Developing device, process cartridge, and image forming apparatus |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5045648A (en) * | 1973-07-27 | 1975-04-23 | ||
US4011834A (en) * | 1975-10-02 | 1977-03-15 | Xerox Corporation | Touchdown electrostatic development apparatus |
JPS5273736A (en) * | 1975-12-16 | 1977-06-21 | Ricoh Co Ltd | Development process for electrostatic latent image |
DE2708299A1 (en) * | 1976-02-25 | 1977-09-08 | Ricoh Kk | DEVICE FOR DEVELOPING AN ELECTROSTATIC IMAGE |
JPS5329137A (en) * | 1976-08-30 | 1978-03-18 | Ricoh Co Ltd | Developing device for electrostatic latent image |
-
1977
- 1977-09-30 JP JP11821977A patent/JPS5451848A/en active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5045648A (en) * | 1973-07-27 | 1975-04-23 | ||
US4011834A (en) * | 1975-10-02 | 1977-03-15 | Xerox Corporation | Touchdown electrostatic development apparatus |
JPS5273736A (en) * | 1975-12-16 | 1977-06-21 | Ricoh Co Ltd | Development process for electrostatic latent image |
DE2708299A1 (en) * | 1976-02-25 | 1977-09-08 | Ricoh Kk | DEVICE FOR DEVELOPING AN ELECTROSTATIC IMAGE |
JPS5329137A (en) * | 1976-08-30 | 1978-03-18 | Ricoh Co Ltd | Developing device for electrostatic latent image |
Cited By (35)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4624545A (en) * | 1982-10-15 | 1986-11-25 | Ricoh Company, Ltd. | Developing device with regulated developer supply |
JPS5990958U (en) * | 1982-12-10 | 1984-06-20 | 株式会社リコー | developing device |
JPS59116770A (en) * | 1982-12-24 | 1984-07-05 | Toshiba Corp | Developing device |
JPS6073649A (en) * | 1983-09-30 | 1985-04-25 | Toshiba Corp | Developing device |
JPS6073648A (en) * | 1983-09-30 | 1985-04-25 | Toshiba Corp | Developing device |
JPS60138574A (en) * | 1983-12-27 | 1985-07-23 | Toshiba Corp | Developing device |
JPH0254945B2 (en) * | 1984-08-22 | 1990-11-26 | Matsushita Electric Ind Co Ltd | |
JPS6152664A (en) * | 1984-08-22 | 1986-03-15 | Matsushita Electric Ind Co Ltd | Developing device |
JPS61250666A (en) * | 1985-04-30 | 1986-11-07 | Tokai Rubber Ind Ltd | Frictional electrostatic charge member for one-component toner |
JPS61261759A (en) * | 1985-05-16 | 1986-11-19 | Tokai Rubber Ind Ltd | Frictional electrostatic charging member for one-component type toner |
JPS6224283A (en) * | 1985-07-25 | 1987-02-02 | Fuji Xerox Co Ltd | Developing device |
JPS6280677A (en) * | 1985-10-04 | 1987-04-14 | Ricoh Co Ltd | Developing device |
JPH0658565B2 (en) * | 1985-10-04 | 1994-08-03 | 株式会社リコー | Development device |
JPS6271644U (en) * | 1985-10-24 | 1987-05-07 | ||
JPS62172374A (en) * | 1986-01-24 | 1987-07-29 | Konishiroku Photo Ind Co Ltd | Method for forming multiple color image |
JPS62127557U (en) * | 1986-02-03 | 1987-08-13 | ||
JPS62191868A (en) * | 1986-02-18 | 1987-08-22 | Konishiroku Photo Ind Co Ltd | Formation of developer layer |
JPS62288869A (en) * | 1986-06-06 | 1987-12-15 | Matsushita Electric Ind Co Ltd | Developing device and marginal image forming device |
JPS632084A (en) * | 1986-06-12 | 1988-01-07 | Konica Corp | Developing device |
JPS63364U (en) * | 1986-06-17 | 1988-01-05 | ||
JPS63226680A (en) * | 1986-10-09 | 1988-09-21 | Konica Corp | Developer layer forming device |
JPS62168175A (en) * | 1986-11-25 | 1987-07-24 | Toshiba Corp | Developing device |
JPH0320746B2 (en) * | 1986-11-25 | 1991-03-20 | Tokyo Shibaura Electric Co | |
JPS63148957U (en) * | 1987-03-19 | 1988-09-30 | ||
JPS63192713U (en) * | 1987-05-30 | 1988-12-12 | ||
JPS63195343U (en) * | 1987-05-30 | 1988-12-15 | ||
US5054419A (en) * | 1988-05-09 | 1991-10-08 | Konica Corporation | Image forming apparatus |
US4990959A (en) * | 1988-07-29 | 1991-02-05 | Fuji Xerox Co., Ltd. | One-component developing apparatus with improved toner layer regulating member |
JPH0285448U (en) * | 1988-12-19 | 1990-07-04 | ||
JPH0318551U (en) * | 1990-06-28 | 1991-02-22 | ||
US5325637A (en) * | 1991-10-31 | 1994-07-05 | Konica Corporation | Developing apparatus with an improved sleeve |
US5585901A (en) * | 1992-06-16 | 1996-12-17 | Fuji Xerox Co., Ltd. | Developing machine and carrier containing a charge-imparting agent |
US5634181A (en) * | 1993-02-16 | 1997-05-27 | Fuji Xerox Co., Ltd. | Developing apparatus |
JP2012053111A (en) * | 2010-08-31 | 2012-03-15 | Brother Ind Ltd | Developing device |
JP2014002204A (en) * | 2012-06-15 | 2014-01-09 | Canon Inc | Developing device, process cartridge, and image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS6315580B2 (en) | 1988-04-05 |
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