JPS5732462A - Magnetic brush developing device - Google Patents

Magnetic brush developing device

Info

Publication number
JPS5732462A
JPS5732462A JP10794280A JP10794280A JPS5732462A JP S5732462 A JPS5732462 A JP S5732462A JP 10794280 A JP10794280 A JP 10794280A JP 10794280 A JP10794280 A JP 10794280A JP S5732462 A JPS5732462 A JP S5732462A
Authority
JP
Japan
Prior art keywords
sleeve
doctor
gap
development
developing device
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
Application number
JP10794280A
Other languages
Japanese (ja)
Other versions
JPH0139106B2 (en
Inventor
Tsutomu Imai
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 JP10794280A priority Critical patent/JPS5732462A/en
Publication of JPS5732462A publication Critical patent/JPS5732462A/en
Publication of JPH0139106B2 publication Critical patent/JPH0139106B2/ja
Granted 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
    • G03G15/06—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
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush

Abstract

PURPOSE:To secure precision easily by widening a development gap by moving a developer faster on a development sleeve at a doctor part than at a contact part where an electrostatic latent image comes into contact. CONSTITUTION:In a developing container 11, a supply sleeve 13 is arranged at its lower part and a development sleeve 15 containing a magnet 14 kept still is also arranged at its upper part. Then, the surface of the supply sleeve 13 moves clockwise at a speed v1, and that of the development sleeve 15 also moves in the same direction at a speed v2 with the v2 greater than the v1. When v1=v2 as usual, a doctor gap Gd should be 0.18+ or -0.05mm. and very high precision is required. When v1=1/2v2, however, even the doctor gap Gd having the same value, very loose value link 0.35+ or -0.1mm., is sufficient, thereby widening the doctor gap.
JP10794280A 1980-08-06 1980-08-06 Magnetic brush developing device Granted JPS5732462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10794280A JPS5732462A (en) 1980-08-06 1980-08-06 Magnetic brush developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10794280A JPS5732462A (en) 1980-08-06 1980-08-06 Magnetic brush developing device

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP1719989A Division JPH01221776A (en) 1989-01-26 1989-01-26 Magnetic brush developing device

Publications (2)

Publication Number Publication Date
JPS5732462A true JPS5732462A (en) 1982-02-22
JPH0139106B2 JPH0139106B2 (en) 1989-08-18

Family

ID=14471948

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10794280A Granted JPS5732462A (en) 1980-08-06 1980-08-06 Magnetic brush developing device

Country Status (1)

Country Link
JP (1) JPS5732462A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6314269U (en) * 1986-07-11 1988-01-29
JPH01221776A (en) * 1989-01-26 1989-09-05 Ricoh Co Ltd Magnetic brush developing device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5070925U (en) * 1973-10-26 1975-06-23
JPS5226837A (en) * 1975-08-25 1977-02-28 Kanebo Ltd Process for supplying an electrophotographic developer and device ther efor
JPS5443037A (en) * 1977-09-10 1979-04-05 Canon Inc Electrostatic image developing device
JPS5472060A (en) * 1977-11-19 1979-06-09 Ricoh Co Ltd Magnetic brush developing device
JPS54143653A (en) * 1978-04-28 1979-11-09 Canon Inc Developing device
JPS56126870A (en) * 1980-03-11 1981-10-05 Canon Inc Developing equipment

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5070925U (en) * 1973-10-26 1975-06-23
JPS5226837A (en) * 1975-08-25 1977-02-28 Kanebo Ltd Process for supplying an electrophotographic developer and device ther efor
JPS5443037A (en) * 1977-09-10 1979-04-05 Canon Inc Electrostatic image developing device
JPS5472060A (en) * 1977-11-19 1979-06-09 Ricoh Co Ltd Magnetic brush developing device
JPS54143653A (en) * 1978-04-28 1979-11-09 Canon Inc Developing device
JPS56126870A (en) * 1980-03-11 1981-10-05 Canon Inc Developing equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6314269U (en) * 1986-07-11 1988-01-29
JPH01221776A (en) * 1989-01-26 1989-09-05 Ricoh Co Ltd Magnetic brush developing device
JPH0545955B2 (en) * 1989-01-26 1993-07-12 Ricoh Kk

Also Published As

Publication number Publication date
JPH0139106B2 (en) 1989-08-18

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