JPS56113172A - Development device - Google Patents

Development device

Info

Publication number
JPS56113172A
JPS56113172A JP1645380A JP1645380A JPS56113172A JP S56113172 A JPS56113172 A JP S56113172A JP 1645380 A JP1645380 A JP 1645380A JP 1645380 A JP1645380 A JP 1645380A JP S56113172 A JPS56113172 A JP S56113172A
Authority
JP
Japan
Prior art keywords
sleeve
toner
concave
supporting member
caused
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
JP1645380A
Other languages
Japanese (ja)
Other versions
JPS645711B2 (en
Inventor
Yasuyuki Tamura
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP1645380A priority Critical patent/JPS56113172A/en
Priority to US06/138,909 priority patent/US4377332A/en
Priority to DE19803014849 priority patent/DE3014849A1/en
Publication of JPS56113172A publication Critical patent/JPS56113172A/en
Publication of JPS645711B2 publication Critical patent/JPS645711B2/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
    • G03G15/0921—Details concerning the magnetic brush roller structure, e.g. magnet configuration
    • G03G15/0928—Details concerning the magnetic brush roller structure, e.g. magnet configuration relating to the shell, e.g. structure, composition
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0634—Developing device
    • G03G2215/0636—Specific type of dry developer device

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE:To form an equal and even developer thin layer on the surface of the deve lopment material supporting member, by providing a concave and convex part along the carrying direction of the development material supporting member on its surface. CONSTITUTION:A toner 10 is stored in the hopper 7a, and it is drawn closer onto the sleeve 6. As for the toner on the sleeve, charge is provided by friction against the sleeve, which is caused by rotation of the sleeve. In this regard, in case when the surface of the sleeve has been smooth heretofore, a toner coagulates magnetically and becomes a large coagulation lump in the toner recevoir of the magnetic blade 1a upstream side against the advancing direction of the sleeve 2, and this lump protrudes from the blade 1a, collects in the part A, and causes an uneven application. When toner coating is performed by use of a sleeve having concave and convex parts in the circumferential direction, however, such an uneven application due to protrusion of a toner is not caused.
JP1645380A 1979-04-20 1980-02-12 Development device Granted JPS56113172A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP1645380A JPS56113172A (en) 1980-02-12 1980-02-12 Development device
US06/138,909 US4377332A (en) 1979-04-20 1980-04-10 Developing device
DE19803014849 DE3014849A1 (en) 1979-04-20 1980-04-17 DEVELOPMENT DEVICE AND METHOD FOR PRODUCING THE SAME

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1645380A JPS56113172A (en) 1980-02-12 1980-02-12 Development device

Publications (2)

Publication Number Publication Date
JPS56113172A true JPS56113172A (en) 1981-09-05
JPS645711B2 JPS645711B2 (en) 1989-01-31

Family

ID=11916661

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1645380A Granted JPS56113172A (en) 1979-04-20 1980-02-12 Development device

Country Status (1)

Country Link
JP (1) JPS56113172A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58111068A (en) * 1981-12-24 1983-07-01 Hitachi Metals Ltd Developing device
JPS58159546U (en) * 1982-04-19 1983-10-24 コニカ株式会社 Electrostatic image developing device
JPS59101262U (en) * 1982-12-24 1984-07-07 株式会社リコー Magnetic particle layer thickness control device
JPH01102486A (en) * 1987-10-15 1989-04-20 Canon Inc Developer carrier
JPH01253776A (en) * 1988-04-03 1989-10-11 Canon Inc Developing device
WO1990016017A1 (en) * 1989-06-21 1990-12-27 Seiko Epson Corporation Developing apparatus
US5128722A (en) * 1988-04-08 1992-07-07 Minolta Camera Kabushiki Kaisha Developing device excellent in toner transportability

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6335642B2 (en) 2014-05-23 2018-05-30 キヤノン株式会社 Image forming apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1458766A (en) * 1973-02-15 1976-12-15 Xerox Corp Xerographic developing apparatus
JPS5443037A (en) * 1977-09-10 1979-04-05 Canon Inc Electrostatic image developing device
JPS5455442A (en) * 1977-10-12 1979-05-02 Ricoh Co Ltd Magnetic brush developing device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1458766A (en) * 1973-02-15 1976-12-15 Xerox Corp Xerographic developing apparatus
JPS5443037A (en) * 1977-09-10 1979-04-05 Canon Inc Electrostatic image developing device
JPS5455442A (en) * 1977-10-12 1979-05-02 Ricoh Co Ltd Magnetic brush developing device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58111068A (en) * 1981-12-24 1983-07-01 Hitachi Metals Ltd Developing device
JPS58159546U (en) * 1982-04-19 1983-10-24 コニカ株式会社 Electrostatic image developing device
JPH0452753Y2 (en) * 1982-04-19 1992-12-11
JPS59101262U (en) * 1982-12-24 1984-07-07 株式会社リコー Magnetic particle layer thickness control device
JPH0210542Y2 (en) * 1982-12-24 1990-03-15
JPH01102486A (en) * 1987-10-15 1989-04-20 Canon Inc Developer carrier
JPH01253776A (en) * 1988-04-03 1989-10-11 Canon Inc Developing device
US5128722A (en) * 1988-04-08 1992-07-07 Minolta Camera Kabushiki Kaisha Developing device excellent in toner transportability
WO1990016017A1 (en) * 1989-06-21 1990-12-27 Seiko Epson Corporation Developing apparatus

Also Published As

Publication number Publication date
JPS645711B2 (en) 1989-01-31

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