JPS5589869A - Developing device - Google Patents

Developing device

Info

Publication number
JPS5589869A
JPS5589869A JP16586578A JP16586578A JPS5589869A JP S5589869 A JPS5589869 A JP S5589869A JP 16586578 A JP16586578 A JP 16586578A JP 16586578 A JP16586578 A JP 16586578A JP S5589869 A JPS5589869 A JP S5589869A
Authority
JP
Japan
Prior art keywords
developer
layer thickness
supporting means
coefficient
thermal expansion
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
Application number
JP16586578A
Other languages
Japanese (ja)
Inventor
Kozo Arao
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 JP16586578A priority Critical patent/JPS5589869A/en
Publication of JPS5589869A publication Critical patent/JPS5589869A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To keep the toner layer thickness roughly constant within the specified temperature range and obtain an excellent image, by providing a developer supporting means and a developer layer thickness defining means, and specifying the dimension between these linking parts and coefficient of thermal expansion in specified relations. CONSTITUTION:Opposite to a latent image holding member 1 are provided a developer supporting means 2, a means 6 to define the thickness of the layer of the developer being supplied, and a means 4 to connect them. The distance L from the linking part of the linkage supporting means 4 with the developer supporting means 2 to the linking part 7 with the developer layer thickness defining means 6, the coefficient of thermal expansion a, the distance l from the linking part 7 to the end of the developer layer thickness defining means 6, the coefficient of thermal expansion b, and the distance d at 15 deg.C from the developer supporting means 2 to the developer defining means 6 are designed to satisfy the relations of a<b and formulae (1) and (2). Therefore, within the operating temperatures of -5 deg.C-35 deg.C, the toner layer thickness may be kept almost constant, so that an excellent image may be obtained.
JP16586578A 1978-12-27 1978-12-27 Developing device Pending JPS5589869A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16586578A JPS5589869A (en) 1978-12-27 1978-12-27 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16586578A JPS5589869A (en) 1978-12-27 1978-12-27 Developing device

Publications (1)

Publication Number Publication Date
JPS5589869A true JPS5589869A (en) 1980-07-07

Family

ID=15820446

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16586578A Pending JPS5589869A (en) 1978-12-27 1978-12-27 Developing device

Country Status (1)

Country Link
JP (1) JPS5589869A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6078467A (en) * 1983-10-05 1985-05-04 Ricoh Co Ltd Developing device
JPS6095558A (en) * 1983-10-31 1985-05-28 Konishiroku Photo Ind Co Ltd Developing device of copying machine or the like
JPH01309080A (en) * 1988-06-08 1989-12-13 Fuji Xerox Co Ltd Developing device
US6038416A (en) * 1997-08-04 2000-03-14 Hitachi, Ltd. Developing apparatus and image forming apparatus having the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6078467A (en) * 1983-10-05 1985-05-04 Ricoh Co Ltd Developing device
JPS6095558A (en) * 1983-10-31 1985-05-28 Konishiroku Photo Ind Co Ltd Developing device of copying machine or the like
JPH01309080A (en) * 1988-06-08 1989-12-13 Fuji Xerox Co Ltd Developing device
US6038416A (en) * 1997-08-04 2000-03-14 Hitachi, Ltd. Developing apparatus and image forming apparatus having the same

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