JPS5640860A - Developing device - Google Patents

Developing device

Info

Publication number
JPS5640860A
JPS5640860A JP11641779A JP11641779A JPS5640860A JP S5640860 A JPS5640860 A JP S5640860A JP 11641779 A JP11641779 A JP 11641779A JP 11641779 A JP11641779 A JP 11641779A JP S5640860 A JPS5640860 A JP S5640860A
Authority
JP
Japan
Prior art keywords
layer
toner
roller
development
coating
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
JP11641779A
Other languages
Japanese (ja)
Inventor
Hatsuo Tajima
Nagao Hosono
Toru Takahashi
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 JP11641779A priority Critical patent/JPS5640860A/en
Publication of JPS5640860A publication Critical patent/JPS5640860A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To secure a high-quality and steady development, by providing the development roller having the toner holding surface layer in such way that the roller may roll toward the latent image holder. CONSTITUTION:The development roller 8 consists of the rigid body core layer 11, the elastic intermediate layer 12 of the sponge or the like and the nonflexible toner holding surface layer 13 each. The layer 13 is coated over the elastic layer 12, and the surface of the layer 13 is formed uneven with a number of micropores provided. Then the uniforming member 7 loads the toner supplied from the toner supplier 9 on the layer 13 into the above-mentioned pores with the proper coagulation and via the relative shift between the member 7 and the layer 13. Thus the toner coating is carried out to the roller 8. In such way, both the transportation and coating of the toner becomes steady to obtain a high-quality picture.
JP11641779A 1979-09-11 1979-09-11 Developing device Pending JPS5640860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11641779A JPS5640860A (en) 1979-09-11 1979-09-11 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11641779A JPS5640860A (en) 1979-09-11 1979-09-11 Developing device

Publications (1)

Publication Number Publication Date
JPS5640860A true JPS5640860A (en) 1981-04-17

Family

ID=14686551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11641779A Pending JPS5640860A (en) 1979-09-11 1979-09-11 Developing device

Country Status (1)

Country Link
JP (1) JPS5640860A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116559A (en) * 1981-12-29 1983-07-11 Canon Inc Developing device
JPS59189374A (en) * 1983-04-12 1984-10-26 Canon Inc Developing method
JPH02287576A (en) * 1989-04-28 1990-11-27 Fujitsu Ltd Manufacture of single-component developing device and its developing roller
US6055402A (en) * 1997-07-03 2000-04-25 Heidelberger Druckmaschinen Ag Single-component developing station

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58116559A (en) * 1981-12-29 1983-07-11 Canon Inc Developing device
JPS59189374A (en) * 1983-04-12 1984-10-26 Canon Inc Developing method
JPH02287576A (en) * 1989-04-28 1990-11-27 Fujitsu Ltd Manufacture of single-component developing device and its developing roller
US6055402A (en) * 1997-07-03 2000-04-25 Heidelberger Druckmaschinen Ag Single-component developing station

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