JPS5451841A - Developing method - Google Patents

Developing method

Info

Publication number
JPS5451841A
JPS5451841A JP11817277A JP11817277A JPS5451841A JP S5451841 A JPS5451841 A JP S5451841A JP 11817277 A JP11817277 A JP 11817277A JP 11817277 A JP11817277 A JP 11817277A JP S5451841 A JPS5451841 A JP S5451841A
Authority
JP
Japan
Prior art keywords
toner
developing
minus
charges
photoreceptor
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
JP11817277A
Other languages
Japanese (ja)
Other versions
JPS6211342B2 (en
Inventor
Teruyuki Onuma
Tsuguo Kimura
Seiichi Miyagawa
Hajime Koyama
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 JP11817277A priority Critical patent/JPS5451841A/en
Publication of JPS5451841A publication Critical patent/JPS5451841A/en
Publication of JPS6211342B2 publication Critical patent/JPS6211342B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)

Abstract

PURPOSE: To obtain sharp and high-resolution images of not causing ground contamination by the developing method by which bias effect is produced in the developer donor of at least the surfaces whereof are of electric insulation type at the developing.
CONSTITUTION: Charges of minus exist on the surface of the insulation layer 5 of developing roller 3 and a toner layer is formed thereon. The toner having been charged to plus exists on the surface layer thereof. Since the polarity of the electrostatic latent image on a photoreceptor 1 is minus, the toner of a polarity opposite therefrom is electrostatically attracted, whereby developing is accomplished. On the other hand, in the non-image part, the minus charges slightly remain and have the attraction force to suck the toner but the attraction force of the charged charges on the developing roller 3 is stronger, preventing the toner from moving to the photoreceptor 1 in the non-image part. This enables the hihg-resolution images of not causing ground contamination to be obtained
COPYRIGHT: (C)1979,JPO&Japio
JP11817277A 1977-09-30 1977-09-30 Developing method Granted JPS5451841A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11817277A JPS5451841A (en) 1977-09-30 1977-09-30 Developing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11817277A JPS5451841A (en) 1977-09-30 1977-09-30 Developing method

Publications (2)

Publication Number Publication Date
JPS5451841A true JPS5451841A (en) 1979-04-24
JPS6211342B2 JPS6211342B2 (en) 1987-03-12

Family

ID=14729894

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11817277A Granted JPS5451841A (en) 1977-09-30 1977-09-30 Developing method

Country Status (1)

Country Link
JP (1) JPS5451841A (en)

Also Published As

Publication number Publication date
JPS6211342B2 (en) 1987-03-12

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