JPS5459937A - Electrophotographic developing method - Google Patents

Electrophotographic developing method

Info

Publication number
JPS5459937A
JPS5459937A JP12620777A JP12620777A JPS5459937A JP S5459937 A JPS5459937 A JP S5459937A JP 12620777 A JP12620777 A JP 12620777A JP 12620777 A JP12620777 A JP 12620777A JP S5459937 A JPS5459937 A JP S5459937A
Authority
JP
Japan
Prior art keywords
image
toner
electrostatic latent
bias voltage
magnetic
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
JP12620777A
Other languages
Japanese (ja)
Inventor
Yukio Tabata
Seiichi Miyagawa
Nobuo Mochizuki
Hajime Koyama
Teruyuki Onuma
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 JP12620777A priority Critical patent/JPS5459937A/en
Publication of JPS5459937A publication Critical patent/JPS5459937A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE: To inhibit deposition of toner on non-image parts and increase the image concentration of image parts by applying a specific bias voltage in the case of developing by using one-component magnetic toner.
CONSTITUTION: A photosensitive drum 1 which comprises laminating a Se photosensitive layer 3 on a grounded conductive drum 2 is charged by a charger 4, and is formed with the electrostatic latent image by the light image radiation corresponding to the original. With the developing device 5 consisting of a rotatable non- magnetic sleeve 7 having a stationay magnetic roller 6 alternately magnetized with N pole and S pole in the inside and a toner hopper 8; a bias voltage of a polarity opposite from that of the electrostatic latent image on the drum 1 and of a range of the flat portion of the reflection density-bias voltage curve of the non-image parts is applied on the sleeve 7 from a bias power source 9 and the electrostatic latent image is developed by the one-component type magnetic toner of less than 1012Ωcm in specific volume resistance value. The toner image is transferred onto the transfer paper S having been fed by a feed roller 11 from a feed cassette 10, by means of a corona transfer unit 12
COPYRIGHT: (C)1979,JPO&Japio
JP12620777A 1977-10-20 1977-10-20 Electrophotographic developing method Pending JPS5459937A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12620777A JPS5459937A (en) 1977-10-20 1977-10-20 Electrophotographic developing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12620777A JPS5459937A (en) 1977-10-20 1977-10-20 Electrophotographic developing method

Publications (1)

Publication Number Publication Date
JPS5459937A true JPS5459937A (en) 1979-05-15

Family

ID=14929355

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12620777A Pending JPS5459937A (en) 1977-10-20 1977-10-20 Electrophotographic developing method

Country Status (1)

Country Link
JP (1) JPS5459937A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713466A (en) * 1980-06-26 1982-01-23 Toshiba Corp Developing device using one-component magnetic toner

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5713466A (en) * 1980-06-26 1982-01-23 Toshiba Corp Developing device using one-component magnetic toner

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