JPS55138766A - Magnetic brush developing method - Google Patents

Magnetic brush developing method

Info

Publication number
JPS55138766A
JPS55138766A JP4624479A JP4624479A JPS55138766A JP S55138766 A JPS55138766 A JP S55138766A JP 4624479 A JP4624479 A JP 4624479A JP 4624479 A JP4624479 A JP 4624479A JP S55138766 A JPS55138766 A JP S55138766A
Authority
JP
Japan
Prior art keywords
charged
hopper
developed
electrostatic latent
sleeve
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
JP4624479A
Other languages
Japanese (ja)
Inventor
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 JP4624479A priority Critical patent/JPS55138766A/en
Publication of JPS55138766A publication Critical patent/JPS55138766A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the copied matter of high quality by letting the magnetic brush composed of the one component magnetic toners charged to the polarity opposite from that of an electrostatic latent image, thence the magnetic brush charged to the same polarity, make contact with the electrostatic latent image subsequently.
CONSTITUTION: A photosensitive drum 7 rotates in the arrow direction and has a negatively charged photoreceptor on its surface. The photoreceptor 7 is evenyl charged by a charged 8, is radiated with a light image by an exposure device and is developed by a device 10. The developing device 10 consists of a stationary magnt 12, sleeve 11 and hopper 13. The sleeve rotates in the counterclockwise direction and is held applied with negative developing bias voltage. One component magnetic toners TM are contained in he hopper 13 and the side wall of the outlet of the hopper 13 is applied with the voltage of the polarity opposite from that of the electrostatic latent image by a charge injection electrode 15. The image developed by the 1st device 10 is developed by the 2nd developing device 17 but at this time, the voltage opposite from that on the 1st device 10 is applied to the sleeve 18 and charge injection electrode 21.
COPYRIGHT: (C)1980,JPO&Japio
JP4624479A 1979-04-16 1979-04-16 Magnetic brush developing method Pending JPS55138766A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4624479A JPS55138766A (en) 1979-04-16 1979-04-16 Magnetic brush developing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4624479A JPS55138766A (en) 1979-04-16 1979-04-16 Magnetic brush developing method

Publications (1)

Publication Number Publication Date
JPS55138766A true JPS55138766A (en) 1980-10-29

Family

ID=12741723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4624479A Pending JPS55138766A (en) 1979-04-16 1979-04-16 Magnetic brush developing method

Country Status (1)

Country Link
JP (1) JPS55138766A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6091374A (en) * 1983-10-26 1985-05-22 Toshiba Corp Developing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6091374A (en) * 1983-10-26 1985-05-22 Toshiba Corp Developing device

Similar Documents

Publication Publication Date Title
JPS59101657A (en) Two-color image forming method
GB1240293A (en) Electrophotographic apparatus and method
GB1376278A (en) Electro photographic copying methods
JPS5654473A (en) Electrophotographic copier
JPS55137538A (en) Electrophotographic recording method
JPS54115233A (en) Reversal development process
JPS58108555A (en) Controlling method of electronic copying machine
JPS55138766A (en) Magnetic brush developing method
JPS5950471A (en) Method and device for electrophotographic development
JPS58195852A (en) Two-color electrophotographic method
JPS57104159A (en) Toner density detecting method
JPS5543512A (en) Reversal copying method
JPS5463830A (en) Development
JPS5774767A (en) Electrophotographic device
JPS5515176A (en) Electrophotographic copying method
JPS5538522A (en) Electrophotographic type image recording method
JPS5722275A (en) Electrophotographic device
JPS57114153A (en) Electrophotographing method
JPS5774766A (en) Electrophotographic device
JPS56156849A (en) Method and device for regular copying and reversal copying
JPS5529881A (en) Latent image potential correcting method
JPS5459937A (en) Electrophotographic developing method
JPS5515151A (en) Electrophotographic method
JPS5978379A (en) Electrophotographic method
JPS63249873A (en) Electrophotographic device