JPS55121461A - Magnetic brush developing device - Google Patents

Magnetic brush developing device

Info

Publication number
JPS55121461A
JPS55121461A JP3082879A JP3082879A JPS55121461A JP S55121461 A JPS55121461 A JP S55121461A JP 3082879 A JP3082879 A JP 3082879A JP 3082879 A JP3082879 A JP 3082879A JP S55121461 A JPS55121461 A JP S55121461A
Authority
JP
Japan
Prior art keywords
developing sleeve
magnetic brush
photosensitive drum
developed
development
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
JP3082879A
Other languages
Japanese (ja)
Inventor
Osamu Miyamoto
Susumu Sakakibara
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.)
Minolta Co Ltd
Original Assignee
Minolta 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 Minolta Co Ltd filed Critical Minolta Co Ltd
Priority to JP3082879A priority Critical patent/JPS55121461A/en
Publication of JPS55121461A publication Critical patent/JPS55121461A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE: To prevent the deterioration of toner images even at the high-speed development by disposing two developing means.
CONSTITUTION: The 1st developing sleeve 11 connected to a bias voltage source 13 for inhibiting development and the 2nd developing sleeve 12 connected to a bias voltage source 14 for preventing the occurrence of development fogs are disposed in opposition to a photosensitive drum 10 within a developing tank 15. As a result of this, the electrostatic latent images carried on the photosensitive drum 10 opposes to the 1st developing sleeve 11 along with the rotation driving of the photosensitive drum 10 and are preliminarily developed by the 1st magnetic brush formed, thence they oppose to the 2nd developing sleeve 12 and are developed to the required image density by the 2nd magnetic brush formed. Hence, even at the high-speed development, the degradation in the image quality of the developed toner images is prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP3082879A 1979-03-15 1979-03-15 Magnetic brush developing device Pending JPS55121461A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3082879A JPS55121461A (en) 1979-03-15 1979-03-15 Magnetic brush developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3082879A JPS55121461A (en) 1979-03-15 1979-03-15 Magnetic brush developing device

Publications (1)

Publication Number Publication Date
JPS55121461A true JPS55121461A (en) 1980-09-18

Family

ID=12314556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3082879A Pending JPS55121461A (en) 1979-03-15 1979-03-15 Magnetic brush developing device

Country Status (1)

Country Link
JP (1) JPS55121461A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157964U (en) * 1981-03-30 1982-10-04

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157964U (en) * 1981-03-30 1982-10-04
JPH0112272Y2 (en) * 1981-03-30 1989-04-11

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