JPS6465587A - Developing device for copying machine - Google Patents

Developing device for copying machine

Info

Publication number
JPS6465587A
JPS6465587A JP22266587A JP22266587A JPS6465587A JP S6465587 A JPS6465587 A JP S6465587A JP 22266587 A JP22266587 A JP 22266587A JP 22266587 A JP22266587 A JP 22266587A JP S6465587 A JPS6465587 A JP S6465587A
Authority
JP
Japan
Prior art keywords
forming plate
developer
spike
spike rise
rise forming
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
JP22266587A
Other languages
Japanese (ja)
Other versions
JPH07109529B2 (en
Inventor
Naotaka Funayama
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP62222665A priority Critical patent/JPH07109529B2/en
Priority to US07/237,870 priority patent/US4980728A/en
Publication of JPS6465587A publication Critical patent/JPS6465587A/en
Publication of JPH07109529B2 publication Critical patent/JPH07109529B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To prevent an uneven development, and to obtain a satisfactory image by dispersing magnetic powder to a spike rise forming plate. CONSTITUTION:When a developer 2 moves to the end part of a circular arc-like spike rise forming plate 24 as a magnet body 21 rotates, it is scraped by a scraping end 24a of the spike rise forming plate 24, and goes to a spike rise state on the spike rise forming plate 24 by magnetic force of magnets N, S. Subsequently, a photosensitive body 2 and the developer 2 come into contact with each other, the developer 2 is transferred to an electrostatic latent image formed on the photosensitive body 23, and the development is executed. In such a case, since magnetic powder 24d is dispersed to the spike rise forming plate 24, a magnetic field to the magnets N, S is dispersed, and developing pressure of the developer 2 generated due to a difference of magnetic force in the radial direction of the magnet body 21 is corrected uniformly. In such a way, an uneven development is prevented, and a satisfactory image is obtained.
JP62222665A 1987-09-04 1987-09-04 Copier developing device Expired - Fee Related JPH07109529B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62222665A JPH07109529B2 (en) 1987-09-04 1987-09-04 Copier developing device
US07/237,870 US4980728A (en) 1987-09-04 1988-08-29 Developing device with a magnetic brush turning plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62222665A JPH07109529B2 (en) 1987-09-04 1987-09-04 Copier developing device

Publications (2)

Publication Number Publication Date
JPS6465587A true JPS6465587A (en) 1989-03-10
JPH07109529B2 JPH07109529B2 (en) 1995-11-22

Family

ID=16786011

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62222665A Expired - Fee Related JPH07109529B2 (en) 1987-09-04 1987-09-04 Copier developing device

Country Status (1)

Country Link
JP (1) JPH07109529B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57142741U (en) * 1981-03-03 1982-09-07
JPS60172164U (en) * 1984-04-23 1985-11-14 ミノルタ株式会社 Electrostatic latent image developing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57142741U (en) * 1981-03-03 1982-09-07
JPS60172164U (en) * 1984-04-23 1985-11-14 ミノルタ株式会社 Electrostatic latent image developing device

Also Published As

Publication number Publication date
JPH07109529B2 (en) 1995-11-22

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees