JPS62260171A - Developing device for electrostatic latent image - Google Patents

Developing device for electrostatic latent image

Info

Publication number
JPS62260171A
JPS62260171A JP61103473A JP10347386A JPS62260171A JP S62260171 A JPS62260171 A JP S62260171A JP 61103473 A JP61103473 A JP 61103473A JP 10347386 A JP10347386 A JP 10347386A JP S62260171 A JPS62260171 A JP S62260171A
Authority
JP
Japan
Prior art keywords
toner
carrier particles
supply roll
magnetic
permanent magnet
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
JP61103473A
Other languages
Japanese (ja)
Inventor
Shunji Kato
Shigekazu Enomoto
Noriyuki Kimura
Noboru Sawayama
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 JP61103473A priority Critical patent/JPS62260171A/en
Priority to GB8703858A priority patent/GB2186818B/en
Priority to US07/016,739 priority patent/US4885223A/en
Priority to DE3705469A priority patent/DE3705469C2/de
Priority to FR878702278A priority patent/FR2594566B1/en
Publication of JPS62260171A publication Critical patent/JPS62260171A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To omit various agitating mechanisms and agitation spaces of a developing device using a two-component developer to miniaturize the whole of he device by providing a toner supply roll which supplies a toner to a magnetic brush and adding a toner layer control member consisting of carrier particles to the toner supply roll. CONSTITUTION:A toner layer control member 26 is provided in the aperture part of a toner hopper 23 and consists of a permanent magnet 26a as a magnetic field generating body and magnetic carrier particles 26b held on lines of the magnetic force generated by the permanent magnet 26a. Magnetic carrier particles 26b are held to approach a toner supply roll 24 from the extension end of the permanent magnet 26a. The extend end part of magnetic carrier particles 26b and the outside surface part of the toner supply roll 24 are slightly separated from each other, and the supply toner is formed into a uniform thin layer and is electrified by friction when passing the gap between them.
JP61103473A 1986-02-20 1986-05-06 Developing device for electrostatic latent image Pending JPS62260171A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP61103473A JPS62260171A (en) 1986-05-06 1986-05-06 Developing device for electrostatic latent image
GB8703858A GB2186818B (en) 1986-02-20 1987-02-19 Developing electrostatic latent images
US07/016,739 US4885223A (en) 1986-02-20 1987-02-20 Method and apparatus for developing electrostatic latent image
DE3705469A DE3705469C2 (en) 1986-02-20 1987-02-20
FR878702278A FR2594566B1 (en) 1986-02-20 1987-02-20 METHOD AND APPARATUS FOR DEVELOPING A LATENT ELECTROSTATIC IMAGE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61103473A JPS62260171A (en) 1986-05-06 1986-05-06 Developing device for electrostatic latent image

Publications (1)

Publication Number Publication Date
JPS62260171A true JPS62260171A (en) 1987-11-12

Family

ID=14354976

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61103473A Pending JPS62260171A (en) 1986-02-20 1986-05-06 Developing device for electrostatic latent image

Country Status (1)

Country Link
JP (1) JPS62260171A (en)

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