JPS6465583A - Developing device for copying machine - Google Patents

Developing device for copying machine

Info

Publication number
JPS6465583A
JPS6465583A JP22266187A JP22266187A JPS6465583A JP S6465583 A JPS6465583 A JP S6465583A JP 22266187 A JP22266187 A JP 22266187A JP 22266187 A JP22266187 A JP 22266187A JP S6465583 A JPS6465583 A JP S6465583A
Authority
JP
Japan
Prior art keywords
developer
forming plate
cost
spike
spike rise
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
JP22266187A
Other languages
Japanese (ja)
Other versions
JPH06105373B2 (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 JP62222661A priority Critical patent/JPH06105373B2/en
Priority to US07/237,870 priority patent/US4980728A/en
Publication of JPS6465583A publication Critical patent/JPS6465583A/en
Publication of JPH06105373B2 publication Critical patent/JPH06105373B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

PURPOSE:To reduce the cost of the whole device by forming a developer scraping end for scraping a developer which is adhered to a developing roller and moving it onto a spike rise forming plate, at the end part of a circular arc-like developer spike rise forming plate which is placed between the developing roller and a photosensitive body. CONSTITUTION:When a magnet body 21 rotates, a developer 2 being in a state of a spike rise along a line of magnetic force by magnetic force of magnets N, S also moves as the magnet body 21 rotates. When the developer 2 moves to the end part of a circular arc-like spike rise forming plate 24, 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 the magnets N, S. Subsequently, the photosensitive body 23 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 way, the cost of a developing roller 22 which is occupied large weight in the cost of a developing device A up to the present can be reduced, and accordingly, the cost of the whole device can be reduced.
JP62222661A 1987-09-04 1987-09-04 Copier developing device Expired - Fee Related JPH06105373B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62222661A JPH06105373B2 (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
JP62222661A JPH06105373B2 (en) 1987-09-04 1987-09-04 Copier developing device

Publications (2)

Publication Number Publication Date
JPS6465583A true JPS6465583A (en) 1989-03-10
JPH06105373B2 JPH06105373B2 (en) 1994-12-21

Family

ID=16785947

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62222661A Expired - Fee Related JPH06105373B2 (en) 1987-09-04 1987-09-04 Copier developing device

Country Status (1)

Country Link
JP (1) JPH06105373B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5020471A (en) * 1988-07-06 1991-06-04 Sharp Kabushiki Kaisha Developing unit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52140336A (en) * 1976-05-19 1977-11-22 Hitachi Metals Ltd Electrostatic image developing apparatus
JPS57104958A (en) * 1980-12-23 1982-06-30 Ricoh Co Ltd Donor member in recording device
JPS60158473A (en) * 1984-01-28 1985-08-19 Hitachi Ltd Developing method
JPS60172164A (en) * 1984-02-16 1985-09-05 Yuasa Battery Co Ltd Plate for lead-acid battery
JPS60241074A (en) * 1984-05-16 1985-11-29 Matsushita Electric Ind Co Ltd Developing device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52140336A (en) * 1976-05-19 1977-11-22 Hitachi Metals Ltd Electrostatic image developing apparatus
JPS57104958A (en) * 1980-12-23 1982-06-30 Ricoh Co Ltd Donor member in recording device
JPS60158473A (en) * 1984-01-28 1985-08-19 Hitachi Ltd Developing method
JPS60172164A (en) * 1984-02-16 1985-09-05 Yuasa Battery Co Ltd Plate for lead-acid battery
JPS60241074A (en) * 1984-05-16 1985-11-29 Matsushita Electric Ind Co Ltd Developing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5020471A (en) * 1988-07-06 1991-06-04 Sharp Kabushiki Kaisha Developing unit

Also Published As

Publication number Publication date
JPH06105373B2 (en) 1994-12-21

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Legal Events

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