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JPS5614262A - Developing device - Google Patents

Developing device

Info

Publication number
JPS5614262A
JPS5614262A JP9116579A JP9116579A JPS5614262A JP S5614262 A JPS5614262 A JP S5614262A JP 9116579 A JP9116579 A JP 9116579A JP 9116579 A JP9116579 A JP 9116579A JP S5614262 A JPS5614262 A JP S5614262A
Authority
JP
Japan
Prior art keywords
toner
hopper
scraped
developing roller
developer
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
JP9116579A
Other languages
Japanese (ja)
Other versions
JPS643257B2 (en
Inventor
Junichiro Kanbe
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP9116579A priority Critical patent/JPS5614262A/en
Publication of JPS5614262A publication Critical patent/JPS5614262A/en
Publication of JPS643257B2 publication Critical patent/JPS643257B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To expell the scraped developer immediately from a developing roller and prevent the developing roller from degrading by capturing and conveying the one- component type developer scraped from the developing roller and returning the same to the upper part of a developer vessel.
CONSTITUTION: The insulating toner scraped from a developing roller 1 by an elastic scraper 3 is gathered in the central direction of the developer roller 1 by a screw 4 and is further conveyed to the upper part of a hopper 11 by a screw 5. It is then mixed in the toner in the hopper in a region 9. The screw 4 is cut with grooves 4a of opposite directions with the center as a boundary. In the case of a magnetic toner, the toner scraped from the magnet sleeve 1' by the scraper 3 is captured by a magnet roll 6 and the toner is conveyed to the upper part of the hopper 11 by the magnetic force between the roll 6 and an opposing magnetic roller 7 rotating at the same speed, thus it is mixed into the toner in the hopper in the region 9. Eaves 10 prevent a conveying path 12 from being exerted with the pressure of the toner in the hopper.
COPYRIGHT: (C)1981,JPO&Japio
JP9116579A 1979-07-16 1979-07-16 Developing device Granted JPS5614262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9116579A JPS5614262A (en) 1979-07-16 1979-07-16 Developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9116579A JPS5614262A (en) 1979-07-16 1979-07-16 Developing device

Publications (2)

Publication Number Publication Date
JPS5614262A true JPS5614262A (en) 1981-02-12
JPS643257B2 JPS643257B2 (en) 1989-01-20

Family

ID=14018859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9116579A Granted JPS5614262A (en) 1979-07-16 1979-07-16 Developing device

Country Status (1)

Country Link
JP (1) JPS5614262A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56125776A (en) * 1980-03-08 1981-10-02 Mita Ind Co Ltd Developing device of electrostatic latent image
JPS58219577A (en) * 1982-06-16 1983-12-21 Ricoh Co Ltd Developing device
JPS6380570U (en) * 1986-11-14 1988-05-27

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036133A (en) * 1973-07-24 1975-04-05
JPS5323638A (en) * 1976-08-18 1978-03-04 Esukofuotsuto Risaachi As Toner powder spreading device for electrostatic copying machine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036133A (en) * 1973-07-24 1975-04-05
JPS5323638A (en) * 1976-08-18 1978-03-04 Esukofuotsuto Risaachi As Toner powder spreading device for electrostatic copying machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56125776A (en) * 1980-03-08 1981-10-02 Mita Ind Co Ltd Developing device of electrostatic latent image
JPH0246950B2 (en) * 1980-03-08 1990-10-17 Mita Industrial Co Ltd
JPS58219577A (en) * 1982-06-16 1983-12-21 Ricoh Co Ltd Developing device
JPS6380570U (en) * 1986-11-14 1988-05-27

Also Published As

Publication number Publication date
JPS643257B2 (en) 1989-01-20

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