JPS5489740A - Electrostatic image developing device - Google Patents

Electrostatic image developing device

Info

Publication number
JPS5489740A
JPS5489740A JP15955877A JP15955877A JPS5489740A JP S5489740 A JPS5489740 A JP S5489740A JP 15955877 A JP15955877 A JP 15955877A JP 15955877 A JP15955877 A JP 15955877A JP S5489740 A JPS5489740 A JP S5489740A
Authority
JP
Japan
Prior art keywords
magnetic
toner
toner layer
cylinder
elastic body
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
JP15955877A
Other languages
Japanese (ja)
Other versions
JPS6255148B2 (en
Inventor
Nagao Hosono
Toru Takahashi
Junichiro Kanbe
Tsutomu Toyono
Toshiharu Nakamura
Yasuyuki Tamura
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 JP15955877A priority Critical patent/JPS5489740A/en
Publication of JPS5489740A publication Critical patent/JPS5489740A/en
Publication of JPS6255148B2 publication Critical patent/JPS6255148B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To obtain even toner images of high resolving power by defining the thickness of the magnetic toner layer on a developer supporting means with a doctor blade then evening the surface with an elastic body to the toner layer of a uniform thickness.
CONSTITUTION: 1 is a photosensitive drum as an electrostatic image holding means and 8 a developer supporting means provided in opposition to this holding means. A magnet 9 rotates in the magnetic cylinder of said means to scoope up magnetic toner 12 onto the cylinder and convey the same. The thickness of the toner layer on the cylinder 12 is defined with a doctor blade 10. Further an elastic body 13 is supported in a cantilever state on the downstream side of the doctor blade 10 and its free end is opposedly provided in face contact with or by leaving an extremely slight spacing from the surface of the non-magnetic cylinder opposed to the magnetic pole position of the magnetic roller 9. The surface of the toner layer which has been evened by the abovementioned elastic body 13 is pressed to even the density of the toner layer. Friction charging of the toner is made surer by this pressing.
COPYRIGHT: (C)1979,JPO&Japio
JP15955877A 1977-12-27 1977-12-27 Electrostatic image developing device Granted JPS5489740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15955877A JPS5489740A (en) 1977-12-27 1977-12-27 Electrostatic image developing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15955877A JPS5489740A (en) 1977-12-27 1977-12-27 Electrostatic image developing device

Publications (2)

Publication Number Publication Date
JPS5489740A true JPS5489740A (en) 1979-07-17
JPS6255148B2 JPS6255148B2 (en) 1987-11-18

Family

ID=15696353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15955877A Granted JPS5489740A (en) 1977-12-27 1977-12-27 Electrostatic image developing device

Country Status (1)

Country Link
JP (1) JPS5489740A (en)

Cited By (9)

* 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
JPS5729062A (en) * 1980-07-29 1982-02-16 Minolta Camera Co Ltd Magnetic brush developing device
JPS5737379A (en) * 1980-08-19 1982-03-01 Canon Inc Developing device
JPS5766454A (en) * 1980-10-13 1982-04-22 Ricoh Co Ltd Magnetic brush development device
JPS57104957A (en) * 1980-12-23 1982-06-30 Ricoh Co Ltd Magnetic brush developer
JPS57136952U (en) * 1981-02-20 1982-08-26
JPS57180352U (en) * 1981-05-11 1982-11-16
JPS5988761A (en) * 1982-11-15 1984-05-22 Ricoh Co Ltd Developing device
JPS63314572A (en) * 1988-05-20 1988-12-22 Mita Ind Co Ltd Electrostatic latent image developing device

Cited By (14)

* 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
JPS5729062A (en) * 1980-07-29 1982-02-16 Minolta Camera Co Ltd Magnetic brush developing device
JPS6345594B2 (en) * 1980-07-29 1988-09-09 Minolta Camera Kk
JPH0139108B2 (en) * 1980-08-19 1989-08-18 Canon Kk
JPS5737379A (en) * 1980-08-19 1982-03-01 Canon Inc Developing device
JPS5766454A (en) * 1980-10-13 1982-04-22 Ricoh Co Ltd Magnetic brush development device
JPS57104957A (en) * 1980-12-23 1982-06-30 Ricoh Co Ltd Magnetic brush developer
JPS57136952U (en) * 1981-02-20 1982-08-26
JPH0138601Y2 (en) * 1981-02-20 1989-11-17
JPS57180352U (en) * 1981-05-11 1982-11-16
JPS5988761A (en) * 1982-11-15 1984-05-22 Ricoh Co Ltd Developing device
JPS63314572A (en) * 1988-05-20 1988-12-22 Mita Ind Co Ltd Electrostatic latent image developing device
JPH0411869B2 (en) * 1988-05-20 1992-03-02 Mita Industrial Co Ltd

Also Published As

Publication number Publication date
JPS6255148B2 (en) 1987-11-18

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