JPS55144255A - Developing method and its apparatus - Google Patents

Developing method and its apparatus

Info

Publication number
JPS55144255A
JPS55144255A JP5264179A JP5264179A JPS55144255A JP S55144255 A JPS55144255 A JP S55144255A JP 5264179 A JP5264179 A JP 5264179A JP 5264179 A JP5264179 A JP 5264179A JP S55144255 A JPS55144255 A JP S55144255A
Authority
JP
Japan
Prior art keywords
sleeve
gradation
electric field
formula
magnetic 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.)
Pending
Application number
JP5264179A
Other languages
Japanese (ja)
Inventor
Junichiro Kanbe
Tsutomu Toyono
Nagao Hosono
Toru Takahashi
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
Priority to JP5264179A priority Critical patent/JPS55144255A/en
Application filed by Canon Inc filed Critical Canon Inc
Priority to CA000332015A priority patent/CA1138723A/en
Priority to AU49116/79A priority patent/AU531301B2/en
Priority to GB7925725A priority patent/GB2028176B/en
Priority to DE19792930619 priority patent/DE2930619A1/en
Priority to FR7919482A priority patent/FR2433780B1/en
Publication of JPS55144255A publication Critical patent/JPS55144255A/en
Priority to US06/264,516 priority patent/US4395476A/en
Priority to US06/426,979 priority patent/US4473627A/en
Priority to SG243/83A priority patent/SG24383G/en
Priority to HK357/84A priority patent/HK35784A/en
Priority to US07/022,598 priority patent/US4913088A/en
Priority to US07/455,243 priority patent/US5044310A/en
Priority to US07/545,134 priority patent/US5032485A/en
Priority to US07/671,019 priority patent/US5096798A/en
Priority to US07/741,077 priority patent/US5194359A/en
Pending legal-status Critical Current

Links

Landscapes

  • Magnetic Brush Developing In Electrophotography (AREA)
  • Developing For Electrophotography (AREA)

Abstract

PURPOSE: To enable high fidelity gradation to be reproduced, by applying a low frequency electric field of a given value, and transferring a magnetic developer to a nonimage area under a necessary magnetic restriction.
CONSTITUTION: Electrostatic latent image bearing member 71 has an insulating layer on a CdS layer, and backside electrode 72, too. Nonmagnetic sleeve 77 having fixed permanent magnets 77 in the inside rotates in the same direction as that of member 71 at the equal speed. One component type magnetic developer 34 in vessel 79 is attached to sleeve 77, regulated in thickness with steel blade 76, and comes to a developing section. A voltage in the range represented by formula I between electrode 72 and the conductive part of sleeve 73 is applied from variable alternating voltage source 75. In formula I, the amplitude of the alternating electric field is Vp-p volts, and frequency is (f) Hz. As a result, a high quality developed image superior in gradation, high in image sharpness, and free of ground fog is obtd.
COPYRIGHT: (C)1980,JPO&Japio
JP5264179A 1978-07-28 1979-04-28 Developing method and its apparatus Pending JPS55144255A (en)

Priority Applications (15)

Application Number Priority Date Filing Date Title
JP5264179A JPS55144255A (en) 1979-04-28 1979-04-28 Developing method and its apparatus
CA000332015A CA1138723A (en) 1978-07-28 1979-07-18 Developing method for developer transfer under electrical bias and apparatus therefor
AU49116/79A AU531301B2 (en) 1978-07-28 1979-07-20 Developing with an electrical bias
GB7925725A GB2028176B (en) 1978-07-28 1979-07-24 Developing method for developer transfer under electrical bias
DE19792930619 DE2930619A1 (en) 1978-07-28 1979-07-27 METHOD FOR DEVELOPING A LATENT IMAGE AND DEVICE THEREFOR
FR7919482A FR2433780B1 (en) 1978-07-28 1979-07-27 DEVELOPMENT METHOD WITH TRANSFER OF THE DEVELOPMENT AGENT UNDER ELECTRICAL POLARIZATION AND APPARATUS FOR CARRYING OUT SAID METHOD
US06/264,516 US4395476A (en) 1978-07-28 1981-05-18 Developing method for developer transfer under A.C. electrical bias and apparatus therefor
US06/426,979 US4473627A (en) 1978-07-28 1982-09-29 Developing method for developer transfer under electrical bias and apparatus therefor
SG243/83A SG24383G (en) 1978-07-28 1983-05-11 Development of electrostatic latent images
HK357/84A HK35784A (en) 1978-07-28 1984-04-26 Development of electrostatic latent images
US07/022,598 US4913088A (en) 1978-07-28 1987-03-04 Apparatus for developer transfer under electrical bias
US07/455,243 US5044310A (en) 1978-07-28 1989-12-22 Developing apparatus for non-magnetic developer
US07/545,134 US5032485A (en) 1978-07-28 1990-06-27 Developing method for one-component developer
US07/671,019 US5096798A (en) 1978-07-28 1991-03-18 Developing method for one-component developer
US07/741,077 US5194359A (en) 1978-07-28 1991-08-06 Developing method for one component developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5264179A JPS55144255A (en) 1979-04-28 1979-04-28 Developing method and its apparatus

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP2091455A Division JPH0614223B2 (en) 1990-04-05 1990-04-05 Development device

Publications (1)

Publication Number Publication Date
JPS55144255A true JPS55144255A (en) 1980-11-11

Family

ID=12920451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5264179A Pending JPS55144255A (en) 1978-07-28 1979-04-28 Developing method and its apparatus

Country Status (1)

Country Link
JP (1) JPS55144255A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129447A (en) * 1982-01-28 1983-08-02 Toshiba Corp Copying device
JPS616656A (en) * 1984-06-20 1986-01-13 Toshiba Corp Developer
JPS62166363A (en) * 1986-01-20 1987-07-22 Fuji Xerox Co Ltd Developing device
JPH01150181A (en) * 1987-12-08 1989-06-13 Matsushita Electric Ind Co Ltd Developing device
JPH01150182A (en) * 1987-12-08 1989-06-13 Matsushita Electric Ind Co Ltd Developing device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5392105A (en) * 1977-01-24 1978-08-12 Matsushita Electric Ind Co Ltd Pad for magnetic tape
JPS5392107A (en) * 1977-01-25 1978-08-12 Itsuki Ban Casstte type magnetic recorder reproducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5392105A (en) * 1977-01-24 1978-08-12 Matsushita Electric Ind Co Ltd Pad for magnetic tape
JPS5392107A (en) * 1977-01-25 1978-08-12 Itsuki Ban Casstte type magnetic recorder reproducer

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58129447A (en) * 1982-01-28 1983-08-02 Toshiba Corp Copying device
JPS616656A (en) * 1984-06-20 1986-01-13 Toshiba Corp Developer
JPH0642081B2 (en) * 1984-06-20 1994-06-01 株式会社東芝 Developer
JPS62166363A (en) * 1986-01-20 1987-07-22 Fuji Xerox Co Ltd Developing device
JPH01150181A (en) * 1987-12-08 1989-06-13 Matsushita Electric Ind Co Ltd Developing device
JPH01150182A (en) * 1987-12-08 1989-06-13 Matsushita Electric Ind Co Ltd Developing device

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