JPS55144255A - Developing method and its apparatus - Google Patents
Developing method and its apparatusInfo
- 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
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
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)
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)
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 |
-
1979
- 1979-04-28 JP JP5264179A patent/JPS55144255A/en active Pending
Patent Citations (2)
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)
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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