GB1396979A - Process and apparatus of developing electrostatic latent images - Google Patents

Process and apparatus of developing electrostatic latent images

Info

Publication number
GB1396979A
GB1396979A GB5778172A GB5778172A GB1396979A GB 1396979 A GB1396979 A GB 1396979A GB 5778172 A GB5778172 A GB 5778172A GB 5778172 A GB5778172 A GB 5778172A GB 1396979 A GB1396979 A GB 1396979A
Authority
GB
United Kingdom
Prior art keywords
toner
donor
drum
developing
transferred
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.)
Expired
Application number
GB5778172A
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 Production Printing Holding BV
Original Assignee
Oce Van der Grinten NV
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 Oce Van der Grinten NV filed Critical Oce Van der Grinten NV
Priority to GB5778172A priority Critical patent/GB1396979A/en
Priority to DE19732361418 priority patent/DE2361418A1/en
Priority to FR7344552A priority patent/FR2327577A1/en
Publication of GB1396979A publication Critical patent/GB1396979A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
    • G03G15/0914—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush with a one-component toner
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0602—Developer
    • G03G2215/0604—Developer solid type
    • G03G2215/0614—Developer solid type one-component
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0634—Developing device
    • G03G2215/0636—Specific type of dry developer device

Abstract

1396979 Developing OCE-VAN DER GRINTEN N V 14 Dec 1972 57781/72 Heading G2H In a method of developing a latent electrostatic image on a drum 9 the toner is transferred from a magnetic brush device 1 on to an intermediate donor member 6 under the influence of an electric field (3000-10,000 volts per cm) between the device 1 and the donor 6 and is transferred from the donor to the surface of the drum 9. A potential 10 may be applied between the donor and the drum to inhibit transfer of toner in the non-image areas. The toner employed has a specific resistance of between 10<SP>10</SP> and 10<SP>16</SP> ohmcm and may comprise a magnetically attractable component and an insulating binder component (e.g. a thermoplastic resin). Examples of both these components are given. The magnetic element of the magnetic brush may be bi- or multipolar and may circulate at a velocity different from the surface velocity of surrounding cylinder 3 or may be stationary with respect to the cylinder. A knife 11 removes surplus toner.
GB5778172A 1972-12-14 1972-12-14 Process and apparatus of developing electrostatic latent images Expired GB1396979A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB5778172A GB1396979A (en) 1972-12-14 1972-12-14 Process and apparatus of developing electrostatic latent images
DE19732361418 DE2361418A1 (en) 1972-12-14 1973-12-10 METHOD AND DEVICE FOR DEVELOPING AN ELECTROSTATIC LATENT IMAGE
FR7344552A FR2327577A1 (en) 1972-12-14 1973-12-13 METHOD AND APPARATUS FOR DEVELOPING LATENT ELECTROSTATIC IMAGES

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5778172A GB1396979A (en) 1972-12-14 1972-12-14 Process and apparatus of developing electrostatic latent images

Publications (1)

Publication Number Publication Date
GB1396979A true GB1396979A (en) 1975-06-11

Family

ID=10480002

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5778172A Expired GB1396979A (en) 1972-12-14 1972-12-14 Process and apparatus of developing electrostatic latent images

Country Status (3)

Country Link
DE (1) DE2361418A1 (en)
FR (1) FR2327577A1 (en)
GB (1) GB1396979A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689285A (en) * 1985-09-04 1987-08-25 Matsushita Electric Industrial Co., Ltd. Method for developing electrostatic image using magnetic brush and one component magnetic toner

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2547118B2 (en) * 1975-10-21 1977-12-08 Elfotec Ag, Zumikon (Schweiz) USE OF A SINGLE COMPONENT MAGNETIC TONER IN AN ELECTROPHOTOGRAPHIC IMAGE RECORDING PROCESS
US4121931A (en) * 1976-06-30 1978-10-24 Minnesota Mining And Manufacturing Company Electrographic development process
JPS5368244A (en) * 1976-11-29 1978-06-17 Sharp Corp Developing device
JPS53129639A (en) * 1977-04-19 1978-11-11 Mita Industrial Co Ltd Method of and device for electrostatic copying
EP0002845B1 (en) * 1977-12-22 1982-02-17 Agfa-Gevaert N.V. Developing device for xerographic copying machines
KR910003727B1 (en) * 1986-12-02 1991-06-08 마쯔시다덴기산교 가부시기가이샤 Developing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689285A (en) * 1985-09-04 1987-08-25 Matsushita Electric Industrial Co., Ltd. Method for developing electrostatic image using magnetic brush and one component magnetic toner

Also Published As

Publication number Publication date
FR2327577A1 (en) 1977-05-06
DE2361418A1 (en) 1974-06-20
FR2327577B1 (en) 1978-03-24

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee