GB1451366A - Liquid developer for and a method of developing an electrostatic image - Google Patents

Liquid developer for and a method of developing an electrostatic image

Info

Publication number
GB1451366A
GB1451366A GB4562473A GB4562473A GB1451366A GB 1451366 A GB1451366 A GB 1451366A GB 4562473 A GB4562473 A GB 4562473A GB 4562473 A GB4562473 A GB 4562473A GB 1451366 A GB1451366 A GB 1451366A
Authority
GB
United Kingdom
Prior art keywords
particles
dielectric constant
developer
conductive
liquid 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.)
Expired
Application number
GB4562473A
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.)
AUSTRALIA Department OF Manufacturing IND
Original Assignee
AUSTRALIA Department OF Manufacturing IND
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 AUSTRALIA Department OF Manufacturing IND filed Critical AUSTRALIA Department OF Manufacturing IND
Publication of GB1451366A publication Critical patent/GB1451366A/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
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/12—Developers with toner particles in liquid developer mixtures

Abstract

1451366 Liquid developer AUSTRALIA DEPT OF MEG-INDUSTRY 28 Sept 1973 [4 Oct 1972] 45624/73 Heading G2H A liquid developer comprises, in separate co-existence within an insulating carrier liquid having a resistivity greater than 10<SP>10</SP> ohm.cm. and a dielectric constant less than 3, (a) toner particles having a dielectric constant of the same order of magnitude as the carrier liquid and (b) movement inducing particles constituted predominently of metal and having a relatively high dielectric constant capable of charge exchange with the surface containing a latent image to be developed and with surrounding particles, so that they move around within the developer causing agitation. The toner particles may be colouring medium coated with a resin. Examples of suitable mediums and resins are given. The particle (b) may be aluminium bronze, zinc, aluminium, nickel, copper, tin, iron, chromium or an intermetallic compound and may be resin coated to lower their effective dielectric constant. The developer is advantageously used to develop images on a photo-conductive surface that has been rendered more conductive by the inclusion in the surface layer thereof particulate conductive particles e.g. metal particles or another medium which increases conductivity. Examples of suitable photo-conductive surface are given.
GB4562473A 1972-10-04 1973-09-28 Liquid developer for and a method of developing an electrostatic image Expired GB1451366A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPB069172 1972-10-04

Publications (1)

Publication Number Publication Date
GB1451366A true GB1451366A (en) 1976-09-29

Family

ID=3765391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4562473A Expired GB1451366A (en) 1972-10-04 1973-09-28 Liquid developer for and a method of developing an electrostatic image

Country Status (8)

Country Link
BE (1) BE805666A (en)
CA (1) CA1000099A (en)
DE (1) DE2349365A1 (en)
FR (1) FR2202313B1 (en)
GB (1) GB1451366A (en)
IT (1) IT999615B (en)
NL (1) NL7313584A (en)
SE (1) SE385982B (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3198649A (en) * 1959-05-13 1965-08-03 Commw Of Australia Controlled and fixing liquid developer for electro-photography and electroradiography
US3406062A (en) * 1965-06-09 1968-10-15 Fairchild Camera Instr Co Method for liquid development of electrostatic images using conductive particles as floating electrodes
AU425595B2 (en) * 1968-12-30 1972-06-29 The Commonwealth Of Australia Edge and latitude developer

Also Published As

Publication number Publication date
SE385982B (en) 1976-07-26
FR2202313A1 (en) 1974-05-03
BE805666A (en) 1974-02-01
CA1000099A (en) 1976-11-23
IT999615B (en) 1976-03-10
FR2202313B1 (en) 1978-11-10
NL7313584A (en) 1974-04-08
DE2349365A1 (en) 1974-04-18

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Legal Events

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