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GB1288100A - - Google Patents

Info

Publication number
GB1288100A
GB1288100A GB491970A GB491970A GB1288100A GB 1288100 A GB1288100 A GB 1288100A GB 491970 A GB491970 A GB 491970A GB 491970 A GB491970 A GB 491970A GB 1288100 A GB1288100 A GB 1288100A
Authority
GB
United Kingdom
Prior art keywords
gelatin
produced
finely divided
particles
pigment particles
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
GB491970A
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 filed Critical
Publication of GB1288100A publication Critical patent/GB1288100A/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
    • G03G9/13—Developers with toner particles in liquid developer mixtures characterised by polymer components

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Liquid Developers In Electrophotography (AREA)

Abstract

1288100 Electro-photography RANK XEROX Ltd 2 Feb 1970 [10 Feb 1969] 4919/70 Heading G2H In the production of a printing plate by deposition of gelatin toner from a liquid developer on to an electrostatic image, the developer comprises finely divided gelatin particles, finely divided pigment particles in a proportion of 1/5 to 1/100 of the gelatin, and a carrier liquid having an electrical resistivity of greater than 10<SP>10</SP> ohm cm. The pigment particles, which may be positively or negatively charged, are present to render the gelatin image readily visible. The gelatin particles may have a particle size of less than 5 microns. Separate dispersions of gelatin and pigment particles in carrier liquid may be mixed. The gelatin dispersion may be produced from a concentrate comprising a varnish (produced from linseed oil and rosin-modified phenol-formaldehyde), toluene, xylene, and a non-ionic surface active agent. Alternative methods for production of the finely divided gelatin are specified. When the electrostatic image is produced using zinc oxide as photo-conductive material, the zinc oxide is removed by an acid treatment after hardening of the gelatin.
GB491970A 1969-02-10 1970-02-02 Expired GB1288100A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP996869 1969-02-10

Publications (1)

Publication Number Publication Date
GB1288100A true GB1288100A (en) 1972-09-06

Family

ID=11734712

Family Applications (1)

Application Number Title Priority Date Filing Date
GB491970A Expired GB1288100A (en) 1969-02-10 1970-02-02

Country Status (3)

Country Link
CA (1) CA925744A (en)
DE (1) DE2005965A1 (en)
GB (1) GB1288100A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE1023153B1 (en) 2015-10-20 2016-12-02 Cnh Industrial Belgium Nv BALING PRESS AND METHOD FOR REMOVING A PROP HARVESTING MATERIAL CONTAINED IN THE BALL PRESS OF A BALING PRESS

Also Published As

Publication number Publication date
DE2005965A1 (en) 1970-09-03
CA925744A (en) 1973-05-08

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees