FR2317689A1 - Master negatives for colour copying - prepd. by transferring latent images from photo-conductive layers onto dielectric layers, developing and fixing - Google Patents

Master negatives for colour copying - prepd. by transferring latent images from photo-conductive layers onto dielectric layers, developing and fixing

Info

Publication number
FR2317689A1
FR2317689A1 FR7521263A FR7521263A FR2317689A1 FR 2317689 A1 FR2317689 A1 FR 2317689A1 FR 7521263 A FR7521263 A FR 7521263A FR 7521263 A FR7521263 A FR 7521263A FR 2317689 A1 FR2317689 A1 FR 2317689A1
Authority
FR
France
Prior art keywords
developing
latent images
fixing
prepd
photo
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.)
Granted
Application number
FR7521263A
Other languages
French (fr)
Other versions
FR2317689B1 (en
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.)
Sublistatic Holding SA
Original Assignee
Sublistatic Holding SA
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 Sublistatic Holding SA filed Critical Sublistatic Holding SA
Priority to FR7521263A priority Critical patent/FR2317689A1/en
Publication of FR2317689A1 publication Critical patent/FR2317689A1/en
Application granted granted Critical
Publication of FR2317689B1 publication Critical patent/FR2317689B1/fr
Granted 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
    • G03G9/09—Colouring agents for toner particles
    • G03G9/0906—Organic dyes
    • G03G9/0908—Anthracene dyes
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/22—Processes involving a combination of more than one step according to groups G03G13/02 - G03G13/20
    • 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
    • G03G9/09—Colouring agents for toner particles
    • G03G9/0926—Colouring agents for toner particles characterised by physical or chemical properties

Abstract

Master negative for making coloured copies are produced by (a) consecutively and electrostatically transferring latent images, corresp. to colour-selection of an original from the photoconductive layer, on which they are formed consecutively, onto a dielectric layer, in a way such that they are superimposed; (b) developing each of the latent images transferred in this way before transfer of the next image, by using a dry, esp, magnetic or a liq. developer which contains a dye volatilising at 120-220 degrees C and which corresponds to the original chromatic selection of the transferred image, and (c) fixing the image obtd. after each developing step onto the dielectric surface. Pref. colour reproduction. Contrast-rich images free from background soiling are obtd. when using liq. developer.
FR7521263A 1975-07-07 1975-07-07 Master negatives for colour copying - prepd. by transferring latent images from photo-conductive layers onto dielectric layers, developing and fixing Granted FR2317689A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7521263A FR2317689A1 (en) 1975-07-07 1975-07-07 Master negatives for colour copying - prepd. by transferring latent images from photo-conductive layers onto dielectric layers, developing and fixing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7521263A FR2317689A1 (en) 1975-07-07 1975-07-07 Master negatives for colour copying - prepd. by transferring latent images from photo-conductive layers onto dielectric layers, developing and fixing

Publications (2)

Publication Number Publication Date
FR2317689A1 true FR2317689A1 (en) 1977-02-04
FR2317689B1 FR2317689B1 (en) 1977-12-16

Family

ID=9157603

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7521263A Granted FR2317689A1 (en) 1975-07-07 1975-07-07 Master negatives for colour copying - prepd. by transferring latent images from photo-conductive layers onto dielectric layers, developing and fixing

Country Status (1)

Country Link
FR (1) FR2317689A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983000235A1 (en) * 1981-06-29 1983-01-20 Hendriks, Dieter Electrostatic, magnetic developers, preparation and utilizations thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1422991A1 (en) * 1962-03-01 1970-04-16 Agfa Gevaert Ag Electrophotographic duplication process

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1422991A1 (en) * 1962-03-01 1970-04-16 Agfa Gevaert Ag Electrophotographic duplication process

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983000235A1 (en) * 1981-06-29 1983-01-20 Hendriks, Dieter Electrostatic, magnetic developers, preparation and utilizations thereof

Also Published As

Publication number Publication date
FR2317689B1 (en) 1977-12-16

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse