FR2308960A1 - Electrostatic image development method - permits stabilisation of powder developer electrical properties in variable humidity conditions - Google Patents

Electrostatic image development method - permits stabilisation of powder developer electrical properties in variable humidity conditions

Info

Publication number
FR2308960A1
FR2308960A1 FR7612040A FR7612040A FR2308960A1 FR 2308960 A1 FR2308960 A1 FR 2308960A1 FR 7612040 A FR7612040 A FR 7612040A FR 7612040 A FR7612040 A FR 7612040A FR 2308960 A1 FR2308960 A1 FR 2308960A1
Authority
FR
France
Prior art keywords
developer
electrical properties
electrostatic image
humidity conditions
image development
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
FR7612040A
Other languages
French (fr)
Other versions
FR2308960B1 (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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of FR2308960A1 publication Critical patent/FR2308960A1/en
Application granted granted Critical
Publication of FR2308960B1 publication Critical patent/FR2308960B1/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
    • 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
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

The developing method for electrostatic images is carried on an insulating surface and uses a dry powder which is brought into contact. The developer consists of a mixture of developing powder and carrying particles. The method consists of maintaining the developer at a temp. at least equal to a predetermined temp. at which the electrical properties of the developer are practically stabilised with respect to humidity variations. The developer is heated so as to bring its temperature above 27 deg.C, namely, between 29.5 deg.C and 43 deg.C. The developer can be heated directly or by radiation or conductor means.
FR7612040A 1975-04-25 1976-04-23 Electrostatic image development method - permits stabilisation of powder developer electrical properties in variable humidity conditions Granted FR2308960A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US57167475A 1975-04-25 1975-04-25

Publications (2)

Publication Number Publication Date
FR2308960A1 true FR2308960A1 (en) 1976-11-19
FR2308960B1 FR2308960B1 (en) 1978-11-17

Family

ID=24284605

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7612040A Granted FR2308960A1 (en) 1975-04-25 1976-04-23 Electrostatic image development method - permits stabilisation of powder developer electrical properties in variable humidity conditions

Country Status (1)

Country Link
FR (1) FR2308960A1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919672A (en) * 1956-11-30 1960-01-05 Burroughs Corp Electrographic inking powder moisture control

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2919672A (en) * 1956-11-30 1960-01-05 Burroughs Corp Electrographic inking powder moisture control

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
REVUE US: "RESEARCH DISCLOSURE", AOUT 1975, PAGES 7 A 9 "ELECTROGRAPHIC APPARATUS AND PROCESS FOR HUMIDITY STABILIZED DEVELOPMENT") *

Also Published As

Publication number Publication date
FR2308960B1 (en) 1978-11-17

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Legal Events

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