FR2362428A1 - Powder applicator for electrostatic copier - charges toner particles passing narrow gap on drum by dielectric strip - Google Patents

Powder applicator for electrostatic copier - charges toner particles passing narrow gap on drum by dielectric strip

Info

Publication number
FR2362428A1
FR2362428A1 FR7624936A FR7624936A FR2362428A1 FR 2362428 A1 FR2362428 A1 FR 2362428A1 FR 7624936 A FR7624936 A FR 7624936A FR 7624936 A FR7624936 A FR 7624936A FR 2362428 A1 FR2362428 A1 FR 2362428A1
Authority
FR
France
Prior art keywords
toner particles
drum
powder applicator
narrow gap
particles passing
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.)
Withdrawn
Application number
FR7624936A
Other languages
French (fr)
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.)
ESKOFOT RESEARCH AS
Original Assignee
ESKOFOT RESEARCH AS
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
Priority claimed from NL7609086A external-priority patent/NL7609086A/en
Application filed by ESKOFOT RESEARCH AS filed Critical ESKOFOT RESEARCH AS
Priority to GB34185/76A priority Critical patent/GB1549413A/en
Priority to FR7624936A priority patent/FR2362428A1/en
Priority claimed from DE19762636932 external-priority patent/DE2636932A1/en
Priority to CH1051976A priority patent/CH610421A5/en
Priority to AU19176/76A priority patent/AU499471B2/en
Priority to US05/740,662 priority patent/US4232628A/en
Priority claimed from US05/740,662 external-priority patent/US4232628A/en
Priority claimed from BE6045759A external-priority patent/BE848236A/en
Publication of FR2362428A1 publication Critical patent/FR2362428A1/en
Withdrawn legal-status Critical Current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

Landscapes

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

Abstract

A powder applicator for photo-electric copiers is designed for inexpensive one-component toners without inherent magnetic properties and without any subsequent additives. No magnetic or electrostatic carrier is required. The paper strip (10) with the latent charge images is kept in contact with the powder application drum (14). An inclined wall (18) of a toner container (22) carries a sealing strip (19). The opposite wall (20) carries a blade (21) which effects the electrostatic charging of the toner particles and is made of a flexible material with high dielectric charging of the toner particles and is made of a flexible material with high dielectric properties such as polyethylene, polycarbonate or Mylar (RTM). The preferred toner consists of polyamide resin or polystyrene of 15-35 mu (20-30 mu) diameter. The toner particles are transferred to the latent charge image by a thrust plate (PS).
FR7624936A 1976-08-16 1976-08-17 Powder applicator for electrostatic copier - charges toner particles passing narrow gap on drum by dielectric strip Withdrawn FR2362428A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB34185/76A GB1549413A (en) 1976-08-16 1976-08-17 Method and apparatus for triboelectrically charging toner particles in a xerographic system
FR7624936A FR2362428A1 (en) 1976-08-16 1976-08-17 Powder applicator for electrostatic copier - charges toner particles passing narrow gap on drum by dielectric strip
CH1051976A CH610421A5 (en) 1976-08-16 1976-08-18 Powdering device for electrostatic copiers
AU19176/76A AU499471B2 (en) 1976-08-16 1976-11-01 A toner applicator for electrostatic copiers
US05/740,662 US4232628A (en) 1976-08-16 1976-11-10 Toner applicator for electrostatic copier

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
NL7609086A NL7609086A (en) 1976-08-16 1976-08-16 Powder applicator for electrostatic copier - charges toner particles passing narrow gap on drum by dielectric strip
DE19762636932 DE2636932A1 (en) 1976-08-16 1976-08-17 Powder applicator for electrostatic copier - charges toner particles passing narrow gap on drum by dielectric strip
FR7624936A FR2362428A1 (en) 1976-08-16 1976-08-17 Powder applicator for electrostatic copier - charges toner particles passing narrow gap on drum by dielectric strip
US05/740,662 US4232628A (en) 1976-08-16 1976-11-10 Toner applicator for electrostatic copier
BE848236 1976-11-10
BE6045759A BE848236A (en) 1976-11-10 1976-11-10 INK APPLICATOR FOR ELECTROSTATIC COPIER,

Publications (1)

Publication Number Publication Date
FR2362428A1 true FR2362428A1 (en) 1978-03-17

Family

ID=27543144

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7624936A Withdrawn FR2362428A1 (en) 1976-08-16 1976-08-17 Powder applicator for electrostatic copier - charges toner particles passing narrow gap on drum by dielectric strip

Country Status (1)

Country Link
FR (1) FR2362428A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1251476A (en) * 1958-07-08 1961-01-20 Rank Xerox Ltd Method for developing electrostatic images and compositions therefor
FR2119341A5 (en) * 1970-12-23 1972-08-04 Ibm
FR2358691A1 (en) * 1976-07-16 1978-02-10 Ricoh Kk DEVELOPMENT DEVICE FOR DRY TYPE REPROGRAPHY EQUIPMENT

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1251476A (en) * 1958-07-08 1961-01-20 Rank Xerox Ltd Method for developing electrostatic images and compositions therefor
FR2119341A5 (en) * 1970-12-23 1972-08-04 Ibm
FR2358691A1 (en) * 1976-07-16 1978-02-10 Ricoh Kk DEVELOPMENT DEVICE FOR DRY TYPE REPROGRAPHY EQUIPMENT

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Legal Events

Date Code Title Description
ST Notification of lapse