GB2122512A - Thermally isolated developer pump - Google Patents

Thermally isolated developer pump

Info

Publication number
GB2122512A
GB2122512A GB08219439A GB8219439A GB2122512A GB 2122512 A GB2122512 A GB 2122512A GB 08219439 A GB08219439 A GB 08219439A GB 8219439 A GB8219439 A GB 8219439A GB 2122512 A GB2122512 A GB 2122512A
Authority
GB
United Kingdom
Prior art keywords
developer
motor
magnet
liquid
pump
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Withdrawn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
GB08219439A
Inventor
Jerome Faucher
Paul J Baptiste
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.)
Nashua Corp
Original Assignee
Nashua Corp
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 Nashua Corp filed Critical Nashua Corp
Publication of GB2122512A publication Critical patent/GB2122512A/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Withdrawn legal-status Critical Current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
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/104—Preparing, mixing, transporting or dispensing developer
    • 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
    • G03G15/10—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer
    • G03G15/101—Apparatus for electrographic processes using a charge pattern for developing using a liquid developer for wetting the recording material

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Wet Developing In Electrophotography (AREA)

Abstract

In the liquid developing system (24) for an electrostatic copier (10), the liquid developer (26) is ordinarily pumped to the developer electrode (30) through a conduit (86) from a storage tank (28). Generally, the motor (50) for the liquid pump housing (82) is located in the storage tank (28) above the level of the liquid developer, with motor shafts extending down into the developer to the pump housing. In this type of arrangement, the heat generated by the pump motor (50) is transferred to the liquid developer thereby raising the temperature of the developer to the point that it produces an undesirable "halo" effect on the developed image. In order to eliminate this "halo" effect, the heat generating pump motor (50) of the present device is thermally isolated from the liquid developer tank (28) for the electrostatic copier. In one embodiment, the pump impeller (90), with a first magnet (92) fixed to it, is magnetically coupled to a second magnet (70) disposed outside the tank. In this embodiment, the second magnet (70) is coupled to a pulley (72) driven by a belt (94) which is coupled to the remote motor (50) by pulley (62). In another embodiment, the second magnet (130) is mounted on the motor shaft.
GB08219439A 1981-11-18 1981-11-18 Thermally isolated developer pump Withdrawn GB2122512A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1981/001529 WO1983001842A1 (en) 1981-11-18 1981-11-18 Thermally isolated developer pump

Publications (1)

Publication Number Publication Date
GB2122512A true GB2122512A (en) 1984-01-18

Family

ID=22161510

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08219439A Withdrawn GB2122512A (en) 1981-11-18 1981-11-18 Thermally isolated developer pump

Country Status (2)

Country Link
GB (1) GB2122512A (en)
WO (1) WO1983001842A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2366562A (en) * 1943-08-09 1945-01-02 Hoover Co Refrigeration
US3172364A (en) * 1962-10-01 1965-03-09 P G Products Mfg Co Inc Pump
US3420184A (en) * 1967-05-17 1969-01-07 Julius L Englesberg Pump employing magnetic drive
US3759220A (en) * 1970-11-04 1973-09-18 Canon Kk Cleaning device in electrophotography
US3779147A (en) * 1972-07-25 1973-12-18 Colorapid Ltd Apparatus for processing photographic material
JPS5826029B2 (en) * 1975-01-14 1983-05-31 株式会社リコー Denshiyashin Fukushiyakino Cleaning Souch
US4278345A (en) * 1979-09-17 1981-07-14 Nashua Corporation Drum cleaning apparatus

Also Published As

Publication number Publication date
WO1983001842A1 (en) 1983-05-26

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)