GB1122629A - Illumination control system - Google Patents

Illumination control system

Info

Publication number
GB1122629A
GB1122629A GB43035/65A GB4303565A GB1122629A GB 1122629 A GB1122629 A GB 1122629A GB 43035/65 A GB43035/65 A GB 43035/65A GB 4303565 A GB4303565 A GB 4303565A GB 1122629 A GB1122629 A GB 1122629A
Authority
GB
United Kingdom
Prior art keywords
lamps
contacts
motor
blower
energized
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
GB43035/65A
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.)
Xerox Ltd
Original Assignee
Rank Xerox Ltd
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 US403889A external-priority patent/US3330180A/en
Application filed by Rank Xerox Ltd filed Critical Rank Xerox Ltd
Publication of GB1122629A publication Critical patent/GB1122629A/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
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/04036—Details of illuminating systems, e.g. lamps, reflectors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/54—Lamp housings; Illuminating means
    • G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting
    • 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
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/28—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning
    • G03G15/30—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning in which projection is formed on a drum
    • 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
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/043—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

1,122,629. Control of two motors. RANK XEROX Ltd. 11 Oct., 1965 [14 Oct., 1964], No. 43035/65. Heading H2J. [Also in Divisions G2 and H1] In an apparatus for illuminating a document during scanning, particularly scanning a document in a xerographic apparatus (see Division G2-3) motors 82, 88 are included in a control circuit, Fig. 2, which includes a heat responsive element, e.g. a thermistor R T in contact with an area of one of the lamps (LMP), Fig. 3 (not shown). Motor (82) ,drives a blower (81) which supplies cooling air to the lamps. Motor 88, Fig. 2, driving blower 87 is energized through contacts 1CR-1 of a relay ICR energized under the control of thermistor R 1 to supply cooling air to the lamp LMP in operation. When the lamps are cool, heater element 85 associated with blower 81, Fig. 3 (not shown) is energized through contacts 1CR-2 to supply hot air to the lamps before scanning commences. During operation, with switch SW open, element 85 is deenergized, the energization of motor 88 being controlled by contacts 1CR-1 to supply cooling to maintain the lamps at a desired temperature appropriate to their maximum light output.
GB43035/65A 1964-10-14 1965-10-11 Illumination control system Expired GB1122629A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US1264239XA 1964-10-14 1964-10-14
US403889A US3330180A (en) 1964-10-14 1964-10-14 Illumination control system

Publications (1)

Publication Number Publication Date
GB1122629A true GB1122629A (en) 1968-08-07

Family

ID=26824634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43035/65A Expired GB1122629A (en) 1964-10-14 1965-10-11 Illumination control system

Country Status (2)

Country Link
DE (1) DE1264239B (en)
GB (1) GB1122629A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7607680A (en) * 1976-07-12 1978-01-16 Oce Van Der Grinten Nv DEVICE FOR CONTROLLING THE LIGHT EMISSION OF A GAS DISCHARGE LAMP.
JPS59178444A (en) * 1983-03-30 1984-10-09 Ricoh Co Ltd Illuminating device
DE3623372A1 (en) * 1986-07-11 1988-01-21 Hoelter Heinz Apparatus and method for the automatic coupling of the air amount and temperature in ultraviolet/ozone generators
DE3734767A1 (en) * 1987-10-14 1989-04-27 Du Pont Deutschland METHOD FOR OPERATING AN EXPOSURE DEVICE AND EXPOSURE DEVICE FOR CARRYING OUT THIS METHOD
AU4550197A (en) * 1996-10-08 1998-05-05 Purup Eskofot A/S A circuit for maintaining the temperature of a light source, and use of the circuit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE951190C (en) * 1953-11-06 1956-10-25 Johann Huegin Method and apparatus for eliminating the color cast when producing color copies
DE1820140U (en) * 1960-01-16 1960-10-20 Agfa Ag PROJECTION HEAD FOR ENLARGEMENT DEVICES.

Also Published As

Publication number Publication date
DE1264239B (en) 1968-03-21

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