FR2396988A1 - Dispositif d'exposition a la lumiere - Google Patents

Dispositif d'exposition a la lumiere

Info

Publication number
FR2396988A1
FR2396988A1 FR7820018A FR7820018A FR2396988A1 FR 2396988 A1 FR2396988 A1 FR 2396988A1 FR 7820018 A FR7820018 A FR 7820018A FR 7820018 A FR7820018 A FR 7820018A FR 2396988 A1 FR2396988 A1 FR 2396988A1
Authority
FR
France
Prior art keywords
light
region
photocopiers
portable
housing
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
FR7820018A
Other languages
English (en)
Other versions
FR2396988B3 (fr
Inventor
Robert E Levin
George J English
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.)
GTE Sylvania Inc
Original Assignee
GTE Sylvania Inc
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 GTE Sylvania Inc filed Critical GTE Sylvania Inc
Publication of FR2396988A1 publication Critical patent/FR2396988A1/fr
Application granted granted Critical
Publication of FR2396988B3 publication Critical patent/FR2396988B3/fr
Granted legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
  • Projection-Type Copiers In General (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

L'invention concerne un dispositif d'exposition à la lumière notamment mis en oeuvre dans les photocopieurs portatifs de type reflex. Selon l'invention, le dispositif comprend un boîtier dont l'une des bases est ouverte, comportant une région absorbant la lumière et une région la diffusant. La source de lumière est disposée dans la région diffusant la lumière de telle façon que seule une partie uniforme de la lumière traverse, avec un angle d'incidence donné, la base ouverte du boîtier où peut être disposée une feuille de papier photosensible par-dessus un original à copier. Les parois latérales du boîtier sont de préférence constituées par des éléments s'emboîtant de façon télescopique de manière à fermer le dispositif après usage. Application : photocopieurs portatifs de type reflex.
FR7820018A 1977-07-05 1978-07-05 Dispositif d'exposition a la lumiere Granted FR2396988A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/812,833 US4128333A (en) 1977-07-05 1977-07-05 Light exposure device including light diffusing and absorbing regions therein

Publications (2)

Publication Number Publication Date
FR2396988A1 true FR2396988A1 (fr) 1979-02-02
FR2396988B3 FR2396988B3 (fr) 1981-03-06

Family

ID=25210751

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7820018A Granted FR2396988A1 (fr) 1977-07-05 1978-07-05 Dispositif d'exposition a la lumiere

Country Status (9)

Country Link
US (1) US4128333A (fr)
JP (1) JPS5445131A (fr)
BE (1) BE868698A (fr)
CA (1) CA1111814A (fr)
DE (1) DE2828746A1 (fr)
FR (1) FR2396988A1 (fr)
GB (1) GB1596886A (fr)
IT (1) IT1095947B (fr)
NL (1) NL7805853A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4308573A (en) * 1978-06-12 1981-12-29 Esquire, Inc. Lamp fixture including diffused low angle reflective surfaces
US4515468A (en) * 1983-03-25 1985-05-07 Phase One Products, Corp. Combined photographic enlarger and print developing tray
US7950833B1 (en) 2008-06-17 2011-05-31 Genlyte Thomas Group Llc Splay frame luminaire

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4318545Y1 (fr) * 1964-11-21 1968-07-31
US3697177A (en) * 1970-06-26 1972-10-10 Addressograph Multigraph Illuminating system for a copying machine

Also Published As

Publication number Publication date
JPS5445131A (en) 1979-04-10
IT1095947B (it) 1985-08-17
US4128333A (en) 1978-12-05
GB1596886A (en) 1981-09-03
BE868698A (fr) 1978-11-03
NL7805853A (nl) 1979-01-09
DE2828746A1 (de) 1979-01-25
CA1111814A (fr) 1981-11-03
IT7824990A0 (it) 1978-06-27
FR2396988B3 (fr) 1981-03-06

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Legal Events

Date Code Title Description
CD Change of name or company name
ST Notification of lapse