FR1097439A - Improvements to machines for reproducing plans - Google Patents

Improvements to machines for reproducing plans

Info

Publication number
FR1097439A
FR1097439A FR1097439DA FR1097439A FR 1097439 A FR1097439 A FR 1097439A FR 1097439D A FR1097439D A FR 1097439DA FR 1097439 A FR1097439 A FR 1097439A
Authority
FR
France
Prior art keywords
plans
reproducing
machines
reproducing plans
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
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.)
VERRERIE SCIENT
Original Assignee
VERRERIE SCIENT
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 VERRERIE SCIENT filed Critical VERRERIE SCIENT
Application granted granted Critical
Publication of FR1097439A publication Critical patent/FR1097439A/en
Expired 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
    • G03B27/542—Lamp housings; Illuminating means for copying cameras, reflex exposure lighting

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR1097439D 1954-03-29 1954-03-29 Improvements to machines for reproducing plans Expired FR1097439A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1097439T 1954-03-29

Publications (1)

Publication Number Publication Date
FR1097439A true FR1097439A (en) 1955-07-05

Family

ID=9618601

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1097439D Expired FR1097439A (en) 1954-03-29 1954-03-29 Improvements to machines for reproducing plans

Country Status (1)

Country Link
FR (1) FR1097439A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443020A1 (en) * 1978-11-28 1980-06-27 Cit Alcatel Uniformly illuminating linear light source - has diaphragm or reflector shaped to compensate end effects of fluorescent tube
EP0022175A1 (en) * 1979-06-21 1981-01-14 International Business Machines Corporation Electrophotographic copier with variable original document to image size ratio

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2443020A1 (en) * 1978-11-28 1980-06-27 Cit Alcatel Uniformly illuminating linear light source - has diaphragm or reflector shaped to compensate end effects of fluorescent tube
EP0022175A1 (en) * 1979-06-21 1981-01-14 International Business Machines Corporation Electrophotographic copier with variable original document to image size ratio

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