FR889248A - Printer or photographic enlarger with a device for spectral variation of the printing light - Google Patents

Printer or photographic enlarger with a device for spectral variation of the printing light

Info

Publication number
FR889248A
FR889248A FR889248DA FR889248A FR 889248 A FR889248 A FR 889248A FR 889248D A FR889248D A FR 889248DA FR 889248 A FR889248 A FR 889248A
Authority
FR
France
Prior art keywords
printer
printing light
spectral variation
photographic enlarger
enlarger
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Application granted granted Critical
Publication of FR889248A publication Critical patent/FR889248A/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
    • G03B27/72—Controlling or varying light intensity, spectral composition, or exposure time in photographic printing apparatus
    • G03B27/73—Controlling exposure by variation of spectral composition, e.g. multicolor printers

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
FR889248D 1941-12-23 1942-12-17 Printer or photographic enlarger with a device for spectral variation of the printing light Expired FR889248A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE889248X 1941-12-23

Publications (1)

Publication Number Publication Date
FR889248A true FR889248A (en) 1944-01-04

Family

ID=6834455

Family Applications (1)

Application Number Title Priority Date Filing Date
FR889248D Expired FR889248A (en) 1941-12-23 1942-12-17 Printer or photographic enlarger with a device for spectral variation of the printing light

Country Status (1)

Country Link
FR (1) FR889248A (en)

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