GB370112A - Improvements in printing devices for sound films - Google Patents

Improvements in printing devices for sound films

Info

Publication number
GB370112A
GB370112A GB4733/31A GB473331A GB370112A GB 370112 A GB370112 A GB 370112A GB 4733/31 A GB4733/31 A GB 4733/31A GB 473331 A GB473331 A GB 473331A GB 370112 A GB370112 A GB 370112A
Authority
GB
United Kingdom
Prior art keywords
printing
films
channel
sound
drum
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
GB4733/31A
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.)
ANDRE LEON VICTOR CLEMENT DEBR
Original Assignee
ANDRE LEON VICTOR CLEMENT DEBR
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 ANDRE LEON VICTOR CLEMENT DEBR filed Critical ANDRE LEON VICTOR CLEMENT DEBR
Publication of GB370112A publication Critical patent/GB370112A/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
    • G03B27/02—Exposure apparatus for contact printing
    • G03B27/10—Copying apparatus with a relative movement between the original and the light source during exposure

Abstract

370,112. Photo graphic printing apparatus. DEBRIE, A. L. V. C., 111, Rue St. Maur, Paris. Feb. 14, 1931, No. 4733. Convention date, April 5, 1930. [Class 98 (ii).] Relates to apparatus for photographically printing a sound-record on a combined sound and picture film. According to the invention, in order to prevent relative slipping of the films during the printing of the sound record, this printing is effected by passing the negative film and the positive print film together, with uniform movement, over a guiding channel curved to an arc of small radius, in which channel the soundrecord printing aperture is provided ; the films are in contact with the curved channel over a substantial arc, and the driving device, which preferably engages the films at one edge only, is arranged beyond the guiding channel. In the apparatus shown, the said channel is formed by providing a fixed rib 6<1> and a movable rib 6<11> on a plate 6 which partially surrounds a cylinder 3. A lamp 4 is contained in the cylinder, and a printing aperture 5 is formed as shown. The negative film 8 and the positive film 7 are drawn together through the channel by a driving drum 11, having a single row of teeth engaging the perforations along one edge of the films, the films being pressed down over the printing aperture by a pivoted shutter 9, and held down against the driving drum by a pivoted shoe 13 and a roller 17, mounted on a lever which is pivoted at 16. The motion of the drum 11 is controlled by a spring-pressed flywheel 22 mounted on the shaft 10 carrying the drum. The sound-record printing apparatus shown is mounted beneath the usual pictureprinting apparatus. The Specification as open to inspection under Sect. 91 (3) (a) also describes an arrangement for using separate synchronous motors for driving the films past the picture and soundrecord printing devices respectively. This subject-matter does not appear in the Specification as accepted, but forms the subject-matter of Specification 370,354.
GB4733/31A 1930-04-05 1931-02-14 Improvements in printing devices for sound films Expired GB370112A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR370112X 1930-04-05

Publications (1)

Publication Number Publication Date
GB370112A true GB370112A (en) 1932-04-07

Family

ID=8894588

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4733/31A Expired GB370112A (en) 1930-04-05 1931-02-14 Improvements in printing devices for sound films

Country Status (1)

Country Link
GB (1) GB370112A (en)

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