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
GB17246/30A
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 AGfiledCriticalIG Farbenindustrie AG
Publication of GB347044ApublicationCriticalpatent/GB347044A/en
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
Landscapes
Silver Salt Photography Or Processing Solution Therefor
(AREA)
Thermal Transfer Or Thermal Recording In General
(AREA)
Abstract
347,044. Combined sound and picture films. I. G. FARBENINDUSTRIE AKT.- GES., Frankfort-on-Main, Germany. June 4, 1930, No. 17246. Convention date, June 4, 1929. [Class 40 (ii).] A lenticular picture film prepared as described in Specification 10611/09, [Class 98 (ii), Photographic processes &c.], is adapted to receive a sound record by omitting the lenticular impressions at the part to receive the sound record, or by removing such impressions at this part as by pressure with a heated roller or the like during the production of the picture film or as a separate operation.
GB17246/30A1929-06-041930-06-04An improvement in producing sound records on lenticular picture films
ExpiredGB347044A
(en)