04038663 is referenced by 31 patents and cites 6 patents.

A method and apparatus for writing video information with a laser on a recording surface employing a protective foil on the writing surface through which foil the laser write beam is focussed. A stream of filtered gas is passed between the foil and the writing surface to remove any gaseous or particulate by-products of the writing process, and to protect the writing surface from room contaminance.

Title
Method of writing information with a modulated radiation beam onto an information storage medium and information storage medium particularly adapted to the method
Application Number
5/615881
Publication Number
4038663
Application Date
September 23, 1975
Publication Date
July 26, 1977
Inventor
George Churchill Kenney
Stamford
CT, US
Paul Edwin Day
Eindhoven
NL
Agent
Simon L Cohen
Frank R Trifari
Assignee
North American Philips Corporation
NY, US
U S Philips Corporation
NY, US
IPC
G01D 15/32
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