PROTECTING PHOTOGRAPHIC IMAGES AGAINST MICROSPOT ATTACK - Patent 0025441

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EP 0 025 441 A1

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(43)	Date of publication:
	25.03.1981 Bulletin 1981/12

(21)	Application number: 80900467.0

(22)	Date of filing: 14.03.1980

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International Patent Classification (IPC):

G03C 1/ 06^{( . )}
G03C 11/ 06^{( . )}

G03C 5/ 26^{( . )}

(86)	International application number:
	PCT/GB1980/000045

(87)	International publication number:
	WO 1980/001962 (18.09.1980 Gazette 1980/21)

(84)	Designated Contracting States:
	CH DE FR GB

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Priority:

14.03.1979 GB 19790008972

(71)	Applicants:
	EASTMAN KODAK COMPANY (a New Jersey corporation) Rochester, New York 14650 (US) KODAK LIMITED Hemel Hempstead Herts, HP1 1JU (GB)

(72)	Inventors:
	KING, Roy Harrow, Middlesex HA1 4TY (GB) BLY, Philip J. Leighton Buzzard Bedfordshire (GB)

(74)	Representative: Pepper, John Herbert, et al
	KODAK LIMITED Patent Department P.O. Box 114 190 High Holborn London WC1V 7EA London WC1V 7EA (GB)

(54)	PROTECTING PHOTOGRAPHIC IMAGES AGAINST MICROSPOT ATTACK