Tensionless plate lock-up - Patent 0330736

(19)

(11)

EP 0 330 736 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	22.08.1990 Bulletin 1990/34

(43)	Date of publication A2:
	06.09.1989 Bulletin 1989/36

(21)	Application number: 88118939.3

(22)	Date of filing: 14.11.1988

(51)	International Patent Classification (IPC)⁴: B41F 27/12

(84)	Designated Contracting States:
	CH DE FR GB LI SE

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Priority:

29.02.1988 US 161640

(71)	Applicant: Rockwell International Corporation
	Pittsburgh Pennsylvania 15219 (US)

(72)	Inventor:
	Wallschlaeger, Alan Robert Sr. Elmhurst Illinois 60126 (US)

(74)	Representative: Leiser, Gottfried, Dipl.-Ing. et al
	Prinz & Partner, Manzingerweg 7 D-81241 München D-81241 München (DE)

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References cited: :

(54)	Tensionless plate lock-up

(57) A printing cylinder has a longitudinal slot (12) formed in the surface thereof to define an undercut locking surface against which both ends of a flexible printing plate (11) are clamped to hold the plate (11) securely against the surface of the cylinder. Locking means (25) excluding a curved outer surface for contacting the ends of the flexible plate (11) and clamping them against the undercut locking surface are provided. Spring biasing means (32) are disposed in operative compression between the locking means (25) and the bottom of the longitudinal slot (12) to urge the curved outer surface of said locking means (25) outwardly against the undercut locking surface.

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