Roller with contoured surface for conveying ultrathin webs and apparatus comprising such a roller

(19)

(11)

EP 0 705 786 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	20.11.1996 Bulletin 1996/47

(43)	Date of publication A2:
	10.04.1996 Bulletin 1996/15

(21)	Application number: 95115687.6

(22)	Date of filing: 05.10.1995

(51)	International Patent Classification (IPC)⁶: B65H 27/00

(84)	Designated Contracting States:
	DE FR GB IT

(30)

Priority:

07.10.1994 US 320076

(71)	Applicant: EASTMAN KODAK COMPANY
	Rochester, New York 14650 (US)

(72)	Inventors:
	Stewart, Arthur Moore, c/o Eastman Kodak Company Rochester, New York 14650-2201 (US) Cole, Kevin A., c/o Eastman Kodak Company Rochester, New York 14650-2201 (US)

(74)	Representative: Pohle, Reinhard, Dipl.-Phys. et al
	c/o Kodak Aktiengesellschaft, Patent Department D-70323 Stuttgart D-70323 Stuttgart (DE)

(54)	Roller with contoured surface for conveying ultrathin webs and apparatus comprising such a roller

(57) A web conveying roller (18) is provided with circumferentially or spirally extending grooves (42) and lands (44), the lands having convex curvatures (46, 48; 54) to cause a conveyed, ultrathin web (30), at the beginning of a wrap angle (α) onto the roller, to undulate along the width of the roller over the lands and into the grooves while remaining spaced from the convex curvatures of the lands; so that, air entrained between the web and the lands can flow into the grooves.

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