Capstan driven virtual internal drum imagesetter

Details Capstan driven virtual internal drum imagesetter Capstan driven virtual internal drum imagesetter

1996-04-30

1998-12-15

Wong, Peter S.

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

347264, 346136, B41J 247

Patent

active

058502483

ABSTRACT:
A virtual-drum capstan-driven device for outputting images from electronic files onto paper, film or plate material has increased output speed and reduced cost compared to an internal drum device. A capstan drive moves web type image recording media through a curved media platen having an upper curved surface and a lower curved surface which form the media into a virtual drum. The optical system has a rotating reflective spinner at the center of curvature of the virtual drum to scan modulated image date across media while being continuously driven. A tensioning mechanism maintains the media in a taught configuration and works in cooperation with the capstan drive to accurately control the motion of the media during imaging.

REFERENCES:
patent: 3874621 (1975-04-01), Blair et al.
patent: 4168506 (1979-09-01), Corsover
patent: 4595957 (1986-06-01), Holthusen
patent: 4686541 (1987-08-01), Rosier
patent: 5508730 (1996-04-01), Klein
patent: 5671005 (1997-09-01), McNay et al.

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