Advancing material of indeterminate length – By orbitally traveling material-engaging surface – Comprising rotary pinch pair
Patent
1996-11-27
1998-02-03
Mansen, Michael
Advancing material of indeterminate length
By orbitally traveling material-engaging surface
Comprising rotary pinch pair
226187, B65H 2000
Patent
active
057135045
ABSTRACT:
Improved transport apparatus for auxiliary scanning, which is to be used with an image recording system in which exposing light sources issuing optical beams to be deflected in the main scanning direction are used to scan and expose a web of light-sensitive material has an exposure drum that transports the web of light-sensitive material in a auxiliary scanning direction which is substantially perpendicular to the main scanning direction as it is held in a predetermined exposing position, as well as a first and a second nip roller that are spaced apart in the auxiliary scanning direction, with the exposing position lying in between, and which urge the web of light-sensitive material against the exposure drum, the first nip roller being located upstream the auxiliary scanning direction and provided with a uniform predetermined nip pressure at both end portions, and the second nip roller being located downstream the auxiliary scanning direction and provided at opposite end portions with nip pressures within a predetermined range that will create a predetermined differential nip pressure between the opposite end portions. The apparatus realizes consistent transport of the light-sensitive material to enable the recording of high-quality images free from instrumental variability.
REFERENCES:
patent: 1981411 (1934-11-01), Fritz
patent: 3107036 (1963-10-01), Richards et al.
patent: 5617986 (1997-04-01), Kawamura
Arai Haruhiko
Seto Noboru
Fuji Photo Film Co. , Ltd.
Mansen Michael
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