Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1996-11-27
1998-03-24
Phan, James
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
271226, G02B 2608
Patent
active
057318883
ABSTRACT:
An apparatus for performing exposure by scanning with optical beams, in which exposing light sources issuing the optical beams to be deflected in a main scanning direction are used to scan and expose a web of light-sensitive material as it is transported in an auxiliary scanning direction substantially perpendicular to the main scanning direction. The apparatus has a transport guide that is positioned at least in a neighborhood of an area upstream in the auxiliary scanning direction of an exposing position where the light-sensitive material is scanned and exposed. The transport guide includes a pair of U-shaped members for regulating both end portions of the light-sensitive material in a direction of width, each of the members having at least two rollers juxtaposed in the auxiliary scanning direction in a side that faces each lateral end portion of the light-sensitive material in the direction of width. The transport guide is capable of reducing the resistance of the light-sensitive material against transport by a sufficient amount to prevent the occurrence of uneven exposure and the development of abrasion marks.
REFERENCES:
patent: 5095370 (1992-03-01), Takada et al.
Fuji Photo Film Co. , Ltd.
Phan James
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