Driving apparatus for optical systems of photocopier
AssigneeMita Industrial Co., Ltd.
InventorsEiji Tsutsui, Arihiro Tsunoda
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Abstract
The present invention relates to a driving apparatus for the optical systems of a photocopier comprising 1st and 2nd optical systems, 1st and 2nd wires stretched out facing with each other through the wire-fixed ends of the 1st optical system, moving pulleys of the 2nd optical system, fixed pulleys of both systems and a common wire drum for both wires. The common wire drum has two wire drum bodies with a shallow and smooth dented portion, and a screw for pressing and fixing the approximate center of the wires against the bottom surface and/or side surface of the dented portion.
Claims12
A driving apparatus for optical systems of a photocopier comprising 1st and 2nd optical systems for exposure of an image to an image receiving body installed in a photocopier housing and moving in a single direction at a speed ratio of 2:1 between both of the 1st and 2nd optical systems for scanning, an end for fixing a wire at each of both sides of the 1st optical system, a pair of moving pulleys mounted on both sides of the 2nd optical system, a plurality of fixed pulleys mounted each on both sides of a scanning plane for both the 1st and 2nd optical systems, a 1st wire and a 2nd wire stretched facing each other through the moving pulleys and fixed pulleys, a common wire drum over which both the 1st wire and the 2nd wire are wound and a driving means for the common wire drum, wherein
- the common wire drum has two wire drum bodies which are of substantially cylindrical shape and are mounted on both sides of a common drum shaft and wind the 1st wire and the 2nd wire thereover, each of the wire drum bodies being provided with a shallow and smooth dented portion, and a means for adjustably pressing fixedly each of the wires at an approximate center of the wire against the bottom surface and/or side surface of the dented portion.
A driving apparatus for the optical system of a photocopier having first and second optical systems for exposure of an image to an image receiving body installed in a photocopier housing and moving in a single direction at a speed ratio of 2:1 between both of the first and second optical systems for scanning, an end for fixing a wire at each of both sides of the first optical system, a pair of moving pulleys mounted on both sides of the second optical system, a plurality of fixed pulleys mounted each on both sides of a scanning plane for both the first and second optical systems, a first wire and a second wire stretched facing each other through the moving pulleys and fixed pulleys, a common wire drum over which both the first wire and the second wire are wound, and a driving means for the common wire drum, wherein the common wire drum comprises two wire drum bodies which are of substantially cylindrical shape and are mounted on both sides of a common drum shaft and wind the first wire and the second wire thereover, each of the wire drum bodies having (a) a shallow and smooth dented portion, the dented portion having bottom and side surfaces, and (b) means for holding a section of the respective wire against the bottom surface and/or side surface of the dented portion, the shallow and smooth dented portion being provided by a cutaway toward the outside of the respective wire drum body and wherein the means for holding each of the wires comprises (i) a horizontal portion which can be slidably carried on the bottom surface of the dented portion of the wire drum body and form a drum surface for winding the respective wire in combination with the wire drum body, (ii) a hanging down portion extending downward which is integral with an outside of the horizontal portion, and (iii) means for securing the hanging down portion to the outside end of the wire drum body, whereby the wire can be adjustably tightly fixed with the inner end of the horizontal portion to at least a side surface of the dented portion.
Dependencies are inferred from the claim text.