Image scanner pulley system for maintaining a constant distance

Electrophotography – Image formation – Exposure

Patent

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Details

358474, G03G 1504, H04N 104

Patent

active

060759607

ABSTRACT:
An image scanner of the type projecting the image of a document on a one-dimensional image sensor while maintaining the length of an optical path between the image sensor and a document scanning position constant is disclosed. A stop member is fitted on one end of a wire and affixed to a rail. The wire is turned back via a driven pulley rotatably mounted on a half-speed carriage and then affixed to a full-speed carriage at a preselected point of the wire. Subsequently, the wire is again turned back by a driven pulley, and then turned back via a driven pulley rotatably mounted on the half-speed carriage. A stop member is fitted on the other end of the wire and temporarily affixed to the rail.

REFERENCES:
patent: 4870448 (1989-09-01), Miyake et al.
patent: 5119136 (1992-06-01), Morikawa
patent: 5237366 (1993-08-01), Oka et al.
patent: 5721628 (1998-02-01), Takaragi et al.

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