Carriage positioning structure for a scanner

Details Carriage positioning structure for a scanner Carriage positioning structure for a scanner

1998-07-13

1999-02-23

Grimley, Arthur T.

Electrophotography

Image formation

Exposure

355 57, 358474, 399206, 399213, G03B 2734, G03G 1504, G03G 1528, H04N 104

Patent

active

058753761

ABSTRACT:
A carriage positioning structure includes a carriage pivoted to a longitudinal guide rod and reciprocated along a longitudinal sliding rail inside a scanner between a bottom shell and a flat glass plate, an image pick-up mechanism carried on the carriage and moved with the carriage to pick up the image of an object placed on the flat glass plate, a bottom guide wheel mounted on the carriage at the bottom and supported on the longitudinal sliding rail to guide reciprocating movement of the carriage along the longitudinal sliding rail, and a top guide wheel mounted on the carriage at the top and spaced below the flat glass plate by a gap, the top guide wheel being forced into contact with the flat glass plate by the gravity weight of the carriage when the scanner is turned upside down, permitting the carriage to be reciprocated on the flat glass plate along the longitudinal guide rod so that the image pick-up mechanism can pick up the image of a 3-D document placed below the scanner.

REFERENCES:
patent: 4264198 (1981-04-01), Miyamoto

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