Patent ID: 6116590
Filing Date: 2000-09-12
Classification: B65H

Abstract:
A paper size discriminating apparatus for determining a size of paper loaded in an image recording apparatus, comprising:a pair of members relatively displaced in a direction of a width of said paper, the relative displacement corresponding to said width of said paper, wherein a first of said pair of members has a groove including a plurality of stepped portions progressively increasing in dimension in the direction transverse to the relative displacement,detecting means provided to a second of said pair of members for detecting a position at each of said stepped portions of said groove;a member which is displaced in the longitudinal direction in accordance with a dimension in the longitudinal direction of said paper corresponding to a length of said loaded paper;displacing means for detecting displacement of said member in said longitudinal direction of said paper and determining a size of said paper in said longitudinal direction; anddiscriminating means for discriminating a size of said paper based upon data provided by said pair of members and said displacing means.