Patent ID: 6636335
Filing Date: 2003-10-21
Classification: H04N

Abstract:
A wide image scanner, comprising:a housing having a paper feeding opening and a paper output opening; a first set of rollers disposed close to said paper feeding opening and cooperating to form a nip for an original to pass therebetween; a second set of rollers disposed close to said paper output opening and cooperating to form a nip for said original to pass therebetween; an image reading device for reading the image if said original; driving means for driving said image reading in horizontal direction, comprising: a sliding shaft, wherein said image reading device is mounted on said sliding shaft; a conveying element, wherein said image reading device is controllable by said conveying element to move reciprocally on said sliding shaft; and a motor; a paper edge sensor disposed at one side of said housing for detecting the end edge of said original and generating a vertical control signal in response to the presence of the end edge of said original; a plurality of paper width sensors fixed at the inner top of said housing and each located corresponding to a plurality of predetermined displacement positions for detecting the width of said original and generating a horizontal control signal in response to the presence of the side edge of said original; and control means for controlling the rotation directions of said first set of rollers and said second set of rollers in response to said vertical control signal, and for controlling said driving means and driving said motor to move said image reading device to one of said predetermined displacement positions in response to said horizontal control signal.