Image scanning apparatus with light source condition testing

Details Image scanning apparatus with light source condition testing Image scanning apparatus with light source condition testing

1998-03-24

1999-11-02

Braun, Fred L

Electrophotography

Diagnostics

Image forming component

399 51, 399203, 399220, G03G 1504, G03G 2100

Patent

active

059786140

ABSTRACT:
An image scanner arrangement having a scanner, a document feeder scanning portion and a flat scanning bed. A single white plate is provided between the document feeder scanning portion and flat bed. Before scanning, the scanner scans the white plate to provide image data for testing. If this image data contains white pixels not less than 90%, a controller determines that a lamp of a light source of the scanner illuminates appropriately. After confirming that the light source is in a good condition, the scanning starts. The single white plate is utilized regardless of scanning being performed with the document feeder scanning portion or the flat scanning bed.

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patent: 4737819 (1988-04-01), Taniguchi
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patent: 5365349 (1994-11-01), Knodt et al.
patent: 5732308 (1998-03-01), Miura

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