Dual resolution scanner

Details Dual resolution scanner Dual resolution scanner

1998-06-24

2000-03-21

Brase, Sandra

Electrophotography

Control of electrophotography process

Control of exposure

399177, 399203, 399208, G03G 15043, G03G 1504

Patent

active

060411988

ABSTRACT:
The focused light incident from the light source on the document to be scanned has two different lengths of light path. The shorter light path is incident on the document near the light source. The longer light path is incident on the document away from the light source with a larger light spot and scans the document at a higher speed to yield a lower resolution. The high resolution light ray reflected from the document and the low resolution light ray reflected from the document pass through a set of transmitting lenses tilted at different angles to irradiate two different sets of charge coupled device sensors.

REFERENCES:
patent: 5055880 (1991-10-01), Fujiwara
patent: 5140443 (1992-08-01), Iwahara et al.
patent: 5339139 (1994-08-01), Fullerton et al.
patent: 5589972 (1996-12-01), Tellam et al.
patent: 5839036 (1998-11-01), Shogren

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