Radiant energy – Photocells; circuits and apparatus – Photocell controlled circuit
Reexamination Certificate
2002-01-25
2003-11-18
Gutierrez, Diego (Department: 2859)
Radiant energy
Photocells; circuits and apparatus
Photocell controlled circuit
C250S234000, C358S474000
Reexamination Certificate
active
06649897
ABSTRACT:
BACKGROUND OF THE INVENTION
A. Field of the Invention
The present invention is directed to a flat bed scanner having the ability to scan both reflectively and transmissively, through use of a series of mirrors, including a switch mirror that defaults, by operation of gravity, into the transmissive mode position.
B. Description of the Prior Art
Transmissive/reflective scanners are known, for example the transmissive/reflective scanner of U.S. Pat. No. 5,705,805 provides for a series of mirrors, including a switch mirror by which the scanner mode of operation may be changed from reflective to transmissive and vice versa. In the scanner of the '805 patent the switch mirror is operated from transmissive to reflective position, and vice versa, through solenoid switches operated through movement of the carriage by stepper motors.
OBJECTS AND SUMMARY OF THE INVENTION
It is an object of the invention to provide a transmissive/reflective optical scanner that has few moving parts, is simpler and more reliably converted from reflective to transmissive and vice versa modes of operation than the prior art transmissive/reflective flat bed scanners.
With reference to the above-described object, the present invention provides a transmissive/reflective flat bed scanner by which the optical switch mirror has a gravity assist default position which orients the scanner for transmissive scanning, and a second position that requires rotating the switch mirror into a position whereby reflective optical scanning may take place.
REFERENCES:
patent: 4023887 (1977-05-01), Speers
patent: 4821730 (1989-04-01), Wurster et al.
patent: 5574274 (1996-11-01), Rubley et al.
patent: 5705805 (1998-01-01), Han
patent: 5814809 (1998-09-01), Han
Chen Wen Shu (Bonny)
Han Loi
Coudert Brothers LLP
Courson Tania C.
Gutierrez Diego
Hokanson, Esq. Jon E.
Microtek International Inc.
LandOfFree
Transmissive/reflective scanner does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Transmissive/reflective scanner, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Transmissive/reflective scanner will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3168768