Incremental printing of symbolic information – Light or beam marking apparatus or processes – Scan of light
Patent
1997-05-30
2000-07-25
Le, N.
Incremental printing of symbolic information
Light or beam marking apparatus or processes
Scan of light
347241, 359834, 359205, B41J 2435
Patent
active
06094210&
ABSTRACT:
A focusing apparatus (10) for maintaining a first beam in focus at an imaging plane comprising a first reflective surface (14) which redirects the first beam from a first direction to a second direction wherein the second direction is oriented approximately 90.degree. from the first direction; a second reflective surface (24) which redirects the first beam from the second direction to a third direction wherein the third direction is oriented approximately 90.degree. from the second direction; a third reflective surface (26) which redirects the first beam from the third direction to a fourth direction wherein the fourth direction is oriented approximately 90.degree. from the third direction; a fourth reflective surface (32) which redirects the first beam from the fourth direction to a in a fifth direction wherein the fifth direction is oriented approximately 90.degree. from the fourth direction; and wherein the second reflective surface (24) and the third reflective surface (26) are movable as a unit, with respect to the first reflective surface (14) and the fourth reflective surface (32). In one embodiment, second reflective surface (24) and third reflective surface (26) are incorporated in a roof prism (20).
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patent: 5191485 (1993-03-01), Kahle
patent: 5248992 (1993-09-01), Ferschl
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Cobb Joshua M.
Kessler David
Blish Nelson Adrian
Eastman Kodak Company
Le N.
Pham Hai C.
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