Appeal No. 97-3467
Application 08/279,748
The Rejections on Appeal
Claims 1-4 and 6-12 stand finally rejected under 35
U.S.C. § 103 as being unpatentable over Morimoto and Takemoto.
Claim 1 is the only independent claim.
The Invention
The invention is directed to a laser drawing apparatus
wherein the height of the drawing beams on the drawing surface
is subject to a limitation to avoid distortion. Claim 1, the
sole independent claim, is reproduced below:
1. A laser drawing apparatus comprising:
a splitting means comprising a beam splitter
which separates laser light emitted from a laser
source into two drawing beams, the beams being
aligned in a common plane and a beam separator
which separates each of the two drawing beams
into at least two bundles of drawing beams;
a deflecting mirror having a reflecting surface
which reflects and deflects the aligned drawing
beams to scan a drawing surface therewith in a
main scanning direction; and,
a scanning optical system which converges the
beams reflected by the reflecting surface of the
deflecting mirror onto the drawing surface,
wherein the height of the drawing beams on the
drawing surface in said main scanning direction
from the optical axis of said scanning optical
system is limited to be in proportion to a
deflection angle 2;
3
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