Optical scanning method and system capable of performing high speed scanning and high resolution, and image forming apparatus having the optical scanning system
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United States of America Patent
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Aug 8, 2006
Grant Date -
Jan 1, 2004
app pub date -
Mar 25, 2003
filing date -
Mar 25, 2002
priority date (Note) -
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Abstract
An optical scanning apparatus including a light source, a first optical mechanism, a light deflective reflection mechanism, a scanning optical mechanism, a second optical mechanism, and an aperture element. The light source emits a plurality of laser beams. The first optical mechanism includes an optical element fixed to an integrated member that fixes the light source, and converts the laser beams into converging laser beams. The light deflective reflection mechanism reflects and deflects the laser beams. The scanning optical mechanism leads the laser beams to an image recording surface. The second optical mechanism is arranged between the first optical mechanism and the light deflective reflection mechanism and has a negative power in at least a main scanning direction. The aperture element is arranged between the light source and the light deflective reflection mechanism. An optical scanning method and an image forming apparatus having the optical scanning apparatus are also described.
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