Laser print apparatus that generates pulse width value and justification value based on pixels in a multi-bit image
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United States of America Patent
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Oct 27, 2009
Grant Date -
Feb 7, 2008
app pub date -
Oct 8, 2007
filing date -
Feb 12, 2003
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Abstract
A laser print apparatus includes a memory for storing a multi-bit image including a plurality of pixels. Each pixel is represented by an N-bit value, wherein N is greater than one. A modulation code generator analyzes three adjacent pixels. The three adjacent pixels include a left pixel, a center pixel, and a right pixel. The modulation code generator is configured to generate a pulse width value based on the value of the center pixel, and a justification value based on the values of the left pixel and the right pixel. A laser print engine forms an output pixel on media based on the pulse width value and the justification value.
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