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Canon MultiPASS C5000 Service Manual Page 204

Canon multipass c5000 inkjet printer.
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dpi Printing/Smoothing Feature
2.6 720
2.6.1 Canon extension mode
In
the Canon extension mode, the printer driver creates 720 dpi data for the horizontal axis
and sends it to the printer, resulting in high-quality printing.
With a black BJ cartridge installed, the printer driver smooth& the printed character's
edges at 720 dpi along the horizontal'axis. The 720 dpi data for the horizontal axis is sent
to the printer and the edges are smoothed at a high resolution.
When a color BJ cartridge is installed, the multi-value data of the picture elements
processed by the printer driver for color correction, etc., is assigned three values (no
printing, single-dot printing, two-dot printing) for the picture elements. In the case of two-
dot printing, the second dot is printed in the 720 dpi position. As a result, the degree of
gradation is high in the printing.
Emulation mode
2.6.2
When a black BJ cartridge is installed for printing, the printed character's edges can be
smoothed at a high resolution of 720 dpi along the horizontal axis. Dots along the
character's edges are added or deleted for smoothing the edge. Along the horizontal axis,
dots are also overlapped by a half-dot space. This eliminates jaggies and increases the
equivalent horizontal resolution at twice.
This smoothing feature greatly improves low-resolution, 180 dpi characters. However, it
does not give noticeable improvement to True Type fonts and illustrations.
Note that with a color BJ cartridge installed, the emulation mode's smoothing feature
cannot be used.
Figure 2-5 720 dpi Printing/Smoothing Feature
Chapter 2: Technical Reference
2-7
Add D o
, Delete Dot

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