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Part 4: Technical Reference
BJC-2000
2. FIRMWARE
2.1 720 dpi Printing Feature
2.1.1 Canon extended mode
In Canon extended mode, the printer driver creates 720 dpi data for the horizontal
direction and sends it to the printer, allowing the printer to achieve high-quality
printing.
With a black BJ cartridge installed, the printer driver smoothes the printed
character's edges to 720 dpi along the horizontal direction. The 720 dpi data for the
horizontal direction is sent to the printer and the edges are smoothed at a higher
resolution.
When a color BJ cartridge is installed, a 360 dpi data is represented by a set of two
dots printed simultaneously to obtain a 720 dpi resolution. The multi-value data of
the pixels processed by the printer driver for color correction, etc., is assigned three
values (no printing, single-dot printing, two-dot printing) for each pixel. In the case of
two-dot printing, the second dot is printed in the 720 dpi position. As a result, this
method enables the printer to achieve high degree gradation printing.
BJ
1/720 inch
Add Dots
Delete Dot
1/360 inch
1/360 inch
Figure 4-5 720 dpi Printing Feature
4-5
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