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2.3
Ink Saving/Toner Saving
This process is performed to save the amount of ink and toner that is con-
sumed during printing. On BJ printers, this is called the "ink saving" func-
tion, and on LBP, this is called the "toner saving" function. This function is
valid when it is set on user registration switches. This section describes an
example of the ink saving function.
• Ink saving function
The amount of ink consumed and the ink drying time are reduced by
appropriately converting areas of the image data containing lots of black
pixels to white. To be more precise, the focus is applied to a certain single
pixel, and the pixels to the left, right, top and bottom of that pixel are
investigated. If all of the pixels to the left, right, top and bottom of that
pixel are black, the focus pixel is converted to white. The following three
patterns are available according to the number of pixels to be targeted.
The following shows an instance where an black/solid image is converted
according to pattern 3.
Pattern 1
Fig. 4-10 Ink Saving (1)
Image is converted
Black/solid image
Fig. 4-11 Ink Saving (2)
RECORDING SECTION
Pattern 2
by pattern 3.
Image after conversion
1
2
3
4
5
: Focus pixel
: Black pixel
6
: White pixel
ït
çi
Pattern 3
4–11
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