Service manual

In this example, the UCR ratio is 70%.
For a Black Image
When a black image is copied, the ID values for all colors are equal (figure
1). For each color, the ID value is reduced by the UCR ratio (70% in the
example). A black ID value equal to the 70% reduction is added to
compensate for the color ID reduction (figure 2).
For a Color Image
When a color image is copied, the color ID values are different from one
another (figure 3). It is treated in two steps.
1. The ID value for this image is broken down into two parts (figure 4): a set
of values equal to the lowest color ID value, and the remainders of the
two higher values.
2. The part with the equal values is treated as a black image (see figures 1
and 2), using the 70% UCR ratio. The resulting amounts are then added
to the remainders from step 1 (figure 5). The final result gives us the ID
value for each color and for black (figure 6).
Fig. 1
Fig. 6Fig. 5
Fig. 4
Fig. 3
Fig. 2
Detailed
Section
Descriptions
IMAGE PROCESSING
SM 2-55 A166/A187/A189
CÓPIA NÃO CONTROLADA
CÓPIA NÃO CONTROLADA