Table of Contents
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Dithering
This is only used in photo mode.
Each pixel is compared with a pixel in a dither matrix. Several matrixes are
available, to increase or decrease the detail on the copy.
1. Grayscale processing mode
The matrix type can be selected with SP4-904-2.
2. Binary picture processing
The matrix type can be selected with SP4-904-18.
Line width correction
This function is effective only in copied original mode.
Usually, lines will bulge in the main scan direction as a result of the
negative/positive development system that is used in this model. So, pixels on
edges between black and white areas are compared with adjacent pixels, and if the
pixel is on a line, the line thickness will be reduced.
The line width correction is done in the IPU chip.
The line width correction type can be selected with SP4-904-6.
A230/A231/A232
2-17
IMAGE PROCESSING
SM
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Table of Contents
Troubleshooting
