Ricoh B246 SERIES, Manual, Page: 130 / 268

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Image Quality
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SP 4903 001 to 024
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These SPs affect items such as MTF and smoothing
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Photo mode has two sets of image quality custom
settings
Service manual, section 6.6.4, Image Quality
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There are no complex MTF or smoothing SP adjustments. Just adjust these SPs,
as described in the tables on the above pages.
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Note that there are two sets of custom settings for photo mode. These are
‘dithering’ and ‘error diffusion’. The set of custom settings that will be used depends
on the setting of SP 4904 002.
¾
The dither matrix size setting affects the quality of photo images. If the
customer complains about the quality of photo images, experiment with this
SP until you get the best results.
Service manual, pages 6-40 and 6-41
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Just to give you an idea of what the SP settings do, the manual includes some
tables relating the SP settings with the various original type settings.
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For example, in text mode, if you want the ‘custom setting’ to have an effect
halfway between the ‘Soft’ sub original type and ‘Normal’, set the SP mode to 3.
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Note that there are different SPs for different ranges of reproduction ratio.