Ricoh Aficio MP C3001 Service Manual page 1202

System SP4-xxx
[Text/Photo Detection Level Adj.]
4994
Selects the definition level between Text and Photo for high compression PDF.
PDF Sensitivity Level
001
text/photo
[White Paper Detect Level]
4996
Selects the threshold level of the original background density. Increasing this
threshold level machine easily judge that an original is white.
001 -
D086/D087
[0 to 2 / 1 / 1 /step]
0: Text priority
*ENG
1: Normal
2: Photo priority
[0 to 6 / 3 / 1 /step]
*ENG 0: lightest
6: Darkest
3-222 SM Appendix