Erase background – Ricoh IS450 User Manual

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Functions

Erase Background

This function permits selection of the white side dynamic range for scanning.

When Erase Background is disabled

The dynamic range is set so that a white original (D value: 0.07) reaches maximum output.

When Erase Background is enabled

During scanning, the portion of the original that is closest to white is deemed to be white, and
the dynamic range is set so that the portion in question reaches maximum output.