Image Functions

3.3.4Zooming

[A.4.7 SET WINDOW command/X,Y resolution]

Zooming is the function to enlarge or reduce the image from 400 dpi. X and Y independent variable resolutions are supported. This zooming is processed in grayscale, so smooth and non-distorted images can be obtained even when halftone is applied.

NOTICE: Resolution is converted by an electrical method. Therefore , no matter how high resolution is specified, small texts or narrow lines will not be resolved more clearly than 400 dpi image does.

NOTICE: Zooming rate of back side reading must be same as front side.

Zooming (800 dpi at 200%)

3.3.5Dither download

[A.4.10 SEND command/SEND data]

User’s own dither pattern is downloaded with this function. Four built-in dither patterns are available basically and 8 more dither patterns can be downloaded.

3.3.6Gamma download

[A.4.10 SEND command/SEND data]

Gamma downloading is supported to scan with user’s own gamma correction pattern. Two built-in gamma patterns, Ordinary and High contrast, are basically available. And five more gamma patterns can be downloaded.

NOTICE: When the downloaded gamma pattern is specified for grayscale reading, the last two bit of the pixel output data is always B’00’.

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