Microtek ScanMaker i300 Specifications download pdf (Page 56)

DRAFT

NCE mode

QSS-30-3

1 dot

Light

amount

Perfect waveform

Laser beam

It is possible to control the output of laser and correct the color (Cyan, Yellow, etc.)

around the letter by inputting the correction value in the “NCE” mode.

(e.g.)

Outline characters on the black background

The part around black letter on the white background

However, the trend of color changes depending on various conditions (Font type, Font

size, condition of processing solution, etc.). So, even if you make a perfect correction

to a condition, the same quality cannot be gotten for the other conditions.

Description********************************

Light amount of laser is not constant in one dot, not like the ideal

waveform (illustration). The light amount is maximum at the center,

and it is getting smaller gradually as it is close toward the radial

rake.

Therefore, the low density part appears on the half-tone dot meshing

part (illustration), and this part may be colored Cyan, Yellow, etc.

depending on the chromogenic property of paper.

It is not noticeable in the consecutive color. But, it is noticeable in

the following scene.

The scene that the density difference appears clearly, especially

outline characters on the black ground, black letter around the white

background.

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Microtek ScanMaker i300 Specifications Page 56