4

Mechanical and Electrical

 

A

 

 

 

 

 

 

 

Converts the output resolution

 

Resolution conversion

 

 

(from 400 dpi to 800, 600, 300 or 200 dpi).

 

 

 

 

 

 

 

 

 

 

 

Enlargement or reduction in the main scanning

 

Magnification Change

 

 

in main scanning

 

direction.

 

direction

 

 

 

 

 

 

Centers the image data by shifting it in the main

 

 

 

 

 

Centering in main

 

 

scanning direction

 

scanning direction.

 

 

 

Edge emphasis and smoothing are carried out.

 

 

 

 

 

MTF correction

 

 

 

 

• Edge Emphasis (Text Image)

 

 

 

 

 

 

 

 

The outlines of characters and fine lines are made

 

 

 

 

sharper as they appear on the copy by correcting the

 

 

 

 

MTF (modulation transfer function) characteristics

 

 

 

 

(resolution).

 

 

 

 

*MTF: Modulation Transfer Function

 

 

 

 

• Smoothing (Photo Image)

 

 

 

 

Image noise contained in the solid area of the image

 

 

 

 

is reduced to smooth the image, thereby improving

 

 

 

 

image quality of photos.

 

 

 

 

Contrast fine-adjustment

 

Linear γ

conversion

 

 

 

 

(γ : Density reproduction curve)

 

 

 

 

 

 

 

Enhances reproduction of characters and fine lines

 

Nonlinear conversion

 

 

that are low in contrast.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Conversion into binary

Converts 8-bit image data into binary image data by comparing to a certain threshold.

PWB-BB

 

B Binary Image

C Grayscale Image

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Image 57
Kodak 2400DSV service manual Mechanical and Electrical Converts the output resolution