Epson Expression 636 User Manual - TWAIN 32 - Page 101

Color Correction, Expression 636 Scanner Settings, CRT Display B, Printer Output

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t CRT Display B This setting is suited for analog-input CRT displays which can display an image with multiple levels of tones of more than 1 bit/pixel/color (γ = 1.8). This is usually the best setting. t Printer Output A This setting is suitable for high-density printers, such as 24-dot printers and some page printers. The image is converted into a lighter image to compensate for the higher (darker) density of such printers. The image looks faint when viewed on a CRT display. t Printer Output B This setting is suitable for low-density printers, such as 8-dot (9-pin) printers, and page printers. The image is converted into a slightly darker image to compensate for the lower (lighter) density of such printers. The image looks faint when viewed on a CRT display. t Printer Output C This setting is suitable for high contrast printing of images which contain both picture and text. This setting gives higher contrast and more definition than either Printer Output A or B. The dark and light parts of images are accentuated by this method. Color Correction Color correction is functional only with color line sequence mode, because the color of a pixel is immediately determined when the pixel is scanned. Color correction provides four settings. To disable this function, simply choose color page sequence reading or monochrome reading. Expression 636 Scanner Settings B-11

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Expression 636 Scanner Settings
B-11
CRT Display B
This setting is suited for analog-input CRT displays which
can display an image with multiple levels of tones of more
than 1 bit/pixel/color (
γ
= 1.8). This is usually the best
setting.
Printer Output A
This setting is suitable for high-density printers, such as
24-dot printers and some page printers. The image is
converted into a lighter image to compensate for the higher
(darker) density of such printers. The image looks faint
when viewed on a CRT display.
Printer Output B
This setting is suitable for low-density printers, such as 8-dot
(9-pin) printers, and page printers. The image is converted
into a slightly darker image to compensate for the lower
(lighter) density of such printers. The image looks faint when
viewed on a CRT display.
Printer Output C
This setting is suitable for high contrast printing of images
which contain both picture and text. This setting gives
higher contrast and more definition than either Printer
Output A or B. The dark and light parts of images are
accentuated by this method.
Color Correction
Color correction is functional only with color line sequence
mode, because the color of a pixel is immediately determined
when the pixel is scanned. Color correction provides four
settings. To disable this function, simply choose color page
sequence reading or monochrome reading.