Epson Grayscale Scanner Manual do Utilizador descarregar pdf (Página 9)

The Optimization Options dialog box for image settings controls how scanned images are filtered and

compressed for the PDF. Default settings are suitable for a wide range of document pages, but you may

want to customize settings for higher-quality images, smaller file sizes, or scanning issues.

Automatic

Applies default settings to balance file size and quality at a moderate level.

Aggressive

Applies settings that minimize file size. In some cases, selecting this option may visibly affect the

quality of the scanned PDF.

Custom Settings

Makes additional settings available under Compression and Filtering and disables the Aggressive

setting under Automatic. If you select Custom Settings, the Color/Grayscale or Monochrome

settings are available, depending on the option you selected in the Acrobat Scan dialog box.

Color/Grayscale settings

When scanning color or grayscale pages, select one of the following:

Lossless

Does not apply compression or filters—such as Deskew, Background Removal, and so forth—to

scanned pages.

Adaptive

Divides each page into black-and-white, grayscale, and color regions and chooses a

representation that preserves appearance while highly compressing each type of content. The

recommended scanning resolutions are 300 dots per inch (dpi) for grayscale and RGB input, or

600 dpi for black-and-white input.

JPEG

Applies JPEG compression to the entire grayscale or RGB input page.

Note: The scanner uses either the selected Color/Grayscale option or the selected Monochrome

option. Which one is used depends on the settings you select in the Acrobat Scan dialog box or in

the scanner’s TWAIN interface, which may open after you click Scan in the Acrobat Scan dialog

box. (By default, the scanner application dialog box does not open.)

Monochrome

When scanning black-and-white or monotone images, select one of the following:

JBIG2

Applies the JBIG2 compression method to black-and-white input pages. Settings of 0.95 or higher

use the lossless method; at lower settings, text is highly compressed. Text pages typically are

60% smaller than CCITT Group 4 compressed pages, but processing is slow. Compatible with

Acrobat 5.0 (PDF 1.4) and later.

Note: For compatibility with Acrobat 4.0, use a compression method other than JBIG2.

Adaptive

1 2 3 4 5 6 7 8 9 10

Sem comentários

Epson Grayscale Scanner Manual do Utilizador Página 9