Scanning resolution is measured in pixels per inch (ppi). Color, grayscale, and black and white define the number of colors possible. Adjust the scanner hardware resolution to up to 1200 ppi. The software can perform an enhanced resolution up to 19,200 ppi. Also, set color and grayscale at 1 bit (black and white), or at 8 bit (256 levels of gray) to 24 bit (true color).
The resolution and color guidelines table lists simple scanning tips.
NOTE Setting the resolution and color to a high value can create large files that take up disk space and slow the scanning process. Before setting the resolution and color, determine how the scanned image is being used.
Resolution and color guidelines
This table describes the recommended resolution and color settings for different types of scan jobs.
Intended use | Recommended resolution | Recommended color settings |
|
|
|
Display on screen | 75 ppi | ● Black and White for text |
|
| ● Grayscale for graphics and photos |
|
| ● Color, if the image is in color |
|
|
|
Print (graphics or text) | 600 ppi for complex graphics, or to | ● Black and White for text and line art |
| significantly enlarge the document | ● Grayscale for shaded or colored |
|
| |
| 300 ppi for normal graphics and text | graphics and photos |
| 150 ppi for photos | ● Color, if the image is in color |
|
|
|
Edit text | 300 ppi | ● Black and White |
|
|
|
150 ppi | ● Black and White, if the image does | |
|
| not require smooth gradation |
|
| ● Grayscale, if the image requires |
|
| smooth gradation |
|
| ● Color, if the image is in color |
|
|
|
Color
Set the color values using these settings when scanning.
Setting | Recommended use |
|
|
Color | Use this setting for |
| which the color is important. |
|
|
Black and White | Use this setting for text documents. |
|
|
Grayscale | Use this setting when file size is an issue or when a document |
| or photograph needs to be scanned quickly. |
|
|
86 Chapter 9 Scan | ENWW |
