Image Processing Commands

Image processing commands are used to modify scanned data before sending it to the computer. Two commands are available: halftone processing and color correction.

1. Set halftoning mode (ESC B)

Thiscom m and enablesordisableshalftone processing for bi-leveldata and quad-leveldata.Thetype ofprocessing perform ed isoutlined below .H ow ever,the type ofprocessing availablediffersby scannerm odel.See A ppendix B fordetails.

Thiscom m and also enablesordisablesTextEnhancem ent Technology.Thisfunction isonly availableforB5 orA 5 com m and levelscannersorhigher.

❏No data processing

Unprocessed data is sent directly to the computer. Use this setting when scanning characters or line art that needs no processing.

❏Halftoning mode A

Produces hard tones using the Error Diffusion method, producing images with higher contrast. This is appropriate for most images.

❏Halftoning mode B

Produces soft tones using the Error Diffusion method. This method produces a softer image than halftoning

mode A.

❏Halftoning mode C

Produces an image using a screen, again using the Error Diffusion method.

❏Dither mode A

Processes data using a 4×4 bayer pattern

Command Usage 2-13