Raster Image Printer can create images and files that can be used by fax software or a hardware fax board on your computer. Not all of the supported file types that Raster Image Printer can create are natively faxable. If you need to create a file that can be faxed, the best output format is TIFF, followed closely by PDF. All of the supported file types can, however, create files that restricted to fax paper size and fax resolutions.

See the following sections for step-by-step guides to creating fax format images and files.

Creating Monochrome Fax

Creating Color Fax

Changing the Fax Compression

Fax Compression

When creating Profile F format TIFF or PDF files the compression method used will depend on the setting for Monochrome Images: on the Compression tab. If the current compression mode setting does not match one of the supported compression methods for that fax profile, the default compression method for that fax profile is used instead.

Profile

Allowed

Default

Profile F

CCITT Group 4 Fax

CCITT Group 3 2D Fax

CCITT Group 3 1D Fax

CCITT Group 4 Fax

Profile S

CCITT Group 3 1D Fax

CCITT Group 3 1D Fax

Profile C

JPEG

JPEG

Viewing Fax Images

Most image viewers will be able to display Profile F and Profile S fax images correctly. Profile C fax images are viewable but may display the image with a blue or green color tint. This is normal as most image viewers do not understand the ITU L*a*b color model required by the FAX standard. A Profile C fax will appear correct when printed by a fax machine that supports color fax images.

A non-faxable color TIFF image stores the image information using the YCbCr color model while a faxable TIFF image (Profile C) stores the image information using the ITU L*a*b color model. Most image viewers today display TIFF images as if they were created using the YCbCr color model. Trying to display a color fax image using the YCbCr color model is what causes the images to have the blue or green color tint.

 

The type of faxable image you will need to create will depend on the requirements of your faxing software or hardware; TIFF images are among the most commonly used formats. Check the documentation that came with your faxing software or hardware to see its specifications.