Printing images

Most printers, such as the InfoPrint 70, InfoPrint 2000, and InfoPrint 4100, support image resources. To determine whether your printer supports image resources, see the documentation provided with the printer.

Ordinarily, image resources print only on printers that support IOCA images. With PSF, however, you can print some image resources even on a printer that supports only IM image data objects. For more information about IM images, see Printing images without IOCA. These restrictions apply:

• The resolution of the image resource must be the same as that of the printer.
• The image resource must be stored in uncompressed format.
• The image resource must contain only one segment.
• The image resource must specify one of these mapping options (these mapping options do not require scaling or correction of resolution):
  • Image point to pel
  • Image point to pel with double-dot
  • Scale-to-fit, with the input image space the same as that of the output space

When printed on a printer that supports image resources, an image can be resolution-independent. That is, every such printer prints the image at the same size, even if the resolution of the image is different from the resolution of the printer. Because of differences in the scaling algorithms used by various printers, however, exact fidelity of the image is not guaranteed. To be resolution-independent, you must specify a parameter that tells the printer to correct the resolution. To learn about the mapping options a printer has that can correct the resolution, see the documentation provided with the printer.