Specifying the IMAGEOUT parameter
ACIF converts IM1 format images in the input file, in overlays, and in page segments to uncompressed IOCA format, if IMAGEOUT=IOCA (the default) is specified. An uncompressed IOCA image can use a higher number of bytes than an IM1 image and can take more processing time to convert, especially for shaded or patterned areas.
Although IOCA is the MO:DCA-P standard for image data, and some data stream receivers might require it, all products cannot accept IOCA data. Even though all software products from Ricoh do accept IOCA data and IM1 image data, Ricoh suggests that you specify IMAGEOUT=ASIS, which produces all image data in the same format as in the input file, unless you have a specific requirement for IOCA images.