Xerox 721P88200 manual Pixel doubling, Mixed plex jobs, Maximizing throughput

IPS APPLICATION MIGRATION

Note: Note that support for printing these images was added to the

PSF/MVS environment by IBM’s PTF UW26975 (APAR

OW18369).

PSF may convert the image to IOCA at the IPDS level to cause resolution correction/scaling based on these factors:

•If the image resolution and printer resolution are not equal, PSF creates an IOCA image at the IPDS level that uses the scale-to- fit mapping to print the image. This method preserves the intended aspect ratio and dimension.

•If the image resolution is not a factor of the PGD units, PSF creates an IOCA image at the IPDS level that uses the position- and-trim mapping. This method accommodates for any rounding error.

For more information on adding color to page segments and IM images, refer to Chapter 5 “Incorporating Xerox value-added features”.

Pixel doubling

If you print applications that include images consisting of single-pel lines, the DocuPrint 4050 IPS or DocuPrint 4090 IPS printers automatically convert those single-pel lines to double-pel lines. This process, known as pixel doubling, accommodates the imaging technology of these printers and ensures optimum output quality of the document.

Mixed plex jobs

DocuPrint IPS 7.1 supports Mixed Plex jobs. That is, the IPS system controller can receive jobs from a host computer that contain simplex, duplex, or a mixture of both simplex and duplex pages within a job.

Mixed Plex enables the IPS system to switch plex modes (simplex to duplex and vice versa) within a job. In the AFP environment changing plex modes in the middle of a document is allowed and common.

Jobs that contain both simplex and duplex pages shall be printed without an IOT cycle-down. However, when switching from duplex to simplex within a job the printer may dead cycle to clear the paper path of all duplex sheets before feeding the first simplex sheet.

Users can avoid dead cycles when switching from duplex to simplex by performing “simulated simplex.” This is achieved by setting a Maximum Simplex value with the IPS GUI to maximize throughput.

Maximizing throughput

If you print applications that mix simplex and duplex pages (single and double-sided pages), you maximize throughput and minimize your per copy charges by configuring your system using the IPS graphical user interface.

4-12 DOCUPRINT IPS SOLUTIONS GUIDE