Xerox 12 manual Xerox testing has shown the following

USAGE GUIDELINES FOR XEROX COLOR COPIERS AND PRINTERS

Hints, tips and testing results

Xerox testing has shown the following:

•Coated papers are very susceptible to humidity. Image mottle (light patches in solid areas) or light images overall will occur if paper is not kept packaged in environments with more than 40% humidity. To avoid this, keep packages sealed, use sheets from the center of the ream, or store unused paper in a resealable bag. Multifeeds are also much more likely with humidity greater than 40%.

•Two sided copying (duplexing) of coated papers may not be recommended for your copier/printer. The most common problems are: (1) light image patches (mottle) and deletions on side two, especially in large halftone areas; (2) image offsetting. Image offsetting can be caused on side two by dry ink contamination of rollers in the fusing system when the sheet is run through again for the side two image, or on side one by paper-to-paper contamination in the output tray.This is most likely to occur with high density images and will usually appear within the first 10 copies.

Offsetting will become worse as more copies are run and can lead to permanent damage to the fuser and pressure rolls requiring a service call. The extent of this problem can be highly variable and is dependent on the type of image being run and the condition and age of the machine.

COLOR MATERIALS USAGE GUIDE Visit our website at www.xerox.com 37