Xerox Nuvera Digital Production System Paper Manual

Contents

Xe rox Nu ve ra Pa pe r Guid e3-1 0Ti ps by s to c k t y pePreprinted paperNOTE: When printing over offset inks, image permanence may becompromised.Table 3-16. Preprinted paperDescription Any previously printed paper that will be printed on again. Examples ofpreprinted papers are forms, mailers and catalogs that will be personalizedwith customer names and addresses.Selection tips • Select papers printed with laser-compatible, lithographic inks tominimize offsetting. UV-cured inks are recommended, especially oncoated stocks, to insure complete drying before printing on a XeroxNuvera. Laser inks can be oxidative, or heat set types.• Do not use papers preprinted with xerographic processes.• Design the preprinted image so that no ink, varnish, or aqueous coatingis placed in the area to be printed on by a Xerox Nuvera. Toneradhesion can not be assured when printing over inks or varnish. If theXerox Nuvera image must be printed over pre-printed ink, results aremore likely to be acceptable if the color is screened back to less than30% or the base stock is uncoated paper.• Select preprinted sheets that are free of excessive curl.• Select uncoated and coated papers that are laser compatible or thatappear in the Media Compatibility Guide.• Select preprinted materials that are able to withstand:– Fuser temperatures of up to 437F (225 C) at 100 pounds per squareinch for 29 milliseconds.– Exposure to fuser fluid.• Avoid cold set inks to prevent excessive offsetting.• Avoid conductive inks containing carbon blacks or metal powders.– Sheets will not hold sufficient electrical charge for proper dry inktransfer.– Paper handling problems may occur with conductive inks.• Test a small quantity of a preprinted paper before ordering a largequantity. However, if the guidelines provided here are not followed,results may be inconsistent.CAUTION: Never print on sheets that were printed with rubber-based inksor cured with a drying agent (starch, talc, or rosin powders). Machinecontamination will result, causing background spotting, streaking, depositsin the fuser and/or spots on the photoreceptor.CAUTION: If you wish to use a preprinted paper that has not been testedby Xerox, check with your Xerox representative first. Some preprintedpapers can cause production system damage.Storage tips Protect preprinted sheets from moisture to prevent image quality defectsand feeding problems.