Epson SureColor S50675 High Production Edition User Manual - Page 220

Prints Are Not What You Expected Print quality is poor, uneven, too light, or too dark, has obvious graininess, or a different tone. o Are the print head nozzles clogged? If the nozzles are clogged, specific nozzles do not fire ink and the print quality declines. Try printing a test pattern. See "Checking for Clogged Nozzles" on page 181. o Perform Head Alignment Given that there is a slight gap between the print head and the media, the landing sites for the different colors of ink may be affected by humidity, temperature, inertial forces imparted by the print head, the direction of the print head as it moves from right to left or left to right, or the use of two print heads (all models except S30675). As a result, the printing result may show obvious graininess or out-of-focus characteristics. Select Media Adjust - Head Alignment in the media settings to adjust a print head misalignment that occurs during printing. See "Head Alignment" on page 119. o Perform Feed Adjustment Large discrepancies in the feed amount cause banding (horizontal banding, tint unevenness, or stripes). Select Media Adjust - Feed Adjustment in the media settings to make adjustment based on the target media. See "Feed Adjustment" on page 117. o Are you using a genuine Epson ink cartridge? This printer is developed for use with Epson ink cartridges. If you use non-Epson ink cartridges, printouts may be faint, or the color of the printed image may be changed because the remaining ink level is not correctly detected. Be sure to use the correct ink cartridge. o Are you using an old ink cartridge? The print quality declines when an old ink cartridge is used. Replace the old ink cartridge with a new one. Use all the ink in the cartridge before the date printed on the package or within six months of opening, whichever is sooner. o Are the heaters at the correct temperature? Raise the temperature if the print results are blurred or smudged or the ink clots. Note, however, that raising the temperature too high can cause the media to shrink, wrinkle, or deteriorate. In addition, the heaters may require some time to reach the desired temperature if the ambient temperature is low. The heaters may also not have the desired effect after reaching the selected temperature if the media is too cold. Allow the media to warm to room temperature before use. o Are media settings correct? Confirm that the media settings in the software RIP or on the printer match the media actually in use. o Is Data Width selected for Head Movement? Selecting Data Width for Head Movement in the setup menu increases print speed but may slightly reduce print quality. For better quality results, select Printer Full Width for Head Movement. See "The Printer Setup Menu" on page 208. Problem Solver 220