HP Stitch S1000 User Guide - Page 232

General advice Your printer has been designed and qualified to the highest standards to provide the optimal compromise between print quality and productivity. Prints for outdoor use can accommodate more visible defects as they are viewed from a long distance. For shorter distances, as in indoor advertising, defects need to be less visible. In general, follow these recommendations: ● Avoid touching the substrate while printing is in progress. ● Judge the print quality after the print has been completely processed. In some cases, defects seen while printing disappear after the image is calendered. ● Check that the environmental conditions (room temperature and humidity) are in the recommended range. See Environmental specifications on page 248. Before troubleshooting, check the following points: ● To achieve the best performance from your printer, use only genuine HP supplies and accessories, whose reliability and performance have been thoroughly tested to give trouble-free performance and best-quality prints. ● Check that the substrate type selected in the Internal Print Server is the same as the substrate type loaded into the printer. CAUTION: If you have the wrong substrate type selected, you could experience poor print quality and incorrect colors, and perhaps even damage to the printheads. ● Check that you are printing on the right side of the substrate. ● Check that you are using in the RIP software the correct substrate preset, which includes the ICC profile for your substrate and print mode. ● Check whether there are any outstanding printer alerts in the Internal Print Server. React to the alert as instructed in this guide. In particular: ● Make sure the substrate is flat and has no wrinkles. See Troubleshoot substrate issues on page 217. ● Check that the substrate has no skew or telescoping. Check that you are loading the substrate using the correct process. See Load a roll into the printer on page 43. ● For color consistency issues, check that the color calibration was performed when the substrate was added to the Internal Print Server. See Use a new substrate on page 50. ● Make sure it has also been performed in the current conditions, especially considering substrate batch and printheads. See Color calibration on page 93. What can affect print quality Print mode The choice of the print mode defines the number of passes with which the job is printed and the quantity of ink that is used for printing. Thus, it can naturally affect overall print quality. For instance, reducing the number of passes reduces the time that the substrate spends in the print zone, so it decreases the drying time, which can cause various effects such as bleeding; and increasing the ink quantity can cause coalescence. Handling the print modes is explained in Create and manage print jobs on page 59. It is also possible to design customized print modes for cloned substrates, as explained in Handle the substrate on page 33. 226 Chapter 13 Troubleshoot print-quality issues ENWW