HP Latex 2700 User Guide 3 - Page 279

NOTE: In the above example, the distance between the drops is about 1 cm (0.4 in). 1. If you are using the substrate edge holders, clean them. 2. Clean the sides of the printheads and the sides of the printhead slots. 3. Clean the electrical connections to the printheads. See Internal Print Server recommends replacing or reseating a printhead on page 292. 4. Clean the under-carriage protector. 5. Clean the aerosol extractor. Print is shorter than expected Some substrates naturally contract when they are printed on and cured, so that the total length of the print is shorter than expected. In this case, you can expand the length of the print from the RIP, which will compensate for the contraction of the substrate. Alternatively, change to a less thermal-dependent substrate to reduce the contraction. How to achieve better consistency between jobs of the same length The printer has been designed to maximize consistency in the length of the printed substrate. However, there are external variables that can contribute to variability: substrate variations and enviromental conditions. 1. Select a substrate which is less susceptible to expansion when being printed on. Most paper-based substrates have a tendency to expand. ● If you need to print on a substrate susceptible to expansion: - Ensure that the density of ink is similar between each tile (if not, the tile with less ink might be shorter). - If possible, decrease the heating temperature. 272 Chapter 13 Troubleshoot substrate issues