HP Latex 3000 Users Guide - Page 367
Printing issues, A spindle latch suddenly opens during printer operation
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1. Check that the substrate type you have loaded corresponds to the substrate type selected in the Internal Print Server and in your software. 2. If you are using a paper-based substrate, try changing to a thicker substrate, or reduce the amount of ink. Printing issues A spindle latch suddenly opens during printer operation If a spindle latch is not closed before starting the substrate load, or it is opened by someone after the spindle was already moving or while the substrate was under tension, the spindle can move out of place. Closing the latch in those conditions can cause an incomplete latch engagement, and then at some point the latch may spontaneously open completely. The best solution is to eliminate substrate tension, avoid spindle movement, and then close the latch properly. To do this, return to the substrate load/unload menu, ensure that the spindle is properly in place (in case of doubt, extract it a bit and then push it back fully inside again), then close the latch (the blue part should now go down completely). The substrate advances with a loud continuous sound of vibration A loud continuous sound of vibration during the substrate advance can be caused in the following ways: ● The input spindle is not applying tension. ● Wrong tension or vacuum settings result in an incorrect balance of forces on the main roller. If you hear this sound, here are some suggestions: 1. Check that the substrate you are using is the same as the one you have selected in the Internal Print Server. 2. Check that you are using the generic substrate presets for the category. The use of incorrect values may result in incorrect substrate behavior. NOTE: Only substrates with high friction along the platen or substrates that easily wrinkle with temperature need high output tension values. Check that your output tension is recommended for your substrate. 3. Check that there is no telescoping of the input roll. 4. If you are using the roll-to-roll configuration with dual-roll spindles and you see smears, or the substrate is not adhering to the platen, mainly at the outer sides of both rolls, you are recommended to use the center support with both spindles. Once installed, you can try to move it up slightly from its calibrated position if you are suffering from wrinkles or the substrate is not adhering to the platen at the outer edges. This could mean that the support has been calibrated below the correct position. ENWW Printing issues 361