HP Scitex LX850 HP Scitex LX850 & LX820 Printers: Maintenance and troubles - Page 60

There are wrinkles in the substrate

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Substrate issues 1. Check that the substrate type you have loaded corresponds to the substrate type selected in the front panel and in your software. 2. If you are using a paper-based substrate, try changing to a thicker substrate. There are wrinkles in the substrate Wrinkles in the substrate indicate that the substrate settings that control the substrate shape are not optimized. This can cause various printing defects. ● Colored bands in area fills in the vicinity of the wrinkles ● Ink smears if the printhead touches the substrate ● A substrate crash if the printhead's movement over the substrate is impeded There are various reasons why wrinkles could appear while printing: ● Incorrect loading of the substrate ● Incorrect routing of the substrate through the printer ● Incorrectly positioned edge holders ● Drying and curing temperatures too high for the substrate ● Differential expansion of the substrate due to variations in temperature, perhaps caused by a large difference between drying and curing temperatures ● Insufficient tension or non-uniform tension across the substrate If your prints suffer from wrinkles, here are some suggestions. 1. Check that the substrate you are using is the same type that you have selected in the HP Internal Print Server. 2. Try to minimize skew while loading the substrate. Double check that you are loading the substrate using the correct process. 54 Chapter 6 Troubleshoot substrate issues ENWW

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1.
Check that the substrate type you have loaded corresponds to the substrate type selected in the
front panel and in your software.
2.
If you are using a paper-based substrate, try changing to a thicker substrate.
There are wrinkles in the substrate
Wrinkles in the substrate indicate that the substrate settings that control the substrate shape are not
optimized. This can cause various printing defects.
●
Colored bands in area fills in the vicinity of the wrinkles
●
Ink smears if the printhead touches the substrate
●
A substrate crash if the printhead's movement over the substrate is impeded
There are various reasons why wrinkles could appear while printing:
●
Incorrect loading of the substrate
●
Incorrect routing of the substrate through the printer
●
Incorrectly positioned edge holders
●
Drying and curing temperatures too high for the substrate
●
Differential expansion of the substrate due to variations in temperature, perhaps caused by a large
difference between drying and curing temperatures
●
Insufficient tension or non-uniform tension across the substrate
If your prints suffer from wrinkles, here are some suggestions.
1.
Check that the substrate you are using is the same type that you have selected in the HP Internal
Print Server.
2.
Try to minimize skew while loading the substrate. Double check that you are loading the substrate
using the correct process.
54
Chapter 6
Troubleshoot substrate issues
ENWW
Substrate issues