HP Latex 260 Maintenance and troubleshooting guide - Page 67

Image quality maintenance, Enable extra PH cleaning

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select the icon, then Image quality maintenance > Enable extra PH cleaning. Remember to disable this option when you no longer need it, because it shortens the life of the printhead cleaning kit. ● Color variation tile to tile In some cases contiguous tiles with the same background solid color may show differences in color between the right side of the first tile and the left side of the second tile. This is a common issue of inkjet printers (both thermal inkjet and piezo inkjet), where there are slight color variations as the swath advances. Since the biggest color differences are between the left edge and the right edge, the effect may sometimes be seen when putting two tiles together. This issue can easily be overcome by inverting alternate tiles, which has the effect of placing the right side of the first plot next to the right side of the second plot and the left side of the second plot next to the left side of the third, so all contiguous areas have been printed in the same point of the swath and, hence, have the same color. This is a feature that all RIPs have available. ● Dimensional variations from tile to tile Some specific banner substrates may not have uniform dimensional stability when printing very long tiles. The result is that the length of the tile may be different between the left and the right side (e.g. a 9 meters long tile may be ~1 cm longer on the right side compared to the left side). While this is not noticeable with individual plots, it affects the alignment between panels in tiling applications. Substrate types that show this behavior tend to show it constantly along the roll. So, when present, this issue can easily be overcome by inverting alternative tiles, which has the effect of placing the right side of the first plot next to the right side of the second plot and the left side of the second plot next to the left side of the third, so all contiguous areas belong to the same side of the roll and, hence, have the same length. This is a feature that all RIPs have available. ENWW Tiling issues 61

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select the
icon, then
Image quality maintenance
>
Enable extra PH cleaning
. Remember to disable
this option when you no longer need it, because it shortens the life of the printhead cleaning kit.
●
Color variation tile to tile
In some cases contiguous tiles with the same background solid color may show differences in color
between the right side of the first tile and the left side of the second tile. This is a common issue of
inkjet printers (both thermal inkjet and piezo inkjet), where there are slight color variations as the swath
advances. Since the biggest color differences are between the left edge and the right edge, the effect
may sometimes be seen when putting two tiles together. This issue can easily be overcome by inverting
alternate tiles, which has the effect of placing the right side of the first plot next to the right side of the
second plot and the left side of the second plot next to the left side of the third, so all contiguous areas
have been printed in the same point of the swath and, hence, have the same color. This is a feature that
all RIPs have available.
●
Dimensional variations from tile to tile
Some specific banner substrates may not have uniform dimensional stability when printing very long
tiles. The result is that the length of the tile may be different between the left and the right side (e.g. a 9
meters long tile may be ~1 cm longer on the right side compared to the left side). While this is not
noticeable with individual plots, it affects the alignment between panels in tiling applications. Substrate
types that show this behavior tend to show it constantly along the roll. So, when present, this issue can
easily be overcome by inverting alternative tiles, which has the effect of placing the right side of the
first plot next to the right side of the second plot and the left side of the second plot next to the left side
of the third, so all contiguous areas belong to the same side of the roll and, hence, have the same
length. This is a feature that all RIPs have available.
ENWW
Tiling issues
61