from memory ii thought it can handle op to 0,9 mm thickness, but not sure.
this is what i would do...
make a new paper inside the HP Utility
give it a useful informative name
set the printing properties
set the paper carriage position to HIGH.
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when loading the paper
load in a straight path above the spindle for rolls
choose a thinner paper and make it thicker (several sheets combined) in steps to see if the printer can handle your thick paper.
if not stop the printer immedialtely before dammage occurs
if yes use that paper you like