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You most likely have conflicting settings. With regard to the Photoshop settings (which are elaborated beyond all other programs, by and large) as opposed to the printer's driver settings... one may indicate one thing while the other indicates the other, producing a conflict.
Check your driver settings for your printer... in Windows, they are in
Control Panel - Devices and Printers
and right-click upon the icon for your printer, then choose
and in the Properties sheet for the printer, are the printer's "driver settings". Make sure that Portrait vs. Landscape is set there, to agree with whatever you have set it to in Photoshop.
(Portrait is the usual mode of printing e.g. a page of text. Landscape is the other way, like a landscape painting which is usually broader than it is tall.)
When you have made the printer's settings right in the Properties sheet, click on OK until the Properties sheet closes, in order to save the changed settings. Then double-check that they agree in Photoshop, and try again.
Have you selected Roll Paper in the driver settings, as well as in Photoshop's settings?
Photoshop's Print settings, specifically.
(What version of Photoshop are you printing from?)
File - Print
has settings in it, and also the
button has other settings.
Since it is a file from another source, don't take any setting for granted. It might have a specification of a different printer or type / model of printer associated with it. Go through all settings - and the top margin setting and the printer type or printer model setting shouldn't be neglected.
Well, so am I - it's puzzling.
Try saving the file, once you have loaded it into Photoshop, to another file (different name, and/or different type of file too, provided quality of image is not lost.)
Then try printing that.
It might. Possibly.