mirror of
https://git.familie-radermacher.ch/linux/ptouch-print.git
synced 2026-08-01 12:17:26 +00:00
Tobias KlausmannandDominic Radermacher
921206cd5f
On the PT-P900W the print area is not centered on the 560-pin printhead: its center sits at pin 272 rather than the head center (pin 280), a fixed 8-pin offset that is constant across all tape widths. Centering the raster data on the head therefore prints ~0.5mm off-center (measured as a constant ~1mm margin delta across 12/18/36mm tapes, confirmed against the spec). Add a pin_offset field to _pt_dev_info (0 = centered, the default for all existing printers) and apply it in print_img. Set it to -8 for the PT-P900Wc, which reproduces the spec left-margin exactly for every tape width ((560-print_area)/2 - 8 = documented left margin). Reference: Brother "Software Developer's Manual - Raster Command Reference, PT-P900/P900W/P950NW", section 2.3.5 "Raster line" (per-tape left/right margin and print-area pin counts for the 560-pin head). https://download.brother.com/welcome/docp100407/cv_ptp900_eng_raster_102.pdf
About: ptouch-print is a command line tool to print labels on Brother P-Touch printers on Linux. There is no need to install the printer via CUPS, the printer is accessed directly via libusb. The tool was written for and tested with the PT-2430PC, but meanwhile is also used with others (see "ptouch-print --list-supported") Maybe others work too (please report USB VID and PID so I can include support for further models, too). Further info can be found at: https://dominic.familie-radermacher.ch/projekte/ptouch-print/ Compile instructions: ./compile.sh Note: Dear visitor, currently I have absolutely no time for improvements on this project (my free time currently is about one or two hours PER MONTH). Therefore, I can not look at suggestions about improvements.