HP 2100 TN - Manual (Page 51)

EN Chapter 2 Printing Tasks 39
Printing on Custom-Sized Media or Cardstock
Postcards, 3 by 5 in. (index) cards, and other custom-sized media can
be printed from Tray 1. The minimum media size is 76 by 127 mm
(3 by 5 in.) and the maximum media size is 216 by 356 mm (8.5 by
14 in.).
Note You may experience some paper jams when using any media with a
length less 178 mm (7 in.). This may be caused by paper that has been
effected by environmental conditions. For optimum performance, make
sure you are storing and handling the paper correctly. Please refer to
“Printing and Paper Storage Environment” on page 144. Using media
from another manufacturer may also help.
Custom-Sized Media and Cardstock Guidelines:
Always insert the short-edge first into Tray 1. If you want to print in
landscape mode, make this selection through your software.
Inserting paper long-edge first may cause a paper jam.
Use the rear output tray to reduce curl.
Do not print on media smaller than 76 mm wide (3 in.) or 127 mm
(5 in.) long.
Set margins at least 6.4 mm (.25 in.) away from the edges of the
media in the software application.
See Appendix B starting on page 139 for media specifications.