HP Laserjet 1200 - Manual (Page 242)

240 Appendix D Media specifications EN
Note Do not use letterhead that is printed with low-temperature inks, such
as those used in some types of thermography.
Do not use raised letterhead.
The printer uses heat and pressure to fuse toner to the paper. Make
sure that any colored paper or preprinted forms use inks that are
compatible with the printer temperature (200° C or 392° F for 0.1
second).
Problems with feeding. Ragged edges. Use good quality paper.
Paper usage (continued)
Symptom Problem with paper Solution