The Emacs commands for making hardcopy let you print either an entire buffer or just part of one, either with or without page headers. See also the hardcopy commands of Dired (see Misc File Ops) and the diary (see Diary Commands).
print-buffer but print only the current region. lpr-buffer but print only the current region.
The hardcopy commands (aside from the Postscript commands) pass extra switches to the lpr program based on the value of the variable lpr-switches . Its value should be a list of strings, each string an option starting with `-'. For example, to use a printer named `nearme', set lpr-switches like this:
(setq lpr-switches '("-Pnearme"))
The variable lpr-header-switches similarly specifies the extra switches to use to make page headers.