There are at least two parameters that need to be changed (Lines per page and character size) to achieve the page layout that you want. Optionally you may need to set top and bottom margins. To do this in LaserJet emulation you need to pass certain escape sequences to the printer to change these parameters.
If you do not have access to a text/binary editor such as EDT, request your MIS department to send the following information to the printer.
Commands
--------
Page length:
ESC&1#P # = NUMBER OF LINES PER PAGE
ESC&1#E # = NUMBER OF LINES AT TOP MARGIN
ESC&1#F # = NUMBER OF LINES AT BOTTOM MARGIN
Font Selection:
ESC(s7C 7 point charcter size
ESC(s8C 8 point charcter size
ESC(s8.5C 8.5 point charcter size
ESC(s10C 10 point charcter size
ESC(s12C 12 point charcter size
ESC(s14.4C 14.4 point charcter size
Support Information Services