[comp.text.tex] Ricoh 4150 mode_def query

casterln@are.berkeley.edu (Gary Casterline) (11/17/90)

We just got a QMS PS-1500 PostScript printer which has a
Ricoh 4150 engine.  At first we used the pk300 Canon-based fonts.
Installing the write-white pk fonts (which I believe use the
RicohFortyEighty mode_def below) improved the print quality
considerably.

But can we do better?  The thinner strokes break up slightly and give a
general feeling of hesitancy (say).  Has anyone tinkered with the
4080 mode_def and come up with anything worth calling a 4150 mode_def?
Would anyone care to share their experiences with blacker, fillin and
o_correction?  The last two I note are in double danger bends so I
thought I'd ask for advice.

						Thanks,
							Gary
For your viewing pleasure:

% Ricoh 4080: for the TI Omnilaser (Stan Osborne's values TUGboat 8,2,134)
mode_def RicohFortyEighty =
    let font_setup = white_setup;	% use the write-white font_setup
    proofing := 0;		% no, we're not making proofs
    fontmaking := 1;		% yes, we are making a font
    tracingtitles := 0;		% no, don't show titles at all
    pixels_per_inch := 300;	% Ricoh write-white engine.
    blacker := 0.2;		% Don't overblack the small fonts
    fillin := -0.2;		% reverse comp. for diagonal fillin
    o_correction := 0.5;	% but don't overshoot as much
enddef;

% for the QMS (Xerox engine)
mode_def qms =
    proofing := 0;		% no, we're not making proofs
    fontmaking := 1;		% yes, we are making a font
    tracingtitles := 0;		% no, don't show titles in the log
    pixels_per_inch := 300;
    blacker := 0.3;		% (this value not yet tested)
    fillin := 0.2;		% (ditto)
    o_correction := 0.5;	% (ditto)
enddef;

--
Gary Casterline             .  ._ ._   Agricultural & Resource Economics
casterln@are.berkeley.edu  /-\ |< |-_  207 Giannini Hall
(415) 642-5583                         UC Berkeley, CA 94703