Laser Printer Applications Manual

Here’showto assignIDnumbersto aninternalor cartridgefont.Youfirst

selectthefont,thensendtheFontIDcommandtogiveitanIDnumber,and

finallycopythefontintomemorywithFontControlfunction6.If youwant

that copy to stay in RAM when you reset the printer, you concludeby

sendingFontControlfunction5.

Example: Controlling fonts

Let’ssee howthoselast few commandswork,translatedinto BASIC.

Pretendyouwanttomakeashorttestwithyourcurnmtfont(itdoesn’tmatter

whatit is): you wantto printwhat’sin ASCIItablepositions128through

130.There’snothingtherein yournormalRoman-8symbolset, but some

othersetskeepcontrolcodesor internationalcharactersthere.

Assumingyoulike whatyouseeprintedfromthoseASCIIpositions,you

then wantto makethat currentfontpermanent.Finally,you also want to

dumpallthetemporaryfontsfromprintermemorytomakeroomfor some

graphicsyou’llbe printing.

Let’sstart with a resetandan underlinedheadingfor yourtestprint:

100 LPRINTCHR$(27) ; “E”;

110 LPRINTCHR$(27) ; “&dOD”;

120 LPRINT “Underlined heading for test print

of ASCII 128 - 130” ;

130 LPRINTCHR$(27) ; “&d@”

140 LPRINTCHR$(27) ; “&p3X”;

150 LPRINTCHR$(128) ;CHR$(129) ;CHR$(130) ;

160 LPRINTCHR$(12) ;

170 LPRINTCHR$(27) ; “*c5f IF” ;

Line100isjustthe<ESC>Eresetcommand.Lines110and130turnonand

off theunderlinefeature.

Line 140 turns on transparentprinting, which forces printing even for

normallyunprintablecontrolcodes.Thethreebytesyouwanttoprintarein

line 150.To seewhat’sthere,yousenda formfeedcommandin line 160.

Andfinally,line170usesthefontcontrolcommandtomakethecurrentfont

permanentandthendeletealltemporaryfonts.