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GRAPHICS
TheStarLaserPrinter8offerstwokindsofgraphics.Itprin~srastergraphics
(sometimescalled “bit-mappedgraphics”),which specify each dot in a
graphicspattern. And it prints pattern graphics,which prints Iincs and
pattcmcdblocks.
Bc aware,though,that addinggraphicelementsalwaysslowsup printing
withlaserprinters.
Starting raster graphics
Youfollowthesefourstepswhenyouuserastergraphics,intheordershown:
1)
Definewhatresolutionyouneed.
2) Issuethe commandto startgraphics.
3) Sendthecommandsto transferrastergraphics.
4)
Sendthecommandto endgraphics.
‘Youmustdefinethe resolutionof yourrastergraphicsbeforeyouusethe
StartRasterGraphicscommand.To definethe resolutionyouneedin your
graphics,sendthiscommand:
<ESC>*t n R
For the valueof n you can entereither75, 100,150or 300.That number
defineshowmanydotspcrinchyouwantinyourfinalgraphicimage.The
defaultresolutionis75dotspcrinch.Aftergraphicshavestarted,theprinter
willignoreany resolutioncommanduntilit receivesthecommandto end
graphics.
Rastergraphicsstartprintingeitherattheleftpageedgeorthecurrentprim
position.To startrastergraphicsyou sendthiscommand:
<ESC>Wn A
Youcanput in eitherO(zero)or 1(one)forthe n value.If youenterO,the
marginforgraphicswillbcsetattheleftmostpnntablcedgeofthepage(not
the same as the left marginfor text).But if you enter 1, the margin for
graphicswill be set at the columnof the currentprint position,and your
imagewillappearonlyto therightof thatgraphicsmargin.
A programminghint:moveyourprintpositionindotincrementswhenever
you’redealingwith graphics.It’s easierthan tryingto calculatecolumn-
widthsor dccipoints.
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