Illustrator CS5 javascript JPEG export 300 DPI & max quality

i new illustrator cs5 scripting (javascript) , i'm trying export .eps .jpg.  image quality 8 , dpi 300.

 

i've seen several post asking (only few answers).  answer aren't working me though.

i found post saying can't done (http://forums.adobe.com/message/1103680) it's pretty old.

 

when run script have saves dpi of 96 higher minimum mentioned in post above.

 

thanks much.  snippet script below...

	var targetfile = new file(fullfilename);
	if(!targetfile.exists) {
	var type = exporttype.jpeg;
	var saveoptions = new exportoptionsjpeg();
	saveoptions.qualitysetting = 80;
	saveoptions.horizontalscale = (300/72) * 100;
	saveoptions.verticalscale = (300/72) * 100;
	saveoptions.antialiasing = false;
	saveoptions.optimization = false;
	app.activedocument.exportfile(targetfile, type, saveoptions);
	}

you'll have reduce size of resulting image file achieve resolution want. did similar , file expected 416.67% larger original. when reduced 24% of size, resolution 300 ppi.

 

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