Path length not same when printed

Question

Hello All Forum members,
I have a fuculty member that is prepping a document in illustrator. The image is a ruler. On the screen the paths show up as 48 inches long with 48 1 inch lines 1 inch apart. each line / path length in the w-vlaue in the inspection bar showing the correct lengths. the main backbone of the ruler is a black box that is 48" long.
When we print this at 720dpi on an Epson 9900 the Ruler prints at just under 49" we did another test with just 4pt think lines.
5 inch prints at 5.1"
10 inches just over 10" 24 inches print at 24 1/2 "
on and on. so does anyone know why the values in the w-value are different when printing?
I was able to check this agains my HP laserjet in my office, and again, line lenghts versus the w-value are not the same.
Any thoughts?
Jeremy Smith

Answer 1

I've seen this on a smaller scale when "Borderless" printing is selected in the Print dialog and the artwork comes close to the edge of the sheet.  See if you can establish a holding line on the document/artboard edge or select a non borderless print method under the Print dialogs ( Page Setup ).