开云体育

When you print to a laser printer, the paper gets heated causing the paper
to expand. The moisture also gets driven out, which I believe causes the
paper to shrink. Net expansion probably depends on the relative humidity of
where you live. Depending on the grain of the paper, it will probably
expand/shrink more in one dimension than the other.

Running some pages through the printer immediately before prior to printing
on them will help. You may need to print something along the edges to get
the wire to heat up.

You can really see this effect on duplexing laser printers, where the first
side imaged has a sometimes dramatically different size (up to 1/8") than
the second side imaged.

I believe that with transparencies, the expansion is more uniform. Because
the media is expanded while being printed, it causes your image to shrink
once the media cools down.

With ink jet printers, you're adding moisture to the page, which causes it
to expand. Here, the amount of ink makes a difference (more ink = more
expansion). The grain of the paper will cause different amounts of expansion
in either dimension. Things should shrink back up a bit once the ink is
completely dried.

I wouldn't expect transparencies to be affected on an ink-jet (except for
heating effects, which should be much less than a laser printer).

Dave Hylands