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An inkjet (or possibly laser) printer, with a built-in ability
to trim the
output. This allows you to print any size page (up to the
maximum width of the paper supply), including banners,
also to print bleed images with zero margins.
The paper is fed from a continuous spool, with tractor
The spool is a bit wider than a standard 8.5" piece of letter
paper (large format printers could support greater widths).
Just past the print head are three rotating blades, two
parallel to the path of the paper and one perpendicular.
two parallel blades position themselves at the appropriate
width, and the perpendicular blade slides across each page
it comes out, causing the printed sheet and the waste edge
material to fall into the output hopper.
||I have a suspicion that this is baked, or perhaps
was baked back in the 80s and 90s when desktop
printers were still new and exciting rather than
just getting on with it.
||However, many (all?) modern inkjet printers can
bleed right to the edges of an A4 sheet. I'm not
quite sure how they do this without making a
mess, but they do (at least, mine does and it's a
low-cost Epson printer/scanner/copier).
||A printer that could cut out complex shapes,
though, would be nice; a laser mounted on the
print head would do it, when LED lasers get a few-
fold more powerful.
||But with this design, you could trim to any size: Letter, A4,
postcard, or even crazy sizes like 4"x250". You could print
your own streamers.
||They had a printer that did this at my old job. They used it for making the schematics that went with technical manuals.
||The paper fed from a roller.
||I thought it was an "office supplies in Hell" idea.
||//a laser mounted on the print head would do it
||I have one of those old Epson ones, with the fitting for the light sabre, not too bad but too easy to cut the edge off the desk/cat etc