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Re: [BKARTS] Registration of Ink-jet back-up
The feed mechanism on inkjets is jerky at best and
makes registration in backing-up, wether printing a two sided form or
backing-up on a second run, almost impossible.
I printed the Deluxe edition of American Decorated Publishers' Bindings
1872-1929 on an Epson R1800 ink jet printer, which does a gorgeous job
with an UltraChrome ink set (very durable) CMYKRB, matte and photo
black and gloss optimizcer, 5760 x 1440 dpi.
The trick to proper backing up is not in the paper handling, which is
excellent. It's the paper that I found to be the issue. I
recut every sheet of 13x19 double-sided matte paper to uniform size and
configured the output accordingly. Keep in mind that the printer
specification is 12.99 inches. Here's one way to get it right: use a
program like inDesign to create your page layouts. THen use your
imposition utility to set up your double sided printing. I had the best
results by exporting the book as a PDF, then using PDF Snake to do the
imposition, allowing for creep by trial and error. That gave me an
imposed PDF for two-sided printing. Make sure that you are set for
how the page will turn for the second side. I prefer to print
landscape and flip head to tail on the printed page, so the same edge of
the paper is always feeding in the printer, flipped horizontally.
That edge needs to be square, and the dimension needs to be
I find that the pre-cut inkjet paper is not always square, and the
dimension varies, perhaps from the top of a stack in the guillotine to
the bottom, or maybe not always flush against the back fence, wherever
they do the final cutting. That's why I cut it one sheet at a time
on the board shears.
You also need to adjust the side guide on the paper feed so the paper
always registers against the fixed edge. If there is play in the
paper feeding it might not go in straight or in the right position.
Once you get all the adjustments down it should be stable and you can
print however many you need.
The alternative is to go with digital offset, like a an HP Indigo
5000. That also does a beautiful job, but again the paper has to be
perfect. For that machine you can't cut the paper afterwards, and
they make paper specially for it. The problem there is that paper
dust from the cutting will mess up the internals of the machine.
That's the press I used for the Limited Edition of the same book, but not
here in my studio--I sent it to Atlanta to be done--no problem because
you can upload the file by Internet and they UPS the finished sheets the
next day. It's gorgeous printing, but it's only 300 dpi--better than most
offset printing (and perfect registration because all the colors are
printed off one plate), but nowhere near the quality of the
If you're printing black and white photos the R1800 is not the best
printer--it's really for color work. The K3 inkset produces better prints
(using three blacks), on machines like the 2400 or one of the newer or
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