Showing posts with label plates. Show all posts
Showing posts with label plates. Show all posts

7.10.2009

must. kill.

OK, this blog entry is being posted a bit late - I wrote most of it, then went on vacation, yadda yadda. So I'm actually referring here to some printing I did a few weeks back:

I've had a frustrating couple of days in letterpress world. You might remember these calling cards I printed a few weeks ago, which came out decently but overall I wasn't thrilled with the level of impression the paper took. So, I decided to order in some 134# Aqua Cranes Palette paper, since the 100% cotton is supposed to do really nicely with letterpress. It really is tasty paper, and I was excited to try it out. So on Friday I prepped my Pilot with the same calling card plate and mixed a nice deep green color. I pretty much ran into every problem across the board: not enough impression, uneven inking, un-crisp printing, too much ink, not enough ink, etc. It was just one of those days. So, I decided to just pretend it didn't happen and instead try again on my big 8 x 12 tonight.

Unfortunately, things didn't go much better. I'll start with Problem #1: Uneven Print, and excuse the crap photo but I'm too tired to do any better:

See how the print is heavier on either side, like the "www" and "m"s in "com"? It gets lighter/crisper in the middle, but the edges just look really...squishy. I thought maybe it was just an uneven impression problem, so I spent a long time doing some serious makeready - cutting out individual letters from packing to try and compensate. The weird thing is, this exact same problem was happening in the exact same places on the plate when I tried the print on my Pilot at home.
Question:
Could this mean that the plate itself is uneven?

As soon as it started to look okay, I ran into Problem #2: Uneven Inking. Basically it seemed like a lot more ink was being laid down on one side of the plate than the other. There's a circular graphic at the top of the card, and it was really apparent that one side of the circle was printing more heavily than the other. Looking at the back of the cards, it didn't seem like the impression itself was uneven (indicating uneven platen pressure), so I thought it must have been the roller just laying down more ink on one side. I tried taping up the rails to raise the rollers on just the bottom of the chase, which only sort of worked. Since I don't have a picture, I'll do my best approximation via Illustrator:


Question:
Is it common for uneven inking to occur vertically like this? How can I compensate for this?

This brings me to Problem #3: Un-Crisp Printing. Once again, I'll do my best to illustrate this problem without a photo. The left side is what the graphic should look like, and the right side is how it has been coming out:


As you can see, there are some fine details in the flowers that should remain unprinted. Instead, the flowers are completely filling in with ink. I noticed that the problem got worse the longer I printed, so I'm wondering if maybe the ink was heating up and getting too squishy. I thought maybe the problem was simply too much ink, but when I removed some from the press all I got was a mottled print - incomplete coverage indicating too little ink but the lines were STILL filling in. The only thing I can think here is that I need to dry up the ink a little. I ordered some drier from Braden Sutphin the other day and will give it a try - but does anyone know if I'm on the right track here? I'm pretty out of ideas, and I know that a crisp print CAN happen along with a deep impression.
Question: Is ink consistency to blame when ink amount has been ruled out and fine details are still filling in?

::sigh::

3.06.2009

And So It Begins...

The water based inks don't come in Pantone mixable colors, so I decided just to pick 4 basic colors to test with. There could be some issues with post-drying smearage, if the prints are handled by anyone with "sweaty hands," so I didn't want to invest too much in a lot of the stuff just yet.





I finally sent in my Dead Things artwork for film and plates, and picked it all up from The Evanston Print & Paper Shop today! They look great of course. I cut up one of the beast bones stationery for test printing on my Pilot, and stuck it to my brand new Boxcar base. I did a quick first lockup in the chase, but realized after it was in the press that it needed to be shifted so that the base and plate were in the upper right hand corner. I'm still not quite used to the idea of printing with a platen press where I'll need to use gague pins to hold my paper in place, as I've got much more "real" experience on a Vandercook. I'm taking things really slowly because I do NOT want to dent my base.

Anyway, so finally I got the lock looking good so that the gague pins could sit in the lower left hand corner of the tympan paper and not hit the base, which is in the upper right hand corner of the chase. I started to realize it was going to be hard to get everything exact with this particular print because I've only got about 1/4" between the print end and the edge of the page. Also at 5.5" x 8.5", this size paper is really pushing what the Pilot can do - so this stationery might be better left for my 8 x 12.

Regardless of whether I continue with this big print or test something smaller, I've still got to figure out how to prevent my grippers from smashing into the base. Supposedly I ought to be able to turn the little cranks to loosen the gripper arms and adjust them, but they're in a really awkward position and extremely tight. I'm having a hard time figuring out how to loosen them, so I posted on Briar Press and will hopefully get some suggestions.

Brad suggested that it also seems like my new rollers may be a bit oversized. They're even being lifted off the rails as they pass over the chase, so I may have to investigate taping up the rails to prevent over-inking and roller sticking. Oh, the troubleshooting begins!

In more successful news, the other day I went about trying to make some paper that remained consistent in color and thickness. I decided to stick with mostly black and white junk mail like credit card offers (though they are fewer these days...), and it actually tured out pretty well. After following some drying advice from a group of paper makers, my press bar / sponge time was greatly reduced and I came out with fairly flat, nice sheets.

My favorite thing about recycling paper is that if you don't blend it up TOO much, you're left with a few letters scattered here and there.

2.06.2009

The Benefit Of Working At Home

I'll just let these photos speak for themselves:

Today I worked on cleaning up the images for the gift tags, coasters, stationery, and envelopes in my "Dead Things" series. I need to have 3 sets of film/plates made, so I filled in the extra space with 2 cards I'm working on for the "In A Word" series. Here's what it all looks like squished up together for the film:



After the plates get made, I'll cut it up and stick the polymer to my lovely new Boxcar base. Then it's into the Pilot for printing! I sent in my old rollers with cores and one set of trucks each (both Pilot and 8 x 12) to Roll Crafters to have new rubber rollers made, which should take about a week. Now all I've got left to do before printing is buy some of the Akua water based inks to try out!

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