Author Topic: This weekend...  (Read 2586 times)

Offline preston

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This weekend...
« on: April 07, 2010, 08:19:34 PM »
Well I have another one to print at this weekend and I figured I would post my poor excuse for artwork. The customer loves it though and that is what counts.

This will be printed as a 4 color process with an underbase, all wet on wet with a manual press. If I can get it in time I will be using Unions PRPL-1080 Fine White Printer as the underbase. I have used this ink before and while it is not good for dark, dark garments it works very well on light colored shirts where you still need a base for 4CP and it prints easily through a 305. If I remember, I will try and take a pic of a printed shirt but don't hold me to it.

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Offline preston

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Re: This weekend...
« Reply #1 on: April 09, 2010, 03:08:02 PM »
Well, I made the films last night and shot the screens about an hour ago. For the 4 color process films I exported my Corel file to a Photoshop 200 dpi RGB file with a transparent background. I then used QuikSeps Pro to separate it into CMYK. Just a note here; I absolutely love the way QuikSeps Pro handles CMYK separations as it automatically pulls all the black to the black channel.

I then decided to output the films at 60 lpi (I normally do 55 lpi) and all screens at 22.5 degrees elliptical dots and ripped it with FilmMaker. I was a bit concerned as there where some very small dots (like human hair size and smaller) on the film. I had my screens coated 2/2 with Proclaim/CL (love that emulsion) and shot the first 305 screen on the MSP-3140. The screen came out absolutely beautiful. No dot loss at all. Shot all the rest and got the same beautiful results.

Usually for these events we also have a 1 color back print where they have all their sponsors listed. Since this was a 1 color with only one area of halftones I just sent it to the rip out of Corel using the same LPI and angle as I did on the CMYK from Photoshop.

I did not have time to get any Union Fine White Printer ink in so I am just going to put some extender in some regular white so I can print it through a 305.

I have not set the job up yet but plan on doing it here in the next few hours to see if it prints as good as I think it will.

We shall see.
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Offline Duke of York

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Re: This weekend...
« Reply #2 on: April 09, 2010, 03:56:13 PM »
I absolutely love the way QuikSeps Pro handles CMYK separations as it automatically pulls all the black to the black channel.

Why do you prefer this??

Take for example, the black 35 ford with the flames and the shadows below the cars. With a light level of black generation, there will be upwards of 60% CMY in addition to the 100% black. By allowing 300% ink coverage, the black is guaranteed to print as a rich dark black, because the black is both being fully printed with black AND nearly fully printed by mixing CMY. When only black is used to print the black, any screen cell which fails to clear, will appear as a snowflake. Even if all of the black prints perfectly, the knit of the shirt can still leaving the black looking thin.

Another issue of black generation is the amount of color pulled to the black channel. Personally, i believe that the blue 57 pickup shouldn't have any of its body color showing up in the black channel. When photoshop generated the black using the maximum setting, the black channel can have up to a 15% black tint. If you are not seeing any black tint in the CMYK version of the pickup, then ALL of the black isn't being pulls, only a lot of it. Heavy black can look good for graphics of cars, but for human features, heavy black = wrinkles.

fred


Offline Jason-23

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Re: This weekend...
« Reply #3 on: April 09, 2010, 04:02:13 PM »
RUN VIDEO!!! take pictures too!!! of the whole set up...please!!

Offline preston

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Re: This weekend...
« Reply #4 on: April 09, 2010, 06:31:21 PM »
I know what your talking about Fred and it is fine for the solid black areas but I have found that if I do not remove the black from the other channels then it can give you a muddy looking black where there are just tints of it.

Also, there is no black in the 57 truck body except for the grill and outlines. At least not in the art or seps I have.

As far as the snowflake thing. Why would I have a screen that was not clearing? The is usually a sign of underexposure. As far as dust bunnies, that can happen anywhere in the print not just the black areas so it is a mute point to me.

I have always pulled all the black out of the other channels. It just makes a cleaner, sharper print. I used to have to go through all the art and make sure all the black everywhere was pantone process black before I shipped it off to PS and then I would still need to work on the art in PS to get rid of the muddies where black was used to shade another color. QuikSeps Pro does all that for me in the blink of the eye.

I here what you are saying but I personally do not like printing CMYK where CMY makes any part of the black in the print. If I was going to rely on that I would just drop the K channel all together.

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Offline preston

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Re: This weekend...
« Reply #5 on: April 09, 2010, 07:08:33 PM »
RUN VIDEO!!! take pictures too!!! of the whole set up...please!!


First print (test). WCMYK all wet on wet. Sand color shirt.

Thrown on a piece of plywood in my shop. Not the best pic but it is all I have right now.



White base


Yellow


Magenta


Cyan


Black
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Offline Duke of York

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Re: This weekend...
« Reply #6 on: April 09, 2010, 10:13:36 PM »
Let me first say, i like the way the shirt came out.

Thanks for posting the images of the separations, it showed me clearing what was happening.

That i'm seeing, is a "light" or a "medium" amount of black generation, but there is a huge amount of under color removal, so while not much black is being generated, where the black is solid, all of the other colors are being removed. I've attached the range of photoshop black generation options.

Personally i like the rich black, verses 1 color of black. That is a matter of personal taste. If anyones personal taste is to use the single hit of black, buy quickseps.

One thing i do question, is what happened to the red car. The red car is VERY red. The color red is composed of near equal amounts of magenta and yellow, but somewhere in your conversion process, the tints used in the magenta separation are clearly lighter than those of the yellow channel.

I've attached an image of the separations recombined to show the color shift which resulted.

fred


Offline screenxpress

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Re: This weekend...
« Reply #7 on: April 10, 2010, 10:49:47 AM »
I'm not a 4cp guy and excuse me for saying this, but it looks dull to me. Hopefully it's the camera work.

And am I to understand that you printed wet on wet on top of the wet white? No Flash on white?
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Offline killergraphics

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Re: This weekend...
« Reply #8 on: April 10, 2010, 11:01:32 AM »
For me anyway the first one or few are light in color, till the colors to start their mixing.
I'm always in a hurry and hit the first one or few a couple of times so I don't have to wait. But then they get too dark til the print comes back around to normal.
I also am interested in the no flash white idea and can't wait to see how it goes.
And I would like to know if he has to wipe the screens more with it done the no flash white way.
But if anyone can pull it off it's P.
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Offline preston

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Re: This weekend...
« Reply #9 on: April 10, 2010, 03:57:47 PM »
I'm not a 4cp guy and excuse me for saying this, but it looks dull to me. Hopefully it's the camera work.

And am I to understand that you printed wet on wet on top of the wet white? No Flash on white?


Part of it is the camera and part of it is that normally the first few prints are light until the other screens start to load.

I also am interested in the no flash white idea and can't wait to see how it goes.
And I would like to know if he has to wipe the screens more with it done the no flash white way.
But if anyone can pull it off it's P.

Went fine. I printed on white, ash, sand, light pink and light blue shirts all wet on wet and they came out great. I have some vid of them but I need to get my vid capture software back up and running.

And, no I did not have to wipe the screens. The trick is the white. I could not get and "Fine White Printer" in time so I based some Rutland Snap white down with some reduce and finesse to where it was the constancy of FWP. Printed all colors on 305 mesh, Proclaim/CL emulsion coated 2/2, 60 lpi, 22.5 degree elliptical dots. Print order was White, Yellow, Magenta, Cyan, Black.

The wet on wet over the white only works on light colored shirts. You would need to flash if it was a dark shirt such a navy or black.

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Offline socalfmf

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Re: This weekend...
« Reply #10 on: April 10, 2010, 04:03:21 PM »
Preston,

when will you be back? I need to talk to you about some of the car artwork you have...

let me know

thanks

Sam

ps. these look good!!!
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Offline preston

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Re: This weekend...
« Reply #11 on: April 10, 2010, 09:49:40 PM »
We here is a short not so good video produced with the crappy Power Director trial software.

Sorry there is not more but I had to shoot this when things got slow and the weather was turning bad.

<a href="http://boards.screenprintersopen.com/vids/autofest.mp4" target="_blank" class="aeva_link bbc_link new_win">http://boards.screenprintersopen.com/vids/autofest.mp4</a>
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Offline Homer

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Re: This weekend...
« Reply #12 on: April 10, 2010, 10:29:39 PM »
Looks good P! you know what that trailer ? a wrap . . haha. . .nicely done.


Offline preston

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Re: This weekend...
« Reply #13 on: April 11, 2010, 10:27:55 AM »
Preston,

when will you be back? I need to talk to you about some of the car artwork you have...

let me know

thanks

Sam

ps. these look good!!!

I'm around. What do you need to know?
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Offline SkyLinePrints

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Re: This weekend...
« Reply #14 on: April 11, 2010, 10:58:12 AM »
i see those panel frames are working good for you. what'cha got in them? 305?
Have a great day! :)

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