Hi Ross,
I have done process printing on both manual presses and automatic presses. It involves a lot more labor in setup time, but the results are awesome!! There are special process inks in Cyan, Yellow, Magenta, And of course black. When you order ink specify the process colors. Also to print your films you need a printer that will print the half tones. I have printed CMYK to transfer paper, but I wouldn't recommend it.
Jeff
read your stuff fluid, not bad. index is my game. i use rgb channels and cmyk channels to get my full tonal values when indexing. i eat those dam grey point photoshop algorithmic choppy index values for lunch. hehe
hey fluid what is the best dpi for an inkjet printer? this is an important question. because the dot has no edge definition. so really this is a simulated question. think about this - i can produce a shirt at 9600 dpi, no kidding.
Last edited by Solmu; October 30th, 2007 at 07:17 AM.
Reason: merging for clarity
i can register a 8 color job in under 2 min to 1000th of an inch
If I start doing more screen printing, I'll probably buy a 6 color press with micro registration. 8 color would be nice, but I'd have to build a new shop around the press.
first the edge of every dot is blended like an injet. to do this i used a transparent white negative to bleed the edges. you have to compensate in photoshop for this. it was printed at 181 ppi. 7 colors.
registration is the key. below is a pic of the equipment used to register this.
otherwise your setup will not be cost effective. actually painful.
there is a proprietary pic for you fred!
by colors do you mean what brand of ink?
Last edited by Solmu; October 30th, 2007 at 07:19 AM.
Reason: merging for clarity
In order for this to work, your positives would have to be registered exactly the same on every screen before burning. In this case, you are registering the screen frame to the platen, not the image, which is fine as long as the images are precisely positioned on each screen.
So how are you getting your positives registered on the screens so precisely? Do you use the same gauges?
as for the alignment of the film to the screens. the same machine is used for the alignment on the exposure table. there are pins mounted on the glass to hold the film. multiple screens can be exposed at 1 time. the exposure table has multiple alignment heads. as for the film, a computer program was written special for aligment in a machine custom made by me. see pic below
the pic below is the vaccum pump assembly for the punch
Last edited by Solmu; October 30th, 2007 at 09:14 AM.
hello rrc62.
its like u are getting me abit confused here , generaly it is said that u can't print cmyk on darks instead u print simulated proecess color and worse u said plastisol is opaque which means u are surely not using transparent plastisol and last i don't know the kind of underbase white u are using for if it's matte base then i don't known how u gonna transfer it
to a shirt ,since matte bsae after curing won't melt into the shirt, so i would like to know if u are talking of doing doing simulated proces color or cmyk with transparent plastisol on darks. please i am really lost.
from what i can gather from my experience working in offset pre-press one of the major hurdles would be in the design. If you make your designs so that each colour has the same ink density (before separations) you would have a lot more chance of getting it to look right. But if your density's run something like this you would have a real fight ahead of you - C 1 M .3 Y 2 K .4
With only 4 colors, you would only be able to print process on white shirts.
If the C8800 is postscript, it should have a driver option to print halftones. For my color phaser, i need to tell it to print as b&w fax friendly.
Photoshop can make bitmaps the same as ghostscript and can print to a none postscript printer.
fred
ok, i have an epson 1400....what do i need to start printing basic halftones? i just want to print black and white.. I am not interested in doing any process printing right now....but i figured you all might have some answers for me....software?....mesh?....etc...thank you kindly! and obviously i am working on a super tight budget....so maybe someone could give me the bargain way and then maybe a little more expensive way..
Re: Process screen printing - Photos 
Re: Process screen printing - Photos 
and obviously i am working on a super tight budget....so maybe someone could give me the bargain way and then maybe a little more expensive way..
