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[Photoshop] - Halftone is KILLING me....

 
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Old March 17th, 2008 Mar 17, 2008 3:03:59 PM -   #1 (permalink)
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Angry Halftone is KILLING me....

I have been screen printing for quite a while now, but have been dealing mainly with one, two or three spot color prints...simple stuff... only recently I decided to figure out how o print halftones... I bought Fast Films, but I cant get it to do anything for me...
job: the text and trap are black and there is a simple image with slight gradients......all i want to do is print little bitty black dots for the gradients..doesn't seem like it should be this difficult. When I try to use fast films it applies halftone to the COMPLETE image, dots ALL over the place instead of just where i need them... ... When I try to use the Color Halftone filter in photoshop the dots are just way to big... this is killing me... I've been working on this for 7 hours now...any suggestions would be appreciated...
 
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Old March 17th, 2008 Mar 17, 2008 5:29:11 PM -   #2 (permalink)
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Default Re: Halftone is KILLING me....

Can you post the image here so we can see it and give you a more informed advise?
 
Old March 17th, 2008 Mar 17, 2008 5:52:33 PM -   #3 (permalink)
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Default Re: Halftone is KILLING me....

image quality has been sacrificed due to size restrictions... original image is 350dpi at 17"x21". But, here it is....very simple...
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File Type: jpg CB_My_Furniture_Guy.jpg (72.8 KB, 152 views)
 
 
Old March 18th, 2008 Mar 18, 2008 7:06:15 AM -   #4 (permalink)
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Default Re: Halftone is KILLING me....

The way I would do this design it's this; (my guess is that you are working in Photoshop) you need a three color separataion, 1st: get the solid black from your image the inside color of the caracter you can eliminate with the selection tool or go to image/ajustment/selective color and deem all colors but black.
2nd, get the brown the same way only here you want to eliminate the black instead, when you get your color turn it into grey scale then use lavels to make it solid black and add a black stroke arround it because you will lose a little edge in the transaction.
3rd, the halftone on the image you have to use a separate screen to get this film first eliminate the black color then go to image/ ajustments/color saturation and start deeming color by color until you get the graduation you like, after that you can convert it to gray scale and ouput your films. good luck.
 
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Old March 18th, 2008 Mar 18, 2008 8:43:44 AM -   #5 (permalink)
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Default Re: Halftone is KILLING me....

I would do everything in vector except the little table guy, but if you are not as picky as I am and you have a good resolution artwork, you can do everything in Photoshop, but it's not a job for Fast Films. This is how I would do that separation.

Duplicate the red and the blue channel. The duplicate red channel is gonna be your black, all you have to do is open the "levels" dialog box and move the right slider to the left until you have no gray or almost no gray. You may want to move the left slider to the right to increase the darkness a bit.

The blue channel is gonna be your brown. lasso select the type and delete it, and that's it.

to output halftones you need either a post script printer or a RIP software. If you don't have any of them you can split the channels and change your separation channels to "bitmap" (image/mode/bitmap). you'll see the option that will let you use halftones and change the angle and frequency.

Go with this formula and you will do fine: screen mesh / 4.5 = halftone frequency

Example: if you are going to print with 200's, then 200 / 4.5 = 45

Your halftone frequency should be no higher than 45 dpi

Have fun!
 
Old March 18th, 2008 Mar 18, 2008 12:14:17 PM -   #6 (permalink)
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Default Re: Halftone is KILLING me....

Quote:
Originally Posted by ImageIt
The short answer is that you are probably worrying to much about the dots.
what i mean is, I want brown to be brown, black to be black, and the darker (shading) brown to be halftone black.....
 
Old March 19th, 2008 Mar 19, 2008 11:58:52 AM -   #7 (permalink)
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Default Re: Halftone is KILLING me....

thank you all, I think I got it now....
 






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