Black and White Newspaper Line screens

Hi everyone, this is my first post. I searched the forum regarding this topic but I couldn't find any information. Basically I am working on a big project that involves black and white photography for newspapers. I haven't had any experience with using line screens over my images and am wondering how to do them correctly. I tried help in Photoshop but I didn't have very good results with the Bitmap and then 85 line screen setting. Everything looked very noisy (worse than a printed newspaper) when I printed the file out. If someone could help me out I'd really appreciate it.

Thanks,
James

first, you have to undersant than you little printer does not print in the smae than a newspaper would...

The best thing would be a to ask your qeustion to your newspaper, they know their setting... they know their machines... so they should the rigth answer.

Thanks for the reply Delisk. My problem is that this project will be going out to hundreds of newspapers and I am trying to get everything set before it goes out. I'd appreciate any help anyone may have.

Sincerely,
James

All you really need to know about a newpaper printer's linescreen is to scan any images at approximately twice that number, e.g. at 85 l.p.i., you scan any images at 170 p.p.i. If you're sending it as just a Photoshop file, it need not be any more than 200 p.p.i. —any more resolution than that is wasted file size. Keep you text as vectors (do not rasterize) and send copies of every font you use along with the file.

Your best bet, though, is to get in touch with the prepress department at one or more of the newspapers and get the details about how they want files submitted.

Hello all
I used to do quite a bit of National Press ad's in the UK. Basically, just as Utopian23 said, 2 to 2.5 times the screen (i.e. 165 lpi for 65 screen). One thing to be aware of however, is some papers run roto gravure (sic) as opposed to litho, this means they overink substantially, anything over 7-80% tint goes black and conversly, anything under 15% disappears leaving a halo or shouldering effect. I used to get a photshop curve from their repro dept and run a special set of bromides for those papers changing the images within the quark file. Most litho stuff in the newspress can be pretty hit and miss so i'd aim slightly on the light side.