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screen printing => Screen Making => Topic started by: DCSP John on December 17, 2014, 03:20:35 PM

Title: 4900 Output issue...12/17
Post by: DCSP John on December 17, 2014, 03:20:35 PM

Hi Everyone..

For vectors -we run Accurip thru our 4900.  All black carts.
For rasters - we print straight to the 4900 thru the printer driver.
I am guessing that a grey scale image uses the Lt. Black, Photo Black and Matte Black
cartridges when printing out of Photoshop

Never an issue.

In any case, we apparently have a clogged nozzle in the print head.
Can't get a solid black print thru Photoshop. Still great output thru Accurip.

Anyone ever have a clogged nozzle that could not be cleaned, or power cleaned.
We have tried like ten times. No luck. About to put in the call to Epson to schedule a tech.

Any of you printer gurus have any thoughts on this?

Thanks.  John

Title: Re: 4900 Output issue...12/17
Post by: ebscreen on December 17, 2014, 03:51:06 PM

This link says it all. (http://www.luminous-landscape.com/forum/index.php?topic=61585.0)

Have you run a nozzle check? Identify which color/nozzle isn't firing before going any further.

Is there a particular reason you don't go through Accurip for raster stuff? Probably best.
You don't want greyscales on films, binary only. RIP also gives you better control over linearization.

Lastly, I believe with Accurip you can choose which ink color to use to print from, thus avoiding whichever
one is clogged.

Title: Re: 4900 Output issue...12/17
Post by: kingscreen on December 17, 2014, 05:02:01 PM

Our 4900 clogged and wouldn't print solid black a few weeks ago.  Multiple power cleanings and nothing!  Finally, we nervously tried the Windex trick and it worked!  See here: https://www.youtube.com/watch?v=lU6PbizbKaw (https://www.youtube.com/watch?v=lU6PbizbKaw)

Title: Re: 4900 Output issue...12/17
Post by: DCSP John on December 17, 2014, 05:10:45 PM

Nice. We will try the windex thing tomorrow.
Great link. Thanks.

EB - well, jpegs and psd files always print with with rough edges, or half toned edges when
printing thru Accurip. Hard to get solid edges. Maybe you have a trick or two that you want to share?

John

Title: Re: 4900 Output issue...12/17
Post by: ebscreen on December 17, 2014, 05:21:01 PM

That's the nature of raster and why I prefer vector for anything sharp. As long as it's not excessive
it should not affect final print.

Title: Re: 4900 Output issue...12/17
Post by: SteveS on December 20, 2014, 03:40:53 PM

We had a batch of bad Ulano film a few months back that wouldn't hold ink well. The edges would muddle up on solid areas.