Focus adjustment on Esko Spark CDI 2530

Ask or answer questions related to the flexo prepress environment.

Moderator: Frank Burgos

Focus adjustment on Esko Spark CDI 2530

Postby Tadeoski » Tue Jul 07, 2015 9:48 am

How can you adjust the focus on an Esko Spark CDI 2530 for plate thickness the machine is set up for only 2 sizes
Tadeoski
 
Posts: 8
Joined: Mon Jul 06, 2015 5:42 am

Re: Focus adjustment on Esko Spark CDI 2530

Postby Starbender » Wed Jul 08, 2015 10:30 am

CDI 2530 can accept 0.76mm to 3.94mm plate thickness. Adjusting focus is independent from plate thickness. When you set up focus offset by using 1.14mm plate, CDI automatically adjust offset for other plate thicknesses.

Are you using focus search option at the exposer module?
Starbender
 
Posts: 22
Joined: Mon Jul 30, 2012 10:20 am

Re: Focus adjustment on Esko Spark CDI 2530

Postby Tadeoski » Sat Jul 11, 2015 4:58 am

Many thanks for reply will give your instructions a go
Tadeoski
 
Posts: 8
Joined: Mon Jul 06, 2015 5:42 am

Banding on Esko Spark CDI 2530

Postby Tadeoski » Wed Jul 29, 2015 6:03 am

We have a problem with banding as per my attachment can anybody suggest possible solutions to solve this
Attachments
Esko.jpg
Esko.jpg (32.5 KiB) Viewed 6860 times
Last edited by Tadeoski on Mon Aug 03, 2015 10:45 am, edited 1 time in total.
Tadeoski
 
Posts: 8
Joined: Mon Jul 06, 2015 5:42 am

Re: Focus adjustment on Esko Spark CDI 2530

Postby Starbender » Wed Jul 29, 2015 8:53 am

Can you please check this banding problem before processing? At the black mask?
Can you took close up photos of the black mask?
Starbender
 
Posts: 22
Joined: Mon Jul 30, 2012 10:20 am

Re: Focus adjustment on Esko Spark CDI 2530

Postby Tadeoski » Thu Jul 30, 2015 5:12 am

Hi the banding is occurring on the black mask before processing as on the photo
Tadeoski
 
Posts: 8
Joined: Mon Jul 06, 2015 5:42 am

Re: Focus adjustment on Esko Spark CDI 2530

Postby Starbender » Mon Aug 03, 2015 12:25 pm

Did you check&clean focus lens at the output?

When I look at the picture, I think laser beamtable has problems. Is this second hand CDI? What's the history of this 2530?
Starbender
 
Posts: 22
Joined: Mon Jul 30, 2012 10:20 am

Re: Focus adjustment on Esko Spark CDI 2530

Postby Tadeoski » Tue Aug 04, 2015 5:23 am

Yes it is a second hand machine we bought from a printer in the UK what kind of problems can occur with the laser beam table and are they fixable
Tadeoski
 
Posts: 8
Joined: Mon Jul 06, 2015 5:42 am

Re: Focus adjustment on Esko Spark CDI 2530

Postby Fuzz » Tue Aug 04, 2015 11:52 am

Have you inked up this plate? Does it show in your print? I seem to recall seeing this problem in the past and it driving our plate maker nuts but it never affected the print.
Fuzz
 
Posts: 259
Joined: Mon Jan 19, 2009 4:37 pm

Re: Focus adjustment on Esko Spark CDI 2530

Postby Starbender » Tue Aug 04, 2015 12:38 pm

Fuzz, I think you're recalling a stain level which is visible at the black mask but it should not visible after processing. But this picture shows lots of banding. Banding occurs if focus lens is really dirty or out of alignment. Or CDI exposing with a missing beam or beams. Either way a technician must check your laser, laser power calibration and carriage.
Starbender
 
Posts: 22
Joined: Mon Jul 30, 2012 10:20 am

Re: Focus adjustment on Esko Spark CDI 2530

Postby Boki » Fri Aug 07, 2015 6:39 am

can you send more info..
how you gravure what: speed/beams/anngle and liniature of this len file
there few things have to be chck, i past i had same problems with esko machines
when you gravure in black mask when you see 20-30% dots is clear or there is strip lines?
etc.. add more info
or pm me hope fix it
:)
:smile:
Boki
 
Posts: 8
Joined: Fri Jan 11, 2013 4:48 am

Re: Focus adjustment on Esko Spark CDI 2530

Postby Tadeoski » Mon Aug 31, 2015 4:52 am

Still trying to solve problem dont suppose you have access to a service manual
Tadeoski
 
Posts: 8
Joined: Mon Jul 06, 2015 5:42 am


Return to Prepress

Who is online

Users browsing this forum: No registered users and 1 guest

cron