Seiko print head problem

[Signbart]

Hi all,

We have a problem with two of the print head on our Seiko 64s. The D/Magenta has blocked nozels and the D/Cyan seems to block if we don't print in an hour or so. One engineer has referred to this as 'drops out a lot'. Cleaning clears the problem with the D/Cy but not the D/M.

Mike

 

[Jet Fast Printing]

Do you leave your dryer on all the time? We used to and would have problems like that all the time.

 

[Jack Knight1979]

what ink are you using?

 

[Signbart]

We do leave our heaters on but the printer controls their heat, cooling after printing.

We use genuine inks on the printer.

Mike

 

[Jet Fast Printing]

We do leave our heaters on but the printer controls their heat, cooling after printing.

We use genuine inks on the printer.

Mike

I was asking about the dryer that you roll up to the printer, It was an option with the machine.

 

[miltondavis]

Might be a faulty pump or clogged damper? Have you soaked the capping station with caping fluid overnight- that doesnt always work but a recommendation seiko always gave me in the past. Have you done a pm kit lately, I just did one, it was costly but well worth it, i still have some minor drop out issues but not as bad as before the update to all the pumps and new capping station.

 

[MachServTech]

Please post a nozzle check pattern so I can see how the nozzle failure is distributed. The second piece of info that would be helpful is: does the nozzle pattern change if you performed the test again after a strong cleaning, some nozzles coming back while others dropping out?
IF this is the case then I would suspect a failed O ring in the line connecting the printhead to the damper.

 

[Signbart]

I'll do the test print and post it or could email it. The nozzle pattern does change on the D/C after a strong clean.

We don't have the extra heater on our machine

 

[Signbart]

Hi All, Sorry for not getting back to you all sooner but our problem has now been sorted. It was all because of poor ink. We have now changed to a product from Sun Chem and all our problems have been corrected.

Thank you

 

[d fleming]

Bingo, especially the magentas. Seiko oem ink has had this problem since about August. They'll be glad to charge you a few grand to send calgraph to come fix it though, you'll never get them to admit their oem ink has damaged your machine.