CJ-500 print head banding

[Chris Wool]

just thinking out loud
have you left it in overprint mode some people use that mode on canvas.
fluff etc left on capping station so the pump cant suck the excess ink away
over filed ink tanks

chris

[Peter Yip]

Hi Chris

many thanks for your feedback, no i have never used the over print mode before, the capping station was actually replaced 3 months ago, the printer has not been that heavy use, i did had a good look at that and it does look pretty good still.

it just puzzle me about the banding while the print head nozzle check came out fine, and i did check all head aligment, bi-directional adjustment and the media is feeding correctly.

guess i might just give up and try to put a new print head and see. thats £100 and an hr given away ……

regards
Peter

[Chris Wool]

you say over inking, profile altered or material change, picked the wrong profile when you changed back. 1400dpi mode on a 360 profile

if the print test shows as perfect i would be tempted to look elsewhere.
try a different roll of vinyl.

chris

[Peter Yip]

hmm thats a good suggestion, i shall try with a new roll

regards
Peter

[Peter Yip]

still no luck with this, although rise the print head to position 2 seems to have just about work. manage to get 1 image printed but then the rest is just the same ….

tried to call Roland for a bit of technical help, so i am still waiting for them to return the call…

regards
Peter

[Peter Yip]

right, just some updates.

after a lot of re-calibration of the print head i somehow manage to get it printing consistantly on photo mode however all other mode still remain the same.

the guy at roland is scratching their head hard too ….

well if there is any engineering near north london / watford area i wouldnt mind getting them in to have a look and do some calibration.

regards
Peter

[Peter Yip]

right after 4 days of head banging and countless amount of call to various technical people in Roland as well as specialist i have finally solve the problem.

the problem turn out to be the media does not support pigment ink. even though we had been using the same Kodak paper in the pass 2 years without any trouble, only when one of the print specialist from Roland suggest that maybe it was the media. (although we had try with 2 different roll of the same media, one of which was even brand new un-open) so i went out and got a different kodak photo paper locally and it works perfectly again.

this must be one of the strangest thing ever happened, well at least now i know …..

i must say many thanks for the tech support team from Roland and they have been very helpful in the pass few days so countless of call and time spent looking into this.

guess its time for christmas and i better put my legs up and chill for once.

thanks again for all the members feedback and help as usual. wish you all a happy christmas

regards
Peter

[Chris Wool]

wish you had said paper and pigmented water based ink, silly me thought it was solvent and vinyl. forgot the cj was water based.
yes pigmented on to dye paper does pool over ink etc.
there are universal papers that accept dye and pigmented inks,
AIT do quicksilver the photo satin is very nice. use it in my epson

chris

[Peter Yip]

sorry maybe i should have stated more clearly, knowing most people here work on solvent printers .. (although i do wish i can justify upgrading sometimes )

it is very odd as we have been using the very same media and pigment ink over the last 2 years, and after some what 30 odd roll of media it suddently decided not to take the pigment ink !!!

many thanks for the suggestion Chris, i shall have a look into those media, always nice to know some alternatively choice.

regards
Peter

[Chris Wool]

i could never understand why the back of the paper was never marked, to show what the paper was, it was not unknown to be wrongly boxed or labeled.

chris