hickeyink · 04-26-2008, 10:22 PM

Ok, My printer has been doing this for sometime now, the first 8" of print comes out a lighter shade than the rest, its very wierd, and I cant figure it out, Heater not warming that spot? head speed slowing or something, it couldnt be the heads, I just havent got a clue why it would be doing this. It hasnt really bothered me until now becuase I have a print that I have to tile and the colour difference is very noticeable. This happened to anyone else.
Im running 4 heads on a 6 head machine, maybe I just bite the bullet and get the other 2 heads fixed.

eye4clr · 04-27-2008, 11:26 AM

is it a gradual difference or a hard line of change?

hickeyink · 04-28-2008, 06:56 PM

itsa a gradual difference

slangsc · 04-29-2008, 11:30 AM

Which part looks correct, the first 8" or after that?

hickeyink · 05-02-2008, 07:40 AM

good question, its only a slight difference, so how would you know which is meant to be correct or not?, you could say either, but i would say the its after that 8" becuase it is the majority of the print

eye4clr · 05-02-2008, 11:15 AM

try having your printer print some color stripes for a couple of inches before the print starts. Most RIPs have these available to be turned on side, both sides, or both sides and horizontally before the print.

If your RIP doesn't have this, look for it within your printer. Many have them there. This way the heads will fire for a while and purge/warmup before your print starts.

Worse case, print a black, 4 color bar before your actual job.

slangsc · 05-02-2008, 11:18 AM

That will get you printing, but doesn't necessarily fix a potential problem. It does sound like your heads aren't primed. Could be your dampers are leaking air.

hickeyink · 05-02-2008, 08:09 PM

dampers may be losing air or blocked, i have some ordered so ill get back once they come in, I have a whole range of things on order, dampers, cap tops, head, pump, the printers needs a good refurbish. ill check back after they are all changed and let you know.

hickeyink · 08-04-2008, 09:27 PM

Just tried, printing something i did a while ago and its still doing the same, changed black head, dampers on black and yellow heads, im out of ideas....

04-26-2008, 10:22 PM	#1
hickeyink Member Join Date: Nov 2007 Posts: 42 Printer: sc 540	1st 8" prints a different shade Urgent help Ok, My printer has been doing this for sometime now, the first 8" of print comes out a lighter shade than the rest, its very wierd, and I cant figure it out, Heater not warming that spot? head speed slowing or something, it couldnt be the heads, I just havent got a clue why it would be doing this. It hasnt really bothered me until now becuase I have a print that I have to tile and the colour difference is very noticeable. This happened to anyone else. Im running 4 heads on a 6 head machine, maybe I just bite the bullet and get the other 2 heads fixed.

04-27-2008, 11:26 AM	#2
eye4clr Super Moderator Join Date: Nov 2005 Location: San Diego Posts: 1,409 Printer: HP9000, HP45500, JV3, Onyx	is it a gradual difference or a hard line of change? __________________ -- Pacific Print Works "For every big problem there is a simple answer, and it's wrong." - Author unknown

04-29-2008, 11:30 AM	#4
slangsc Senior Member Join Date: Aug 2005 Location: Colorado Posts: 974 Printer: Roland SC-540 Pro II EX - Triangle MLD Bulk Ink	Which part looks correct, the first 8" or after that? __________________ Shane Chipp Digital Services Manager - PrePress & Web Design - Color Managed Workflows

05-02-2008, 11:15 AM	#6
eye4clr Super Moderator Join Date: Nov 2005 Location: San Diego Posts: 1,409 Printer: HP9000, HP45500, JV3, Onyx	try having your printer print some color stripes for a couple of inches before the print starts. Most RIPs have these available to be turned on side, both sides, or both sides and horizontally before the print. If your RIP doesn't have this, look for it within your printer. Many have them there. This way the heads will fire for a while and purge/warmup before your print starts. Worse case, print a black, 4 color bar before your actual job. __________________ -- Pacific Print Works "For every big problem there is a simple answer, and it's wrong." - Author unknown

05-02-2008, 11:18 AM	#7
slangsc Senior Member Join Date: Aug 2005 Location: Colorado Posts: 974 Printer: Roland SC-540 Pro II EX - Triangle MLD Bulk Ink	That will get you printing, but doesn't necessarily fix a potential problem. It does sound like your heads aren't primed. Could be your dampers are leaking air. __________________ Shane Chipp Digital Services Manager - PrePress & Web Design - Color Managed Workflows

04-28-2008, 06:56 PM	#3
hickeyink Member Join Date: Nov 2007 Posts: 42 Printer: sc 540	itsa a gradual difference

05-02-2008, 07:40 AM	#5
hickeyink Member Join Date: Nov 2007 Posts: 42 Printer: sc 540	good question, its only a slight difference, so how would you know which is meant to be correct or not?, you could say either, but i would say the its after that 8" becuase it is the majority of the print

05-02-2008, 08:09 PM	#8
hickeyink Member Join Date: Nov 2007 Posts: 42 Printer: sc 540	dampers may be losing air or blocked, i have some ordered so ill get back once they come in, I have a whole range of things on order, dampers, cap tops, head, pump, the printers needs a good refurbish. ill check back after they are all changed and let you know.

08-04-2008, 09:27 PM	#9
hickeyink Member Join Date: Nov 2007 Posts: 42 Printer: sc 540	Just tried, printing something i did a while ago and its still doing the same, changed black head, dampers on black and yellow heads, im out of ideas....

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