M.A.C. · 07-09-2008, 12:36 PM

So I am getting horizontal banding in my blacks. The banding appears to be light banding, and not dark banding. I assume I set my black restrictions/advanced limits in onyx too low.

Does this mean I need to go back and completely redo my profile?

FWIW, I tried using total ink limits of 280, and 400 on this profile and had the same issue with both

M.A.C. · 07-09-2008, 12:37 PM

Also, If my total ink limit was too low, then why wouldn't it just look like light black everywhere instead of light/dark banding?

M.A.C. · 07-09-2008, 01:18 PM

Ok, so the banding in question in on our canvas (all of wich gets laminated). Anyways, we decided to laminate our roll of print anyways because we figure some of the prints would still be ok. It seems the banding totally disappears during lamination???

Now I am questioning if it is worth going back and increasing my black restrictions since all of our canvas printing gets laminated anyways. My new profile has 5% larger gamut volume while using farrrrr less ink. I guess the banding is acceptable?

eye4clr · 07-09-2008, 02:58 PM

I'll wager it's a printer or heat problem, not the profile directly.

M.A.C. · 07-10-2008, 12:27 PM

No heaters. But I wonder what problem with the printer could cause this.

All new heads too.

M.A.C. · 07-23-2008, 02:05 PM

Could this black banding be a result of bi-directional printing and the order in which the printer is laying down ink?

Perhaps I should only be using single direction printing for best results?

M.A.C. · 07-23-2008, 02:06 PM

The bands obviously seem to be the same length apart as the printhead passes btw.

eye4clr · 07-23-2008, 02:07 PM

uni-directional is a good test. But your printers control the step adjust (feed rate) and it could easily be off. See if there is something onboard to automatically or manually calibrate the feed.

M.A.C. · 07-23-2008, 02:39 PM

yea, it automatically corrects the feed any time media is loaded.

blah.

eye4clr · 07-23-2008, 06:09 PM

so it actually prints something out and measures it?

07-09-2008, 12:36 PM	#1
M.A.C. Senior Member Join Date: Nov 2007 Posts: 105 Printer: HP Z6100, HP Z2100	New Profile is great.....except for black banding So I am getting horizontal banding in my blacks. The banding appears to be light banding, and not dark banding. I assume I set my black restrictions/advanced limits in onyx too low. Does this mean I need to go back and completely redo my profile? FWIW, I tried using total ink limits of 280, and 400 on this profile and had the same issue with both

07-09-2008, 02:58 PM	#4
eye4clr Super Moderator Join Date: Nov 2005 Location: San Diego Posts: 1,409 Printer: HP9000, HP45500, JV3, Onyx	I'll wager it's a printer or heat problem, not the profile directly. __________________ -- Pacific Print Works "For every big problem there is a simple answer, and it's wrong." - Author unknown

07-23-2008, 02:07 PM	#8
eye4clr Super Moderator Join Date: Nov 2005 Location: San Diego Posts: 1,409 Printer: HP9000, HP45500, JV3, Onyx	uni-directional is a good test. But your printers control the step adjust (feed rate) and it could easily be off. See if there is something onboard to automatically or manually calibrate the feed. __________________ -- Pacific Print Works "For every big problem there is a simple answer, and it's wrong." - Author unknown

07-23-2008, 06:09 PM	#10
eye4clr Super Moderator Join Date: Nov 2005 Location: San Diego Posts: 1,409 Printer: HP9000, HP45500, JV3, Onyx	so it actually prints something out and measures it? __________________ -- Pacific Print Works "For every big problem there is a simple answer, and it's wrong." - Author unknown

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07-09-2008, 12:37 PM	#2
M.A.C. Senior Member Join Date: Nov 2007 Posts: 105 Printer: HP Z6100, HP Z2100	Also, If my total ink limit was too low, then why wouldn't it just look like light black everywhere instead of light/dark banding?

07-09-2008, 01:18 PM	#3
M.A.C. Senior Member Join Date: Nov 2007 Posts: 105 Printer: HP Z6100, HP Z2100	Ok, so the banding in question in on our canvas (all of wich gets laminated). Anyways, we decided to laminate our roll of print anyways because we figure some of the prints would still be ok. It seems the banding totally disappears during lamination??? Now I am questioning if it is worth going back and increasing my black restrictions since all of our canvas printing gets laminated anyways. My new profile has 5% larger gamut volume while using farrrrr less ink. I guess the banding is acceptable?

07-10-2008, 12:27 PM	#5
M.A.C. Senior Member Join Date: Nov 2007 Posts: 105 Printer: HP Z6100, HP Z2100	No heaters. But I wonder what problem with the printer could cause this. All new heads too.

07-23-2008, 02:05 PM	#6
M.A.C. Senior Member Join Date: Nov 2007 Posts: 105 Printer: HP Z6100, HP Z2100	Could this black banding be a result of bi-directional printing and the order in which the printer is laying down ink? Perhaps I should only be using single direction printing for best results?

07-23-2008, 02:06 PM	#7
M.A.C. Senior Member Join Date: Nov 2007 Posts: 105 Printer: HP Z6100, HP Z2100	The bands obviously seem to be the same length apart as the printhead passes btw.

07-23-2008, 02:39 PM	#9
M.A.C. Senior Member Join Date: Nov 2007 Posts: 105 Printer: HP Z6100, HP Z2100	yea, it automatically corrects the feed any time media is loaded. blah.

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