FLSignMan · 12-08-2007, 10:19 AM

Hi guys,

After much research and debate, we recently decided to purchase a ColorSpan 5465. The unit was installed last month, and so far, the machine has been great.

One thing that we continue to fine tune is the head height for printing coro. Given the imperfect nature of a 4x8 sheet of coro, we have set the head height on our coro profile to 0.105. Occasionally we have a slight "shadowing" effect (overspray) on areas going from solid color to the white coro. We originally set our coro head height to 0.12 to take the possibility of a head strike as far out of the equation as possible. The shadowing effect was greatly reduced by lowering the head height, but I was curious to get feedback on what other 5400 owners have tried in regards to head height.

As always, thanks for your help!

SignPainter · 12-08-2007, 11:49 AM

I'm happy to hear that your machine has been performing well! My 5465 was delivered yesterday and will be installed in a week or so. I'm very interested to see what responses you get!

How does your machine do on roll stock? Do you even use it for roll stock?

FLSignMan · 12-10-2007, 09:16 PM

Congrats on your purchase.

Our ColorSpan tech was very knowledgeable and really did an excellent job explaining the in's and out's of the machine - I'm sure that you'll have a similar experience.

Our ColorSpan is currently devoted to rigid substrates, but I'm sure that we'll begin experimenting soon.

Let us know how your install goes..... Good luck!

ktdot · 12-16-2007, 03:10 AM

I think static is also causing the "shadowing" overspraying.
You need to reduce the static on the media by wiping with an anti-static spray. It will help but wont get rid of the overspaying totally. Reducing the heading will help because there is less distance from head to media hence less misdirected spray.

Machine · 04-17-2008, 12:43 PM

Hi everybody, this is my first post.
From my experience the fume you're describing could be caused by either too much head gap, static electricity, and it's possible that an air flow near the machine may influence your results at that high of a head gap (i've seen this with a head gap greater than 3 mm, which is equivalent to .12 ".

Static electricity can be controlled with a static bar. www.takk.com have good ones. Static spray never worked for me.

Otherwise it's strongly possible that your bidirectional adjustment is the culprit.

12-08-2007, 10:19 AM	#1
FLSignMan Junior Member Join Date: Oct 2007 Posts: 7 Printer: Roland SolJET Pro III XC-540	Head Height For Printing Coro? Hi guys, After much research and debate, we recently decided to purchase a ColorSpan 5465. The unit was installed last month, and so far, the machine has been great. One thing that we continue to fine tune is the head height for printing coro. Given the imperfect nature of a 4x8 sheet of coro, we have set the head height on our coro profile to 0.105. Occasionally we have a slight "shadowing" effect (overspray) on areas going from solid color to the white coro. We originally set our coro head height to 0.12 to take the possibility of a head strike as far out of the equation as possible. The shadowing effect was greatly reduced by lowering the head height, but I was curious to get feedback on what other 5400 owners have tried in regards to head height. As always, thanks for your help!

12-08-2007, 11:49 AM	#2
SignPainter Junior Member Join Date: Nov 2007 Posts: 3 Printer: Mimaki JV3, HP 5000, Colorspan 5465	Colorspan 5465 I'm happy to hear that your machine has been performing well! My 5465 was delivered yesterday and will be installed in a week or so. I'm very interested to see what responses you get! How does your machine do on roll stock? Do you even use it for roll stock?

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12-10-2007, 09:16 PM	#3
FLSignMan Junior Member Join Date: Oct 2007 Posts: 7 Printer: Roland SolJET Pro III XC-540	Congrats on your purchase. Our ColorSpan tech was very knowledgeable and really did an excellent job explaining the in's and out's of the machine - I'm sure that you'll have a similar experience. Our ColorSpan is currently devoted to rigid substrates, but I'm sure that we'll begin experimenting soon. Let us know how your install goes..... Good luck!

12-16-2007, 03:10 AM	#4
ktdot Junior Member Join Date: Oct 2007 Posts: 3 Printer: colorspan uv5400	I think static is also causing the "shadowing" overspraying. You need to reduce the static on the media by wiping with an anti-static spray. It will help but wont get rid of the overspaying totally. Reducing the heading will help because there is less distance from head to media hence less misdirected spray.

04-17-2008, 12:43 PM	#5
Machine Junior Member Join Date: Apr 2008 Location: Quebec, Canada Posts: 9 Printer: Mimaki JV5,Agfa Anapurna M, Seiko Colorpainter 64S	Hi everybody, this is my first post. From my experience the fume you're describing could be caused by either too much head gap, static electricity, and it's possible that an air flow near the machine may influence your results at that high of a head gap (i've seen this with a head gap greater than 3 mm, which is equivalent to .12 ". Static electricity can be controlled with a static bar. www.takk.com have good ones. Static spray never worked for me. Otherwise it's strongly possible that your bidirectional adjustment is the culprit.

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