BN-20 dripping ink when performing perf/contour cut

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pixel
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BN-20 dripping ink when performing perf/contour cut

Post by pixel » Thu Dec 14, 2017 9:56 am

Hello,

I don´t know if this has ever been tested by Roland but it really drives me nuts.
I print a 100x50cm sheet (paper) and after that I perform a perf and a contour cut.
The printer is ALWAYS dripping ink on the paper while performing the cuts and destroys the print with that.

This happens after the printer did a pumping clycle while cutting.
Is there any way to prevent this?

It is not a cap or wiper issues. It even happens if they are new and replaced.

thanks, pixel

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mrtn
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Re: BN-20 dripping ink when performing perf/contour cut

Post by mrtn » Thu Dec 14, 2017 11:22 am

9 out of 10 cases it's dirt somewhere in the print carriage.
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pixel
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Re: BN-20 dripping ink when performing perf/contour cut

Post by pixel » Fri Dec 15, 2017 8:15 am

It isn´t smearing, it is dripping but I think I found the problem. There is some dried ink on the metal block right of the print head and I guess that is moving over the capping station during the print, catching some ink that drops from it then.

Sadly this area can´t be cleaned from the manual cleaning position so I guess I have to open the case to a access it at the right side.

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Re: BN-20 dripping ink when performing perf/contour cut

Post by mrtn » Fri Dec 15, 2017 10:18 am

Correct, but not only that, it also collects ink mist from the air around the print head and once the critical mass is achieved the ink drips on the media. This is when there are random and rare drips. Frequent dripping means a physical contact.
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Re: BN-20 dripping ink when performing perf/contour cut

Post by pixel » Tue Dec 19, 2017 9:48 am

Yes I noticed that too. But have no idea yet how to prevent it from collecting ink there. Cleaning that section is a pain.
The BN-20 isn´t really what I´d call a well engineered product.

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Re: BN-20 dripping ink when performing perf/contour cut

Post by mrtn » Tue Dec 19, 2017 3:26 pm

BN-20's space limitation comes from the market designation - it's intended to fit on a normal desktop next to your computer. So the cleaning part is really crammed.
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Re: BN-20 dripping ink when performing perf/contour cut

Post by pixel » Wed Dec 20, 2017 8:54 am

It isn´t just the cleaning part.

- no light inside (simply 3-4 LED would have done this)
- waste tank just designed to make money, economical horror, stupid position
- terrible access to the capping station
- no material feed buttons
- no access to the right side of the head even though just 2-3cm more would have solved that
and these 2-3 cm are no problem, really!
- no markers for the transport wheels
- no ink shaking mechanism, a simple stepper motor could have done this, maybe even a vibration motor

If you need to change the material often the insertion is a pain.
I don´t even want to mention the software, this is an all-time Roland problem. It is just the minimum you´d expect to get.
A good software could get much more out of this printer.

Luckily some of these things can be modded quite easily but honestly Roland could and would do better if there´d be any competition.

So guess ;-)

Am I happy with it? No. Would I buy it again or recommend it? No.

Apart from that the ink level sensors didn´t work on my one since the beginning and the service gave up to fix it remotely. I have to admit that I refused to send the thing back because I required it to do its work. So the sensors still don´t work but I don´t care about that, it is just an anecdote that adds the sugar to the top of the problems ;-)

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Re: BN-20 dripping ink when performing perf/contour cut

Post by robbo78 » Wed Feb 14, 2018 3:06 pm

Hi, did you solve this? I'm having the exact same issue. It only does it while cutting, it sounds like it pumps the ink but then doesn't wipe it off the head so a drip forms which then catches the media and leaves a trail of black ink all over the design I've just printed.

It's quite annoying. It's only just started happening in the last week and I have performed many manual cleans to solve it to no avail. I'm thinking a master reset of the printer maybe?

Hope someone can help.

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Re: BN-20 dripping ink when performing perf/contour cut

Post by mrtn » Wed Feb 14, 2018 6:04 pm

No master reset please!

It's either dirt or you have installed the wiper the wrong way or wrong (felt) slot.
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Re: BN-20 dripping ink when performing perf/contour cut

Post by robbo78 » Wed Feb 14, 2018 6:46 pm

Hi, it's a new machine only had it since December so I haven't changed the wipers yet. I don't understand how dirt can cause it, the nozzle check prints perfectly. Where is the dirt likely to be that is causing this?

I have been watching the head as it returns to the pot half way through. The printer makes the clicking noise which I presume is pumping ink maybe? Anyway it doesn't sit in the pot when it does this which is surely the reason the ink is forming in drips on the head?

It's almost like its starting to perform a clean half way through cutting but doesn't finish the process and leaves the head with dripping ink instead of wiping it off first before continuing to cut.

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