I have an unusual issue with black ink on our Colorspan 72UVX. It appears that black ink is leaking into the carriage, but I'm not sure what is causing it or how I can fix the problem.
A couple months ago, in the middle of a print, our Colorspan 72UVX quit putting out black ink. We printed prime bars afterwards to find that almost all of the jets were not firing (each head showed only a few). I called HP and spoke to a tech, and ultimately scheduled to have someone visit on site (something we were planning to do anyway just for a check up and to look into unrelated issues).
Oddly enough, just a day or two before the on site visit (a weekend had passed without using the printer), the black ink mysteriously reappeared. I spoke to the tech about the problem, but we were not able to find anything wrong at the time.
The black continued to perform as expected until a couple of weeks ago when it disappeared again without warning. Then, the next morning it was back again. And last week it vanished and came back, again. Now, I'm once again without black ink (and I fully expect it to reappear soon), and I'm not sure what is causing this problem.
Today, I noticed that there is wet black ink inside the carriage. Some of the ink is covering one of the ribbon wires and more has settled along the bottom of the carriage. Has anyone had a similar situation or have any suggestions on fixing the problem?
The black print heads have not been replaced, but all four reservoirs on the print heads were replaced late last year/early this year (we replaced 12 reservoirs, and all 4 cyan print heads within the last two years).
A couple months ago, in the middle of a print, our Colorspan 72UVX quit putting out black ink. We printed prime bars afterwards to find that almost all of the jets were not firing (each head showed only a few). I called HP and spoke to a tech, and ultimately scheduled to have someone visit on site (something we were planning to do anyway just for a check up and to look into unrelated issues).
Oddly enough, just a day or two before the on site visit (a weekend had passed without using the printer), the black ink mysteriously reappeared. I spoke to the tech about the problem, but we were not able to find anything wrong at the time.
The black continued to perform as expected until a couple of weeks ago when it disappeared again without warning. Then, the next morning it was back again. And last week it vanished and came back, again. Now, I'm once again without black ink (and I fully expect it to reappear soon), and I'm not sure what is causing this problem.
Today, I noticed that there is wet black ink inside the carriage. Some of the ink is covering one of the ribbon wires and more has settled along the bottom of the carriage. Has anyone had a similar situation or have any suggestions on fixing the problem?
The black print heads have not been replaced, but all four reservoirs on the print heads were replaced late last year/early this year (we replaced 12 reservoirs, and all 4 cyan print heads within the last two years).
