Mike Chaney's Tech Corner

Mike's Software => Qimage Ultimate => Topic started by: Canvas Print Studio on February 09, 2015, 11:32:57 PM



Title: Ink being dumped in Borderless printing ink grooves
Post by: Canvas Print Studio on February 09, 2015, 11:32:57 PM
I'm using qimage Ultimate with a canon IPF9000 on Windows 8.1. I had a tech come out to look at the printer and he said it was software issue not a printer hardware issue.

What the problem is...

Printing on matt canvas. The printer keeps running past the canvas and putting excess ink in the Borderless printing ink grooves. The tech said it might be that printer thinking the page is larger than it is. The printer is recognizing the right size when I load it.

I'm setting the page to custom size. so if I have a 24 inch roll. I make the page 24 inch and the length of what the print needs to be.

Hope the attached Pic helps to explain the situation


Title: Re: Ink being dumped in Borderless printing ink grooves
Post by: Geraldo Garcia on February 10, 2015, 03:11:56 AM
Well...

If your printed canvas (from that screengrab) was printed as expected with that large white border with no distortion or cropping, I cannot see how the printer/software would be doing something wrong and dumping ink beyond the canvas.

What I can tell you from my experience with IPF printers is that the vacuum draws the ink vapors from the overspray through those holes, so the holes immediately beside the borders of the most used width can get dirty and wet with ink very quickly and should be cleaned periodically (2 or 3 times a week on my case).

That is normal behavior.


Title: Re: Ink being dumped in Borderless printing ink grooves
Post by: Canvas Print Studio on February 10, 2015, 02:10:43 PM
Thank you for responding. I have one thing to try tomorrow, form so other feedback regarding the page setup.

I'll post if I have success.


Title: Re: Ink being dumped in Borderless printing ink grooves
Post by: admin on February 14, 2015, 02:31:46 AM
One thing I can suggest right off the bat: accurately measure the actual width of your roll!  If your page width is defined as 24 inches and the paper is really 23 and 7/8 inches, you'll have more borderless overspray than you expect.  Note that you'll always have some overspray if expansion is enabled in the driver when you are printing borderless: that's by design (by the printer/driver not Qimage).  You can't get a true borderless print without some overspray past the edges of the paper because paper loading mechanisms are not accurate enough to get true borderless without the head printing slightly past the edges.  That said, I've encountered rolls cut shorter than their advertised width more often than I would expect.  Even with some sheet papers, I've had users report that they measure the paper and it's a bit short on one side.

One thing is for certain, however: this cannot be a QU problem (or any printing software problem for that matter).  QU, like any software that uses your Canon driver, is bound by the specifications of the driver.  So if QU is printing past the page, the driver is telling it to.

Regards,
Mike


Title: Re: Ink being dumped in Borderless printing ink grooves
Post by: Canvas Print Studio on February 18, 2015, 06:08:16 AM
okay so I've had some success... With the 17 inch roll I reduced the actual size of the page size instead of telling it that the page size is 17inch, I reduced it by 10mm. For that print it didn't matter. Will try again without reducing to see if it goes back to it.

Just did this on a 44inch roll and didn't help.

I've disabled borderless overspray and expansion in print and page formatting in qimage (would that help)

The roll size is spot on, if anything slightly bigger than 44 but like a few ml..


Anymore suggestions with what driver settings it could be?


Title: Re: Ink being dumped in Borderless printing ink grooves
Post by: Canvas Print Studio on April 13, 2015, 12:50:20 AM
Hey Mike would it matter if the roll size is larger? For instance the 44 inch is bigger 1/16. What setting would I change to see in qimage or driver settings?

Cheers,

Tom


Title: Re: Ink being dumped in Borderless printing ink grooves
Post by: Geraldo Garcia on April 19, 2015, 06:53:41 PM
Tom,

Are your prints coming out OK or are they wrong/cropped in any way (as if the printer was trying to print beyond the width of the canvas/paper)?

If I got you right I believe your prints are ok and you are concerned about the ink excess you see on the printer's plate beyond the width of the media. If that is the case, there is nothing wrong with your printer or software, but there may be something wrong with your technician.

Canon IPF large format printers use vacuum suction to keep media in place and the air flow is specially strong in the holes just beyond the width of the media. That airflow sucks the mist generated during printing and the adjacent holes on the plate get full of ink quite quickly (I clean my printer's plate every other day because of that). At first it looks like the printer is dumping ink beyond the media, but it is actually a side-effect of the vacuum. Nothing to worry about, just clean it when you notice it is dirty.