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Author Topic: Head strikes on ipf8300  (Read 878 times)
wildstork
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« on: August 03, 2013, 04:16:28 PM »
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I replaced both print heads on my ipf8300 last week.  Nozzle check was perfect.  Several large prints were made and all was well.

Today I've been getting head strikes with either sheet paper or roll paper.  Crane Museo Max 255 gsm has never caused head strikes nor has Breathing color Optica One 300 gsm roll paper. 

The printer is striking the edges of the paper and sometimes the center at the beginning of a print.  Black lines are resulting in the margins and at the top center of the print regards of which fine art paper I'm using.  I've never experienced this before and wonder if anyone knows how to correct this?   

Image attached:
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Scott Martin
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« Reply #1 on: August 03, 2013, 05:07:45 PM »
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Have you cranked up the vacuum suction setting all the way for that media type?

And you're not using 'Max No of passes' are you?

You can set the head height higher for that media type if you really need to but I hope you aren't having a hardware suction problem going on...
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wildstork
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« Reply #2 on: August 03, 2013, 08:51:03 PM »
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Thanks Scott.
The suction is at maximum as is the head height.  I've printed with these same papers for years and this has never happened so it has to be something independent of head height or suction.  I'm wondering if a scrap of paper is lodged under the print head and is loaded with ink?  I don't know what else it could be.
I am using the "Highest" setting... though not the "Highest" (Max number of passes) setting.
Is there a way to release the print head so I can move it to the center and check to see if there's a piece of debris under the head?  I checked the Canon wiki website and there's nothing there... nor is there anything in the Canon manual.

Lawrence
« Last Edit: August 03, 2013, 08:55:55 PM by wildstork » Logged
Scott Martin
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« Reply #3 on: August 03, 2013, 09:48:57 PM »
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The suction is at maximum as is the head height.  I've printed with these same papers for years and this has never happened so it has to be something independent of head height or suction.  

Are you sure the suction is working properly? Is it holding the paper down in the platen area? If you've been doing this for years and are suddenly getting this I'm wondering what has suddenly changed or broken.

Is there a way to release the print head so I can move it to the center and check to see if there's a piece of debris under the head? 

Do a 'change cutter blade' function to get at the carriage assembly.

I checked the Canon wiki website and there's nothing there... nor is there anything in the Canon manual.

The wiki is THE place to be for iPF stuff. This exact thing has been discussed over and over again in great detail. Give it another shot.

Also, when you place the cut sheet on a table, does it lie completely flat?
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wildstork
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« Reply #4 on: August 03, 2013, 10:58:19 PM »
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Scott,
I have no way of knowing if the suction is working properly.  It has always worked great until today.  I'm also wondering what has changed.

Thanks for the "change cutter blade" advice to move the head.  I wasn't sure how to go about moving the head so this will help.

The cut sheets that were head struck do lie flat.  Again... I've never experienced this before with even roll paper that was cut into sheets.  This has me baffled.

I'll check the Canon wiki again.

Thanks,
Lawrence
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aaronchan
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« Reply #5 on: August 04, 2013, 10:41:01 AM »
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open up the front cover, use some tissue paper and place them into the front cover sensor to let it print when the cover is opened. see if the paper are really laying flat during the printing. And to see if there's any other award thing going on while the print head moves.

aaron
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Roscolo
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« Reply #6 on: August 05, 2013, 02:46:16 PM »
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I think I had a similar issue. Unfortunately I don't remember exactly what I did, but in the menu there is Print Head Adjustment, or Calibration, again, I don't remember, but it took about 20 minutes to make a pretty big print and do the adjustment and then all was well again.

I think it's Adjust Printer, then Head Position Adjustment, then Auto.
« Last Edit: August 05, 2013, 02:47:59 PM by Roscolo » Logged
wildstork
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« Reply #7 on: August 05, 2013, 03:27:27 PM »
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Thanks for the advice.
I'll call Canon today and see what they suggest.

Lawrence
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