Pro 300 ink marks

[prgprinting]

I have a 6 month old Canon Pro 300.  I'm getting ink marks on the side edges of greeting card stock.  The marks are on both side edges of the paper, about 1/4" from the end of the paper.  It seems to get worse the more I print.  Any solutions?

[jrhoffman75]

Have you been doing borderless printing?

[prgprinting]

Yes on occasion.  

[jrhoffman75]

Borderless printing oversprays the paper to be sure the entire page is covered. There are sponges to collect the ink. Using a lint-free cloth gently wipe off the sponge area below where the print head travels.

[prgprinting]

Thank you.