Light Grid of Dots of Printing Lightroom

[Millerrolllins]

I have a printing problem with several images -- there is a light, barely discernable, square grid pattern of small black dots on the prints.  On one print the grid lines are about 3/8" apart and on another about 5/8", both on 8 x 12" images.  The images are TIFs that I created by exporting them to Photoshop for some work and then back to Lightroom.  However, when I print the same images in Photoshop there is no grid.  This does not happen with all my Lightroom to Photoshop and back TIFs.  I have no idea what might be going on. I using a Canon Pixma 100 printer in color. I can't see the grids in Lightroom (or Photoshop), but they show up on the Pixma preview screen.

[Millerrolllins]

Looking closer I can see that the grids are not black dots, just darker lines of the same color in that area of the photograph.

[GoldingD]

Are you using an icc profile?

[Millerrolllins]

In the printer driver, I've selected Photo Printing and Matte Photo Paper, but I don't think this constitutes an icc profile perse. It's not specific to the paper I'm using.

Michael




http://www.michaelpagemillerphotography.com/ - A Cabinet of Curiosities, Jazz Fest, Walls and Spray Paint, and more new stuff.

[Millerrolllins]

Here are two samples prints.  I've emphasized the grid lines which are otherwise very faint and hard to see unless you are holding the actual print in your hand.