Roller offset issues on c&p

The 15”x22” C&P at my studio works great, but I’m getting offset inking at times. (I attached a picture of my setup.) I disengaged the ink disk in order to do the gradient, and I assume this has a lot to do with it. But I also noticed it with some of my larger blocks that used flat colors.

I’ll upload a picture of the issue once I’m able to get a good shot of it.

Any idea why this may be happening?

image: IMG_0810.JPG

IMG_0810.JPG

Log in to reply   5 replies so far

Running split fountain on a platen without having rider rollers is an exercise in frustration—requiring printing on alternate impressions, or other means to even out the ink laydown. You may also want to use oscillating rollers, but you will tend to have a wider “blend” band at the middle.

saucewaffle, Offset or Set off is when ink offsets to the back
of the sheet on top of it. It happens in the stack of freshly print paper. So do you mean poor inking on the form?

I’m guessing the issue is ghosting, not offset? Either way I would try double or triple rolling before making an impression.

If you haven’t already done this, I would roll the rollers over the form slowly by hand and check to see the image ghost of the form in the ink on each roller. If only one roller is making contact that might make it harder for good inking on each pass and indicate roller or truck issues that could be resolved.

Or maybe the spring that keeps the rollers firm against their rails? maybe tired, or broken, I have had this.
And a little more info would be helpful, you say ”offset inking’
do you mean on the back of the sheet? Is it happening because you are staking wet prints too high? try laying out in rows on a board, slows you down I know, but saves heartache.