2 things being talked about here.
A ponce is a bag of chalk, which is a traditional way to transfer a pattern through a template that has holes in it. It may be used for applique or quilting patterns.
There are several different things you can do with a printer to assist in quilting. You can print or copy a pattern, such as a paper piecing pattern. Light weight paper works best for this because it tears off easily. Many people print their quilting patterns, sewing through the paper, and again, tearing it off when they are done.
What I was talking about is a product called BubbleJet. You wash your fabric, soak it in the BubbleJet liquid, hang it to dry, iron it to a piece of freezer paper, trim to 8.5x11, and print directly on the fabric, thus creating anything from a label to a cloth picture of your grandmother to use in your quilt. Be sure to check the permanence of your ink before you put a quilt together this way.
Where I live, there is a T shirt company that will take your photos and print them on your good quality cloth. I'm told it is more stable than BubbleJet printing, but it leaves a plastic feel to the fabric.
There are also a variety of rather pricey pruducts on the market which are fabric pieces (on freezer paper) already prepared for your printer. They vary a lot in cost, stability and fabric quality. Some can't be washed at all.