By "fringe leaf" I assume you mean what is usually referred to as a dissectum. These have feathery, deeply divided leaf lobes.

Japanese Maple seed should be collected in the fall when the "wings" start to turn brown. Soak the seeds in warm water for 24 hours, then place them inbetween damp (not wet) paper towels and store in a zip lock bag in the fridge. Each month change out the paper towels to prevent mold. The seeds must be refrigerated for 4 months (this is called "stratification". Then you will start to see little white roots pushing their way out of the seed casing. It looks like a little white finger sticking out. At this stage remove them from the fridge and pot them up 1/4" deep in fine potting soil. Keep them moist, but not wet, in a shady spot outside. It will take 2 to 3 years for the plants to become big enough to really tell what they will look like as adult plants. Do not expect them to look just like the parent plant. Dissectums often yield seedlings that have no dissection in the leaves at all. But its really fun to do this, so enjoy and good luck!

Thanks,I was told that's what it was called,a fringe leaf.The leafs look like the one at the top of this forum.That's what I do with my Blood Good maple seeds,some always start to germinate before I take them out of the zip lock bag.