Question Mimaki CG-130FXII Not Contour Cutting Properly

After you print the graphic place small pieces of Scotch Magic Tape over each of the marks. Make sure it is the frosted looking (Magic) tape as this reduces the light scatter and helps the plotter see the marks more accurately. If this does not work you may need a voltage adjustment made to the sensor on the plotter but if it is working fine with regular vinyl the Magic Tape should square you away.

 

Try slowing down the speed to 5 cm/sec and see what happens. Also this can happen if the rollers are starting to stiffen up. We have found it is good to replace them every few years. The stiff rubber allows the graphic to slip a little while plotting. Make sure you take a wire brush to the grit rollers from time to time to remove old pieces of vinyl and adhesive. This can help as well.

 

We put a piece of premask (application) tape over the registration marks and redraw them with a Sharpie pen when the sensor can't read them.

Unfortunately the problem with the cutting going off is due to the media bulging and shifting as the cutting progresses, as well as skew that happens as the material goes forward and back through the machine. Slipping pinch rollers can cause this but it will happen with a brand new plotter as well. Pay attention to where the vinyl goes entering and exiting the front and back of the plotter, and what it bangs into on the way. Make it as smooth as possible. And slowing the plotter helps as well. Finally, reduce the number of objects to be cut in a batch so that the length of material is less than 2 or 3 feet, if that's possible.