Roland MPX-50 - Manual (Page 7)

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Part 1 What to Do Before Marking
What's Metaza?
Metaza (the MPX-50) is a metal printer.
It can mark photographs, drawings, text, and the like on the surfaces of flat metal and plastic. For more information about materials that
can be marked, see Part 2, "1-1 Preparing the Workpiece for Marking."
How Metaza Works
Metaza uses a diamond tipped stylus to mark the surface of metal or plastic, creating intricate depressions.
The size of the depressions is varied by controlling the marking force, making it possible to express light and dark areas of the image.
This is exactly analogous to the way a monochrome printer expresses light and dark area by varying the size and arrangement of dots.
Printer
METAZA (MPX-50)
If the marking force is not varied according to the hardness of the metal, different marking results will be obtained for the same image.
However,there is no need to make troublesome settings.
Just use the included Windows driver and choose the composition of the material you want to mark.
Choosing the composition automatically selects the a suitable marking force for the material.
Even when the composition is the same, strength may vary if the casting method or post-machining method is changed. In such cases,
make fine adjustments in the the marking force. (You can save the adjustment results in a file.)