发明授权
US3931458A Method and apparatus for engraving elemental areas of controlled volume on a printing surface with an energy beam 失效
在具有能量束的印刷表面上雕刻受控体积的元素区域的方法和装置

Method and apparatus for engraving elemental areas of controlled volume
on a printing surface with an energy beam
摘要:
Method and apparatus for engraving the cells of a printing surface to a controlled amount by controlling the spatial distribution and time duration of the trajectory of an energy beam having a cross-section smaller than the cell to be engraved thereby.
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