Title: Method and apparatus for engraving elemental areas of controlled volume on a printing surface with an energy beam

Abstract: 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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Inventors: Dini, Mamiliano (Brescia, IT)

Application Number: 391255
Filing Date: 1973-08-24
Publication_date: 1976-01-06
Assignee: European Rotogravure Association (Munich, DT)
Primary Class(es): 358/3.29 219/121.19, 358/490, 358/491, 358/500
Other Classes:
US Patent Ref:

3226696	Dec, 1965	Dove	178/6.
3564130	Feb, 1971	Crooks et al.	178/6.
3564131	Feb, 1971	Herold et al.	178/6.
3638231	Jan, 1972	Poole et al.	178/6.
3688026	Aug, 1972	Odnoko et al.	178/6.

Other Refs:
Primary Examiner: Cardillo, Jr., Raymond F.
Assistant Examiner:
Attorney: Cushman, Darby & Cushman