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Publication of BE682497ApublicationCriticalpatent/BE682497A/xx
G03G15/00—Apparatus for electrographic processes using a charge pattern
G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
G03G15/28—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which projection is obtained by line scanning