Electrophotographic printer

Details Electrophotographic printer Electrophotographic printer

1995-06-27

1996-06-18

Wong, Peter S.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358451, 395102, H04N 123, H04N 1393, G06F 1500, G06K 100

Patent

active

055283780

ABSTRACT:
An electrophotographic printer which can print an enlarged image which maintains the concentration of an original image and is superior in maintenance of a line width or a periodical pattern is disclosed. A controller successively outputs each two adjacent horizontal lines of an original image scanned vertically individually as picture element signals. An image enlargement circuit produces an insertion picture element signal indicating an average of the two picture element signals from the controller and outputs an enlargement picture element signal obtained by inserting the insertion picture element signal between the two picture element signals. An engine prints the original image but in an enlarged scale in accordance with the enlargement picture element signal received from the image enlargement circuit.

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