초록 ▼

An electrophotographic apparatus and method are provided to reduce smearing on printed medium by reducing the toner pile height of printed lines and characters. Control is provided for establishing the amount of toner to be applied on a picture element (PEL) basis. This is accomplished by the creati

An electrophotographic apparatus and method are provided to reduce smearing on printed medium by reducing the toner pile height of printed lines and characters. Control is provided for establishing the amount of toner to be applied on a picture element (PEL) basis. This is accomplished by the creation of mask patterns that distinguish characters and lines from large patches to be printed, and by identifying PELs internal of characters boundary requiring exposure modulation during printing.

대표청구항 ▼

[ What is claimed is:] [1.] An electrophotographic printer apparatus that reduces smearing of two-dimensional printed images on printed medium, the two-dimensional images comprised of predetermined image pattern generated from data representing either print or blank in a matrix of positions arranged

[ What is claimed is:] [1.] An electrophotographic printer apparatus that reduces smearing of two-dimensional printed images on printed medium, the two-dimensional images comprised of predetermined image pattern generated from data representing either print or blank in a matrix of positions arranged in horizontal rows and vertical columns, the apparatus comprising:a voltage source;a memory for storing the predetermined image pattern data;a program comprising at least one mask matrix, wherein the program performs logical operations to compare the at least one mask matrix with the predetermined image pattern data on a PEL by-PEL basis to determine whether a target PEL is positioned interior of a character or line; and,a controller that modulates the voltage source if the target PEL is positioned interior of a character or line.