The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 1995
Filed:
Aug. 18, 1993
Kazuhiro Yuasa, Zama, JP;
Kazumasa Koike, Atsugi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image processing apparatus includes a reading part for reading an image by raster scanning of a document and for producing a multilevel image data relating to one pixel of the image, a memory part for storing a plurality of predetermined weight matrix patterns, each weight matrix pattern having N.times.N weight coefficients arranged in an N.times.N formation, a selecting part for selecting one of the plurality of predetermined weight matrix patterns based on a printing characteristic of a printing unit that prints a bi-level processed image, a processing part for adding a weight coefficient read from the selected weight matrix pattern to the multilevel image data relating to one pixel from the reading part so that a weighted multilevel image data is produced, and a binarizing part for processing the weighted multilevel image data by using a binarizing process based on an error scattering method to produce a bi-level signal relating to one dot of a processed image, and for supplying the bi-level signal to the printing unit to print the processed image.