Yukio Sakano

Original-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination system

CRT Display device

Special-document discriminating apparatus and managing system for image forming apparatus having a special-document discriminating function

Method and apparatus for detecting a closed-loop area of an image

Duplicator having function concerning specific mark put on recording sheet and image forming apparatus having function of processing confidential documents

Shading correction system for image scanning apparatus

Image forming apparatus which adds identification information to recorded images to prevent forgery

Digital copier with document image region decision device

Image processing apparatus especially suitable for producing smooth-edged output multi-level tone data having fewer levels than input multi-level tone data

Apparatus for converting and processing input bi-level image data and faithfully rendering tones, colors, and edges