| Patent Number |
Title Of Patent |
Date Issued |
| 5801844 |
Image processing apparatus |
September 1, 1998 |
| An image processing apparatus which can produce improved quality copies by taking into account the effects which normally occur when successive copies of copies are made. When a document is to be copied, image information is input to a processing device relating to certain parameters |
| 5283664 |
Apparatus for converting and processing input bi-level image data and faithfully rendering tones |
February 1, 1994 |
| An image recorder for converting input bilevel image data to multilevel data, executing various kinds of image processing with the mutlilevel data, and then recording the processed multilevel data. The image recorder converts input bilevel image data to M-level data (M being equal to or |
| 5144338 |
Image recorder using pulse width modulation |
September 1, 1992 |
| An image recorder for recording an image by reading image data produced by quantizing the image pixel by pixel, subjecting the read image data to image processing, and then manipulating a laser beam modulated by pulse width modulation. A pixel of interest is recorded in a position which |
| 4984283 |
Two dimensional half-tone dot discrimination device |
January 8, 1991 |
| An image area discriminating device for automatically discriminating whether each of the scanned areas of an input image information has been previously subjected to halftone dotting treatment or not. The image area discriminating device may be assembled in a digital copier or like a |
| 4875190 |
Two-dimensional memory unit having a 2d array of individually addressable blocks each having a 2 |
October 17, 1989 |
| A two-dimensional memory unit allowing two-dimensional data to be written and read along different axes. Memory blocks having numerous memory cells arranged along each of the axes, are located at respective memory addresses, and a number of such memory blocks are arranged along the r |
| 4805120 |
Two-color image recorder |
February 14, 1989 |
| A two-color image recorder for reproducing a black and a red image component of an original document on a single paper includes a scanner which sequentially performs a first reading operation which omits the red component and a second reading operation which does not omit it. Image d |
| 4707745 |
Digital copier with document image region decision device |
November 17, 1987 |
| A digital copier for reproducing images carried in a document by converting them to an electrical binary or recording/non-recording signal and recording the binary signal. The copier includes a halftone image processor unit for generating a binary signal associated with a halftone im |
| 4479119 |
CRT Display device |
October 23, 1984 |
| A CRT display device which includes a display control unit is provided. In accordance with the present invention, the frequency of a pulse train supplied to a shift register for producing a video signal from a dot pattern signal is adjusted or controlled in response to a mode selection |
| 4227644 |
Document feed apparatus |
October 14, 1980 |
| Stop marks are printed on a document such as a bank passbook to indicate the position of the last data entry. The passbook is fed into the present apparatus until the lowermost stop mark is sensed. The passbook is stopped after a predetermined number of timing pulses have been counted af |
