Issued Patents All Time
Showing 76–100 of 113 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5129048 | Efficient data storage system for gray-scale printers | — | 1992-07-07 |
| 5125072 | Efficient data storage system for gray-scale printers | — | 1992-06-23 |
| 5121224 | Reproduction apparatus with selective screening and continuous-tone discrimination | Hwai-Tzuu Tai | 1992-06-09 |
| 5110702 | Process for toned image transfer using a roller | Donald S. Rimai | 1992-05-05 |
| 5107349 | Multiple screen frequency half-toning with one screen angle | Hwai-Tzuu Tai, Eric K. Zeise | 1992-04-21 |
| 5099284 | Master sheet and drum assembly | — | 1992-03-24 |
| 5087981 | Error diffusion of overlapping dots | Hwai-Tzuu Tai | 1992-02-11 |
| 5077159 | Charge injection amplification | Frederick R. Gilley | 1991-12-31 |
| 5050000 | Error diffusion of subcells in digital halftoning | — | 1991-09-17 |
| 5049897 | Method and apparatus for beam displacement in a light beam scanner | — | 1991-09-17 |
| 5025322 | Method and apparatus for grey level recording using multiple addressability | — | 1991-06-18 |
| 5014093 | Color copying apparatus and method with improved productivity | — | 1991-05-07 |
| 5003494 | Data storage system for an electronic color printer | — | 1991-03-26 |
| 5001028 | Electrophotographic method using hard magnetic carrier particles | Michael Mosehauer, Eric K. Zeise | 1991-03-19 |
| 4998118 | LED printhead with post lens optical feedback and method of controlling same | — | 1991-03-05 |
| 4980701 | Non-impact printhead using a mask with a dye sensitive to and adjusted by light in a first spectrum to balance the transmission of light in a second spectrum emitted by an LED array | Lawrence E. Contois, Eric K. Zeise | 1990-12-25 |
| 4980700 | LED printhead with droplet formed micro-lenslets and method for producing same | — | 1990-12-25 |
| 4959730 | False density contour suppression using randomly modified input signals for comparison to threshold values | Hwai-Tzuu Tai | 1990-09-25 |
| 4949135 | Visual based process control apparatus which is based on a near uniform human visual response space | — | 1990-08-14 |
| 4947195 | LED printer | James Flynn | 1990-08-07 |
| 4945422 | False density contour suppression using stored random probabilities to form print/no-print decisions | — | 1990-07-31 |
| 4941004 | Printer apparatus | Hieu T. Pham, Kenneth D. Kieffer, Pin S. Tschang, Eric K. Zeise | 1990-07-10 |
| 4916561 | Hard copy printer having magnetic tape image storage | Eric K. Zeise | 1990-04-10 |
| 4875057 | Modular optical printhead for hard copy printers | Edwin A. Hediger, Hieu T. Pham | 1989-10-17 |
| 4837587 | Non-impact printer with nonuniformity correction | — | 1989-06-06 |