Issued Patents All Time
Showing 1–25 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6725010 | Fusing apparatus having an induction heated fuser roller | — | 2004-04-20 |
| 6188861 | Tandem tri-level xerographic apparatus and method for producing pictorial color images | Michael M. Shahin | 2001-02-13 |
| 6163672 | Tandem tri-level xerographic apparatus and method for producing highly registered pictorial color images | Michael M. Shahin | 2000-12-19 |
| 6122477 | Induction heated fusing apparatus having a dual function transformer assembly | — | 2000-09-19 |
| 6028616 | Enhanced color gamut from 2-pass xerocolography with 2.lambda. imager and 2-layer photoreceptor | Gregory J. Kovacs | 2000-02-22 |
| 5895738 | Extension of xerocolorgraphy to full color printing employing additive RGB+ K colors | Gregory J. Kovacs | 1999-04-20 |
| 5890033 | Developer housing heater using a centrally heated mixing auger | — | 1999-03-30 |
| 5837408 | Xerocolography tandem architectures for high speed color printing | Gregory J. Kovacs | 1998-11-17 |
| 5790928 | Switchable dual wavelength flood lamp for simplified color printing architecture based on xerocolography | Gregory J. Kovacs | 1998-08-04 |
| 5751437 | Development combination exposure and recharge scheme to eliminate development defects in two pass process color xerocolography | Gregory J. Kovacs | 1998-05-12 |
| 5729807 | Optically switched commutator scheme for hybrid scavengeless segmented electroded donor rolls | — | 1998-03-17 |
| 5701564 | Scavengeless development apparatus including an electroded donor roll having a tri-contact commutator assembly | — | 1997-12-23 |
| 5592281 | Development scheme for three color highlight color trilevel xerography | Gregory J. Kovacs | 1997-01-07 |
| 5592271 | Donor rolls with capacitively cushioned commutation | Gerald M. Fletcher | 1997-01-07 |
| 5589917 | Donor rolls with magnetically coupled (Transformer) commutation | Steven C. Hart | 1996-12-31 |
| 5539505 | Commutating method for SCD donor roll bias | — | 1996-07-23 |
| 5410395 | Means for controlling trilevel inter housing scorotron charging level | James E. Williams | 1995-04-25 |
| 5351113 | Pre-pretransfer treatment to increase transfer latitude in tri-level xerography | Kenneth W. Pietrowski, Larry G. Hogestyn | 1994-09-27 |
| 5081503 | Compact magnetic bead pick-off device | William Maxwell Allen, Jr. | 1992-01-14 |
| 5061969 | Hybrid development scheme for trilevel xerography | William Maxwell Allen, Jr., Jerome E. May | 1991-10-29 |
| 5049949 | Extension of tri-level xerography to black plus 2 colors | Jerome E. May | 1991-09-17 |
| 5038177 | Selective pre-transfer corona transfer with light treatment for tri-level xerography | William Maxwell Allen, Jr., Gerald M. Fletcher, James E. Williams | 1991-08-06 |
| 5021838 | Preferred toner/carrier properties | William Maxwell Allen, Jr., Howard M. Stark | 1991-06-04 |
| 4998139 | Adaptive bias control for tri-level xerography | Jerome E. May, Howard M. Stark | 1991-03-05 |
| 4990955 | White level stabilization for tri-level imaging | Jerome E. May, Howard M. Stark | 1991-02-05 |