Jun Hirabayashi
85Patents
11h-index
77Co-inventors
81Inventor score
Filing activity: Sep 9, 1996 → Aug 9, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9703230B2 | Image forming apparatus correcting unevenness of potential distribution due to change of exposure spot shape of light beam on photosensitive member | Physics | 68 | Active |
| US6128456A | Image forming apparatus having a charging member applying an electric charge through electrically conductive or electroconductive particles to the surface of a photosensitive or image bearing member | Physics | 50 | Expired |
| US5933184A | Color image forming device | Electricity | 38 | Expired |
| US6081681A | Charging device, charging method, process cartridge and image forming apparatus | Emerging Cross-Sectional Technologies | 27 | Expired |
| US6134407A | Charging apparatus for charging a moving member to be charged including an elastic rotatable member carrying electroconductive particles on the surface thereof | Physics | 23 | Expired |
| US6038420A | Charging device, charging method and image forming apparatus | Physics | 13 | Expired |
| US6226480A | Image forming apparatus supplying charging accelerating particles to image bearing body in non-image forming | Physics | 12 | Expired |
| US6212346A | Charging member for holding electrically conductive particles in cells | Physics | 11 | Expired |
| US6442362B2 | Image forming apparatus for making recovery and restoration of toners by electrical conductive member | Physics | 11 | Expired |
| US6038418A | Charging method and a charging device for charging a member to be charged by a flexible charging member | Physics | 11 | Expired |
| US6173144A | Image forming apparatus which supplies image bearing member with electrically conductive particles during development | Physics | 11 | Expired |
| US6549742B1 | Charging apparatus employing charging particles, and image forming apparatus employing such a charging apparatus | Physics | 9 | Expired |
| US5729802A | Contact charger for charging a photosensitive member | Physics | 9 | Expired |
| US6298205A | Charging apparatus which stores electrically conductive particles in granule form | Physics | 8 | Expired |
| US8335441B2 | Image forming apparatus and image forming method | Physics | 8 | Active |
| US6233419A | Charging device and image forming apparatus | Physics | 8 | Expired |
| US5774769A | Charging apparatus and image forming apparatus | Physics | 8 | Expired |
| US6163671A | Contact charger having charging performance enhancing particles existing at a contact portion between the contact charger and the member to be charged | Physics | 8 | Expired |
| US6184913A | Thermal head and method of manufacturing the same | Performing Operations; Transporting | 8 | Expired |
| US9222882B2 | Measurement system that estimates reflection characteristics of a target object and control method thereof | Physics | 7 | Active |
| US6118965A | Image forming apparatus having a contact-type charger | Physics | 7 | Expired |
| US8611768B2 | Image forming apparatus and image forming method | Physics | 6 | Active |
| US6407764B1 | Thermal head and method of manufacturing the same | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6615010B2 | Electrifier for charging developer carrying member using charge particles, including charge rotary member and nip forming member having bias polarity the same as developer polarity | Physics | 5 | Expired |
| US6614460B2 | Thermal head and method of manufacturing the same | Performing Operations; Transporting | 5 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.