Haruji Mizuishi
31Patents
16h-index
72Co-inventors
80Inventor score
Filing activity: Feb 9, 1996 → Jun 30, 2011
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5812919A | Image transferring device for an image forming apparatus | Physics | 57 | Expired |
| US6085062A | Electrophotographic image forming apparatus | Physics | 53 | Expired |
| US5887224A | Image forming device with improved mixing of circulated developer with replensihed toner | Physics | 53 | Expired |
| US6055388A | Image forming apparatus and method for obtaining appropriate toner density | Physics | 50 | Expired |
| US6266501A | Image-forming apparatus having a seal for a developer and a method for detecting a removal of the seal | Physics | 50 | Expired |
| US6006050A | Image forming method and apparatus for controlling amount of supplied toner or agitating time | Physics | 47 | Expired |
| US6128449A | Image forming apparatus and method for controlling charging and developing bias voltage | Physics | 37 | Expired |
| US6144811A | Image forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paper | Physics | 35 | Expired |
| US6144822A | Image forming apparatus having detachable transfer roller and discharge device | Physics | 34 | Expired |
| US5915143A | Image forming apparatus and method for automatically adjusting toner density in response to humidity variations | Physics | 33 | Expired |
| US6148161A | Image forming apparatus with improved toner density control | Physics | 33 | Expired |
| US6160969A | Image forming apparatus with a voltage applying unit for image transfer | Physics | 32 | Expired |
| US6628903B1 | Image forming apparatus having a sensor for sensing an amount of reflected light from both a photoconductive element and a paper | Physics | 28 | Expired |
| US5873019A | Image forming apparatus having roller cleaning system and method | Physics | 24 | Expired |
| US5857132A | Apparatus and method for cleaning a transfer device of an image forming apparatus | Physics | 19 | Expired |
| US7313347B2 | Cleaning device, process cartridge, image forming apparatus and toner | Physics | 18 | Expired |
| US7373101B2 | Method and apparatus for image forming and effectively applying lubricant to an image bearing member | Physics | 15 | Active |
| US7493061B2 | Process cartridge including at least one replaceable member and image forming apparatus | Physics | 13 | Expired |
| US7826786B2 | Image forming apparatus, lubricant applying device, transfer device, process cartridge, and toner | Physics | 11 | Active |
| US7177555B2 | Image forming process and image forming apparatus | Physics | 10 | Expired |
| US6898383B2 | Image forming apparatus | Physics | 10 | Expired |
| US8000627B2 | Charging device, process cartridge, image forming apparatus, and toner | Physics | 9 | Active |
| US7333744B2 | Image forming apparatus that charges a photosensitive member by superimposing an alternate current bias voltage on a direct current bias voltage as the charge bias voltage | Physics | 7 | Expired |
| US7209698B2 | Method and apparatus for image forming capable of using minuscule spherical particles of toner, a process cartridge in use for the apparatus and a toner used in the image forming for obtaining an image with a high thin line reproducibility | Physics | 7 | Expired |
| US8428488B2 | Charging device, process cartridge, image forming apparatus, and toner | Physics | 6 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.