Shin Hasegawa
144Patents
16h-index
162Co-inventors
89Inventor score
Filing activity: Feb 2, 1988 → Nov 3, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5327196A | Image forming method | Physics | 47 | Expired |
| US5387965A | Toner concentration control method | Physics | 45 | Expired |
| US4957336A | Laser beam scanner and its fabricating method | Emerging Cross-Sectional Technologies | 43 | Expired |
| US8474963B2 | Inkjet recording ink and image forming method | Performing Operations; Transporting | 36 | Active |
| US5198861A | Image density control method for an image forming apparatus for reducing background contamination of a photoconductive drum | Physics | 33 | Expired |
| US6256459A | Developing apparatus and image forming apparatus using the same developing apparatus and method of determining end-of-toner condition | Physics | 30 | Expired |
| US5182600A | Toner end detecting method for an electrophotographic copier | Physics | 27 | Expired |
| US7551862B2 | Developing device, and process unit and image forming apparatus using the developing device | Physics | 25 | Active |
| US7251420B2 | Method and apparatus for image forming capable of effectively detecting toner density | Physics | 23 | Expired |
| US5857131A | Image forming condition control device and method for an image forming apparatus | Physics | 22 | Expired |
| US7228081B2 | Method and apparatus for image forming capable of controlling image-forming process conditions | Physics | 21 | Expired |
| US7101919B2 | Inkjet, inkjet cartridge containing the inkjet ink, inkjet recording apparatus using the inkjet ink, inkjet recording method using the inkjet ink, and image formed by the inkjet recording method | Chemistry; Metallurgy | 21 | Expired |
| US5982402A | Apparatus for printing color image by combination of optical beam scanning units and photosensitive drums | Electricity | 19 | Expired |
| US4948213A | Beam scanner | Physics | 19 | Expired |
| US4824191A | Optical pickup | Physics | 17 | Expired |
| US6786959B2 | PIGMENT DISPERSION, METHOD FOR PREPARING THE PIGMENT DISPERSION, INKJET INK USING THE PIGMENT DISPERSION, METHOD FOR PREPARING THE INKJET INK, INK CARTRIDGE CONTAINING THE INKJET INK, IMAGE FORMING METHOD AND APPARATUS USING THE INKJET INK, AND PRINT IMAGE PRODUCED BY THE IMAGE FORMING METHOD AND APPARATUS | Chemistry; Metallurgy | 16 | Expired |
| US7110696B2 | Cleaning unit, process cartridge, and image forming apparatus | Physics | 16 | Expired |
| US7798629B2 | Pigment dispersion, inkjet-ink using the pigment dispersion, image forming process, and image forming apparatus | Chemistry; Metallurgy | 15 | Active |
| US7272354B2 | Cleaning unit and image forming apparatus having multiple cleaning blades | Physics | 14 | Expired |
| US7384112B2 | Inkjet recording apparatus | Performing Operations; Transporting | 14 | Active |
| US7260335B2 | Image-information detecting device and image forming apparatus | Physics | 14 | Expired |
| US7106664B2 | Optical head and information storage device | Performing Operations; Transporting | 13 | Expired |
| US7616909B2 | Image forming apparatus and image forming method | Physics | 12 | Active |
| US7515844B2 | Image density control method and image forming apparatus | Physics | 12 | Active |
| US9952435B2 | Display apparatus having curved image forming apparatus | Physics | 11 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.