Method for Estimating the Charge Density Distribution on a Dielectric Surface
| Autor: | Hidekazu Murata, Hiroyuki Suhara, Hiroshi Shimoyama, Takuya Nakashima |
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| Rok vydání: | 2017 |
| Předmět: |
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Materials science Optical instrument Resolution (electron density) Charge density Charge (physics) 02 engineering and technology Dielectric Electron 021001 nanoscience & nanotechnology 01 natural sciences Computational physics law.invention 010309 optics law Electric field 0103 physical sciences 0210 nano-technology Instrumentation |
| Zdroj: | Microscopy and microanalysis : the official journal of Microscopy Society of America, Microbeam Analysis Society, Microscopical Society of Canada. 23(3) |
| ISSN: | 1435-8115 |
| Popis: | High-quality color output from digital photocopiers and laser printers is in strong demand, motivating attempts to achieve fine dot reproducibility and stability. The resolution of a digital photocopier depends on the charge density distribution on the organic photoconductor surface; however, directly measuring the charge density distribution is impossible. In this study, we propose a new electron optical instrument that can rapidly measure the electrostatic latent image on an organic photoconductor surface, which is a dielectric surface, as well as a novel method to quantitatively estimate the charge density distribution on a dielectric surface by combining experimental data obtained from the apparatus via a computer simulation. In the computer simulation, an improved three-dimensional boundary charge density method (BCM) is used for electric field analysis in the vicinity of the dielectric material with a charge density distribution. This method enables us to estimate the profile and quantity of the charge density distribution on a dielectric surface with a resolution of the order of microns. Furthermore, the surface potential on the dielectric surface can be immediately calculated using the obtained charge density. This method enables the relation between the charge pattern on the organic photoconductor surface and toner particle behavior to be studied; an understanding regarding the same may lead to the development of a new generation of higher resolution photocopiers. |
| Databáze: | OpenAIRE |
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