Direct measurement of toner particle size

Author

Nakamura, Yoshihiko ; Kutsuwada, N.

Author_Institution

Nippon Inst. of Technol., Saitama, Japan

fYear

1989

fDate

1-5 Oct. 1989

Firstpage

2239

Abstract

The distribution of particle size in an electrophotographic toner has a marked influence on the images formed by the plain paper copier. The authors present a method for the direct measurement of toner particle size using an optical microscope in combination with an image processor. The Nexus 6400 image processing system is used, assisted by a minicomputer, allowing a large number of toner particles to be measured in a short time. The distribution of particle size for four types of shattered toner on the market has been measured by this system, and the median effective diameter for over 1000 particles has been determined to be near 14-16 mu m from the typical cumulative distribution. The experimental results are compared with previous results obtained by an applied Millikan method and a laser Doppler method.<>

Keywords

computerised instrumentation; computerised picture processing; microscopy; particle size measurement; 14 to 16 micron; Nexus 6400 image processing system; electrophotographic toner; median effective diameter; minicomputer; optical microscope; particle size distribution; particle size measurement; Cameras; Electron microscopy; Electron optics; Glass; Image processing; Instruments; Optical microscopy; Particle measurements; Shape measurement; Size measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Society Annual Meeting, 1989., Conference Record of the 1989 IEEE

Conference_Location

San Diego, CA, USA

Type

conf

DOI

10.1109/IAS.1989.96951

Filename

96951