Asahi Kogaku Kogyo Kabushiki Kaisha

Asahi Kogaku Kogyo K.k.

Katsuhiko Nishimura

Masahiro Sato

Sumiaki Tsuru

Toru Nakajima

Masahiro Kita

Kazuyuki Shinho

Kazuyuki Shimbo

A sintered hydroxycalcium apatite body having an average particle size of 50-2,000 .mu.m is used to form a packing in a cell separating column for use in separating groups or populations of cells from a suspension of animal cells.

Medium, apparatus and method for cell separation

In a method and apparatus of forming a muticolor picture by electrophotography, first color toner, second color toner and third color toner are allowed to stick onto a photosensitive material according to the conventional method. Then after the surface of the photosensitive material is discharged to decrease the surface potential thereof, a fourth color toner is allowed to stick onto the photosensitive material, whereby mixing of the fourth color with the first, second and third colors is prevented.

Method and apparatus for forming a multicolor picture by

A charging method for transfer in an electrograph device having a phtosensitive drum uses a high voltage pulse train applied to a displaceable transferring sheet to effect transfer to the sheet of an image on the photosensitive drum. A detector for detecting the speed of feed of the sheet controls the frequency of the voltage pulse train so that the number of pulses per unit displacement of the sheet is independent of the speed at which the sheet moves.

Method and apparatus of charging for transfer in electrophotograph device

Growing community of inventors

Tokyo, Japan

Katsuhiko Nishimura