The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 22, 2005
Filed:
Apr. 23, 2003
Yasunori Ichikawa, Minami-Ashigara, JP;
Katsuhisa Ohzeki, Minami-Ashigara, JP;
Fumiko Shiraishi, Minami-Ashigara, JP;
Tetsurou Mitsui, Minami-Ashigara, JP;
Shigeharu Urabe, Minami-Ashigara, JP;
Nobuo Nishida, Uozu, JP;
Kenichi Harashima, Uozu, JP;
Yasunori Ichikawa, Minami-Ashigara, JP;
Katsuhisa Ohzeki, Minami-Ashigara, JP;
Fumiko Shiraishi, Minami-Ashigara, JP;
Tetsurou Mitsui, Minami-Ashigara, JP;
Shigeharu Urabe, Minami-Ashigara, JP;
Nobuo Nishida, Uozu, JP;
Kenichi Harashima, Uozu, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
The mixing state of static mixing is optimized, so that it is possible to form silver halide emulsion particles in small sizes with an excellent mono-dispersion characteristic. An aqueous solution of haloid salt is blown out from a first nozzle into a mixing chamber as a rectilinear flow of turbulent flow, and before eddy viscosity formed when the rectilinear flow is blown out from the first nozzle of a small diameter to the mixing chamber of a greater diameter reaches a maximum, or before a maximum flow speed of the rectilinear flow is reduced to {fraction (1/10)} or below, an aqueous solution of silver nitrate is blown out from a second nozzle as a crossflow of turbulent flow which crosses the rectilinear flow at a substantially right angle and is entrained by the rectilinear flow, so that the two solutions are allowed to mix and react with each other instantaneously, and a liquid resulting from the mixing and reaction is discharged from a discharge duct.