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. 05, 1991
Filed:
Mar. 09, 1990
Yoshinobu Umetani, Nara, JP;
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
Disclosed are a method of and a device for measuring different kinds of photosensitive toners each being sensitive to light with a different range of wavelengths and contained in a photosensitive toner mixture which is used for forming a color image by a single exposure and developing operation. One or more than one kind of light is selected from the different kinds of light having wavelengths to which the respective kinds of toners are sensitive, so as to be projected to the photosensitive toner mixture, so that one or more kinds of photosensitive toners sensitive to the projected light are discharged. The one or more kinds of discharged photosensitive toners are separated from the one or more kinds of charged photosensitive toners, and the amount of the charged photosensitive toners is measured. On the basis of the amount of each kind of photosensitive toner that is not sensitive to the projected light, the density of that photosensitive toner, or other photosensitive toners are determined.