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:
Apr. 06, 2021
Filed:
Mar. 13, 2020
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Shigeru Fujiwara, Yokohama Kanagawa, JP;
TOSHIBA TEC KABUSHIKI KAISHA, Tokyo, JP;
Abstract
According to one embodiment, an image forming apparatus includes a photosensitive drum, an exposure unit, a development unit, a toner supply motor, and a processor. The exposure unit exposes the photosensitive drum based on image data. The development unit forms a toner image on the photosensitive drum with toner supplied from a toner cartridge. The toner supply motor supplies the toner to the development unit from the toner cartridge. The processor detects toner emptiness when a toner supply ratio calculated based on an integrated value of a pixel count value of the image data and an integrated value of a driving time of the toner supply motor is less than a preset threshold.