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. 08, 2008
Filed:
Dec. 29, 2003
Jong-hwa Park, Suwon-si, KR;
Jong-hwa Park, Suwon-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An electrophotographic forming apparatus includes a light-emitting portion, a light-receiving portion, a waste toner sensing unit which is pivotably installed in a main body where the waste toner container is attachably and detachably mounted between the light-emitting portion and the light-receiving portion, intercepts light irradiated from the light-emitting portion when the waste, toner, container is not mounted in the main body, and does not intercept light when the waste toner container is mounted in the main body, such that a voltage output from the light-receiving portion is compared with a preset voltage and whether the waste toner container is mounted, the replacement time of the waste toner container can be sensed.