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:
Jun. 16, 2009
Filed:
May. 25, 2006
Jae-cheol Lee, Hwaseong-si, KR;
Dong-kee Jung, Seoul, KR;
Seo-hyun Cho, Seongnam-si, KR;
Myung-song Jung, Gunpo-si, KR;
Jae-cheol Lee, Hwaseong-si, KR;
Dong-kee Jung, Seoul, KR;
Seo-hyun Cho, Seongnam-si, KR;
Myung-song Jung, Gunpo-si, KR;
Samsung Electronics Co., Ltd., Suwon-si, KR;
Abstract
An ink cartridge includes a residual ink sensing unit having a simple structure of an upper electrode plate and a lower electrode plate to accurately detect a capacitance between the upper and lower electrode plate. Therefore, data of a remaining amount of ink is reliably measured, there is less possibility that an ink bag is damaged when the residual ink sensing unit is installed in the ink bag, and damage to the ink cartridge and defective printing due to unstable supply of ink and the missing of the time for replacing the ink cartridge are prevented.