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. 02, 2015
Filed:
Sep. 06, 2012
Sangchul Lim, Daejeon, KR;
Yong Suk Yang, Daejeon, KR;
Seongdeok Ahn, Daejeon, KR;
Kyoung Ik Cho, Daejeon, KR;
SangChul Lim, Daejeon, KR;
Yong Suk Yang, Daejeon, KR;
Seongdeok Ahn, Daejeon, KR;
Kyoung Ik Cho, Daejeon, KR;
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, Daejeon, KR;
Abstract
A micro ballpoint pen enabling to print directly straight, oblique, curved, dashed, broken and wavy lines and a printing apparatus including the same. The micro ballpoint pen may include a tip body including a caulking portion, at least one inner protrusion, and at least one expansible or shrinkable elastic portion, a ball provided between the caulking portion and the inner protrusion, the ball contacting and rolling on a target printing object to eject ink onto the target printing object, a supporting bar pressing the ball toward the caulking portion to form an ink outflowing channel between the caulking portion and the ball, and a control part expanding or shrinking the elastic portion to control the ink outflowing channel.