Title:
INK-BASED PEN
Document Type and Number:
WIPO Patent Application WO/2021/134918
Kind Code:
A1
Abstract:
An ink-based pen. The ink-based pen comprises an ink reservoir, a pen tip, and an ink unit assembly. The ink unit assembly comprises a pen collar and an ink unit sleeved in the pen collar. The two ends of the ink unit are respectively connected to the ink reservoir and the pen tip. The ink unit comprises an ink delivery channel, an air inlet groove, and a side through groove, wherein the side through groove is communicated with the ink delivery channel, the air inlet groove, and the ink reservoir. According to the ink-based pen, by improving the structure of the ink unit, the smoothness of the output of the ink and sealing property of the ink-based pen can be improved, thereby reducing the waste of ink and improving the dry resistance of ink.
Inventors:
LI LEIXIN (CN)
Application Number:
PCT/CN2020/078720
Publication Date:
July 08, 2021
Filing Date:
March 11, 2020
Export Citation:
Assignee:
SHANGHAI LEES MFG CO LTD (CN)
International Classes:
B43K7/10; B43K5/18
Foreign References:
| US5951187A | 1999-09-14 | |||
| DE102009032230A1 | 2011-01-13 | |||
| JPH1178348A | 1999-03-23 | |||
| US20020067948A1 | 2002-06-06 | |||
| CN205167965U | 2016-04-20 |
Other References:
See also references of EP 4086086A4
Attorney, Agent or Firm:
SHANGHAI ESSEN PATENT & TRADEMARK OFFICE (CN)
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