Patent name: Self-exhausting ink cartridge
Application No.: CN02819347.4 Publication No.: CN1561306
Application Date: 2002.10.21 Public Day: 2005.01.05
Applicant: US Sonorco Development Corporation
A self-venting ink cartridge for dispensing an extrudable fluid such as ink, the cartridge including a cylindrical body for storing fluid, and a plunger for forcing fluid through the nozzle. The cylindrical body is formed from a web and the interior is lined with a lining material, the lining material superimposes on itself to form a slightly thicker raised area than the surrounding area, a plunger comprising a slightly convex surface, and a cylindrical body Sliding mating sidewalls are formed, and the plunger sidewall and the protruding area define an exhaust passage. When the plunger is inserted into the fluid-filled cartridge, the air is automatically discharged through the channel.
Reprinted from: Chinese Packaging