Writing instrument

Abstract

The application relates to a writing instrument. Delivery systems for delivering compositions with large particles are disclosed herein. For example, a writing instrument capable of delivering ink with large pigment particles can include a barrel, an ink reservoir in fluid communication with a nib, and one or more valves or seals for sealing the reservoir when not in use. For example, the writing instrument can include a free-ink reservoir having an agitator disposed on a valve stem.

Description

technical field [0001] The present invention generally relates to writing instruments for delivering ink compositions having large pigment particles. Background technique [0002] Conventional writing instruments are generally designed for use with ink compositions containing relatively small pigment particles. They generally comprise a cartridge or housing, an ink reservoir for containing the ink composition within the cartridge, and a writing point or nib in fluid communication with the ink reservoir for delivering the ink composition to the substrate. Some writing instruments, such as ballpoint pens, contain relatively non-volatile high-viscosity inks. These conventional writing instruments are generally not capable of delivering inks with large pigment particles because the particles would clog the bead or other delivery system. Furthermore, these conventional writing instruments generally do not have a sealing mechanism to seal the ink stored in the reservoir from env...

AI Technical Summary

Problems solved by technology

This can require the user to utilize unnatural writing strokes, which can be unpleasant and even tiring

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