Ink follower for aqueous ballpoint pen using gel-like material a

Details Ink follower for aqueous ballpoint pen using gel-like material a Ink follower for aqueous ballpoint pen using gel-like material a

1996-05-29

2000-10-17

Walczak, David J.

Coating implements with material supply

Including floating follower in reservoir

401142, B43K 708

Patent

active

061321249

ABSTRACT:
The present invention provides an ink follower for an aqueous ballpoint pen having an ink reservoir for directly preserving an ink, and this ink follower comprises at least a gel-like material having a predominantly viscous response and comprising a less volatile solvent having a viscosity of 5 Pa.multidot.sec or less and a hydrophobic thickening agent, and a solid piece having a specific gravity of 0.80 to 1.10. In addition, the present invention provides a ballpoint pen using this ink follower.
The ink follower of the present invention is characterized by using the gel-like material having a high flowability and the solid piece for dispersing and absorbing impact. This ink follower has a strong drop impact resistance, in contrast to a conventional gel-like ink control plug. The aqueous ballpoint pen using this ink follower does not lose its function, even when it is dropped from a shelf at a height of 1.5 m.

REFERENCES:
patent: 3334616 (1967-08-01), Urquhart
patent: 4671691 (1987-06-01), Case et al.
patent: 5348989 (1994-09-01), Shiraishi

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