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US 7,011,466 B2Granted
Writing implement
AssigneeMitsubishi Pencil Company, Limited
InventorsHisashi Iida, Shigeru Okumura
Life of this patent
Estimating the term…
Abstract
Liquid-for-ink (50) and a main part of colorant (60) for coloring the liquid-for-ink (50) are separately stored within a writing implement. The writing implement is so fabricated that the colorant (60) is added to the liquid-for-ink (50) while the liquid-for-ink (50) is introduced to a writing tip (70).
Claims14
A writing implement,
- wherein liquid-for-ink and a main part of colorant for coloring the liquid-for-ink are separately stored;
- wherein the colorant is added to the liquid-for-ink while the liquid-for-ink is introduced to a writing tip;
- and
- wherein a colorant-moving-direction-restricting member which restricts the movement of the colorant toward the liquid-for-ink is provided between the liquid-for-ink and the colorant.
1 more element
A writing implement,
- wherein liquid-for-ink and a main part of colorant for coloring the liquid-for-ink are stored separately;
- wherein the colorant is added to the liquid-for-ink while the liquid-for-ink is introduced to a writing tip;
- wherein, as a colorant-moving-direction-restricting member, a material with a capillary activity is incorporated between a liquid-for-ink-storing portion and a colorant-storing portion;
- wherein the colorant-storing portion is wade by a colored-liquid-introducing core which is impregnated with the colorant;
- and
- wherein the material with a capillary activity is made by a captured-liquid-introducing core which introduces the liquid-for-ink to the colorant-storing portion and captures the colorant while the colorant moves toward the liquid-for-ink.
3 more elements
A writing implement;
- wherein liquid-for-ink and a main part of colorant for coloring the liquid-for-ink are stored separately;
- wherein the colorant is added to the liquid-for-ink while the liquid-for-ink is introduced to a writing tip;
- wherein, as a colorant-moving-direction-restricting member, a material with a capillary activity is incorporated between a liquid-for-ink-storing portion and a colorant-storing portion;
- wherein the colorant-storing portion is made by a colored-liquid-introducing core which is impregnated with the colorant;
- and
- wherein the material with a capillary activity is divided and provided between the liquid-for-ink-storing portion and the colorant-storing portion.
3 more elements
A writing implement;
- wherein liquid-for-ink and a main part of colorant for coloring the liquid-for-ink are stored separately, wherein the colorant is added to the liquid-for-ink while the liquid-for-ink is introduced to a writing tip;
- wherein a substance whose surface is porous, as a colorant-moving-direction-restricting member, is incorporated between the liquid-for-ink and the colorant;
- wherein an introducing core for the liquid-for-ink in positioned between the liquid-for-ink and the colorant;
- and
- wherein the colorant-moving-direction-restricting member is positioned either between the liquid-for-ink and the introducing core, or between the introducing core and the colorant.
2 more elements
A writing implement;
- wherein liquid-for-ink and a main part of colorant for coloring the liquid-for-ink are stored separately;
- wherein the colorant is added to the liquid-for-ink while the liquid-for-ink is introduced to a writing tip;
- and
- wherein a substance whose surface is porous is incorporated in the liquid-for-ink as a colorant-moving-direction-restricting member.
1 more element
A writing implement;
- wherein liquid-for-ink and a main part of colorant for coloring the liquid-for-ink are stored separately;
- wherein the colorant is added to the liquid-for-ink while the liquid-for-ink is introduced to a writing tip;
- and
- wherein at least one material selected from the group consisting of active carbon, zeolite, silica gel, alumina, and ion-exchanging resin is incorporated in the liquid-for-ink as a colorant-moving-direction-restricting member and/or at least one material selected from the group consisting of active carbon, zeolite, silica gel, alumina, and ion-exchanging resin is positioned between the liquid-for-ink and the colorant as a colorant-moving-direction-restricting member.
1 more element
A writing implement;
- wherein liquid-for-ink and a main part of colorant for coloring the liquid-for-ink are stored separately;
- wherein the colorant is added to the liquid-for-ink while the liquid-for-ink is introduced to a writing tip;
- and
- wherein a collector is inserted between a liquid-storing cell storing the liquid-for-ink and the writing tip, which prevents and regulates the leakage of the liquid-for-ink from the writing tip due to the pressure change within the liquid-storing cell.
1 more element
Dependencies are inferred from the claim text.