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US 2003/0081981 A1Published application
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.
Claims22
(amended) 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
(amended) 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 liquid-insoluble substance is included in the liquid-for-ink.
1 more element
(amended) 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 material with a capillary activity as a colorant-moving-direction-restricting member 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 made by a captured-liquid-introducing core which, though introducing the liquid-for-ink to the colored-liquid-storing portion, captures the colorant while the colorant moves toward the liquid-for-ink.
3 more elements
(amended) 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 material with a capillary activity as a colorant-moving-direction-restricting member 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
(deleted)
(amended) 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, at least, 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 is positioned between the liquid-for-ink and the colorant;
- and
- wherein the substance whose surface, at least, is porous is positioned either between the liquid-for-ink and the introducing core, or between the introducing core and the colorant.
2 more elements
(added) 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, at least, is porous, as a colorant-moving-direction-restricting member, is incorporated in the liquid-for-ink.
1 more element
(added) 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 of the group consisting of active carbon, zeolite, silicagel, alumina, and ion-exchanging resin, as a colorant-moving-direction-restricting member, is/are incorporated either at least in the liquid-for-ink, or between the liquid-for-ink and the colorant.
1 more element
(added) 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 the liquid-for-ink is so stored in a shaft tube as to contain liquid-insoluble substance therein;
- and
- wherein the shaft tube is so fabricated that the inside thereof can be seen.
2 more elements
(added) 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 material with a capillary activity is incorporated between a liquid-for-ink-storing portion and a colorant-storing portion;
- wherein the liquid-for-ink is so stored in a shaft tube as to contain liquid-insoluble substance therein;
- and
- wherein the shaft tube is so fabricated that the inside thereof can be seen.
3 more elements
(added) 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, at least, is porous is incorporated either at least in the liquid-for-ink, or between the liquid-for-ink and the colorant;
- wherein the liquid-for-ink is so stored in a shaft tube as to contain liquid-insoluble substance therein;
- and
- wherein the shaft tube is so fabricated that the inside thereof can be seen.
3 more elements
(added) A writing implement;
- wherein liquid-for-ink and a main part of colorant for coloring the liquid-for-ink are stored separately;
- where in 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.