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AssigneeMitsubishi Pencil Company, Limited
InventorsKyoko Kobayashi, Makoto Ono, Akira Fukai, Takao Koyama, Hitoshi Nakamura, Kei Omoto, Tadashi Koriki
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A refill for a correction pen is constructed of a molded article of a polyamide resin obtained from monomers having an aromatic ring or a naphthene ring, a molded article of a blend of two or more kinds of polyamide resins, or a molded article having a multi-layered structure of two or more layers whose innermost layer in contact with the correction fluid is constituted of a polyamide resin. The applying part of a refill unit mounted on a ballpoint type applicator having a pressurizing mechanism in linkage with clicking action is formed by press fitting the rear end of a ballpoint pen tip having a rotatable ball to the attachment portion at the front end of an ink reservoir and a metal tube is squeezed to cover the outer periphery of the attachment portion at the front end of the ink reservoir to which the tip is fitted.
A refill for a correction pen storing a correction fluid having at least methyl cyclohexane as the main solvent, characterized in that the refill for the correction pen is constructed of a molded article of a polyamide resin obtained from monomers having an aromatic ring or a naphthene ring.
A refill for a correction pen storing a correction fluid having at least methyl cyclohexane as the main solvent, characterized in that the refill for the correction pen is constructed of a molded article of a blend of at least two kinds of polyamide resins, wherein one kind of polyamide resin is one that has at least one of an aromatic ring and a naphthene ring in the principal chain.
A refill for a correction pen storing a correction fluid having at least methyl cyclohexane as the main solvent, characterized in that the refill for the correction pen is configured of a multi-layered structure having two or more layers and the innermost layer in contact with the correction fluid is constituted of a polyamide resin, wherein the polyamide resin layer of the innermost layer is constituted of an aliphatic polyamide resin having at least one of an aromatic ring and a naphthene ring in the principal chain.
A refill unit comprising an applying part at the front end and an ink reservoir at the rear, wherein the refill unit is mounted in a barrel so as to be urged to the rear by a first spring;
Dependencies are inferred from the claim text.