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US 6,551,079 B1Granted
Ink-jet recording apparatus and parts thereof
AssigneeCanon Kabushiki Kaisha
InventorsMasakatsu Iwata, Masanori Kaneko, Hisashi Taniguchi
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AssigneeCanon Kabushiki Kaisha
InventorsMasakatsu Iwata, Masanori Kaneko, Hisashi Taniguchi
Estimating the term…
When a piston unit and a valve unit employed in a recording head of an ink-jet recording apparatus were manufactured by a conventional method, comprising parts for these unit were separately formed and assembled, which required considerable man-hours for the assembly and measures to prevent contamination by foreign particles during the assembly. The present invention is carried out to solve these problems and provides units at less expensive cost. In order to attain above-mentioned objectives the units are formed out of mutually insoluble materials with other parts by an insert molding or a multi-color molding. By employing forming materials with different molding shrinkage rate, desired gas-tightness of the units are attained by keeping moving performances of the units almost intact. In addition a rubber or an elastomer is employed as a material for a part which requires a gas-tightness and flexibility.
A piston pump comprised of a cylinder, a piston and a valve formed out of materials mutually insoluble in each other by an insert molding or a multi-color molding.
A valve comprised of a first part having a cylindrical hole bearing at least one opening for a flow path and a second part engaged in said cylindrical hole of said first part capable of rotating freely so as to connect with said at least one opening for said flow path of said first part, and said first and second parts are formed out of materials mutually insoluble in each other by an insert molding or a two-color molding.
A valve comprised of a first part having a cylindrical hole bearing at least two openings for flow paths and a second part engaged in said cylindrical hole of said first part capable of rotating freely so as to select at least one of said openings for said flow paths of said first part selectively and said first and second parts are formed out of materials mutually insoluble in each other by an insert molding or a two-color molding.
A valve comprised of a first part having a cylindrical hole bearing at least one opening for a flow path and a second part engaged in said cylindrical hole of said first part capable of sliding freely so as to connect with said at least one opening for said flow path of said first part and said first and second parts are formed out of materials mutually insoluble in each other by an insert molding or a two-color molding.
A valve comprised of a first part having a cylindrical hole bearing at least two openings for flow paths and a second part engaged in said cylindrical hole of said first part capable of sliding freely so as to select at least one of said openings for said flow paths of said first part selectively and said first and second parts are formed of materials mutually insoluble in each other by an insert molding or a two-color molding.
Parts for an ink-jet recording apparatus, wherein said parts come into contact with ink and with other parts, and said parts are formed out of materials mutually insoluble in each other by an insert molding or multi-color molding.
Dependencies are inferred from the claim text.