Dot matrix impact printer
AssigneeCitizen Watch Co., Ltd.
InventorsToshio Kurihara, Masao Kunita, Makoto Yasunaga, Satoru Uchida
Life of this patent
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Abstract
A dot matrix impact printer for color printing comprising a platen and a print wire. The platen comprises a plurality of members made of porous material containing different colors. The print wire and platen member are driven to a position adjacent each other and the print wire is moved to force a paper to the platen, so that a dot is printed on the paper with color ink contained in the corresponding member of the platen.
Claims4
A dot matrix impact printer comprising a platen comprising a plurality of disk members disposed side by side in the axial direction of the platen, each of said disk members being made of a porous material, impregnated with a colour ink different from the ink of the adjacent member;
- a print wire carrier juxtapositioned to and slidably mounted along the axial line of said platen having a plurality of print wires provided on said print wire carrier, each of said print wires being adjacent to a corresponding disk member;
- a print wire driving unit provided on said print wire carrier for moving said each print wire to said platen;
- means for shifting said print wire carrier along the axial line of said platen;
- means for shifting said platen along the axial line thereof to keep the respective adjacent relationship to the corresponding print wire;
- and means for feeding a printing medium in the direction perpendicular to the moving direction of said print wire.
Dependencies are inferred from the claim text.