Ink-jet recording apparatus
AssigneeToshiba Tec Kabushiki Kaisha
InventorsHidehiro Watanabe, Atsushi Kubota, Megumi Shimizu
Life of this patent
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Abstract
Ink-jet heads having respective sets of ink ejection nozzles arranged longitudinally at a predetermined pitch are arranged in the moving direction of a sheet of art paper with a predetermined distance separating them from each other. The pitch Q separating the ink ejection nozzle of one of the ink-jet heads located at an end thereof from the corresponding ink ejection nozzle of the other ink-jet head located at the proximal end of the former ink ejection nozzle is made smaller the predetermined pitch P of arrangement of the ink ejection heads of the ink-jet heads.
Claims13
An ink-jet recording apparatus comprising:
- a plurality of ink-jet heads, each having a plurality of ink ejection nozzles arranged at a predetermined pitch;
- and
- a recording medium adapted to be moved relative to said ink-jet heads;
- said ink-jet heads being arranged with a predetermined gap separating them from each other in the moving direction thereof relative to said recording medium, said ink ejection nozzles being arranged in a direction crossing the direction of relative movement of said recording medium;
- the timings of printing characters of a line on said recording medium by means of the ink ejection nozzles of each of the ink-jet heads being so regulated as to accurately align the dots printed by the ink from the ejection nozzles;
- the ink-jet heads being so arranged as to make the distance between the most closely located ink ejection nozzles of two adjacently located ink-jet heads to be separated from each other by a distance smaller than the pitch of arrangement of the ink ejection nozzles of each ink-jet head.
An ink-jet recording apparatus comprising:
- a plurality of ink-jet heads, each having a plurality of ink ejection nozzles arranged at a predetermined pitch;
- and
- a recording medium adapted to be moved relative to said ink-jet heads;
- said ink-jet heads being arranged with a predetermined gap separating them from each other in the moving direction thereof relative to said recording medium, said ink ejection nozzles being arranged in a direction crossing the direction of relative movement of said recording medium;
- the timings of printing characters of a line on said recording medium by means of the ink ejection nozzles of each of the ink-jet heads being so regulated as to accurately align the dots printed by the ink from the ejection nozzles;
- any two adjacently located ink-jet heads being so arranged as to make their respective sets of ink ejection nozzles partly overlap each other;
- at least a dot being formed by ink ejected from a pair of ink ejection nozzles selected respectively from two adjacently located ink-jet heads having the respective sets of ink ejection nozzles partly overlapping each other.
Dependencies are inferred from the claim text.