Patent ID: 8926071
Filing Date: 2015-01-06
Classification: B41J

Abstract:
1. A liquid-jet recording apparatus, comprising: a liquid-jet recording head unit to jet ink droplets toward a recording medium for printing, the liquid-jet recording head unit comprising an opening area through which the ink droplets fly out from the liquid-jet recording head unit; and a conveyance unit to convey the recording medium to a fore side of the opening area of the liquid-jet recording head unit, the liquid-jet recording head unit, comprising: wherein second ink droplets of the flying ink droplets having a flying path not substantially deflected by the gas flow hit the recording medium as print droplets without being caught by the gutter unit, the opening area through which the print droplets fly out from the liquid-jet recording head unit has a slit shape extending along a nozzle array arrangement direction in which the multiple inkjet nozzles are arrayed, the liquid-jet recording head unit is configured with at least one nozzle at each end of the nozzle array being a dummy nozzle that emits a continuous stream that is broken up by the separation unit into flying ink droplets that are non-print droplets, are deflected by the gas flow and are collected in the gutter unit, while the remaining nozzles emit respective continuous streams of print droplets and are assisted by the dummy nozzles such that the continuous streams of print droplets emitted by the remaining nozzle for printing have a uniform speed, and the continuous stream emitted by the dummy nozzle reduces air resistance to which the continuous streams emitted by the remaining nozzles are subjected, and an air flow generated in the opening area has a velocity vector directed inward from the opening area.