Patent ID: 11890871
Assignee: KONICA MINOLTA, INC.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 14:
15. An inkjet recording device including an inkjet head having a nozzle that discharges ink and a pressure generator that, in response to application of drive signals, provides pressure changes for ink in a pressure chamber that communicates with the nozzle to cause the ink to be discharged from the nozzle, a plurality of droplets of the ink discharged from the nozzle in response to application of a series of the drive signals being caused to hit a recording medium to form a single pixel, the inkjet recording device comprising:
a driver that applies the series of the drive signals to the pressure generator, the series of the drive signals including a first one of the drive signals that has a first voltage amplitude and a second one of the drive signals that has a second voltage amplitude larger than the first voltage amplitude, wherein, a last drive signal in the series of the drive signals is the second one of the drive signals, and
the first voltage amplitude and the second voltage amplitude are determined such that a ratio Va/Vb has a value corresponding to a specific gravity of the ink to be discharged from the nozzle, where Va indicates the first voltage amplitude, and Vb indicates the second voltage amplitude;
wherein the first voltage amplitude and the second voltage amplitude are determined so as to satisfy 0.75<Va/Vb<0.86 in a case where the specific gravity of the ink to be discharged from the nozzle is more than or equal to 1.0 g/cm3 and less than or equal to 1.9 g/cm3.