Ink-jet recording apparatus
AssigneeBrother Kogyo Kabushiki Kaisha
InventorsYoshikazu Takahashi, Koichiro Hara
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Abstract
An ink jet recording apparatus wherein each dot, having the same size, may be formed regardless of whether print commands are successive. The ink jet recording apparatus includes a first drive waveform and a second drive waveform wherein the second drive waveform is used when there is no dot printed immediately before a dot is to be printed and the first drive waveform is used when there is a dot printed in response to a print command immediately before a dot is to be printed. Thus, regardless of whether the first drive waveform or the second drive waveform is used, the same volume of ink droplets are ejected and the same sized dots are formed.
Claims30
An ink-jet recording apparatus, comprising:
- an ink-jet head including:
- a nozzle that ejects ink therefrom;
- and
- an actuator that defines an ink channel for filling the ink therein in communication with the nozzle;
- a driving device that drives the actuator to form a dot according to a predetermined signal;
- and
- a controller that controls outputs of the signal to the driving device, the controller generating the signal based on a drive waveform determined according to a presence or an absence of a dot immediately before the dot to be formed.
A method for ejecting ink from an ink-jet head with a nozzle that ejects ink therefrom and an actuator that defines an ink channel for filling the ink therein in communication with the nozzle, the method comprising the steps of:
- driving the actuator to form a dot according to a predetermined signal;
- and
- controlling the output of the signal to the actuator such that the signal is generated based on a drive waveform determined according to a presence or an absence of a dot immediately before the dot to be formed.
A computer-readable medium storing a program for driving an ink jet head with the nozzle and an actuator to form a dot according to a predetermined signal, the program comprising:
- a program for outputting the signal to the actuator;
- a program for determining the presence or an absence of a dot immediately before the dot to be formed;
- a program for generating the signal based on a drive waveform determined according to a presence or an absence of the dot immediately before the dot to be formed.
Dependencies are inferred from the claim text.