Control system, head module and printing apparatus for controlling driving elements to eject liquid
AssigneeBrother Kogyo Kabushiki Kaisha
InventorToru Yamashita
Life of this patent
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Abstract
A control system includes a control circuit. The control circuit is to be connected to a head unit including first driving elements and second driving elements. Based on an input print data, the control circuit applies a first signal to the first driving element and applies a second signal to the second driving elements. The control circuit changes the first signal to a third signal in a first time and changes the second signal to a fourth signal in a second time. Based on an input print data, the control circuit applies the third signal to the first driving element and applies the fourth signal to the second driving elements.
Claims28
A control system to be connected to a connector of a head unit, comprising a control circuit configured to:
- based on input print data, apply a first voltage signal to first driving elements of a head unit to eject liquid;
- based on the input print data, apply a second voltage signal to second driving elements of the head unit to eject liquid;
- change the first voltage signal to a third voltage signal in a first time;
- change the second voltage signal to a fourth voltage signal in a second time different from the first time;
- based on the input print data, apply the third voltage signal to the first driving elements to eject liquid;
- and
- based on the input print data, apply the fourth voltage signal to the second driving elements to eject liquid.
A method implemented by a control circuit of a control system to be electrically connected to a head unit, comprising:
- based on input print data, applying a first voltage to the first driving elements to eject liquid;
- based on the input print data, applying a second voltage to the second driving elements to eject liquid;
- changing the first voltage to a third voltage in a first time;
- changing the second voltage to a fourth voltage in a second time different from the first time;
- based on the input print data, applying the third voltage to the first driving elements to eject liquid;
- and
- based on the input print data, applying the fourth voltage to the second driving elements to eject liquid.
A head module comprising:
- first driving elements;
- second driving elements;
- a first power supply circuit;
- a second power supply circuit;
- and
- a control circuit configured to:
- based on input print data, apply a first voltage signal from the first power supply circuit to the first driving elements to eject liquid;
- based on the input print data, apply a second voltage signal from the second power supply circuit to the second driving elements to eject liquid;
- control the first power supply circuit to change the first voltage signal to a third voltage signal in a first time;
- control the second power supply circuit to change the second voltage signal to a fourth voltage signal in a second time different from the first time;
- based on the input print data, apply the third voltage from the first power supply circuit to the first driving elements to eject liquid;
- and
- based on the input print data, apply the fourth voltage from the second power supply circuit to the second driving elements to eject liquid.
A control system to be connected to a connector of a head unit, comprising a control circuit configured to:
- based on input print data, apply a first signal from a first signal supply to first driving elements of a head unit to eject liquid;
- based on the input print data, apply a second signal from a second signal supply to second driving elements of the head unit to eject liquid;
- control the first signal supply to change the first signal to a third signal in a first time;
- control the second signal supply to change the second signal to a fourth signal in a second time different from the first time;
- based on the input print data, apply the third signal to the first driving elements to eject liquid;
- and
- based on the input print data, apply the fourth signal to the second driving elements to eject liquid.
Dependencies are inferred from the claim text.