JP2008284848A5 - - Google Patents

Claims (5)

(A) a plurality of nozzles for discharging liquid, and a plurality of nozzles divided into a plurality of groups;
(B) an element that operates to discharge the liquid from the nozzle, the element provided corresponding to the plurality of nozzles;
(C) a drive signal generation unit that generates a plurality of types of drive signals applied to the element,
(C1) a first drive signal including an ejection pulse applied to the element when ejecting the liquid;
(C2) a second drive signal including a plurality of thickening suppression pulses applied to the element when suppressing the liquid thickening;
A drive signal generator for generating (C3);
(D) applying the ejection pulse to the element based on a command to eject the liquid;
An application control unit that applies, to the element, a specific thickening suppression pulse selected according to the group from the plurality of thickening suppression pulses based on a command not to discharge liquid;
A liquid ejection apparatus having (E). The liquid ejection device according to claim 1,
The plurality of nozzles are:
It is divided into several groups according to the type of liquid to be discharged.
The application control unit includes:
A liquid ejection apparatus that applies a specific thickening suppression pulse selected according to the type of the liquid to the element. The liquid ejection device according to claim 1 or 2, wherein
The drive signal generator is
Generating the second drive signal including a plurality of types of thickening suppression pulses of voltage change patterns having different degrees of liquid thickening suppression;
The application control unit includes:
A liquid ejection apparatus that selects a specific type of thickening suppression pulse from the plurality of types of thickening suppression pulses. The liquid ejection device according to claim 3,
The plurality of nozzles are:
It is divided into several groups according to the type of liquid to be discharged.
The application control unit includes:
For a device that ejects liquid with a high degree of ease of thickening, select a type of thickening suppression pulse that has a higher degree of suppression of thickening than an element that ejects liquid with a low degree of ease of thickening, Liquid ejection device. (A) A first drive signal including an ejection pulse applied to an element that performs an operation for ejecting liquid when ejecting liquid from a nozzle, and applied to the element when suppressing the increase in viscosity of the liquid Generating a second drive signal including a plurality of thickening suppression pulses to be generated;
(B) applying the ejection pulse to the element based on a command to eject the liquid;
Based on a command not to discharge liquid, a specific thickening suppression pulse is selected from the plurality of thickening suppression pulses according to a group constituted by some of the plurality of nozzles, and corresponding elements Applying to
(C) A liquid discharge method.