INKJET PRINTING DEVICE

To provide an inkjet printing device with low costs capable of securing high printing stability even when ink has a high dissolved oxygen concentration.SOLUTION: An inkjet printing device includes: a non-use time measurement unit 43 that measures a time during which printing is not continuously performed; a temperature measurement unit 44 that measures a temperature in the periphery; an ink consumption measurement unit 45 that measures an ink consumption; and a head control unit 46 that changes a drive frequency of an inkjet head 31 on the basis of each of a measurement value of the non-use time measurement unit, a measurement value of the temperature measurement unit 44, and a measurement value of the ink consumption measurement unit 45. The non-use time measurement unit 43 cumulatively measures a time during which printing is not continuously performed and initializes the time in association with replacement of an ink bottle for supplying ink.SELECTED DRAWING: Figure 5 【課題】インクの溶存酸素量が多くても高い印字安定性を確保できるコストの安いインクジェット印刷装置を提供する。【解決手段】印刷を継続して実施していない時間を計測する不使用時間計測部４３と、周囲の温度を計測する温度計測部４４と、インクの消費量を計測するインク消費量計測部４５と、不使用時間計測部の計測値と温度計測部４４の計測値とインク消費量計測部４５の計測値のそれぞれの値に基づいてインクジェットヘッド３１の駆動周波数を変更するヘッド制御部４６とを備え、不使用時間計測部４３は、印刷を継続して実施していない時間を累積して計測し、インクを供給するインクボトルの交換に対応させて上記の時間を初期化する。【選択図】図５