LIQUID DISCHARGE DEVICE

To shorten a time required for discharging a liquid to a medium to be discharged as much as possible while sufficiently supplying the liquid to a liquid discharge head.SOLUTION: Limit processing for reducing an ink discharge quantity per unit time in a recording pass is executed when a duty D, which...

Full description

Saved in:
Bibliographic Details
Main Author HAYASHI MASAYOSHI
Format Patent
LanguageEnglish
Japanese
Published 07.10.2021
Subjects
CORRECTION OF TYPOGRAPHICAL ERRORS
i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME
LINING MACHINES
PERFORMING OPERATIONS
PRINTING
SELECTIVE PRINTING MECHANISMS
STAMPS
TRANSPORTING
TYPEWRITERS
Online AccessGet full text

Cover

More Information
Summary:To shorten a time required for discharging a liquid to a medium to be discharged as much as possible while sufficiently supplying the liquid to a liquid discharge head.SOLUTION: Limit processing for reducing an ink discharge quantity per unit time in a recording pass is executed when a duty D, which is indicated by image data corresponding to the recording pass is higher than a threshold D1. In such a printer, when an instruction signal for instructing performance of suction purge is inputted by a user, discharge determination processing is executed (S201) before performance of the suction purge. It is estimated that under-refilling due to poor supply of an ink to an ink jet head occurs on the basis of the result of the discharge determination processing when a prescribed number of nozzles, which are continuously arranged and include a farthest nozzle from an ink supply port of a nozzle array, are non-discharge nozzles (S202: YES, S203: YES), and the threshold D1 is decreased (S206).SELECTED DRAWING: Figure 8 【課題】液体吐出ヘッドに液体を十分に供給しつつ、被吐出媒体への液体の吐出に必要な時間を極力短くする。【解決手段】記録パスに対応する画像データが示すデューティＤが閾値Ｄ１よりも高いときに、記録パスにおける単位時間当たりのインクの吐出量を減らす制限処理を実行する。このようなプリンタにおいて、ユーザにより、吸引パージを行うことを指示する指示信号が入力されたときに、吸引パージを行わせる前に、吐出判定処理を実行する（Ｓ２０１）。そして、吐出判定処理の結果に基づいて、ノズル列のインクの供給口から最も遠いノズルを含む連続して並ぶ所定個のノズルが不吐出ノズルである場合には（Ｓ２０２：ＹＥＳ，Ｓ２０３：ＹＥＳ）、インクジェットヘッドへのインクの供給不足であるアンダーリフィルが発生していると推定し、閾値Ｄ１を小さくする（Ｓ２０６）。【選択図】図８
Bibliography:Application Number: JP20200059466