| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid injection head unit capable of uniformizing the discharge characteristics of liquid droplets discharged from respective nozzle openings by uniformizing the temperatures of the liquid droplets discharged from respective nozzle openings even if respective liquid flow passages through which storage means for storing liquids are connected to the nozzle openings through which the liquid is injected, are different in length. SOLUTION: The liquid injection head unit includes: a plurality of head main bodies 10 that jet liquid droplets from the nozzle openings 34 by applying pressure by a pressure producing means to liquid in pressure producing chambers 21 communicating with the plurality of nozzle openings 34; a plurality of liquid flow passages which are formed for each of the head main bodies 10, and includes the pressure producing chambers 21, and through which the nozzle openings 34 are connected to the storage means (ink cartridge 100) storing the liquid to be supplied to the pressure producing chambers 21; a plurality of heating means (heating layers 330) which are disposed near respective liquid flow passages and used for heating the liquids flowing in the liquid flow passages; and a control section 50 for controlling the heating means. COPYRIGHT: (C)2009,JPO&INPIT
|
