| 摘要 |
A liquid jet head and apparatus prevent an increase in the viscosity of liquid in the liquid path during long term storage. The recording head has a liquid path unit 1 with nozzle openings 8 , pressure generation chambers 7 , liquid reservoirs 9 , and a diaphragm 5 , and a head case 2 bonded to the liquid path unit 1 . A damper chamber 12 for releasing pressure change inside the liquid reservoir is formed at a part of the head case or seal plate 5 corresponding to the liquid reservoir 9 . A release path 14 B for releasing pressure in the damper chamber to the air is formed in the head case. A control path 14 A communicating with the damper chamber and release path and having a specific flow resistance restricting dispersion of moisture vapor from the liquid is formed in the head case and/or seal plate. |
