发明授权
- 专利标题: Ink jet recording apparatus, ink supplying mechanism and ink jet recording method
- 专利标题(中): 喷墨记录装置,供墨机构和喷墨记录方法
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申请号: US12580954申请日: 2009-10-16
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公开(公告)号: US08205973B2公开(公告)日: 2012-06-26
- 发明人: Noboru Nitta , Masashi Shimosato , Hideaki Nishida , Isao Suzuki
- 申请人: Noboru Nitta , Masashi Shimosato , Hideaki Nishida , Isao Suzuki
- 申请人地址: JP Tokyo
- 专利权人: Toshiba Tec Kabushiki Kaisha
- 当前专利权人: Toshiba Tec Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Turocy & Watson, LLP
- 主分类号: B41J2/175
- IPC分类号: B41J2/175
摘要:
An ink jet recording apparatus according to an embodiment of the invention includes an ink jet head having a pressure chamber facing a nozzle, and an upstream port and a downstream port connected to the pressure chamber, a main tank connected to the ink jet head via the upstream port and capable of storing ink therein, and a sub-tank connected to the ink jet head via the downstream port and capable of storing ink, wherein at least when printing by ejecting ink from the nozzle, the relation between ph, r, R and Q is held to satisfy ph−{QR×(1/(1+r))}=Pn (Pn being a constant representing a proper pressure in the nozzle), where ph represents a potential pressure in the main tank as viewed from a surface of an orifice plate where the nozzle of the ink jet head is formed, R represents a total flow path resistance from the main tank to the sub-tank via the ink jet head, a ratio of a flow path resistance from the main tank to the nozzle and a flow path resistance from the nozzle to the sub-tank is expressed by 1:r, and Q represents a flow rate of ink that circulates in a circulation path formed by connecting the ink jet head, the main tank and the sub-tank.
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