Ink jet cartridge with an ink tank having an ink outlet in a sloped surface
AssigneeCanon Kabushiki Kaisha
InventorsTetsuto Kageyama, Shigeru Yoshimura, Eiichi Motai
Life of this patent
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Abstract
A sloped surface is provided inside an ink tank of an exchangeable ink jet head cartridge arranged in a scan-type ink jet apparatus. An acceleration of the ink jet head cartridge scanned for recording and an inertia of ink are utilized to allow the ink to climb the slope, whereby the ink can be favorably supplied to a recording head.
Claims14
An exchangeable ink jet cartridge for mounting on a scanning carriage of an ink jet apparatus comprising a recording head portion having a discharging port for discharging ink, wherein said cartridge includes:
- an ink tank portion having a sloped surface inclined at a predetermined angle to a scanning direction of said carriage, said sloped surface having an opening section communicating with an ink supply path for supplying ink from said ink tank portion to said recording head portion;
- and
- a negative pressure generating member provided in said ink supply path.
An exchangeable ink jet cartridge for mounting on a scanning carriage of an ink jet apparatus comprising a recording head portion having a discharging port for discharging ink, wherein said cartridge includes:
- an ink tank portion having a sloped surface with two surfaces inclined at predetermined angles to a scanning direction of said carriage and meeting at an apex, said sloped surface having an opening section at said apex communicating with an ink supply path for supplying ink from said ink tank portion to said recording head portion;
- and
- a negative pressure generating member provided in said ink supply path.
An ink jet recording apparatus comprising:
- a recording head portion having a discharging port for discharging ink;
- an exchangeable ink jet cartridge for mounting on a scanning carriage of said ink jet apparatus, said cartridge including an ink tank portion having a sloped surface inclined at a predetermined angle to a scanning direction of said carriage, said sloped surface having an opening section communicating with an ink supply path for supplying ink from said ink tank portion to said recording head portion, a negative pressure generating member provided in said ink supply path, and an atmosphere communicating port for communicating said ink tank portion with the atmosphere;
- and
- an engaging portion for opening said atmosphere communicating port only when said ink jet cartridge is mounted on said scanning carriage.
An ink jet recording apparatus comprising:
- a recording head portion having a discharging port for discharging ink;
- an exchangeable ink jet cartridge for mounting on a scanning carriage of said ink jet apparatus, said cartridge including an ink tank portion having a sloped surface with two surfaces inclined at predetermined angles to a scanning direction of said carriage and meeting at an apex, said sloped surface having an opening section at said apex communicating with an ink supply path for supplying ink from said ink tank portion to said recording head portion, a negative pressure generating member provided in said ink supply path, and an atmosphere communicating port for communicating said ink tank portion with the atmosphere;
- and
- an engaging portion for opening said atmosphere communicating port only when said ink jet cartridge is mounted on said scanning cartridge.
Dependencies are inferred from the claim text.