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US 2009/0213171 A1Published application
Ink jet recording apparatus
AssigneeCanon Kabushiki Kaisha
InventorHaruo Uchida
Life of this patent
Estimating the term…
Abstract
An ink jet recording apparatus incorporating a plurality of ink tanks that is independently exchangeable. An amount of ink suction for a suction recovery operation is changed and controlled based on the ink tank being exchanged. In this way, a small-sized apparatus operating at a low running cost is possible by saving and decreasing the ink amount discharged by controlling the ink discharge more than necessary during the suction recovery process after exchanging the ink tank.
Claims6
An ink jet recording apparatus, comprising:
- a carriage mounting a recording head having a discharge port portion and a plurality of ink tanks including a first ink tank and a second ink tank each containing ink, the recording head further having a first ink duct connecting the first ink tank to the discharge port portion and a second ink duct connecting the second ink tank to the discharge port portion, wherein length or volume of the first and second ink ducts are different with each other;
- a cap operable to cap the discharge port portion;
- and
- a generating unit connected to the cap, operable to suck ink from the discharge port portion by supplying negative pressure inside the cap capping the discharge port portion after one of the first and the second ink tanks is exchanged,
- wherein an amount of suction inside the cap capping the discharge port portion is changed depending on the length or the volume of one of the first and the second ink ducts corresponding to one of the first and the second ink tanks being exchanged.
2 more elements
An ink jet recording apparatus, comprising:
- a carriage mounting a recording head having a first discharge port portion having a first diameter and a second discharge port portion having a second diameter different from the first diameter, and a plurality of ink tanks including a first ink tank and a second ink tank each containing ink, the recording head further having a first ink duct connecting the first ink tank to the first discharge port portion and a second ink duct connecting the second ink tank to the second discharge port portion;
- a cap operable to cap the first and the second discharge port portions;
- and
- a generating unit connected to the cap, operable to suck ink from the discharge port portions by supplying negative pressure inside the cap capping the discharge port portions after one of the first and the second ink tanks is exchanged,
- wherein an amount of suction inside the cap capping the discharge port portions is changed depending on the diameter of one of the first and the second discharge port portion corresponding to one of the first and the second ink tanks being exchanged.
2 more elements
An ink jet recording apparatus, comprising:
- a carriage mounting a recording head having a discharge port portion and a plurality of ink tanks including a first ink tank and a second ink tank each containing ink, the recording head further having a first ink duct connecting the first ink tank to the discharge port portion and a second ink duct connecting the second ink tank to the discharge port portion, wherein the first and the second ink tanks contain different type of ink with each other;
- a cap operable to cap the discharge port portion;
- and
- a generating unit connected to the cap, operable to suck ink from the discharge port portion by supplying negative pressure inside the cap capping the discharge port portion after one of the first and the second ink tanks is exchanged,
- wherein an amount of suction inside the cap capping the discharge port portion is changed depending on the type of ink corresponding to one of the first and the second ink tanks being exchanged.
2 more elements
An ink jet recording apparatus, comprising:
- a recording head having a discharge port portion;
- a plurality of ink tanks including at least a first ink tank and a second ink tank each containing ink;
- a first ink duct connecting the first ink tank to the discharge port portion and a second ink duct connecting the second ink tank to the discharge port portion, wherein length or volume of the first and second ink ducts are different with each other;
- a cap operable to cap the discharge port portion;
- and
- a generating unit connected to the cap, operable to suck ink from the discharge port portion by supplying negative pressure inside the cap capping the discharge port portion after one of the first and the second ink tanks is exchanged,
- wherein an amount of suction inside the cap capping the discharge port portion is changed depending on the length or the volume of one of the first and the second ink ducts corresponding to one of the first and the second ink tanks being exchanged.
4 more elements
Dependencies are inferred from the claim text.