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US 7,063,414 B2Granted
Ink jet recording apparatus
AssigneeToshiba Tec Kabushiki Kaisha
InventorTakashi Harakawa
Life of this patent
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Abstract
An ink jet recording apparatus in which a filter F for ink filtration is slanted to a horizontal surface and provided in an ink supply channel communicating with an ink supply port of an ink jet head in a position higher than the ink supply port. In this arrangement, bubbles moved from the ink jet head are collected to a part of the periphery of the filter and easily passed through holes of the filter. As spread and stay of bubbles can be prevented, the ink can be supplied in a stable manner, and further, the occurrence of ink discharge failure can be reliably suppressed.
Claims6
An ink jet recording apparatus, comprising:
- an ink container containing ink;
- an ink jet head, which includes an ink supply port communicating with the ink container via an ink supply channel, to discharge the ink from a nozzle as ink droplets;
- and
- a filter unit, which is provided in the ink supply channel at a position higher than the ink supply port of the ink jet head, and which comprises a filter that includes a plurality of through holes to filter the ink flowing through the ink supply channel;
- wherein the filter is slanted in the filter unit with respect to a horizontal surface and is formed by a metal plating process to guide bubbles generated under the filter, downstream of the filter in an ink flowing direction, to a peripheral section of the filter;
- and
- wherein the bubbles collected at the peripheral section pass upward through the filter.
4 more elements
Dependencies are inferred from the claim text.