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A liquid sensing apparatus for a liquid container for supplying a liquid to a liquid consuming apparatus, and a liquid container equipped with the liquid sensing apparatus

A liquid container, liquid sensing technology, used in liquid/fluid solid measurement, mechanical equipment, measurement devices, etc., can solve problems such as influence and wrinkling, and achieve the effect of preventing stop, small evaporation, and changing acoustic impedance

Active Publication Date: 2007-10-17
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this proposal can sense the remaining amount of liquid with relatively high accuracy, because the rigid body is moved to follow the deformation of the flexible bag, it also faces the sensing of the remaining amount of ink contained in the flexible bag. Problems affected by deflection (or deformation: deflection), wrinkling, etc.

Method used

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  • A liquid sensing apparatus for a liquid container for supplying a liquid to a liquid consuming apparatus, and a liquid container equipped with the liquid sensing apparatus
  • A liquid sensing apparatus for a liquid container for supplying a liquid to a liquid consuming apparatus, and a liquid container equipped with the liquid sensing apparatus
  • A liquid sensing apparatus for a liquid container for supplying a liquid to a liquid consuming apparatus, and a liquid container equipped with the liquid sensing apparatus

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Embodiment Construction

[0055] The details of the invention will be explained below with reference to the illustrated embodiment.

[0056] 1A and 1B are diagrams each showing an embodiment of the liquid container of the present invention by taking an ink cartridge containing ink to be supplied to an inkjet recording apparatus as a liquid consuming apparatus as an example.

[0057] In this embodiment, the first case 10 and the second case 20 each constituted by a cartridge member forming a half case are combined into a case to form the ink cartridge 1 serving as a liquid container. A flexible film member 3 formed of a resin film or the like is welded to the periphery of the first case 10 by heat welding or the like, and hermetically covers an opening portion formed in the first case 10 so as to form a container for containing ink such as ink. Liquid storage area 2 for liquids. And, the periphery of the second case 20 is in pressure contact with the thermally welded portion of the flexible film member...

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Abstract

A liquid sensing apparatus includes a liquid sensing chamber 33 having a liquid inlet port that is in communication with an external liquid container in which a liquid is reserved, and a liquid outlet port that is in communication with a <,>liquid consuming apparatus, a movable member 34 movable depending on a liquid level in the liquid sensing chamber 33, a recess portion 33b, 41a for cooperating with a wall surface of the movable member 34 to form a closed space when the movable member 34 is moved to a predetermined position depending the liquid level, and a piezoelectric sensing means 40 for applying a vibration to the recess portion and sensing a state of a free vibration following upon the vibration.

Description

technical field [0001] The present invention relates to a liquid container for supplying a predetermined liquid to a liquid consuming device such as a liquid ejection head for ejecting minute liquid droplets, and more particularly to sensing liquid remaining Quantitative technology. Background technique [0002] Liquid ejection heads of commercial recording devices for ultra-high quality printing and liquid ejection heads of textile printing devices and micro-dispensers receive a supply of liquid from a liquid container. If the liquid ejection head is operated without a liquid supply, the liquid ejection head suffers damage due to a so-called blank shot. For this reason, the remaining amount of liquid in the liquid container must be monitored to prevent such damage. [0003] Taking a recording device as an example, various methods of sensing the amount of ink remaining in an ink cartridge, which serves as a liquid container, have been proposed. JP-A-2001-146030 proposes t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/175G01F23/00G01F23/14
Inventor 碓井稔越野一夫木村仁俊
Owner SEIKO EPSON CORP
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