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US 4,542,391 AGranted
Ink jet recording head
AssigneeCanon Kabushiki Kaisha
InventorAkira Miyagawa
Life of this patent
Estimating the term…
Abstract
An ink jet recording head is constructed with a liquid droplet discharging device, a feeding path for supplying ink to the liquid droplet discharging device, and a flow path resistance adjusting section formed in one part of the ink feeding path to increase the flow path resistance in the ink feeding path due to a rise in temperature and to decrease the flow path resistance in the ink feeding path due to a fall in the temperature.
Claims8
An ink jet recording head, comprising:
- liquid droplet discharging means for discharging ink liquid droplets upon application of electrical signals;
- an ink feeding path for supplying ink to said liquid droplet discharging means;
- and
- a flow path resistance adjusting section including a tubular member having a free end provided within a part of said ink feeding path located at or proximate to said liquid droplet discharging means for increasing the flow resistance in said part of said ink feeding path due to a rise in the ink temperature and decreasing the flow resistance in said part of said ink feeding path due to a decrease in the ink temperature by varying the cross-sectional area of said free end of said tubular member with temperature changes.
1 more element
An ink jet recording head, comprising:
- a discharge opening section for discharging ink in the form of droplets;
- a liquid chamber for accepting ink from an ink feeding source and providing the ink to said discharge opening section;
- and
- a tubular member in said liquid chamber located at or proximate to said discharge opening section, said tubular member having one end thereof fixed in said chamber and the other end thereof free, wherein said free end becomes narrower with an increase in temperature and wider with a decrease in temperature.
1 more element
Dependencies are inferred from the claim text.