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US 8,075,124 B2Granted
Liquid cartridge containing a recording liquid having a pH of over 4 and under 6
AssigneeSony Corporation
InventorsYasuhiro Tanaka, Toshio Fukuda, Masato Nakamura
Life of this patent
Estimating the term…
Abstract
An ink containing a hydrophobic colloid charged with a positive zeta potential when the pH of the ink is within a range of over 4 and under 6. Silicon or silicon compound can be limited from being eluted into the ink from a circuit board formed from a silicon wafer or the like. Additionally, silicon or silicon compound, if eluted into the ink can be prevented from being deposited on a resistance heater and causing “cogation”, or to prevent the silicon or silicon compound from being deposited in an ink channel and nozzle to clog the nozzle.
Claims3
A liquid cartridge comprising:
- a spraying means for spraying a recording liquid in the form of droplets;
- a removable cartridge configured to contain the recording liquid and housed in the spraying means;
- and
- the recording liquid therein
- wherein,
- the spraying means guides the recording liquid to a nozzle through a channel in which silicon material is exposed,
- the recording liquid includes a pigment, a solvent in which the pigment is dispersed, and a hydrophobic colloid that is charged with a positive zeta potential, and
- the recording liquid has a pH range of 4 to 6.
5 more elements
Dependencies are inferred from the claim text.