Liquid spraying 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.
Claims5
A removable liquid spraying cartridge housed in a liquid spraying apparatus, the liquid spraying apparatus effective to spray a recording liquid to an object to make a recording on the object, the removable liquid spraying cartridge comprising:
- a liquid container configured to contain the recording liquid;
- the recording liquid therein;
- and
- a spraying means which (1) guides the recording liquid from the liquid container to a nozzle via a channel in which a silicon-containing material is exposed and (2) sprays the recording liquid as droplets from the nozzle,
- wherein,
- the recording liquid comprises 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.
Dependencies are inferred from the claim text.