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US 2019/0286015 A1Published application
Controlling ink developer voltages
AssigneeHP Indigo B.V.
InventorsEric G. Nelson, Yoav Nachmias, Vitaly Portnoy, Michel Assenheimer, Amiran Lavon
Life of this patent
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Abstract
Example implementations provide a method of controlling an ink developer used in electro-photography; the method comprising, following cessation of printing, varying a plurality of voltages associated with movement of ink within the ink developer at temporally disparate times.
Claims20
A printer for printing to a substrate;
- the printer comprising an ink developer;
- the ink developer comprising a plurality of members operable in response to a plurality of voltages to influence forming an image;
- the printer comprising circuitry, responsive to cessation of printing, to vary at least one voltage of the plurality of voltages in a temporally offset manner relative to at least one other voltage of the plurality of voltages to influence ink movement associated with at least one member of the plurality of members;
- wherein the plurality of members comprises a squeegee roller and the circuitry to vary at least one voltage of the plurality of voltages comprises circuitry to vary a squeegee roller voltage, associated with the squeegee roller of the ink developer.
1 more element
A printer for printing to a substrate;
- the printer comprising an ink developer;
- the ink developer comprising a plurality of members operable in response to a plurality of voltages to influence forming an image;
- the printer comprising circuitry, responsive to cessation of printing, to vary at least one voltage of the plurality of voltages in a temporally offset manner relative to at least one other voltage of the plurality of voltages to influence ink movement associated with at least one member of the plurality of members;
- and
- a cleaner roller and circuitry to maintain a cleaner roller voltage of the plurality of voltages relative to the at least one other voltage of the plurality of voltages to influence transfer of ink to the cleaner roller from the at least one member of the plurality of members.
2 more elements
A printer for printing to a substrate;
- the printer comprising an ink developer;
- the ink developer comprising a plurality of members operable in response to a plurality of voltages to influence forming an image;
- the printer comprising circuitry, responsive to cessation of printing, to vary at least one voltage of the plurality of voltages in a temporally offset manner relative to at least one other voltage of the plurality of voltages to influence ink movement associated with at least one member of the plurality of members;
- wherein the plurality of members comprises a developer roller and the circuitry to vary the electrode voltage comprises circuitry to reduce the potential difference between the electrode voltage and a developer roller voltage associated with the developer roller of the ink developer.
1 more element
A controller for a printing device for printing to a medium;
- the printing device comprising at least one ink developer;
- the ink developer comprising a developer roller, responsive to respective developer roller voltage;
- the controller comprising circuitry to manage at least one other voltage associated with at least one further member of the ink developer relative to the developer roller voltage to influence movement of ink within the ink developer;
- wherein the at least one further member is a cleaner roller and the at least one other voltage is an associated cleaner roller voltage.
1 more element
Dependencies are inferred from the claim text.