Determination of remaining life of photoconductor
AssigneeHewlett-Packard Development Company, L.P.
InventorKi Youn Lee
Life of this patent
Estimating the term…
Abstract
An example image forming apparatus includes a charger, a developing device, a sensor, and a controller. The charger may apply a plurality of charging voltages to a photoconductor, the plurality of charging voltages having different magnitudes and respectively corresponding to a plurality of area sections constituting a test pattern and the developing device may supply a developer to the photoconductor. The sensor may sense an image formed by the supplied developer and corresponding to the test pattern. The controller may determine a remaining lifetime of the photoconductor based on the image corresponding to the test pattern.
Claims20
An image forming apparatus comprising:
- a charger to apply a plurality of charging voltages to a photoconductor, the plurality of charging voltages having different magnitudes and respectively corresponding to a plurality of area sections;
- a developing device to supply a developer to the photoconductor;
- a sensor to sense a background defect formed by the supplied developer and corresponding to the area section, the background defect formed on one of the photoconductor or an intermediate transfer medium;
- and
- a controller to provide information for a remaining lifetime of the photoconductor or a replacement time based on the corresponding area section wherein the background defect is formed.
A method of determining a remaining lifetime of a photoconductor, the method comprising:
- applying a plurality of charging voltages to a photoconductor, the plurality of charging voltages having different magnitudes and respectively corresponding to a plurality of area sections;
- supplying a developer to the photoconductor;
- sensing a background defect formed by the supplied developer and corresponding to the area section, the background defect formed on one of the photoconductor or an intermediate transfer medium;
- and
- providing information for a remaining lifetime of the photoconductor or a replacement time based on the area section wherein the background defect is formed.
An image forming apparatus comprising:
- a charger to apply a plurality of charging voltages to a photoconductor, the plurality of charging voltages having different magnitudes and respectively corresponding to a plurality of area sections between a front end and a rear end of a test pattern;
- a developing device to supply a developer to the photoconductor;
- a sensor to sense a background defect formed by the supplied developer and corresponding to the area section;
- and
- a controller to provide information for a remaining lifetime of the photoconductor or a replacement time based on the corresponding area section wherein the background defect is formed.
Dependencies are inferred from the claim text.