Reflective sensor sampling for tone reproduction control regulation
AssigneeXerox Corporation
InventorsEric M. GROSS, Palghat S. RAMESH, Thomas F. SHANE
Life of this patent
Estimating the term…
Abstract
A method of monitoring one or more patches in an image-processing device comprised of photoreceptor, a controller, and a sensor, includes obtaining specular readings and diffuse readings from the one or more patches and computing values received from the readings. In addition, the one or more patches are from about 0.1 mm to equal or less than the field of view of the sensor where each patch size, location, and approximate value is known; and an analysis of variance (ANOVA) is automatically conducted from the known size, location, and approximate value of each patch.
Claims18
A method of monitoring one or more patches, either in an inter-document zone or an image zone, in an image processing device comprised of a photoreceptor, a controller, and a sensor, comprising:
- obtaining specular readings and diffuse readings from the one or more patches;
- computing values received from the readings;
- and
- wherein the one or more patches are equal to or less than the field of view of the sensor;
- wherein each patch size, location, and approximate value is predetermined;
- and
- wherein detecting statistically significant differences is automatically conducted from the predetermined size, location, and approximate value of each patch.
A system for monitoring one or more patches, either in an inter-document zone or an image zone, in an image processing device, comprising:
- a photoreceptor;
- a raster output scanner (ROS);
- a sensor;
- a controller;
- and
- wherein the inter-document patches are from about 0.1 mm to equal to or less than the field of view of the sensor.
A method of regulating a xerographic marking device comprised of a photoreceptor, a controller, and a sensor, comprising:
- obtaining specular readings and diffuse readings from one or more inter-document patches or image patches;
- computing specular based developed mass per unit area (DMA) values and/or relative reflectance values;
- and
- adjusting one or more of the xerographic device's timing and toner image quality based on the information obtained from the one or more inter-document patches or image patches.
Dependencies are inferred from the claim text.