Ricoh Company, Ltd.

Pallavi Premkumar

Mikel J Stanich

Nikita Gurudath

Ziling Zhang

Scott Richard Johnson

Walter F Kailey

William Edward Manchester

James Anthony Chauvin

Burke Larsen

A printing system is disclosed. The printing system includes at least one physical memory device to store calibration logic and one or more processors coupled with the at least one physical memory device to execute the calibration logic to receive a first printer transfer function, receive a first print substrate transfer function associated with a first print substrate and generate a composite transfer function based on a function composition operation of the first print substrate transfer function and the first printer transfer function.

Printer calibration mechanism

A printing system is disclosed. The printing system includes at least one physical memory device to store ink model estimation logic and one or more processors coupled with the at least one physical memory device to execute the ink model estimation logic to receive a first plurality of ink deposition curves each associated with one of a plurality of primary color inks of a print system, wherein the associated primary color inks in combination represent a first secondary color, receive a color space mapping profile for the print system, wherein the color space mapping profile characterizes a relationship between a first color space and a printer color space of the print system and generate a color space ink model for the first secondary color based on the first plurality of ink deposition curves and the color space mapping profile, wherein the color space ink model represents a relationship between each of a plurality of parameters of the first color space and ink deposition.

Color space ink model generation mechanism

A printing system is disclosed. The printing system includes at least one physical memory device to store calibration logic and one or more processors coupled with the at least one physical memory device to execute the calibration logic to receive a reference halftone design, receive reference ink drop size data, receive a reference printer transfer function corresponding to the reference halftone design, a reference printer response target and a reference print substrate, receive first print measurement data corresponding to the reference halftone design, the reference printer transfer function and a first print substrate, receive first printer response target, generate a first intermediate print substrate transfer function based on the first print measurement data and the first printer response target, generate a first printer transfer function based on the first intermediate print substrate transfer function, the reference halftone design, the reference ink drop size data and the reference printer transfer function and generate a first print substrate transfer function as an approximation of a function with input values determined as the first printer transfer function evaluated at digital count values and output values determined as the composition of the first intermediate print substrate transfer function and the reference printer transfer function evaluated at the digital count values, wherein a transfer function comprises a mapping of an input digital count to an output digital count.

A printing system is disclosed. The printing system includes at least one physical memory device to store drop size logic and one or more processors coupled with the at least one physical memory device to execute the drop size logic to generate drop size data associated with a printing system based on ink deposition data for a print medium and ink drop count data.

Ink model generation mechanism

A printing system is disclosed. The printing system includes at least one physical memory device to store ink model estimation logic and one or more processors coupled with the at least one physical memory device to execute the ink model estimation logic to receive an ink deposition curve for one of a plurality of primary color inks of a print system, receive a color space mapping profile for the print system wherein the color space mapping profile characterizes a relationship between a first color space and a printer color space of the print system and generate a color space ink model for the one of a plurality of primary color inks of the print system based on the ink deposition curve and the color space mapping profile, wherein the color space ink model represents a relationship between each of a plurality of parameters of the first color space and ink deposition.

A printing system is disclosed. The printing system includes at least one physical memory device to store ink model estimation logic and one or more processors coupled with the at least one physical memory device to execute the ink model estimation logic to generate color space ink model parameter data for a print system based on an ink deposition data and color space measurement data for one of a plurality of inks for the print system.

A printing system is disclosed. The printing system includes at least one physical memory device to store ink model logic and one or more processors coupled with the at least one physical memory device to execute the ink model logic to generate first ink model parameter data for a first print medium based on first ink deposition data for a second print medium and first optical density measurement data for the first print medium.

A system is disclosed. The system at least one physical memory device to store ink estimation logic and one or more processors coupled with the at least one physical memory device, to execute the ink estimation logic to receive a histogram for each of a plurality of color planes, receive uncalibrated drop fraction data for each of a plurality of drop sizes in a printing system, perform a direct drop fraction conversion of the uncalibrated drop fraction data to generate calibrated drop fraction data for each of the plurality of drop sizes by applying a first transfer function to the uncalibrated drop fraction data and generate estimated ink usage data for each of the plurality of drop sizes based on the histograms and the calibrated drop fraction data.

Growing community of inventors

Boulder, CO, United States of America

Pallavi Premkumar