Patents by Inventor Ziling Zhang
Ziling Zhang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11636296Abstract: A system is disclosed. The system includes at least one physical memory device to store compensation logic and one or more processors coupled with the at least one physical memory device to execute the compensation logic to generate inverse transfer functions for each of a plurality of color planes to compensate for non-functioning pel forming elements based on ink deposition functions for groups of pel forming elements including functioning pel forming elements and the non-functioning pel forming elements, wherein the inverse transfer functions transform output digital counts and the ink deposition functions represent output ink amount versus input digital count and generate compensated halftones for each of a plurality of color planes based on the inverse transfer functions.Type: GrantFiled: March 1, 2022Date of Patent: April 25, 2023Assignee: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Nikita Gurudath, Ziling Zhang, Brandon Skogen
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Publication number: 20230120258Abstract: A system is disclosed. The system includes at least one physical memory device to store compensation logic and one or more processors coupled with the at least one physical memory device to execute the compensation logic to generate first ink deposition function representing a first output ink amount versus input digital count for each of a plurality of color planes without pel forming element artifacts, generate second ink deposition function representing a second output ink amount versus input digital count for each of the plurality of color planes with the pel forming element artifacts and generate compensated halftones for each of the plurality of color planes based on the first ink deposition function and the second ink deposition function.Type: ApplicationFiled: October 20, 2021Publication date: April 20, 2023Applicant: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Nikita Gurudath, Ziling Zhang, Brandon Skogen
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Publication number: 20230123461Abstract: A system is disclosed. The system includes at least one physical memory device to store compensation logic and one or more processors coupled with the at least one physical memory device to execute the compensation logic to generate first ink deposition function representing a first output ink amount versus input digital count for each of a plurality of color planes, generate second ink deposition function representing a second output ink amount versus input digital count for each of the plurality of color planes and generate transfer functions for each of the plurality of color planes based on the first ink deposition function and the second ink deposition function, wherein the transfer functions transform input digital counts.Type: ApplicationFiled: October 20, 2021Publication date: April 20, 2023Applicant: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Nikita Gurudath, Ziling Zhang, Brandon Skogen
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Patent number: 11632487Abstract: A printing system is disclosed.Type: GrantFiled: March 1, 2022Date of Patent: April 18, 2023Assignee: Ricoh Company, Ltd.Inventors: Soraya Terrab, Mikel Stanich, Ziling Zhang, Nikita Gurudath, Walter F. Kailey, James Chauvin
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Patent number: 11630975Abstract: A printing system is disclosed.Type: GrantFiled: March 1, 2022Date of Patent: April 18, 2023Assignee: Ricoh Company, Ltd.Inventors: Soraya Terrab, Mikel Stanich, Ziling Zhang, Nikita Gurudath, Walter F. Kailey, James Chauvin
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Patent number: 11584120Abstract: A printing system is disclosed. The printing system includes at least one physical memory device to store uniformity compensation logic and one or more processors coupled with the at least one physical memory device to execute the uniformity compensation logic to receive print image measurement data corresponding with each of a plurality of pel forming elements, generate a first set of intermediate images based on the print image measurement data, determine whether historical sets of intermediate images are available, generate first transfer functions corresponding to each of the pel forming elements based on the first set of intermediate images and the historical sets of intermediate images upon a determination that the historical sets of intermediate images are available and transmit the first transfer functions for each of the pel forming elements.Type: GrantFiled: March 9, 2021Date of Patent: February 21, 2023Assignee: Ricoh Company, Ltd.Inventors: Scott R. Johnson, Ziling Zhang
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Patent number: 11570311Abstract: A printing system is disclosed. The printing system includes at least one physical memory device to store nozzle correction logic and one or more processors coupled with at least one physical memory device to execute the nozzle correction logic to receive a uniformity compensated halftone design for each of a plurality of pel forming elements, receive an average missing neighbor threshold lowering function, receive a defective nozzles list including one or more of the plurality of pel forming elements indicated as defective during print production and perform missing neighbor processing by applying the average missing neighbor threshold lowering function associated with a pel forming element determined to be a neighbor of a defective pel forming element.Type: GrantFiled: March 5, 2021Date of Patent: January 31, 2023Assignee: Ricoh Company, Ltd.Inventors: Walter F. Kailey, Nikita Gurudath, Mikel Stanich, William Manchester, Ziling Zhang
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Patent number: 11539857Abstract: 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 generate a uniformity compensated halftone design for each of a plurality of pel forming elements, generate a missing neighbor corrected halftone design for each of the pel forming elements, generate a missing neighbor threshold lowering function for each of the pel forming elements based on the uniformity compensated halftone designs and the missing neighbor corrected halftone design and compute an average of the missing neighbor threshold lowering functions to generate an average missing neighbor threshold lowering function.Type: GrantFiled: March 5, 2021Date of Patent: December 27, 2022Assignee: Ricoh Company, Ltd.Inventors: Walter F Kailey, Nikita Gurudath, Mikel Stanich, William Manchester, Ziling Zhang
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Patent number: 11475260Abstract: 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.Type: GrantFiled: February 2, 2021Date of Patent: October 18, 2022Assignee: Ricoh Company, Ltd.Inventors: Mikel Stanich, Nikita Gurudath, Pallavi Premkumar, Ziling Zhang, Burke Larsen
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Publication number: 20220288920Abstract: A printing system is disclosed. The printing system includes at least one physical memory device to store uniformity compensation logic and one or more processors coupled with the at least one physical memory device to execute the uniformity compensation logic to receive print image measurement data corresponding with each of a plurality of pel forming elements, generate a first set of intermediate images based on the print image measurement data, determine whether historical sets of intermediate images are available, generate first transfer functions corresponding to each of the pel forming elements based on the first set of intermediate images and the historical sets of intermediate images upon a determination that the historical sets of intermediate images are available and transmit the first transfer functions for each of the pel forming elements.Type: ApplicationFiled: March 9, 2021Publication date: September 15, 2022Applicant: Ricoh Company, Ltd.Inventors: Scott R. Johnson, Ziling Zhang
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Publication number: 20220288945Abstract: A printing system is disclosed. The printing system includes at least one physical memory device to store nozzle correction logic and one or more processors coupled with at least one physical memory device to execute the nozzle correction logic to receive a uniformity compensated halftone design for each of a plurality of pel forming elements, receive an average missing neighbor threshold lowering function, receive a defective nozzles list including one or more of the plurality of pel forming elements indicated as defective during print production and perform missing neighbor processing by applying the average missing neighbor threshold lowering function associated with a pel forming element determined to be a neighbor of a defective pel forming element.Type: ApplicationFiled: March 5, 2021Publication date: September 15, 2022Applicant: Ricoh Company, Ltd.Inventors: Walter F. Kailey, Nikita Gurudath, Mikel Stanich, William Manchester, Ziling Zhang
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Publication number: 20220286579Abstract: 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 generate a uniformity compensated halftone design for each of a plurality of pel forming elements, generate a missing neighbor corrected halftone design for each of the pel forming elements, generate a missing neighbor threshold lowering function for each of the pel forming elements based on the uniformity compensated halftone designs and the missing neighbor corrected halftone design and compute an average of the missing neighbor threshold lowering functions to generate an average missing neighbor threshold lowering function.Type: ApplicationFiled: March 5, 2021Publication date: September 8, 2022Applicant: Ricoh Company, Ltd.Inventors: Walter F. Kailey, Nikita Gurudath, Mikel Stanich, William Manchester, Ziling Zhang
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Publication number: 20220245415Abstract: 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.Type: ApplicationFiled: February 2, 2021Publication date: August 4, 2022Applicant: Ricoh Company, Ltd.Inventors: Mikel Stanich, Nikita Gurudath, Pallavi Premkumar, Ziling Zhang, Burke Larsen
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Publication number: 20220242110Abstract: 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.Type: ApplicationFiled: February 2, 2021Publication date: August 4, 2022Applicant: Ricoh Company, Ltd.Inventors: Mikel Stanich, Nikita Gurudath, Pallavi Premkumar, Ziling Zhang, Burke Larsen
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Patent number: 11368592Abstract: 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 generate a uniformity compensated transfer function for each of a plurality of pel forming elements, generate a missing neighbor corrected transfer function for each of the pel forming elements, generate a missing neighbor transfer function based on the uniformity compensated transfer functions and the missing neighbor corrected transfer function and compute an average of the missing neighbor transfer functions to generate an average missing neighbor transfer function.Type: GrantFiled: March 5, 2021Date of Patent: June 21, 2022Assignee: Ricoh Company, Ltd.Inventors: Walter .F Kailey, Nikita Gurudath, Mikel Stanich, William Manchester, Ziling Zhang
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Patent number: 11338591Abstract: A printing system is disclosed. The printing system includes at least one physical memory device to store nozzle correction logic and one or more processors coupled with at least one physical memory device to execute the nozzle correction logic to receive a uniformity compensated transfer function for each of a plurality of pel forming elements, receive an average missing neighbor transfer function, receive a defective nozzles list including one or more of the plurality of pel forming elements indicated as defective during print production; and perform missing neighbor processing by applying the average missing neighbor transfer function associated with the pel forming element determined to be a neighbor of a defective pel forming element.Type: GrantFiled: March 5, 2021Date of Patent: May 24, 2022Assignee: Ricoh Company, Ltd.Inventors: Walter .F Kailey, Nikita Gurudath, Mikel Stanich, William Manchester, Ziling Zhang
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Patent number: 11310379Abstract: Systems and methods are provided for reviewing printed jobs. On embodiment is a system comprising a print review device. The print review device includes a memory that stores an image of a test pattern printed by printheads of a printer, and a controller that generates a Graphical User Interface (GUI), for presentation at a display, depicting states of the printheads based on the image, receives input from a user selecting one of the printheads, correlates the printhead with a portion of the image, and presents the portion of the image for review at the GUI. The controller also identifies locations on the portion that are correlated with nozzles of the printhead, and selectively highlights the locations based on state information for the nozzles.Type: GrantFiled: March 8, 2021Date of Patent: April 19, 2022Assignee: Ricoh Company, Ltd.Inventors: Nathan Young, Ziling Zhang, Kara Larsen, Scott R. Johnson
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Patent number: 11283936Abstract: 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.Type: GrantFiled: December 18, 2020Date of Patent: March 22, 2022Assignee: Ricoh Company, Ltd.Inventors: Mikel Stanich, Nikita Gurudath, Pallavi Premkumar, Ziling Zhang
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Patent number: 11157786Abstract: A printing system is disclosed. The printing system includes at least one physical memory device to store uniformity compensation logic and one or more processors coupled with the at least one physical memory device to execute the uniformity compensation logic to receive print image measurement data corresponding with each of a plurality of pel forming elements, generate a first set of intermediate images based on the print image measurement data, determine whether historical sets of intermediate images are available, generate first transfer functions corresponding to each of the pel forming elements based on the first set of intermediate images and the historical sets of intermediate images upon a determination that the historical sets of intermediate images are available and transmit the first transfer functions for each of the pel forming elements.Type: GrantFiled: November 19, 2020Date of Patent: October 26, 2021Assignee: Ricoh Company, Ltd.Inventors: Nikita Gurudath, Ziling Zhang, Scott Johnson, Nathan Young
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Publication number: 20210183036Abstract: Systems and methods are provided for. One embodiment is a system that includes an interface configured to receive an image of media printed on with print data, and memory configured to store defect reference data of nozzles belonging to printheads of a printer. The system also includes a print defect controller configured to detect a nozzle defect in the image based on a comparison of the image with the print data, and to determine a type of the nozzle defect based on a comparison of the nozzle defect with the defect reference data.Type: ApplicationFiled: December 12, 2019Publication date: June 17, 2021Applicant: Ricoh Company, Ltd.Inventors: Nikita Gurudath, Scott R. Johnson, Nathan Young, Ziling Zhang