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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Publication number: 20240109334Abstract: A printing system is disclosed. The printing system includes at least one physical memory device to store defective print element determination logic and one or more processors coupled with the at least one physical memory device to execute the defective print element determination logic to receive a print image comprising evaluation marks and locator marks applied to a print medium by a plurality of pel forming elements according to print instructions and identify pel forming elements associated with print defect pels in the print image among the plurality of pel forming elements based on the evaluation marks, the locator marks and the print instructions.Type: ApplicationFiled: September 29, 2022Publication date: April 4, 2024Applicant: Ricoh Company, Ltd.Inventors: Jiwon Gim, Scott R. Johnson, Ziling Zhang, Mikel Stanich
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Patent number: 11900189Abstract: A printing system is disclosed. The printing 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 receive measurement data corresponding to a print medium printed with a plurality of non-functioning pel forming elements, a plurality of functioning pel forming elements and a plurality of tint levels; wherein adjacent ones of the plurality of functioning pel forming elements print with compensation transfer functions applied and are located adjacent to the plurality of non-functioning pel forming elements, associate measurement data with the plurality of non-functioning pel forming elements, the compensation transfer functions and the plurality of tint levels and determine optimal compensation by selecting the compensation transfer functions that have corresponding measurement data values closest to compensation target values for each of the plurality of tint levels.Type: GrantFiled: February 21, 2023Date of Patent: February 13, 2024Assignee: Ricoh Company, Ltd.Inventors: Ziling Zhang, Farnaz Hajiahmadi Foomani, Mikel Stanich
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Patent number: 11900187Abstract: A printing system is disclosed. The printing 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 receive measurement data corresponding to a print medium printed with a plurality of pel forming elements in adjacent printheads and a plurality of tint levels, wherein the plurality of pel forming elements comprise gap adjacent pel forming elements that print with applied compensation halftone design and non-gap adjacent pel forming elements, associate measurement data values with the gap adjacent pel forming elements, the applied compensation halftone design and the plurality of tint levels and determine optimal compensation by selecting the compensation halftone design that has corresponding measurement data values closest to compensation target values for each of the plurality of tint levels.Type: GrantFiled: March 2, 2023Date of Patent: February 13, 2024Assignee: Ricoh Company, Ltd.Inventors: Ziling Zhang, Farnaz Hajiahmadi Foomani, Mikel Stanich
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Patent number: 11831844Abstract: 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 transfer functions for each of a plurality of color planes to compensate for overlapping pel forming elements of adjacent printheads, wherein the transfer functions are generated based on ink deposition functions for groups of pel forming elements including non-overlapping pel forming elements and the overlapping pel forming elements, wherein the transfer functions transform input digital counts, and wherein the ink deposition functions represent output ink amount versus input digital count.Type: GrantFiled: March 1, 2022Date of Patent: November 28, 2023Assignee: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Nikita Gurudath, Ziling Zhang, Brandon Skogen
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Patent number: 11818318Abstract: 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 transfer functions for each of a plurality of color planes to compensate for non-functioning pel forming elements, wherein the transfer functions are generated 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 transfer functions transform input digital counts and the ink deposition functions represent output ink amount versus input digital count.Type: GrantFiled: March 1, 2022Date of Patent: November 14, 2023Assignee: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Nikita Gurudath, Ziling Zhang, Brandon Skogen
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Publication number: 20230351583Abstract: 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: July 4, 2023Publication date: November 2, 2023Applicant: Ricoh Company, Ltd.Inventors: Nikita Gurudath, Scott R. Johnson, Nathan Young, Ziling Zhang
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Patent number: 11797166Abstract: Systems and methods are provided for reporting printhead conditions. One embodiment is a system that includes a user interface, a display, and a controller configured to present a Graphical User Interface (GUI) via the display. The GUI includes a first area depicting an array of printheads. Each printhead of the array is represented by a first visual indicator that signifies a frequency of printhead conditions detected at that printhead over a period of time. In response to receiving a selection of at least one of the printheads via the user interface, the controller presents a second area of the GUI via the display. The second area depicts locations of printhead conditions detected at the selection over the period of time. Each of the locations is represented by a second visual indicator that signifies a frequency of printhead conditions detected at that location over the period of time.Type: GrantFiled: January 18, 2022Date of Patent: October 24, 2023Assignee: Ricoh Company, Ltd.Inventors: Patrick Gonzalez, Carlie Charp, Ziling Zhang
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Patent number: 11783150Abstract: 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: GrantFiled: October 20, 2021Date of Patent: October 10, 2023Assignee: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Nikita Gurudath, Ziling Zhang, Brandon Skogen
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Patent number: 11778123Abstract: 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: GrantFiled: October 20, 2021Date of Patent: October 3, 2023Assignee: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Nikita Gurudath, Ziling Zhang, Brandon Skogen
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Publication number: 20230286265Abstract: A system is disclosed. The 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 receive first ink drop size data for each of a plurality of color planes associated with a first halftone design, generate first ink drop count data for each of the plurality of color planes based on the first halftone design and print job data, generate second ink drop count data for each of the plurality of color planes based on a second halftone design and the print job data and generate second ink drop size data for each of the plurality of color planes associated with the second halftone design based on the first ink drop count data, the first ink drop size data and the second ink drop count data.Type: ApplicationFiled: March 14, 2022Publication date: September 14, 2023Applicant: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Ziling Zhang, Nikita Gurudath, Samuel Hopper
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Patent number: 11755865Abstract: A system is disclosed.Type: GrantFiled: March 1, 2022Date of Patent: September 12, 2023Assignee: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Ziling Zhang, Nikita Gurudath, Samuel Hopper
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Publication number: 20230283736Abstract: 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 transfer functions for each of a plurality of color planes to compensate for non-functioning pel forming elements, wherein the transfer functions are generated 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 transfer functions transform input digital counts and the ink deposition functions represent output ink amount versus input digital count.Type: ApplicationFiled: March 1, 2022Publication date: September 7, 2023Applicant: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Nikita Gurudath, Ziling Zhang, Brandon Skogen
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Publication number: 20230281414Abstract: 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 overlapping pel forming elements of adjacent printheads based on ink deposition functions for groups of pel forming elements including non-overlapping pel forming elements and the overlapping 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: ApplicationFiled: March 1, 2022Publication date: September 7, 2023Applicant: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Nikita Gurudath, Ziling Zhang, Brandon Skogen
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Publication number: 20230281413Abstract: A system is disclosed.Type: ApplicationFiled: March 1, 2022Publication date: September 7, 2023Applicant: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Ziling Zhang, Nikita Gurudath, Samuel Hopper
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Publication number: 20230283737Abstract: 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 transfer functions for each of a plurality of color planes to compensate for overlapping pel forming elements of adjacent printheads, wherein the transfer functions are generated based on ink deposition functions for groups of pel forming elements including non-overlapping pel forming elements and the overlapping pel forming elements, wherein the transfer functions transform input digital counts, and wherein the ink deposition functions represent output ink amount versus input digital count.Type: ApplicationFiled: March 1, 2022Publication date: September 7, 2023Applicant: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Nikita Gurudath, Ziling Zhang, Brandon Skogen
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Patent number: 11738552Abstract: 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: GrantFiled: February 2, 2021Date of Patent: August 29, 2023Assignee: Ricoh Company, Ltd.Inventors: Mikel Stanich, Nikita Gurudath, Pallavi Premkumar, Ziling Zhang, Burke Larsen
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Patent number: 11731420Abstract: A system is disclosed. The 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 receive first ink drop size data for each of a plurality of color planes associated with a first halftone design, generate first ink drop count data for each of the plurality of color planes based on the first halftone design and print job data, generate second ink drop count data for each of the plurality of color planes based on a second halftone design and the print job data and generate second ink drop size data for each of the plurality of color planes associated with the second halftone design based on the first ink drop count data, the first ink drop size data and the second ink drop count data.Type: GrantFiled: March 14, 2022Date of Patent: August 22, 2023Assignee: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Ziling Zhang, Nikita Gurudath, Samuel Hopper
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Patent number: 11734537Abstract: 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 overlapping pel forming elements of adjacent printheads based on ink deposition functions for groups of pel forming elements including non-overlapping pel forming elements and the overlapping 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: August 22, 2023Assignee: Ricoh Company, Ltd.Inventors: Mikel Stanich, Walter F. Kailey, Nikita Gurudath, Ziling Zhang, Brandon Skogen
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Patent number: 11734814Abstract: 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: GrantFiled: December 12, 2019Date of Patent: August 22, 2023Assignee: Ricoh Company, Ltd.Inventors: Nikita Gurudath, Scott R. Johnson, Nathan Young, Ziling Zhang
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Publication number: 20230229294Abstract: Systems and methods are provided for reporting printhead conditions. One embodiment is a system that includes a user interface, a display, and a controller configured to present a Graphical User Interface (GUI) via the display. The GUI includes a first area depicting an array of printheads. Each printhead of the array is represented by a first visual indicator that signifies a frequency of printhead conditions detected at that printhead over a period of time. In response to receiving a selection of at least one of the printheads via the user interface, the controller presents a second area of the GUI via the display. The second area depicts locations of printhead conditions detected at the selection over the period of time. Each of the locations is represented by a second visual indicator that signifies a frequency of printhead conditions detected at that location over the period of time.Type: ApplicationFiled: January 18, 2022Publication date: July 20, 2023Applicant: Ricoh Company, Ltd.Inventors: Patrick Gonzalez, Carlie Charp, Ziling Zhang