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公开(公告)号：US11809932B2
公开(公告)日：2023-11-07
申请号：US17557123
申请日：2021-12-21
Applicant: Xerox Corporation
Inventor： Patricia J. Donaldson , Stuart Schweid , Michael B. Monahan , Roger L. Triplett , Douglas R. Taylor
CPC classification number: G06K19/06103 , G06F3/1222 , G06F3/1238 , G06F3/1243 , G06K19/06178
Abstract: Access is provided to a variable data printing app and a code detection app on a computer server. The variable data printing app is adapted to add machine-readable code to printable items and create a decoder app capable of decoding the machine-readable code. The code detection app is adapted to receive user identification information and transmit the user identification information to designer devices. The printable items are printed as printed products. The designer devices validate a user device based on the validity of the user identification information. In response, the variable data printing app is adapted to transmit the decoder app to validated user devices. The code detection app, operating on the user device, is adapted to decode the machine-readable code in user-acquired images into an optional secure link with the designer devices.
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公开(公告)号：US10210608B2
公开(公告)日：2019-02-19
申请号：US15487596
申请日：2017-04-14
Applicant: Xerox Corporation
Inventor： Stuart Schweid , Douglas R. Taylor
Abstract: An image system for detecting defects in an image may include a processing device to detect defects in a target image by analyzing the activity level in a reference and the target image. The system may identify a quiet area/pixel in the reference image based on the activity level, check the activity level of the corresponding pixel in the target image, and classify the pixel in the target image as defective if the activity level of the pixel in the target image exceeds a noise threshold. The system may additionally swap the reference and target image, repeat the detection steps and combine the detection results with those before the swap. The system may also include an image sensor to scan a printed document of the reference image into a scanned electronic document (the target image).
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公开(公告)号：US10198809B2
公开(公告)日：2019-02-05
申请号：US15487584
申请日：2017-04-14
Applicant: Xerox Corporation
Inventor： Stuart Schweid , Douglas R. Taylor
Abstract: A system for detecting defects in a print system may include a print engine to print an electronic document (a reference image) and yield a printed document. The system may also include an image sensor to scan the printed document into a scanned electronic document (a target image). The system may include a processing device to detect defects in the printed document by analyzing the activity level in the reference and target image. The system may identify a quiet area/pixel in the reference image based on the activity level, check the activity level of the corresponding pixel in the target image, and classify the pixel in the target image as defective if the activity level of the pixel in the target image exceeds a noise threshold. The system may additionally swap the reference and target image, repeat the detection steps and combine the detection results with those before the swap.
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公开(公告)号：US09906654B1
公开(公告)日：2018-02-27
申请号：US15366333
申请日：2016-12-01
Applicant: Xerox Corporation
Inventor： Douglas R. Taylor , Eliud Robles Flores
CPC classification number: H04N1/00005 , H04N1/00015 , H04N1/00037 , H04N1/00074 , H04N1/393 , H04N2201/0094
Abstract: Methods and systems print an original image to form a printed sheet, scan the printed sheet, and overlay the original image on an area of the scanned image where original image is located, to produce an overlay image. A border is added to the original image in the overlay image to modify the original image into an enlarged original image. Markings from an area of the overlay image where the enlarged original image is positioned are removed to produce a white space image. Defects in the white space image are detected and highlighted by adding highlight markings to the white space image where the defects are located, to produce a defect image. The defect image is displayed.
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公开(公告)号：US09086648B1
公开(公告)日：2015-07-21
申请号：US14183793
申请日：2014-02-19
Applicant: XEROX CORPORATION
Inventor： Brian R. Conrow , Douglas R. Taylor
CPC classification number: G03G15/0855 , G03G15/5041
Abstract: Devices and methods detect an amount of toner on a photoreceptor caused by a printing process, and calculate a reload signal using a processor. The reload signal shows the amount of toner being reloaded on a donor roll from a toner container to replace the toner being removed from the donor roll during the printing process (as detected by an optical sensor). Such devices and methods generate a toner concentration (TC) sensor response representing a concentration of toner particles within the toner/developer mixture using a TC sensor, calculate a calibration sensor relationship between the TC sensor response and the reload signal, using the processor, based on changes in the TC sensor response and the reload signal that occur while changing the toner concentration during the printing process, and calibrate the TC sensor based on differences between the calibration sensor relationship and a previously established model relationship using the processor.
Abstract translation: 设备和方法检测由打印处理引起的感光体上的调色剂量，并使用处理器计算重新加载信号。 重新载入信号示出了从调色剂容器重新装载在供体辊上的调色剂的量，以更换在印刷过程期间（由光学传感器检测到的）从供体辊移除的调色剂。 这样的装置和方法使用TC传感器产生表示调色剂/显影剂混合物中的调色剂颗粒浓度的调色剂浓度（TC）传感器响应，使用基于处理器的TC传感器响应和重载信号之间的校准传感器关系 关于在打印过程中改变调色剂浓度时发生的TC传感器响应和重新加载信号的变化，并且基于使用处理器的校准传感器关系和先前建立的模型关系之间的差异来校准TC传感器。
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Patent Agency Ranking
6.发明授权System and method for visually detecting defective inkjets in an inkjet imaging apparatus 有权用于视觉检测喷墨成像设备中的有缺陷的喷墨喷嘴的系统和方法公开(公告)号：US08864283B1
公开(公告)日：2014-10-21
申请号：US13890790
申请日：2013-05-09
Applicant: Xerox Corporation
Inventor： Douglas R. Taylor , Robert E. Rosdahl, Jr. , Brian R. Conrow
IPC: B41J29/393 , B41J2/21
CPC classification number: B41J2/2142 , B41J2/2139 , B41J2/2146
Abstract: A method of printer operation enables visual detection of defective inkjets. The method includes operating inkjets in a predetermined number of printheads that eject a same color of ink to form a test pattern having three portions. One portion is printed by the even-numbered inkjets in each printhead, one portion is printed by the odd-numbered inkjets in each printhead, and a third portion is printed by all of the inkjets in each printhead. The portions are printed immediately adjacent to one another in a process direction with the third portion between the other two portions.
Abstract translation: 打印机操作的方法使得能够可视地检测有缺陷的喷墨喷嘴。 该方法包括在预定数量的打印头中操作喷墨喷嘴以喷射相同颜色的墨水以形成具有三个部分的测试图案。 一部分由每个打印头中的偶数喷墨打印头，一部分由每个打印头中的奇数喷墨打印，并且第三部分由每个打印头中的所有喷墨打印。 这些部分在处理方向上彼此紧邻地打印，其中第三部分在另外的两个部分之间。
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公开(公告)号：US20230196048A1
公开(公告)日：2023-06-22
申请号：US17557123
申请日：2021-12-21
Applicant: Xerox Corporation
Inventor： Patricia J. Donaldson , Stuart Schweid , Michael B. Monahan , Roger L. Triplett , Douglas R. Taylor
CPC classification number: G06K19/06103 , G06F3/1222 , G06F3/1238 , G06F3/1243 , G06K19/06178
Abstract: Access is provided to a variable data printing app and a code detection app on a computer server. The variable data printing app is adapted to add machine-readable code to printable items and create a decoder app capable of decoding the machine-readable code. The code detection app is adapted to receive user identification information and transmit the user identification information to designer devices. The printable items are printed as printed products. The designer devices validate a user device based on the validity of the user identification information. In response, the variable data printing app is adapted to transmit the decoder app to validated user devices. The code detection app, operating on the user device, is adapted to decode the machine-readable code in user-acquired images into an optional secure link with the designer devices.
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公开(公告)号：US20220247888A1
公开(公告)日：2022-08-04
申请号：US17166607
申请日：2021-02-03
Applicant: Xerox Corporation
Inventor： Stuart A. Schweid , John T. Newell , Chu-Heng Liu , Roger L. Triplett , Mojgan Rabbani , Martin S. Maltz , David A. VanKouwenberg , Seemit Praharaj , Douglas R. Taylor , Martin L. Frachioni , Paul J. McConville
Abstract: A system and method enable determining a total colorant limit for printing images. The system includes memory which stores instructions for: determining a grain value for each of a set of printed patches printed on a first print media, the grain value being based upon a visual contrast sensitivity function computed for the respective patch, the set of printed patches including patches printed on the print media at different total colorant values; determining a total colorant limit for the first print media, as a function of the total colorant values and corresponding grain values for the printed patches in the set, wherein the total colorant limit is a total colorant value which corresponds to a grain value which does not exceed a threshold grain value for the first print media. A processor executes the instructions.
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公开(公告)号：US11348214B2
公开(公告)日：2022-05-31
申请号：US16988183
申请日：2020-08-07
Applicant: Xerox Corporation
Inventor： Douglas R. Taylor , Stuart A. Schweid
IPC: G06T7/00 , G06T5/50 , G06T5/00 , B41J29/393
Abstract: A system and method are provided for registering source and target images. The method includes receiving a first source image and a first scanned image. The first scanned image is one that has been generated by scanning a printed page that has been generated by printing the first source image or a transformed first source image derived from the first source image. Locations of corners of a target image in the first scanned image are identified. With a first computed transform, the corners of the target image in the first scanned image are aligned to corners of the first source image to generate an aligned target image. Local features in the source image and aligned target image are detected. A second transform is computed to align the target image with the first source image, based on the detected local features.
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公开(公告)号：US20180225816A1
公开(公告)日：2018-08-09
申请号：US15487596
申请日：2017-04-14
Applicant: Xerox Corporation
Inventor： Stuart Schweid , Douglas R. Taylor
IPC: G06T7/00
CPC classification number: G06T7/001 , G06K9/62 , G06K9/6202 , G06K9/6206 , G06K9/6215 , G06K9/6267 , G06K9/6284 , G06T2207/10008 , G06T2207/20036 , G06T2207/30144 , G06T2207/30168
Abstract: An image system for detecting defects in an image may include a processing device to detect defects in a target image by analyzing the activity level in a reference and the target image. The system may identify a quiet area/pixel in the reference image based on the activity level, check the activity level of the corresponding pixel in the target image, and classify the pixel in the target image as defective if the activity level of the pixel in the target image exceeds a noise threshold. The system may additionally swap the reference and target image, repeat the detection steps and combine the detection results with those before the swap. The system may also include an image sensor to scan a printed document of the reference image into a scanned electronic document (the target image).
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