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公开(公告)号：WO2019078843A1
公开(公告)日：2019-04-25
申请号：PCT/US2017/057160
申请日：2017-10-18
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： ROURKE, Kevin , CHIEW, Kelvin , LOW, Tong Nam Samuel , KINAS, Erick Blane , MANNION, James , RONALDSON, Joe
CPC classification number: G03G15/086 , G03G15/105
Abstract: A print agent vessel is disclosed that comprises a circuit, the circuit comprising a first electrically conductive portion to couple to a first terminal of a printing device, a second electrically conductive portion to couple to a second terminal of the printing device, and an electrically conductive component capacitively coupled to the first electrically conductive portion. The circuit has a variable capacitance that is indicative of a parameter of the component.
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公开(公告)号：WO2019203842A1
公开(公告)日：2019-10-24
申请号：PCT/US2018/028511
申请日：2018-04-20
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： LOW, Tong Nam Samuel , ZHAO, Yu , HUANG, Pui Wen , LIEW, Yew Hin , LIM, Wei Chun
Abstract: Examples techniques to control execution of print commands are described. In an example, a print command indicative of markings to be on a medium is received at an image rendering device. A number of ink droplets to be ejected from nozzles of the image rendering device to form the markings on the medium is determined. A thickness that the medium will have upon the markings being formed is determined based on the number of ink droplets to be ejected from the nozzles. The print command is executed based on the estimated thickness.
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公开(公告)号：WO2021126247A1
公开(公告)日：2021-06-24
申请号：PCT/US2019/067877
申请日：2019-12-20
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： LOW, Tong Nam Samuel , HUANG, Pui Wen , ZHAO, Yu , LIM, Wei Chun
IPC: G01F23/292
Abstract: Techniques for controlling assessment of storage height are described. In an example, a device includes an optical transducer and a light source. The optical transducer generates a signal corresponding to light received from the light source. Based on the signal, brightness of the light source may be controlled.
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公开(公告)号：WO2019203841A1
公开(公告)日：2019-10-24
申请号：PCT/US2018/028510
申请日：2018-04-20
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： CHONG, Kok Chai , LOW, Tong Nam Samuel , CHONG, Ban Ho , GOH, Jun Hong , KOH, Seng San
Abstract: Examples relating to determining stack height in imaging devices are described herein. According to one example, an imaging device includes an input roller assembly to transport a print medium towards an image-forming assembly of the imaging device. The input roller assembly can include a pinch roller for drawing the print medium from a media stack. The imaging device further includes a pressure plate movably coupled to a body portion of the imaging device and biased towards the pinch roller. The pressure plate may hold the media stack between itself and the pinch roller and is movable by a first distance from a neutral position when the media stack is there between. The first distance is measured from a fixed point to a measurement region on the pressure plate and can indicate an instantaneous stack height of the media stack..
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公开(公告)号：WO2015187125A1
公开(公告)日：2015-12-10
申请号：PCT/US2014/040563
申请日：2014-06-02
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： LOW, Tong Nam Samuel , ZHAO, Yu , HUANG, Xiaoxi , ENG, Bee Loon
CPC classification number: B65H1/04 , B65H7/02 , B65H2511/10 , B65H2511/12 , B65H2511/22 , B65H2515/60 , B65H2553/414 , B65H2220/01 , B65H2220/03 , B65H2220/04
Abstract: A printer has a media tray including an adjustable wall to engage a side of a media stack and a proximity sensor at the side of the media tray to emit a signal directly onto the adjustable wall and sense a signal reflected by the adjustable wall.
Abstract translation: 打印机具有包括可调节壁的介质托盘，以与介质托盘侧面的接近传感器接合，以将信号直接发射到可调壁上并感测由可调壁反射的信号。
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公开(公告)号：WO2022075986A1
公开(公告)日：2022-04-14
申请号：PCT/US2020/054597
申请日：2020-10-07
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： LOW, Tong Nam Samuel , NURSALIM, Jeffrey , RAVI, Suresh Kumar
Abstract: According to examples, an apparatus may include a processor and a memory on which are stored computer-readable instructions that, when executed by the processor, may cause the processor to access a signal received from a sensor. The signal may indicate a presence of a media between the sensor and a reflector. The reflector may be positioned in a media tray to detect a size of the media placed in the media tray. In some examples, the processor may extract a section of the signal that corresponds to a predetermined region of the reflector. The predetermined region of the reflector may exclude an edge of the reflector and the extracted section of the signal may exclude glitches corresponding to the edge of the reflector. In some examples, the processor may determine the size of the media in the media tray based on the extracted section of the signal.
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公开(公告)号：WO2021034310A1
公开(公告)日：2021-02-25
申请号：PCT/US2019/046994
申请日：2019-08-19
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： KOH, Seng San , CHONG, Kok Chai , LAM, Siew Hong , LOW, Tong Nam Samuel
IPC: B41J19/78 , B41J19/82 , B29C64/227 , B33Y30/00
Abstract: In one example, a printing device may include a first motor to transition a carriage between a first position and a second position, the carriage to exert a force on a gate shifter as the carriage transitions between the first position and the second position, the gate shifter to transition between an open position and a closed position in response to the exerted force of the carriage, and a feed swingarm to transition between a first side and a second side of the gate shifter when the gate shifter is in the open position.
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公开(公告)号：WO2019203844A1
公开(公告)日：2019-10-24
申请号：PCT/US2018/028517
申请日：2018-04-20
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： LOW, Tong Nam Samuel , HUANG, Pui Wen , ZHAO, Yu , CHONG, Kok Chai
Abstract: Example techniques for output tray position detection are described, in an example, an imaging device includes an output tray movable between an extended position and a retracted position. The imaging device includes an optical sensor array to detect a stack height of media in the output fray and a light blocking element coupled to the output tray to block an optica! sensor of the optica! sensor array when the output tray is in the retracted position. The imaging device further includes a position detection module coupled to the optical sensor array, to determine, based on an output signal of the optica! sensor array, the output tray to be in one of the extended position and the retracted position.
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公开(公告)号：WO2019099021A1
公开(公告)日：2019-05-23
申请号：PCT/US2017/062214
申请日：2017-11-17
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： LOW, Tong Nam Samuel , ZHAO, Yu , HUANG, Xiaoxi
CPC classification number: B41J29/38 , B41J11/0095 , B41J29/44
Abstract: An apparatus including an illuminator to emit light on a media to be printed on is provided. The apparatus also includes an optical sensor disposed proximate to the illuminator to detect an amount of reflected light. In addition, the apparatus includes a processor to control the illuminator and the optical sensor. The processor is to calibrate the illuminator to determine a first brightness level for high sensitivity at the optical sensor. The processor is to calibrate the illuminator to determine a second brightness level iteratively based on a signal to noise ratio. The processor is to compare the second brightness level with the first brightness level to determine whether to proceed with detection of an edge of the media using the second brightness level.
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公开(公告)号：WO2017160297A1
公开(公告)日：2017-09-21
申请号：PCT/US2016/022913
申请日：2016-03-17
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： KOH, Chin Hung , LOW, Tong Nam Samuel , TAN, Kang Leng
IPC: B41J29/393 , B41J29/38
Abstract: A printer is operated to determine an attribute of a field of view of the scan sensor. A calibration test pattern is determined based on the field of view (e.g., size of the field of view relative to dimension of individual bar in pattern).
Abstract translation: 操作打印机以确定扫描传感器的视场的属性。 基于视场（例如，相对于图案中单个条的尺寸的视场的大小）来确定校准测试图案。
