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公开(公告)号：US10947073B2
公开(公告)日：2021-03-16
申请号：US16651197
申请日：2017-10-03
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Daniel James Magnusson , Ian Patrick Anderson , Joseph C O'Banion , Devin Scott Uehling , Alan Shibata , Saurabh Shripad Bhide , Stuart Scofield
Abstract: In some examples, velocity and torque based media motor control may include ascertaining a velocity and torque for a feed roller motor associated with a feed roller, and ascertaining a velocity and torque for a drive roller motor associated with a drive roller that is to receive media from the feed roller. Further, velocity and torque based media motor control may include determining whether the torque for the drive roller motor is greater than a torque target. In response to a determination that the torque for the drive roller motor is greater than the torque target, the torque for the drive roller motor may be reduced to the torque target, and the torque for the drive roller motor may be maintained at the torque target.
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公开(公告)号：US20210046771A1
公开(公告)日：2021-02-18
申请号：US17250003
申请日：2018-08-31
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Duane A Koehler , Robert Yraceburu , Daniel James Magnusson
IPC: B41J11/00 , B41J29/393
Abstract: Power allocation in printing devices is disclosed. Independent load requests are received from printing device heater systems. A first load request is received from a first heater system and a second load request is received from a second heater system. Power grants are allocated based on a general power arbitration of a power source in response to the independent load requests. The power grants include a first power grant based on the first load request and a second power grant based on the second load request. The power grants are adjusted based on a contextual printing condition. The power grants are adjusted to apportion a measure of the second power grant to the first power grant rather than provide the measure of the second power grant to the second heater system if a print substance density is outside a selected print substance density threshold.
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公开(公告)号：US20180236788A1
公开(公告)日：2018-08-23
申请号：US15956310
申请日：2018-04-18
Applicant: Hewlett-Packard Development Company, L.P.
IPC: B41J11/00
Abstract: In one example, a method for controlling temperature of a print dryer. High power is applied to a heater of the print dryer. A series of temperatures of the print dryer are periodically measured and stored until a target temperature for the print dryer is exceeded. Low power is applied to the heater after the target temperature is exceeded. A rate of temperature change at a time when the target temperature was exceeded is calculated from the stored temperatures. Using the rate, an initial heater duty cycle defining an initial heater power determined. PID control of the heater power is performed, beginning with the initial heater duty cycle, to maintain the print dryer temperature at the target temperature within a predefined accuracy.
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公开(公告)号：US11852995B2
公开(公告)日：2023-12-26
申请号：US15733789
申请日：2018-08-31
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Robert Yraceburu , Francisco Alcazar , Daniel James Magnusson , Duane A Koehler
CPC classification number: G03G15/5004 , G03G15/205 , G03G15/2039 , G06F3/1221 , G06K15/4055 , H05B1/02 , H05B1/0241
Abstract: According to examples, an apparatus may include a processor that may identify a first period for a heated system, the first period including a first set of power events and a first zero power event for the heated system and may identify a second period for the heated system, the second period including a second set of power events and a second zero power event for the heated system. The processor may also borrow, from the second period, a portion of a second power event of the second set of power events and may apply the borrowed portion of the second power event to a first power event of the first set of power events during the first period to remove the first zero power event from the first period.
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公开(公告)号：US11806990B2
公开(公告)日：2023-11-07
申请号：US17294033
申请日：2018-12-21
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Daniel James Magnusson , Robert Yraceburu , Timothy Jacob Luedeman
CPC classification number: B41J11/00242 , B41J2/04541 , B41J2/04563 , B41J11/00212
Abstract: In some examples, a system can include: a heating device, a Proportional Integral Derivative (PID) controller and a switching mechanism to selectively enable transmission of signals to the heating device based on a real time temperature in proximity to the heating device, wherein the PID controller is to continuously output pulse width modulation (PWM) signals independent of selective transmission of signals by the switching mechanism.
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Patent Agency Ranking
公开(公告)号：US11325400B2
公开(公告)日：2022-05-10
申请号：US17047976
申请日：2018-07-13
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Robert Yraceburu , Daniel James Magnusson
Abstract: According to examples, a heated system may include a heat generating device, a temperature sensor to detect temperature in the heated system, and a controller. The controller may store temperatures detected by the temperature sensor over time and based on a determination that the temperature in the heated system has reached a predefined temperature value, stop application of power to the heat generating device. The controller may also calculate a rate of change of the stored temperatures corresponding to a predefined period of time prior to the application of power to the heat generating device being stopped, may determine a seeding value for a control mechanism of the heat generating device based on the calculated rate of change, and based on aa determination that a predefined condition has occurred, control the control mechanism to apply power to the heat generating device beginning with the determined seeding value.
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公开(公告)号：US20220019274A1
公开(公告)日：2022-01-20
申请号：US17293615
申请日：2018-12-14
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Robert Yraceburu , Duane A. Koehler , Daniel James Magnusson
IPC: G06F1/28 , G06F1/30 , G06F1/3206
Abstract: In some examples, a system identifies a plurality of time periods in which a time period includes a power event and a zero power event. The system tracks a cumulative error value that is adjusted based on elimination of a power event or elimination of a zero power event in the time period. The system determines a value of a first term if a power event in the time period is eliminated, and determines a value of a second term if a zero power event in the time period is eliminated, and based on the cumulative error value, the value of the first term, and the value of the second term, decides between eliminating the power event in the time period and eliminating the zero power event in the time period.
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公开(公告)号：US20210162777A1
公开(公告)日：2021-06-03
申请号：US17047980
申请日：2018-07-13
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Robert Yraceburu , Daniel James Magnusson , Vladislav Shapoval
Abstract: In some examples, a media conditioner includes a heated conveying component to convey a sheet of printable media, the conveying component including a first portion extending widthwise, and a second portion extending widthwise from the first portion. The media conditioner also includes a first temperature sensor to measure temperature of the first portion of the conveying component; a second temperature sensor to measure temperature of the second portion of the conveying component; and a controller to produce a determination involving a first temperature at the first portion of the conveying component, a second temperature at the second portion of the conveying component, a reference temperature of the first portion, and a reference temperature of the second portion, and a threshold value. The controller is to produce a result indicator based on the comparison
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公开(公告)号：US20210114383A1
公开(公告)日：2021-04-22
申请号：US17047634
申请日：2018-06-08
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Jody L Clayburn , Lorraine T Golob , Daniel James Magnusson , Brooke Hoyer
Abstract: In some examples, a system is disclosed that includes a roller assembly for a printer. The roller assembly includes a pressure roller, a belt coupled, a drive assembly to rotate the pressure roller and to urge the pressure roller into the belt, a heater to apply heat to the belt, and a temperature sensor to detect a temperature of the belt. In addition, the roller assembly includes a controller to increase a pressure applied to the pressure roller from a first to a second pressure in pressure in response to a temperature of the belt being greater than or equal to a first temperature threshold. Also, the controller is to initiate an advance of a print media to contact the belt in response to the temperature of the belt being greater than or equal to a second, higher temperature threshold.
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公开(公告)号：US10723146B2
公开(公告)日：2020-07-28
申请号：US16332056
申请日：2016-09-12
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Brooke Hoyer , Kenneth Blaine Wade , Daniel James Magnusson , Robert Yraceburu , Benjamin Whitney Griffith
IPC: B41J11/00 , B41J2/045 , B41J29/393 , G06K15/02 , G06K15/00
Abstract: According to an example, a printing system may include printing components, an input voltage engine to determine whether an input voltage level is outside of a predetermined voltage level range, and a printing components engine to control the printing components to operate in one of a normal mode and a reduced throughput mode based upon whether the accessed input voltage level is outside of the predetermined voltage level range.
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