-
公开(公告)号：US10449783B2
公开(公告)日：2019-10-22
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.
-
公开(公告)号：US11345166B2
公开(公告)日：2022-05-31
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.
-
公开(公告)号：US11230120B2
公开(公告)日：2022-01-25
申请号：US15733800
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
Abstract: Power allocation in printing devices is disclosed. Independent load requests are received from printing device heater systems including an independent load request is received from a printing device heater system of the printing device heater systems. A power allowance of an amount of a power output is allocated to the printing device heater system if a print substance density is outside a print substance density threshold and the independent load request is outside a load threshold.
-
公开(公告)号：US20210331461A1
公开(公告)日：2021-10-28
申请号：US16499944
申请日：2018-07-13
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jody L. Clayburn , Robert Yraceburu , Daniel James Magnusson
Abstract: In some examples, a media conditioner includes a conveying component to convey a sheet of printable media, a first heating element to heat a first portion of the conveying component, a second heating element to heat a second portion of the conveying component, and a controller. The controller is to provide a variable first power level to the first heating element and a variable second power level to the second heating element to cause the first and second heating elements to generate heat. In addition, the controller is to determine a first parameter based on the first power level and to determine a second parameter based on the second power level. The controller is also to produce a result indicator based on a result of a comparison between the first parameter and the second parameter.
-
公开(公告)号：US11110725B2
公开(公告)日：2021-09-07
申请号：US15733799
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
Abstract: Power allocation in printing devices is disclosed. Independent load requests are received from printing device heater systems. Power grants are allocated based on a general power arbitration of a power source in response to the independent load requests. A power grant is adjusted based on a contextual printing condition to provide an adjusted grant from the power source to a printing device heater system of the printing device heater systems. The adjusted grant is based on a power grant limit corresponding with the contextual printing condition.
-
Patent Agency Ranking
公开(公告)号：US20210245494A1
公开(公告)日：2021-08-12
申请号：US15733789
申请日：2019-08-31
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Robert Yraceburu , Francisco Alcazar , Daniel James Magnusson , Duane A Koehler
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.
-
公开(公告)号：US20210096486A1
公开(公告)日：2021-04-01
申请号：US17250002
申请日：2018-08-31
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Duane A Koehler , Robert Yraceburu , Daniel James Magnusson
Abstract: Power allocation in printing devices is disclosed. A first load request is received from a first heater system having a first thermal time constant and a second load request is received from a second heater system having a second thermal time constant. 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 to apportion a measure of the first power grant to the second power grant rather than provide the measure of the first power grant to the first heater system if a print substance density is within a selected print substance density threshold and the first load request is within a selected load threshold.
-
公开(公告)号：US10946674B2
公开(公告)日：2021-03-16
申请号：US16608419
申请日：2017-04-27
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Duane A Koehler , Francisco Alcazar , Daniel James Magnusson
Abstract: A sequence of loads within a system is determined during each of multiple time windows based on a determination of each load's temperature to a target value. The sequencing of the loads involves a determination as to whether the length of each time window is long enough to permit all of the loads to be sequentially activated in order to have their temperatures approximate the corresponding target temperatures. In some cases, the sequence of the loads is determined to be one that results in a monotonically changing power profile.
-
公开(公告)号：US20210046769A1
公开(公告)日：2021-02-18
申请号：US15733799
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
Abstract: Power allocation in printing devices is disclosed. Independent load requests are received from printing device heater systems. Power grants are allocated based on a general power arbitration of a power source in response to the independent load requests. A power grant is adjusted based on a contextual printing condition to provide an adjusted grant from the power source to a printing device heater system of the printing device heater systems. The adjusted grant is based on a power grant limit corresponding with the contextual printing condition.
-
公开(公告)号：US20200270081A1
公开(公告)日：2020-08-27
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.
-
-
-
-
-
-
-
-
-
Search Results
30
records
(took 0.024 seconds)
