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 an orientation of a medium to provide an adjusted grant from the power source to a printing device heater system of the printing device heater systems.

Abstract: According to examples, an apparatus may include a processor and a nontransitory computer readable medium storing machine readable instructions that when executed by the processor may cause the processor to receive a requested power demand from a first heating component and a second heating component, compare the requested power demand to a first threshold, and select a sequencing and stacking group of a plurality of sequencing and stacking groups for the first heating component and the second heating component corresponding to a result of the requested power demand being compared to the first threshold. The instructions may also cause the processor to control application of power to the first heating component and the second heating component according to the selected sequencing and stacking group.

Abstract: Example described herein relate to a print shoes. For instance, a print shoe can include a body including a first surface, a first arm extending from the first surface and including a first mounting mechanism to couple to a spring, and a second arm extending from the first surface in a position substantially coplanar with the first arm, where the second arm includes a second mounting mechanism to couple to the spring and dispose the first arm a distance away from the second arm when coupled to the spring.

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.

Abstract: In an example, a print system include a component device that is operation in a number of state, a density engine, and a component engine. An example density engine identifies a plane region of a plane where print fluid is to be printed based on data of a print job and determines a density classifier for the plane based on a location of the plane region on the plane. An example component engine causes an adjustment of a component attribute of the component device based on the density classifier.

Abstract: Example implementations relate to print media stacks. In some examples, a device may include a sheet channel to guide a sheet of print media within the sheet channel above and separated in a vertical direction from a stack of printed media when the sheet of print media exits a print path of a printer. The device may include a plurality of clamps to control alignment of the sheet of print media on the stack of printed media when the sheet channel moves outboard from the sheet of print media to allow the sheet of print media to fall onto the stack of printed media, wherein the plurality of clamps sequentially pin the sheet of print media to the stack of printed media from a middle portion of the sheet of print media outward.

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.

Abstract: A number of systems and devices for a variable radius pulley are described herein. In one example, a media puller device can include a variable radius pulley coupled to a drag roller, and a cable coupled to the variable radius pulley to maintain a torque on the drag roller as the cable wraps around the variable radius pulley.

Abstract: In some examples, a system includes a first heater and a second heater, and a controller to receive a power request indicating a power level for the second heater, in response to the power request, select a power delivery technique from among different power delivery techniques that employ different ways of delivering power to the first and second heaters, and cause powering of the first and second heaters using the selected power delivery technique.

Abstract: Example described herein relate to a print shoes. For instance, a print shoe can include a body including a first surface, a first arm extending from the first surface and including a first mounting mechanism to couple to a spring, and a second arm extending from the first surface in a position substantially coplanar with the first arm, where the second arm includes a second mounting mechanism to couple to the spring and dispose the first arm a distance away from the second arm when coupled to the spring.

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.

Abstract: A media registration system including a track to transport media in a transport direction from an intake end to a registration end, and a pivot shaft. A translator to register media in a lateral direction to the transport direction includes a translation element operatively coupled to the track and moveable along a translation axis in the lateral direction, and a driver to drive the translation element a translation distance along the translation axis to rotate the track about the pivot shaft to move the registration end a selected registration distance in the lateral direction, the translation distance proportional to the selected registration distance.

Abstract: A finisher apparatus includes an accumulator to register a print medium of a print job in preparation for a finishing operation, memory to store an attribute of the print job, and a processor coupled to the accumulator and the memory. The processor is to execute instructions. The instructions are to control the accumulator based on the attribute of the print job.

Abstract: A finisher apparatus includes an actuator to control a component of the finisher apparatus to perform a finishing operation on a print medium. A sensor is provided to sense the print medium in a print-medium path in the finisher apparatus. A processor is coupled to the actuator and the sensor. The processor is to execute instructions. The instructions are to actuate the actuator to eject the print medium from the print-medium path in response to a signal from the sensor indicative of a jam of the print medium in the finisher apparatus.

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.

Abstract: Examples disclosed herein relate to an imaging device. Examples include a method for increasing the temperature of the imaging device by determining an internal temperature of the imaging device; determining if a start-up routine is to be initiated; pausing the start-up routine if the internal temperature is below a threshold temperature; and energizing at least one of a fan or heating element of the imaging device when the internal temperature is below the threshold temperature.

Abstract: According to examples, an apparatus may include a processor and a nontransitory computer readable medium on which is stored machine readable instructions that are to cause the processor to generate a linear piecewise control signal based on an internal resistance of a heating lamp to control a rate of change of a phase angle of an applied voltage in the heating lamp until a peak current in the heating lamp is within a predefined threshold of a maximum current rating of an alternating current (AC) power source of a circuit.

Abstract: An example system includes a stacking portion having a leading edge portion and a trailing edge portion, the stacking portion being to receive print media transported into the stacking portion in a direction from the trailing edge portion to the leading edge portion; a bar clamp extending longitudinally in the direction of transport of the print media; and a driver arrangement to selectively extend the bar clamp onto the stacking portion and to retract the bar clamp away from the stacking portion.

Abstract: According to examples, an apparatus may include instructions that may cause the processor to identify, for a first device state, a first set of active components of a device and to determine a first power demand level of the first set of active components for the first device state. The instructions may also cause the processor to determine that the device is to transition from the first device state to a second device state, to determine, for the second device state, a second set of active components of the device having a second power demand level that is within a predefined difference level of the first power demand level, the predefined difference level to smooth power delivery to the device between the first device state and the second device state, and to control application of power to the second set of active components during the second device state.

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.