Hewlett-packard Development Company, L.p.

Andrew P Chick

Kenneth Kay Smith

Pratik Shah

Matthew James Storey

Zackary Thomas Hickman

Wan Xuan Lim

Kiran Shanthamallappa Kattesomanahalli

Jefferson Blake West

An Tran

Bennett Alexander Nadeau

Dustin C Rosing

Jiwon Moon

Min-Chul Lee

Hye Heon Jung

Muriel Hale Shields

Jeffrey H Luke

Sean Daniel Fitzgerald

Mathew Lavigne

Minchul Lee

Adam L Hornstein

Kyonghwan Kim

Corbett Benjamin Schoenfelt

Eun-kyung Yun

Eun-Kyung Yun

Robert Moser

Changyeop Oh

Luke Kim

Ji-won Moon

Matthew C Grossman

Woong-Yong Choi

Chung Chiet Edwin Chin

Jinhwa Hong

Ji-Won Moon

Min-chul Lee

Virginia K Capps

Kwangsung Park

Wade Andrew Farris Maple

Yoona Min

Minul Lee

Richard Motzkus

KyongHwan Kim

ChangYeop Oh

Steven Motzkus

Nanette Jensen

Kyonghwna Kim

In some examples, an apparatus can include a syringe body including an electrical interface at a side surface of the syringe body, an interface at an end of the syringe body including an output at a distal surface of the syringe body, a print material particles reservoir located in the syringe body, and a structure to adapt a volume of the print material particles reservoir to move print material particles out of the print material particles reservoir through the output, where in response to the volume adapting structure moving from a first position to a second position, a signal is transmitted by the electrical interface.

Syringe bodies

An example print material replenishment device includes a container to contain print material, a dispensing end to engage a fill port of a printing device, the dispensing end including an opening that is offset from a center axis of the container, and a rotatable cover coupled to the dispensing end, the rotatable cover to expose the opening of the dispensing end based on a rotation of the print material replenishment device.

Print material refill device

Examples disclosed herein relate to identifying an amount of remaining supply of a print material, selecting one of a plurality of threshold ranges associated with the amount of remaining print material, and updating a visual indicator indicative of the selected one of the plurality of threshold ranges.

Print material visual indicator

In some examples, a print materials container can include a dispense mechanism to dispense print materials directly to an in-situ reservoir of a printing device, a lock feature to engage a fill port during connection of the dispense mechanism to the fill port, and a valve integrated with the dispense mechanism for connecting the dispense mechanism to the fill port of the reservoir and comprising an output opening offset from a center axis of a tip of the dispense mechanism. The valve can open responsive to rotation of the valve opening with respect to the lock feature such that opposite openings align.

Print materials replenishment

An iconographic control panel of an image forming apparatus is provided. The iconographic control panel includes a plurality of physical iconographic control buttons respectively corresponding to a plurality of functions of the image forming apparatus, each of the plurality of physical iconographic control buttons comprising at least one dedicated light emitting diode, and at least one processor to determine an availability of the plurality of functions of the image forming apparatus respectively corresponding to each of the plurality of physical iconographic control buttons, determine a functional state of the plurality of functions of the image forming apparatus determined to be available, and control an illumination of the at least one LED of each of the plurality of physical iconographic control buttons based on the availability of each function corresponding to each of the plurality of physical iconographic control buttons and the functional state of each function determined to be available.

Iconographic control panel of an image forming apparatus

In some examples, an apparatus can include a print substance gauge to indicate a quantity of print particles an imaging device is capable of receiving at a particular time, and an authentication mechanism coupled to a locking mechanism, the authentication mechanism includes instructions to: determine a quantity of print particles within a print particle container, and unlock the locking mechanism when the print substance gauge indicates that the imagining device is capable of receiving the quantity of print particles within the print particle container.

Print substance gauge authentication

An image forming apparatus and method for determining a toner level and providing a notification are provided. The method of operating an image forming apparatus includes counting a number of times a lower toner hopper receives toner from an in-situ refillable upper toner hopper, calculating an estimate of toner volume transferred from the lower toner hopper to a surface of a photosensitive drum, determining an amount of toner consumed from the in-situ refillable upper toner hopper based on the number of times the lower toner hopper receives toner from the in-situ refillable upper toner hopper and the estimate of toner volume transferred from the lower toner hopper to the surface of the photosensitive drum, and generating an upper toner hopper refill notification when the amount of toner consumed from the in-situ refillable upper toner hopper is determined to exceed a threshold value.

Toner level determination and notification

Printer

Multifunction printer

Toner reload kit

Growing community of inventors

Vancouver, WA, United States of America

Andrew P Chick