Hewlett-packard Development Company, L.P.

Jiwon Moon

Matthew James Storey

Bennett Alexander Nadeau

An Tran

Zackary Thomas Hickman

Woongyong Choi

Kenneth Kay Smith

Jefferson Blake West

Andrew P Chick

Jinhwa Hong

Minchul Lee

Jeffrey H Luke

Sean Daniel Fitzgerald

Mathew Lavigne

Pratik Shah

Yongnam Ahn

SeungSup Lee

Corbett Benjamin Schoenfelt

Muriel Hale Shields

Minul Lee

Luke Kim

Min-Chul Lee

Kok Weng Chan

Yongil Moon

Seung Gweon Lee

Lian Chye Simon Tan

Yong-Kwan Cho

Seung Il Kim

Suseong Lee

JungMin Yang

Shin-Hyup Kang

Kyonghwna Kim

An example image forming apparatus includes a main body, a driving motor, a developing cartridge, and a clutch. The developing cartridge includes a toner container, a mounting portion to receive a toner refill cartridge, a toner inlet portion to connect the mounting portion to the toner container, and a toner inlet shutter to be switched between a blocking location for blocking the toner inlet portion and an inlet location for opening the toner inlet portion. The clutch is to selectively transmit a driving force of the driving motor to the toner inlet shutter.

Structure for driving toner inlet shutter of developing cartridge by using motor

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

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

A development cartridge which is mountable in an image forming apparatus includes a toner container portion to store toner and a toner refilling portion to receive, from a toner refill cartridge mountable to the toner refilling portion, toner to be stored in the toner container portion. The toner refilling portion includes an inlet shutter rotatable to an inlet position at which the toner is capable of being received by the toner refilling portion from the toner refill cartridge, and a shutter protrusion provided on a surface of the inlet shutter to, while the inlet shutter is rotated, contact an object and cause feedback indicating the inlet shutter is rotated to the inlet position.

Toner refilling portion of development cartridge to provide feedback indicating inlet shutter position

In some examples, an apparatus can include a mating interface coupled to a dispense interface to interact with a print particle dispense nozzle, a locking mechanism coupled to the dispense interface to prevent the print particle dispense nozzle from depositing a print particle to the dispense interface, and an authentication mechanism coupled to the locking mechanism to: authenticate the print particle dispense nozzle, and unlock the locking mechanism when the print particle dispense nozzle is authenticated to allow the print particle dispense nozzle to deposit the print particle to the dispense interface.

Authentication mechanisms

A printer may include a main body and a development cartridge attachable to and detachable from the main body. The development cartridge may comprise a developing portion in which a photoconductive drum and a developing roller are provided, a waste toner container to receive waste toner removed from the photoconductive drum, a toner container connected to the developing portion and to receive toner, and a toner refilling portion connected to the toner container and to refill toner through the toner refilling portion into the toner container. The printer may include a communicating portion provided in the main body to be connected to the toner refilling portion to provide an access the toner refilling portion from outside of the main body when the development cartridge is attached to the main body.

Structure to refill toner to development cartridge mounted in main body

In some examples, a print material particles dispenser, including: a print material area with an output area that includes an output channel that is positioned away from a central axis of the print material area, and a structure adapted to decrease a volume of the print material area to output print material particles through the output channel of the print material area.

Dispensers with plungers

A printer includes a main body including a communicating portion, a development cartridge attachable to and detachable from the main body, the development cartridge to supply toner contained in a toner container to an electrostatic latent image formed on a photoconductor, to form a visible toner image, and a toner refilling portion connected to the toner container. The toner refilling portion includes a mounting portion into which a toner cartridge insertable from outside the main body through the communicating portion to be mountable, a toner inlet portion provided in the mounting portion to receive toner from the toner cartridge when the toner cartridge is mounted to the mounting portion, and an inlet shutter switchable between a blocking position where the toner inlet portion is blocked from receiving toner, and an inlet position where the toner inlet portion is open to receive toner. The printer includes a first latch member switchable between a first position where the inlet shutter is locked from switching between the blocking position and the inlet position and a second position where switching of the inlet shutter is allowed to switch between the blocking position and the inlet position, and a switching unit to switch between the first latch member between the first position and the second position.

Structure for selectively locking toner inlet shutter of toner refill portion

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Pangyo, South Korea

Jiwon Moon