Samsung Electronics Co., Ltd.

Hewlett-packard Development Company, L.p.

Min-chul Lee

Jeong-ho Park

Matthew James Storey

Jefferson Blake West

Zackary Thomas Hickman

Ji-Won Moon

Kwang-min Park

Kenneth Kay Smith

Pratik Shah

Woong-Yong Choi

Andrew P Chick

Hyun-surk Ryu

Si-hoon Lee

Long Yan

Yoona Min

Eun-Kyung Yun

Eun-je Hyun

Examples of a print a print particle replenishment device are described. In some examples, a print particle replenishment device includes a rotating member to rotate about a central axis of the print particle replenishment device. In some examples, the rotating member includes an opening offset from the central axis. In some examples of a print particle replenishment device, a nozzle is offset from the central axis, where the nozzle is to slide with respect to an interior plane of the rotating member to align with the opening to transfer print particles through the nozzle and opening when in an open position. In some examples, a print particle replenishment device includes an extension that protrudes with respect to the opening to engage a port cover of a host device to move the port cover to open a port for replenishment at rotation.

Print particle replenishment device

An electronic device includes a pop-up device configured to be inserted into a main body of the electronic device in an inserted state, including a gas sensor including a sensor block for sensing a gas, and configured to expose the sensor block to an outer portion of the electronic device in a pop-up state; a power supplier arranged on an outer portion of the pop-up device, configured to supply electric power to the gas sensor; and a connection controller configured to control a connection state of the pop-up device, to block supply of electric power to the gas sensor when the pop-up device is in the inserted state and to supply electric power to the gas sensor when the pop-up device is in the pop-up state, including one or more terminals formed on the pop-up device that move together with the pop-up device when the pop-up device moves.

Electronic device including gas sensor and method of operating the same

A gas sensing system includes a driving circuit chip, and a gas sensor, a temperature sensor, and a humidity sensor, which are located on the driving circuit chip. The gas sensing system compensates a gas sensing result based on at least one of a temperature sensing result and a humidity sensing result and generates a gas sensing signal. The gas sensor includes a first resonator and a first sensing film being configured to sense a first gas and located on the first resonator to be exposed to the outside. The temperature sensor includes a second resonator and an encapsulation layer located above the second resonator not to expose the second resonator to the outside, and the humidity sensor includes a third resonator.

Gas sensing device, electronic device including the gas sensing device, and gas sensing system

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

A gas sensor including a gas sensing device having a resonant frequency that varies with adsorbed chemicals, a frequency detector configured to detect the resonant frequency of the gas sensing device, a calibrator configured to generate current calibration data based on the resonant frequency of the gas sensing device which has been heated to a calibration temperature in a calibration mode, and a compensator configured to adjust an output value of the frequency detector based on the current calibration data in a sensing mode may be provided.

Gas sensor and gas sensing method for providing self-calibration

Provided is an image reading apparatus including a scanning unit having a flat glass plane and a scanning module, and an auto document feeder (ADF) having a contact member. The contact member has a body unit that faces the scanning unit while interposing the flat glass plane therebetween and biases the document toward the flat glass plane, and a plurality of elastic ribs that elastically bias the body unit toward the flat glass plane and which are integrally formed with the body unit.

Image reading apparatus including auto document feeder

Growing community of inventors

Seongnam-si, South Korea

Min-chul Lee