Hewlett-packard Development Company, L.p.

Eun-Kyung Yun

Kenneth Kay Smith

Pratik Shah

Andrew P Chick

Matthew James Storey

Jefferson Blake West

Zackary Thomas Hickman

Dustin C Rosing

Ji-Won Moon

Min-chul Lee

Virginia K Capps

Hye Heon Jung

Kwangsung Park

Yoona Min

KyongHwan Kim

ChangYeop Oh

Nanette Jensen

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

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

Growing community of inventors

Seongnam-si, South Korea

Eun-Kyung Yun