Sharp Kabushiki Kaisha Corporation

Tomoki Minamikawa

Kiyofumi Morimoto

Hiroo Naoi

Mitsuru Tokuyama

Takashi Usui

Motoyuki Itoyama

Kazuma Hinoue

Takeshi Ohkawa

Kohichi Takenouchi

Masayasu Narimatsu

Hideji Saikoh

An image-forming apparatus includes a detachable consumable; a printer that prints an image using the consumable; and a controller that determines whether control information that is set for the consumable and that is for control of the printer exists. The controller extracts, when it is determined that the control information corresponding to the consumable does not exist, image information from an image of a predetermined test pattern printed by the printer, and acquires the control information generated based on the extracted image information.

Image-forming apparatus, print management system, and method for controlling image-forming apparatus

An image forming apparatus includes an acquirer, a storage, and a controller. The acquirer acquires supplies-specific information uniquely attached to supplies used or consumed in image formation. The storage stores apparatus-specific information. The controller generates a one-time code as authentication information and also generates application code information for applying for apparatus use permission using the one-time code, the supplies-specific information, and the apparatus-specific information.

Image forming apparatus, application permission system, and application-code information generation method

An image forming device includes a toner cartridge which is housed in a cartridge housing portion, and a pushing-out unit, and the toner cartridge includes a CRUM chip. The CRUM chip stores specific information about whether the toner cartridge can be extracted at a housed position where the toner cartridge is housed in the cartridge housing portion. The pushing-out unit pushes-out the toner cartridge in a direction that the toner cartridge can be extracted from the cartridge housing portion in a case where the specific information indicates that the toner cartridge cannot be extracted at the housed position.

Image forming device capable of insertion and pulling-out consumable article container

An image forming device includes a toner cartridge, and the toner cartridge includes a CRUM chip. The CRUM chip stores specific information about whether an ejection action by an ejection mechanism for the toner cartridge is permitted. In accordance with an instruction by a control portion of the image forming device, the ejection action is permitted in a case of a permitting cartridge for which the ejection action is permitted, and the ejection action is inhibited in a case of an inhibiting cartridge for which the ejection action is inhibited.

Image forming device capable of inserting/pulling-out consumable article container

An image forming apparatus includes: a developing device having a developing vessel, a developing roller and a toner supply port; a toner supply device; a toner supply detecting sensor for detecting the toner concentration inside the developing vessel; a toner concentration controller for directing toner supply; a toner empty detector; and a sheet conveyance detecting sensor. The toner concentration controller has a toner supply device control function; and a toner supply stopping function of stopping toner supply when the last sheet of image printout being executed has passed by the predetermined position in the sheet conveyance path.

Image forming apparatus and image forming method

An image forming apparatus includes a developing device having a toner supply sensor, a toner supply device supplying toner to the developing device, a toner supply controller controlling toner supply from the toner supply device to the developing device based on predetermined conditions, a toner empty determiner determining whether toner is present inside the toner supply device. In the image forming apparatus, the toner supply device includes a storage for recording multiple measured values of toner supply detected by the toner supply sensor, and the toner supply controller corrects the amount of toner supply, based on the moving average of multiple measured values of the amount of toner supply.

Image forming apparatus and toner supply method

An image forming apparatus capable of performing monochrome printing and color printing in which all the developing units share a single development transformer is constructed such that at the time of monochrome printing the photoreceptor drums for colors are stopped rotating while all the developing units are constantly applied with a high voltage. Further, the cumulative operation time in which the black photoreceptor drum has been operated for monochrome printing is calculated so that the color-printing photoreceptor drums which are stopped during monochrome printing are rotationally driven by a predetermined angle when the cumulative operation time exceeds predetermined fixed time. Thus, the surface of each color-printing photoreceptor drum that is being worn is restored by making the fresh surface of the drum oppose the associated color developing unit, whereby it is possible to prevent occurrence of defects on the surface of each photoreceptor drum.

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Sakai, Japan

Tomoki Minamikawa