Fuji Xerox Co., Ltd.

Hiroaki Kumai

Hideaki Tanaka

Matsuyuki Aoki

Hiroh Soga

Kiyoshi Nagamine

Makoto Hamatsu

Shoji Yamauchi

Hiroshi Kawarazuka

An image forming apparatus includes a density adjusting unit that executes first formation of forming a first color sample in a transfer area on an image carrier, first adjustment of adjusting output characteristics of an image forming unit to reduce a difference between a measured density of the first color sample and a first target density, second formation of forming a second color sample in a non-transfer area on the image carrier, second adjustment of adjusting the output characteristics to reduce a difference between a measured density of the second color sample and a second target density, and third adjustment of adjusting the output characteristics to reduce a difference in output density between the transfer and non-transfer areas, if the difference between the measured density of the second color sample and the second target density exceeds a predetermined extent after repeating the second formation and the second adjustment.

Image forming apparatus, density adjusting device, non-transitory computer readable medium, density adjusting method, and image forming method

A visualizing agent quantity display control system includes a first container, a second container, a detection unit, a display unit, a control unit. The second container, which is replaceable, contains the visualizing agent to be supplied to the first container. The detection unit detects a quantity of the visualizing agent contained in the second container. The control unit causes the detection unit to detect a remaining quantity of the visualizing agent in the second container except the visualizing agent which decreases when an operation of supplying the visualizing agent in the second container to the first container has first been executed. The control unit causes a display unit to display information indicating that the remaining quantity of the visualizing agent in the second container is full regardless of the quantity of the visualizing agent which decreases when the operation has first been executed.

Visualizing agent quantity display system, image forming apparatus, image forming system and computer readable medium

By using information stored in a storage part provided in the image forming apparatus main body or the results of detection of an image density sensor or the like, it is judged whether or not a replaceable unit such as a toner cartridge has been replaced. Furthermore, from information stored in the storage part provided in the image forming apparatus main body, it is detected whether a replaceable unit such as a toner cartridge is genuine or other than genuine units. From these detection results, information on the amount used for developer of the replaced toner cartridge, stored in the storage part, is initialized.

Image forming apparatus attached with replaceable unit

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Saitama, Japan

Hiroaki Kumai