Konica Minolta, Inc.

Akihiko Itami

Hiroshi Nagasawa

Koji Shibata

Toshiyuki Fujita

Yukio Hosoya

Kazutoshi Kobayashi

Masaharu Matsubara

Makoto Nomiya

Natsuki Ito

Takayuki Ishikawa

Kazumi Oura

A developing sleeve for an electrophotographic image forming apparatus includes an aluminum alloy containing more than 0.6% by mass of silicon and conveys a developer containing a toner and a carrier.

Developing sleeve and electrophotographic image forming apparatus

Disclosed is an image forming method including: developing, with an electrostatic charge image developing toner, a latent image formed on a photoreceptor in which a photosensitive layer is formed on a support containing aluminum as a main component; transferring a toner image on the photoreceptor onto a transfer target; and rubbing and removing the electrostatic charge image developing toner remaining on the photoreceptor after the transferring. The support contains silicon in a range of more than 0.6% by mass and 12.6% by mass or less, a shape factor of toner particles included in the electrostatic charge image developing toner is in a range of 0.800 to 0.970, and a content of the toner particles having a particle diameter of 2 μm or less is in a range of 5% by number to 30% by number.

Image forming method and image forming system

Method for acquiring local gonio-reflection characteristics of an image which is aggregation of dots. Sensory glossiness (L) of the image determined by equation (1) is 1.0 or more. The sensory glossiness (L) is determined based on a height of a peak (H), a height of a base (B) and a half width of a peak (W) of a distribution information of lightness with respect to light receiving angle, obtained by measuring reflected light of a measuring light irradiated into the image. The local gonio-reflection characteristics is acquired with a spatial resolution (A) for acquiring the local gonio-reflection characteristics and a resolution (B) which represents a distribution information of the dots within a region where the sensory glossiness (L) being 1.0 or more, satisfying formula (2).=Log(()/)  Equation (1)0.8<<10  Formula (2)

Local gonio-reflection characteristics-acquiring method, image processing method, image display method, and local gonio-reflection characteristics-acquiring apparatus

Provided is an electrostatic charge image developing toner including toner matrix particles containing at least a binder resin, wherein a photosensitizer having a singlet oxygen generating ability is contained inside the toner matrix particles or in an external additive attached to the toner matrix particles.

Electrostatic charge image developing toner and manufacturing method of same, image forming method, image forming system and output product using same

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Hino, Japan

Akihiko Itami