Canon Kabushiki Kaisha

Naohiko Tsuchida

Yoshihiro Ogawa

Toru Takahashi

Wakashi Iida

Keisuke Tanaka

Masami Fujimoto

Yasutaka Akashi

Daisuke Yoshiba

Yuzo Tokunaga

Daisuke Tsujimoto

Daiyu Ueno

Atsushi Fujita

Takashi Hirasa

Yuya Chimoto

Tomoyo Miyakai

Shigeto Tamura

Kouichirou Ochi

Akifumi Matsubara

Minoru Sakaida

Kohji Takenaka

Koji Nishikawa

Masato Nakajima

Keiichiro Kubo

Wakashi Ilda

An image capturing apparatus capable of guaranteeing the authenticity of contents while reducing the calculation load of a hash value of an image file. The image capturing apparatus generates an image file, and performs processing for reducing a file size of the image file. A hash value generation section calculates a hash value by applying a hash function to the processed image file. Reduction processing information indicating a method of reducing the file size is generated, and the image file, the hash value, and the reduction processing information are transmitted in a state associated with each other, to a management system that registers data associated with the image file including the hash value in a blockchain.

Image capturing apparatus capable of guaranteeing authenticity of digital image, management system, control method, and storage medium

An imaging apparatus includes at least one memory and at least one processor which function as: an acquisition unit configured to acquire information on an object being focused by another imaging apparatus; and a control unit configured to perform control to display an object item corresponding to the object being focused by the other imaging apparatus on a basis of the information acquired by the acquisition unit.

Imaging apparatus for multi-photography that displays an object item corresponding to an object being focused by another imaging apparatus

A liquid developer comprising: a toner particle containing binder resin; a carrier liquid; and a basic toner particle dispersing agent, wherein the basic toner particle dispersing agent is a primary amine, an acid value of the binder resin is at least 10 mg KOH/g, an acid value of a component having a molecular weight of not more than 2,000 contained in the binder resin is not more than 5 mg KOH/g, and a hydroxyl value of the component having a molecular weight of not more than 2,000 contained in the binder resin is not more than 10 mg KOH/g.

Liquid developer

A liquid developer comprising a toner particle containing a binder resin and a carbon black, a toner particle dispersing agent, and a carrier liquid, wherein amounts of group 15 elements, group 16 elements, and group 17 elements on a surface of the carbon black are respectively 0.1 atomic percent or less with respect to a total amount of elements on the carbon black surface.

Liquid developer and manufacturing method of liquid developer

Provided is a magnetic toner which exhibits a high degree of blackness and high tinting strength, and in which scraping of a toner carrying member surface by the magnetic toner is not caused, and image defects such as fogging and tailing are suppressed. A magnetic toner comprising a magnetic toner particle that contains a binder resin and a magnetic iron oxide particle, wherein, the number-average particle diameter of the magnetic iron oxide particle ranges from 0.05 &#x3bc;m to 0.15 &#x3bc;m, and a relationship between the number-average particle diameter (&#x3bc;m) of the magnetic iron oxide particle and the specific surface area (m/g) of the magnetic iron oxide particle satisfies Expression (1) below.[Number&#x2212;average particle diameter]&#xd7;[specific surface area]&#x2266;1.10&#x2003;&#x2003;(1).

Toner using small-particle size magnetic iron oxide

A toner comprising a binder resin and a wax, wherein the binder resin contains a binder resin A and a binder resin B, the binder resin A has a softening point of at least 120&#xb0; C. and not more than 150&#xb0; C., has a polyester unit, and has a terminal of which a first aliphatic compound having a melting point of 60&#xb0; C. or more and not more than 85&#xb0; C. has been condensed, and the binder resin B has a softening point of at least 80&#xb0; C. and not more than 115&#xb0; C., has a polyester unit, and has a terminal of which a second aliphatic compound having a melting point of 90&#xb0; C. or more and not more than 120&#xb0; C. has been condensed.

Toner

Growing community of inventors

Tokyo, Japan

Naohiko Tsuchida