Canon Kabushiki Kaisha

Takashi Sugiura

Ryo Taguri

Hisao Kamo

Takatoshi Tanaka

Tetsuro Noguchi

Shinya Yumoto

Kazuhiko Araki

Masayoshi Taira

Arika Tanaka

Naotoshi Miyamachi

Tomokazu Kotake

Jun Wang

Kenichi Hayashi

Mitsuru Kurita

Yushi Oka

Shinichi Takata

Toshifumi Kakutani

Kazuhito Ohashi

Naohisa Nagata

Atsuteru Oikawa

Masafumi Kamei

Noriyoshi Chizawa

Fumitaka Sobue

Kenichi Tamura

Hitoshi Kato

Naoto Watanabe

Takashi Suzuki

Nao Nagashima

Kiyoshi Watanabe

Hiroyuki Ichikawa

Daisaku Kamiya

Shunichi Abe

Tetsuya Morita

Youichi Chikugo

Taro Ikeda

Tsutomu Takayama

Satoru Kutsuwada

Wataru Kawata

Koji Arai

Keiko Fujita

Hirohiko Tashiro

Shizuo Hasegawa

Koichi Ishimoto

Yoshihiro Funamizu

Satoru Kanno

Masanori Muramatsu

Yukimasa Iseki

Tomoichirou Ohta

Takeharu Uchizono

Seiichirou Satomura

Hideaki Chishima

Yasuyuki Aikoh

Shunji Yamashida

A recording medium includes a substrate and an ink receiving layer that includes inorganic particles and a binder. The inorganic particles include fumed silica particles. The binder includes a resin having a glass transition temperature of 20&#xb0; C. or less. The content of the binder in the ink receiving layer is 40% by mass or more of the content of the inorganic particles included in the ink receiving layer.

Recording medium with enhanced flexibility

A recording medium includes a substrate and an ink receiving layer that includes inorganic particles and a binder. The inorganic particles include at least one type of alumina particles selected from fumed alumina particles and hydrated alumina particles. The binder includes a resin having a glass transition temperature of 20&#xb0; C. or less. The content of the binder in the ink receiving layer is 25% by mass or more of the content of the inorganic particles included in the ink receiving layer.

A recording medium includes a substrate, a first ink-receiving layer, and a second ink-receiving layer serving as a top layer in this order. The first ink-receiving layer contains an amorphous silica having an average particle size of 1.0 &#x3bc;m or more. The second ink-receiving layer contains a colloidal silica. The root-mean-square slope R&#x394;q of roughness profile elements, provided in JIS B 0601:2001, of a surface of the second ink-receiving layer is 0.3 or more.

Recording medium

A recording medium including a substrate and an ink receiving layer on the substrate, the ink receiving layer containing inorganic particles and a water-soluble resin. The recording medium has an HM1 of 40 N/mmor less and has a rate of change of HM2 to HM1 of 400% or less. HM1 is a Martens hardness when an indenter is pushed at a 500 mN load over 180 seconds from a surface of the recording medium into a 1 &#x3bc;m depth in a thickness direction thereof. HM2 is a Martens hardness when the indenter is pushed up to a position where the indenter is not in contact with the surface and is then pushed at a 500 mN load over 180 seconds from a pressing starting position into a 1 &#x3bc;m depth in the thickness direction at the same point as that at which the indenter is first pushed.

A recording medium includes a substrate, a first ink-receiving layer, and a second ink-receiving layer adjacent to the first ink-receiving layer in this order. The first ink-receiving layer contains an inorganic particle having an average particle size of 50 nm or less, and the second ink-receiving layer contains an amorphous silica having an average particle size of 3.2 &#x3bc;m or more.

A recording medium includes a substrate and a first ink-receiving layer. The first ink-receiving layer contains an amorphous silica having an average particle size of 1.0 &#x3bc;m or more and an inorganic particle having an average particle size of 50 nm or less. The content of the amorphous silica in the first ink-receiving layer is 30 mass % or more and 95 mass % or less based on a total content of all inorganic particles.

A fixing apparatus capable of reducing deterioration in productivity while preventing a fixing roller from being heated to a high temperature. The fixing roller has a heating unit incorporated therein, and a rotatable pressurization roller abuts on the fixing roller. A thermistor detects a surface temperature of the fixing roller. A fixing operation is controlled by selectively switching between a first mode and a second mode in which the number of sheets subjected to fixing per unit time is smaller than in the first mode. One of the first and second modes is selected based on a first temperature detected by the thermistor at a first time, a second temperature detected by the thermistor at a second time, and a minimum temperature of the fixing roller at which the toner image can be fixed.

Fixing apparatus and image forming apparatus that switches fixing operation

In an apparatus including the detachable unit, when reading individual information of the detachable unit, a first label for generating a reference signal for reading individual information and a second label representing the individual information are arranged on a surface of the detachable unit, with a first label reading unit, the reference signal is generated while reading the first label in a predetermined direction, and with a second label reading unit, the individual information of the detachable unit contained in the second label is read in synchronous with the generated reference signal. Read individual information is stored, and whether a mounted detachable unit is new or used is recognized based on a comparison of individual information read from the detachable unit with stored individual information.

Method of reading individual information of a detachable unit, individual information reading device, apparatus having the individual information reading device, and a detachable unit

A sheet skew-correcting device includes a sheet-conveying rotation body for conveying a sheet, a skew-correcting member that contacts an end of the sheet conveyed by the sheet-conveying rotation body for correcting skew of the sheet, and a driving unit for moving the skew-correcting member. The skew-correcting member moved in a sheet-conveying direction by the driving unit contacts the end of the sheet conveyed in the sheet-conveying direction by the sheet-conveying rotation body, so as to correct the skew of the sheet.

Skew-correcting device and sheet-processing apparatus

An image forming apparatus which is capable of accurately detecting the temperature of a fixing roller by a simple circuit configuration without causing a scratch on the surface of the fixing roller. A detection sensor is disposed in a state not in contact with a heating-type fixing roller, for detecting the temperature of the fixing roller. A compensation sensor is provided for detecting an ambient temperature of the detection sensor. A computing section of a copy controller calculates the surface temperature of the fixing roller, using computing equations, based on information from the sensors. The copy controller controls the temperature of the fixing roller such that the surface temperature of the fixing roller, calculated by the computing section, becomes equal to a target temperature. The computing section uses different computing equations depending on the target temperature.

Controlling fixing device temperature of an image forming apparatus based on target temperature

A sheet processing apparatus includes an aligning member configured to align an end of a bundle of sheets including a folded sheet by engaging with the edge of the bundle of sheets, and a sheet processing unit configured to process the bundle of sheets having the end aligned by the aligning member. The end of the bundle of sheets engaged with the aligning member is opposite to a folded portion of the folded sheet.

Sheet processing apparatus and image forming apparatus

An image forming apparatus has a water content determination apparatus that can precisely determining a water content in a medium regardless of an environment where the image forming apparatus is installed. The water content determination apparatus has a detection device that outputs a first signal while the medium is absent in an electrostatic capacitance region formed in a path where the medium is conveyed and outputs a second signal while the medium is present in the electrostatic capacitance region. The temperature in the image forming apparatus is determined based on the first signal. The water content in the medium is determined based on the second signal and the temperature determined by the temperature determination device.

Water content determination apparatus, image forming apparatus, control method, and program

An image forming apparatus in which the intensity of a light beam used to form a latent image is switched in response to a change in resolution. A laser emits a light beam for forming a latent image on a photosensitive drum. A polygon mirror scans the emitted light beam. BD sensors detect the scanned beam. A timing controller selects the preferable timing from a storage device table according to the intensity of the light beam or the resolution when controlling the light emission timing of the lasers in response to a detection of timing of the detected light beam.

Method and apparatus for image forming

The life of a secondary battery is extended and important data is backed up when power trouble, such as an incidental power failure, occurs. When a sudden power failure occurs, a battery supplies backup power to a memory for storing data to be backed up. By using a main switch for turning the main power supply of the apparatus on or off, the supply of the backup power from the battery to the memory is stopped, interlocked with the main switch, when the main switch shuts down the main power supply. This reduces the number charge-discharge cycles of the battery, prevents deterioration of the battery, and prolongs the life of the battery.

Electronic apparatus

To control a light emitted from a fluorescent lamp having phosphors with different afterglow properties for different colors, a center of a lighting control signal for controlling the lighting of the fluorescent lamp is controlled to constantly align with the center of a Hsync period so that despite the variation of the lighting time of the fluorescent lamp, a barycenter of the quantity of light from the fluorescent lamp in the Hsync period almost aligns with the center of the Hsync period to reduce the offset of the barycenter.

Image reading apparatus and control method thereof

Growing community of inventors

Kashiwa, Japan

Takashi Sugiura