Canon Kabushiki Kaisha

Jiro Ishizuka

Kazuo Kishino

Tatsuo Takeuchi

Hideo Kawamoto

Masahiro Inoue

Rie Saito

Masaaki Takahashi

Takeshi Menjo

Mitsuhiro Ota

Takashi Fujita

Yasuo Nami

Keisuke Inoue

Osamu Soutome

Shozo Shimada

Shuichi Tamura

Tomohisa Itagaki

Toshinori Nakayama

Nobuhiko Zaima

Kazuhisa Kemmochi

Masayuki Tamaki

Taichi Takemura

Hikaru Osada

Yuji Kitano

Keisuke Abe

Mitsuhiro Ohta

Tsutomu Miki

Toru Kabashima

Shuhei Takahashi

Koichi Sato

Nobuatsu Sasanuma

Yutaka Arai

Koji Sato

Naoyuki Yamamoto

Jun Miura

Katsuhisa Matsunaka

Nobuhiko Takekoshi

Haruhiko Moriguchi

Yasuhiro Miyahara

Yuji Sakemi

Junji Ito

Naoki Akiyama

Koji Amemiya

Masahiro Itoh

Kenji Hashimoto

Masaaki Sakurai

Hiroto Sugimoto

Hiroki Muramatsu

Hirokazu Kodama

Yuji Nakayama

Hiroaki Kumagai

Ryo Yashiro

Ryuichiro Maeyama

Takeo Tsunemi

Osamu Sotome

Toshihiko Sugimoto

Shinichirou Yoshikawa

Erito Machida

Toru Obuchi

Provided is a recorded material in which a recording liquid is satisfactorily fixed to a recording medium and which has a sufficient chroma and a sufficient lightness, in high-speed printing. The recorded material comprises a recording medium, a toner particle including colorant particles, and a cured resin including the toner particle and fixing a toner image formed of the toner particle onto the recording medium, wherein an average circularity of the toner particle is not less than 0.70 and not more than 0.99, the toner particle is not exposed from a surface of the cured resin, and an average distance between wall surfaces of the adjacent toner particles is not less than 10 nm and less than 125 nm.

Recorded material and image forming method

The present invention provides an image forming apparatus provided with a fixing apparatus including an infrared irradiation unit for irradiation of a recording medium, on which a liquid developer including a colorant and a cationic polymerizable monomer having a C&#x2014;H bond is placed, with infrared light, and an ultraviolet irradiation unit for irradiation of the liquid developer with ultraviolet light, wherein when a peak wavelength due to the C&#x2014;H bond in an infrared absorption spectrum of the cationic polymerizable monomer is defined as &#x3bb;1 and a half-value wavelength at which a spectral radiant energy density of infrared light emitted from the infrared irradiation unit is 50% (when two of such half-value wavelengths are present, a half-value wavelength at a longer wavelength) is defined as &#x3bb;2, the peak wavelength &#x3bb;1 is located at a shorter wavelength than the half-value wavelength &#x3bb;2.

Image forming apparatus and image forming method

Provided is a fixing device, the heat generation amount of which can be obtained with a smaller amount of a microwave absorbing material. As a result, the start-up (warm-up) time for achieving a fixing temperature can be shortened without impairing characteristics such as flexibility, releasing property, and durability. The fixing device includes a heating member; a pressurizing member; and a microwave generating unit. It is configured to fix an unfixed toner on a recording material by passing the recording material through a nip formed between the heating member and the pressurizing member. The heating member includes a heat generating layer for generating heat with microwaves generated by the microwave generating unit. The heat generating layer contains a high molecular compound and a carbon fiber having an average fiber diameter of 80-150 nm, an average fiber length of 6-10 &#x3bc;m, and an absorption peak in a Raman spectrum resulting from a graphite structure.

Fixing device with a heat generating layer containing a high molecular compound and a carbon fiber, and an electrophotographic image forming apparatus containing the fixing device

An image forming portion of an image forming apparatus is configured to form a toner image on a recording medium such that a relationship of M&#x2266;&#x3c1;&#x3c0;L/(30&#x221a;3) is satisfied, where a volume average particle size of toner is L (&#x3bc;m), density of the toners is &#x3c1; (g/cm), and a maximum toner laid quantity per unit area of a single color toner image on a recording medium is M (mg/cm). The toner image formed by the image forming portion is fixed on the recording medium by a fixing nip portion by being heated and applied a force in a direction of a plane of the recording medium.

Image forming apparatus

When an unfixed toner image is formed on a recording material, a maximum toner amount per unit area satisfies A&#x3c;(&#x3c1;&#x3a0;L)/30&#x221a;3, where a specific gravity of a toner is &#x3c1; (g/cm), a weight-average particle size is L (&#x3bc;m), and the toner amount per unit area of the unfixed toner image on the recording material is A (mg/cm), in formation of the unfixed toner image with each color toner, and the unfixed toner image is fixed so that a region where colors of chromatic toners of respective colors in the above-described images are seen in an overlaid state is 84% or more.

Image forming apparatus controlling toner image overlapping ratio

The image forming apparatus includes image forming device for forming an image, switching device for switching resolution of an image formed by the image forming device, processing device for performing stabilization processing for stabilizing quality of the image formed by the image forming device and changing device for changing a processing procedure of the stabilization processing in accordance with the resolution switched by the switching device. With these features, it is possible to avoid deterioration of image quality even if the resolution is switched.

A fixing step before smoothing by a smoothing device causes the phenomenon that a photo-medium is not properly separated from a fixing device due to a toner receiving layer of the photo-medium. Therefore, in order to prevent the occurrence of defective separation in the fixing device, a predetermined image pattern is formed using a toner containing a wax component in a margin, i.e., a non-image forming region, at the leading end of the photo-medium.

A cutting device cuts and discharges a recording material on which a plurality of images is formed, and includes cutting portion and a container. The cutting portion cuts the recording material. The container contains a remaining part generated from the cut recording material and a blank sheet portion the recording material cut by the cutting portion and on which no image is formed.

Cutting device and image forming apparatus

An image processing apparatus for forming an image using at least three color materials includes a first generation device for generating a plurality of patches of secondary colors composed of color materials of two different colors; a first measurement device for measuring the patches; a first correction characteristic calculation device for calculating gradation-correction characteristics corresponding to each of the two color materials; a second generation device for generating a group of patches in accordance with an image signal for the two different color materials and an image signal for color materials other than the two color materials by using an image signal corrected on the basis of the gradation-correction characteristics; a second measurement device for measuring patches generated by the second generation device; and a second correction characteristic calculation device for calculating gradation-correction characteristics of image signals for color materials other than the two different color materials.

Image processing method, image processing apparatus, storage medium, and program for calculating first and second graduation-correction characteristics, and for reducing hue variations of a secondary color

A color-mixing fixing device includes a first fixing rotary member, and a second fixing rotary member for forming a nip together with the first fixing rotary member. After toner images of a plurality of colors stacked on one surface of a recording medium are fixed by a nip, toner images of a plurality of colors stacked on the other surface of the recording medium are fixed by the nip, thereby forming full-color images on both the surfaces of the recording medium. Each of the first and second fixing rotary members has a surface rubber layer with an impact resilience of 50% or less.

Color-mixing fixing device in which impact resilience of surface layer of fixing rotary member is 50% or less

A releasing agent applying apparatus having an applying rotatable member for applying a releasing agent to an applied member, a supplying member for supplying the releasing agent to the applying rotatable member, a regulating member for regulating an amount of the releasing agent on the applying rotatable member, and a cleaning member for cleaning a surface of the applying rotatable member.

Releasing agent applying apparatus having cleaning member

A fixing device has fixation and pressure rollers in pressure contact with each other, and an application roller for applying release agent onto the fixation roller and a regulation blade for regulating an amount of the release agent so applied. The regulation blade abuts the application roller so that an extension direction of the regulation blade towards the application roller is substantially counter to a circumferential moving direction of the application roller and is provided with a chamfer at a corner between major and minor surfaces of the regulation blade at a chamfer angle of 30-70 degrees between an extension direction of the major surface and the chamfer of the regulation blade. The regulation blade abuts the application roller at an abutting angle of 30-50 degrees between the major surface and a tangent line of the application roller.

Fixing device and image forming apparatus including the device

If heat is deprived from the upper surface of a fixing roller, fixability of a fixing roller is lowered and may cause fixing failure. Furthermore, output recording material vary in glossiness, or there appears unevenness on the recording materials. A fixing apparatus, which is capable of suppressing reduction of a temperature of the surface of a fixing rotary body on the recording materials, is provided for reducing fixability of a fixing roller or fixing failure.

Fixing apparatus

The invention provides a roll member capable of preventing a sheet of recording paper from wrinkling. A metal compound MmXn and an inorganic fine powder are added to a silicone rubber layer forming the surface layer of the roll member. In the compound formula, M is a cation selected from among ions of Al, Sc, Cr, Fe, Co, Ni, Cu, Zn and Ga, and X is an anion selected from among ions of halogens, inorganic acids and organic acids.

Roll member and fusing device using the same

The present invention provides a fixing apparatus which has a fixing member for fixing an unfixed image onto a recording material, releasing agent applying device for applying a releasing agent to the fixing member, temperature detecting device for detecting a temperature of the releasing agent, and control device for controlling a fixing condition based on a detected temperature from the temperature detecting device.

Fixing apparatus in which heating conditions can be changed in accordance with temperature of releasing oil

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Moriya, Japan

Jiro Ishizuka