Ricoh Company, Ltd.

Canon Kabushiki Kaisha

Yukiko Iwasaki

Katsumi Nakagawa

Shoji Nishida

Kazuhisa Sudo

Kiyofumi Sakaguchi

Hiroshi Yoshinaga

Hiroyuki Sugiyama

Hitoshi Ishibashi

Masumi Sato

Kozo Arao

Takao Yonehara

Takatsugu Fujishiro

Ken Amemiya

Masaaki Iwane

Toshihiro Sugiyama

Takamasa Hase

Minoru Masuda

Tsukuru Kai

Hidetoshi Yano

Hiroyuki Fushimi

Narihito Kojima

Hisashi Shoji

Atsushi Yamamoto

Masafumi Sano

Shinya Nakayama

Yasushi Nakazato

Hiroshi Sato

Shunichi Ishihara

Ryo Hayashi

Keishi Saito

Akio Kosuge

Yasuyoshi Takai

Noboru Toyama

Takehito Yoshino

Takeo Suda

Koji Sakamoto

Motokazu Yasui

Masanao Ehara

Noritaka Ukiyo

Takashi Sakamaki

Nobuyuki Koinuma

Mikio Ishibashi

Reki Nakamura

Megumi Ohtoshi

Kazuaki Kamihara

Jun Shiori

Masaki Sukesako

Hironobu Takeshita

Masafumi Yamada

Masami Hiramatsu

Jun Yura

Masaki Mizutani

Ryuji Yoshida

Tatsumi Shoji

Kazuhiko Yuki

Hiroko Hirano

Tsuneyasu Nagatomo

Takehide Mizutani

Hiroshi Nagame

Ryuta Takeichi

Nobuto Yokokawa

Takaharu Kondo

Kohsuke Yamamoto

Akiyo Nakajima

Yoshiko Ishii

Isao Tanikawa

Masako Suzuki

Takayuki Kimura

Hideyuki Santo

Tokuya Ojimi

Tokuya Ohjimi

Osamu Endo

Hideo Furukawa

Makoto Iwakami

Ryota Kidera

Kenji Yoneda

Hiroshi Yosinaga

An image forming method is provided. The method includes the steps of forming an electrostatic latent image on a photoconductor; developing the electrostatic latent image into a toner image with a toner; transferring the toner image onto a recording medium having a smoothness of 20 s or less; and fixing the toner image on the recording medium. The toner exhibits an adhesion force of 100 gf or more, where the adhesion force is the maximum value of a pull force between a layer of the toner and standard paper determined by a tacking test with a probe temperature of 140&#xb0; C.

Image forming method, toner, and image forming apparatus

An image forming apparatus includes an image bearing member to bear a latent image on a surface thereof, a developing unit to develop the latent image on the image bearing member with toner, a driving unit to drive the developing device, a storage unit to store a cumulative travel distance of the developing roller at predetermined timing, a total travel distance of the developing unit, and control conditions for the developing unit, a controller to obtain a difference between the total travel distance of the developing roller and the cumulative travel distance up to a predetermined point in time in image forming operation and to instruct intermittent printing in which continuous printing is limited to a certain number of pages in a predetermined time period when the difference is equal to or greater than a threshold travel distance, and an operation unit in which the control conditions are set.

Image forming apparatus

An image forming apparatus includes: an image bearing member; a charger; an irradiator; a development device having an accommodation unit to accommodate toner to obtain a visible image; a transfer device; and a fixing device to fix the visible image transferred onto a recording medium. The fixing device having a fixing rotation member; and a pressure rotation member to form a nipping portion by contacting the fixing rotation member, wherein the surface pressure of the nipping portion is 1.5 kgf/cmor less, wherein the fixing rotation member has a Martens hardness of 1.0 N/mmor less at 23&#xb0; C., wherein the ratio of the projected area of a single particle of the toner onto the recording medium at 120&#xb0; C. to the projected area of a single particle of the toner onto the recording medium at 23&#xb0; C. is 1.60 or less.

An image forming apparatus includes: a plurality of image forming units each with an image carrier on which an electrostatic latent image is formed, and each with a developing member for developing process on the electrostatic latent image, wherein the image forming apparatus superimposes toner images of the respective colors to form a composite color image; when images on a plurality of pages are formed, the developing members of the respective colors are started or stopped in response to presence or absence of latent images of the respective colors on a page that is targeted for image formation; and when the image forming unit starts to be driven, a developing member, corresponding to a color whose latent image is not to be formed on a first page of the plurality of pages, is not started.

Image forming apparatus and image forming method used in the apparatus

Disclosed is an image forming device including a fixing unit that fixes a first image to be fixed onto a sheet, the first image to be fixed being supported on the sheet, a target fixing temperature varying unit that varies a target fixing temperature during a time period in which a fixing process is performed, and a gradation processing unit that applies a gradation process to first image information. The target fixing temperature varying unit varies the target fixing temperature for the sheet of the recording medium to which the fixing process is applied, depending on presence or absence of a halftone process, and depending on a type of the gradation process to be utilized.

Image forming device

An image forming apparatus includes a developing device including a developing roller to bear a developing agent to develop a latent image formed on an image bearing member, a cooling device to reduce an internal temperature of the image forming apparatus, a controller to calculate a travel distance of the developing roller to control the cooling device, and a memory unit to store the total travel distance of the developing roller. The controller calculates the total travel distance of the developing roller every Y minutes in the last X minutes, and a difference between the latest total travel distance of the developing roller and the total travel distance stored Z minutes ago by the memory unit to obtain the total travel distance during Z minutes and operate the cooling device for W minutes after image forming operation where the difference is equal to or greater than a threshold value M.

Image forming apparatus including a controller to control a cooling device to cool the image forming apparatus

An image forming apparatus includes an image carrier; a latent-image forming unit configured to form a latent image on the image carrier; a developing unit configured to develop the latent image on the image carrier with a developer applied onto a developer carrier; a temperature detector configured to detect an internal temperature or an ambient temperature of the developing unit, the internal temperature and ambient temperature varying depending on a temperature of the developer carrier; and a control unit configured to control restriction on number of pages on which image formation is allowed to be performed continuously and cancellation of the restriction, based on the temperature detected by the temperature detector.

Image forming apparatus with temperature dependent control unit

An image forming apparatus including a fixing unit configured to fix a not-yet-fixed image on a recording medium, includes a fixing target temperature changing part configured to change a fixing target temperature at a time of a fixing process; and a gradation processing part configured to carry out gradation processing on image information. For each sheet of a recording medium on which the fixing process is carried out, the fixing target temperature is changed based on whether halftone processing is carried out and a type of gradation processing to be used.

Image forming apparatus for fixing a not-yet-fixed image

A pasting apparatus includes a pasting member operative to paste a non-transparent medium onto an image-formed surface of a transparent medium; and a conveying member that conveys the non-transparent medium to the pasting member by electrostatic adsorption.

Pasting apparatus and image forming apparatus

An image forming apparatus capable of using a recording medium having a transparent portion includes an image forming unit, a fixing unit, and an applicator. The image forming unit forms an image on a face of the recording medium. The fixing unit fixes the image, formed by the image forming unit, on the face of the recording medium. The applicator applies a non-transparent liquid to at least the fixed image on the face of the recording medium.

Image forming apparatus capable of forming glossy color image

A sheet cutter cuts an adhesion sheet and includes a pair of blades including a first blade including a blade edge and a second blade opposing the first blade and including a blade edge. The pair of blades cuts a border of the adhesion sheet. The adhesion sheet is formed by adhering a first sheet, at least a part of which is transparent and bears a mirror image, to a non-transparent second sheet including an adhesive layer, to oppose the mirror image on the first sheet against the adhesive layer of the second sheet.

Sheet cutter and image forming apparatus including the sheet cutter

An information recording medium includes a transparent recording member and a substantially non-transparent member. The transparent recording member has at least one transparent area and a concavo-convex pattern on a first surface thereof while bearing a reverse toner image on a second surface thereof. The substantially non-transparent member is formed on the second surface of the transparent recording member.

Method of preparing information recording medium

A sheet laminator includes a bonding unit and a restricting unit. The bonding unit bonds a first sheet to a second sheet that includes an adhesive layer. The restricting unit restricts movement of any one of the first sheet and the second sheet thereby preventing bonding between the first sheet and the second sheet before the first sheet and the second sheet reach the bonding unit.

Sheet laminator, image forming apparatus, and sheet laminating method

In an image forming apparatus including an image forming unit that forms an image on a recording medium conveyed from a sheet feeding unit to obtain an image with photographic quality, at least a part of the recording medium has a transparent portion. When an image obtained by reversing an original image is transferred onto the transparent part, sheet-delivery rollers are operable in a direction in which a pressure onto the recording medium is reduced immediately after fixing of the image.

An image forming apparatus that includes an image bearing member to bear a latent electrostatic image, a charging device to charge a surface of the image bearing member, an irradiating device to irradiate the surface of the image bearing member to form the latent electrostatic image thereon, a developing device to develop the latent electrostatic image, an optional cleaning unit to clean the surface of the image bearing member, a transfer device to transfer the developed image to an opaque medium, an optional cleaning device to clean a surface of the transfer device, a fixing device to fix the transferred image on the opaque medium, and an attachment device to attach the fixed image to a transparent medium after the opaque medium is overlaid with the transparent medium, and

Image forming apparatus and recording medium

Growing community of inventors

Kanagawa, Japan

Yukiko Iwasaki