Ricoh Company, Ltd.

Hitachi Information & Telecommunication Engineering, Ltd.

Kazumi Suzuki

Yoshitaka Yamauchi

Tatsuya Morita

Yohichiroh Watanabe

Hisashi Nakajima

Ichiro Kadota

Hiromitsu Takagaki

Masaki Yoshino

Akihiro Kaneko

Yu Naito

Takashi Fujita

Yoshihiko Hotta

Takashi Seto

Toyoshi Sawada

Yoshihiro Norikane

Shin Kayahara

Shinji Ohtani

Hideki Kosugi

Takahiro Honda

Tetsuya Amano

Atsushi Nakafuji

Shingo Sakashita

Tsuyoshi Sugimoto

Katsuaki Miyawaki

Hiroshi Nakai

Kei Yasutomi

Takeshi Takemoto

Jun Yura

Hirokatsu Suzuki

Saori Yamada

Masana Shiba

Azumi Miyaake

Namie Suzuki

Nekka Matsuura

Masashi Nagayama

Atsushi Nagata

Atsushi Kutami

Hirohmi Tamura

Kohtaroh Ogino

Katsuyuki Uematsu

Masato Tanaka

Akira Suzuki

Hiroshi Yamashita

Katsunori Kurose

Hiroyuki Suhara

Koichi Kato

Hisashi Shoji

Makoto Mori

Kunichika Morohoshi

Rintaro Takahashi

Keiji Kunimi

Yukio Tabata

Natsuko Matsushita

Atsushi Shinozaki

Hiromi Tamura

Atsushi Yamamoto

Takeo Tsukamoto

Shinya Nakayama

Yasushi Nakazato

Satoshi Muramatsu

Minoru Masuda

Masaaki Yamada

Nobutaka Takeuchi

Keisuke Uchida

Yasuaki Iwamoto

Masahide Yamada

Takashi Ukachi

Yoshitaka Sekiguchi

Fumihito Masubuchi

Yasutada Shitara

Seiji Hoshino

Yukiko Nakajima

Hideyuki Santo

Taichi Nemoto

Daisuke Asahina

Tsuyoshi Watanabe

Makoto Kawaguchi

Chikara Imai

Akira Azami

Keiji Makabe

Takeo Yamaguchi

Daiki Yamashita

Koichi Katoh

Akio Kutsuwada

Norio Kudoh

Jun Hitosugi

Hisao Kurosu

Shingo Hayashi

Nobuyoshi Sugiyama

Takashige Omatsu

Kentaroh Kurosu

Kunichika Moroboshi

Motohiro Usami

Kohichi Katoh

Keiko Kajimura

Tomoko Kino

Satoru Sampei

Teruyuki Suzuki

Toyohiro Negami

An image forming apparatus includes an image forming unit and developing containers. The image forming unit includes developing stations to form an image on a print medium with toners, based on input image data. The developing containers contain the toners and are attachable to and detachable from the developing stations. The developing containers include a first developing container containing a first toner and a second developing container containing a second toner having a higher luminescence intensity under invisible light than the first toner. The first toner and the second toner are toners that form an image having a higher luminescence intensity under the invisible light than under visible light. The image forming unit adheres the second toner to the print medium before adhering the first toner when the image forming unit superimposes the first toner and the second toner one atop another on the print medium.

Image forming apparatus, image forming method, and printed material

A toner includes polyolefin and has an exothermic peak in a range from 40° C. to 70° C. in a cooling process of the polyolefin by the DSC after a first heating process of the polyolefin by DSC. The polyolefin does not have an exothermic peak in the cooling process of the polyolefin by the DSC after the first heating process of the polyolefin by the DSC, and has an exothermic peak in a range from 0° C. to 30° C. in a second heating process of the polyolefin by the DSC.

Toner, developer, toner set, toner receiving unit, image forming apparatus, and image forming method

Printed matter is provided which includes a recording medium, a colored layer overlying the recording medium, and an infrared-absorbing-pigment-containing layer overlying the recording medium and underlying the colored layer. The colored layer contains a colorant. The infrared-absorbing-pigment-containing layer contains an infrared absorbing pigment having an average diameter of from 120 to 250 nm in the infrared-absorbing-pigment-containing layer.

Printed matter, infrared-absorbing-pigment-containing toner, tonner set, image forming method, and image forming apparatus

An image forming method is provided. The image forming method includes: forming an electrostatic latent image on an electrostatic latent image bearer; developing the electrostatic latent image on the electrostatic latent image bearer with a toner to form a toner image; transferring the toner image from the electrostatic latent image bearer onto a continuous resin film; fixing the toner image on the continuous resin film with a heat roller or a heat belt. The toner contains a maleic-acid-modified polyolefin having a polypropylene block in a main chain.

Image forming method and image forming apparatus

A toner is provided. The toner comprises a maleic-acid-modified polyolefin having a polypropylene block in a main chain and having a weight average molecular weight of 60,000 or more.

Toner, toner accommodating unit, image forming apparatus, and image forming method

Provided is mass spectrometry including applying a laser beam to a matrix dot disposed on a surface of a measurement sample. One of: a laser spot appearing in the measurement sample when the laser beam is applied to the matrix dot; and the matrix dot, is completely enclosed in the other.

Mass spectrometry

A method for preparing a measurement sample for MALDI mass spectrometry, the method including applying a laser beam to a base including a matrix used for preparing the measurement sample for MALDI mass spectrometry, the matrix being disposed on a surface of the base, in a manner that the laser beam is applied to a surface of the base opposite to the surface including the matrix, to make the matrix fly from the base to be disposed at a predetermined position of an analyte of MALDI mass spectrometry, wherein the base includes a laser energy absorbable material, and wherein laser energy of the laser beam has a wavelength of 400 nm or longer.

Method, device, and base for preparing measurement sample for MALDI mass spectrometry

Provided is a toner including toner particles, each toner particle includes: a base particle including a binder resin; and external additive particles, wherein the external additive particles include particles each having an equivalent circle diameter of 10 nm or greater, a volume average particle diameter of the particles each having an equivalent circle diameter of 10 nm or greater is 80 nm or greater but 140 nm or less, and a ratio (circumscribed circle area/particle area) of a circumscribed circle area of the particle having an equivalent circle diameter of 10 nm or greater to a particle area of the particle having an equivalent circle diameter of 10 nm or greater is 1.60 or greater but 2.60 or less.

Toner, toner stored unit, and image forming apparatus

A method for preparing a measurement sample for MALDI mass spectrometry, the method including applying a laser beam to a base containing a matrix disposed on a surface of the base, in a manner that the laser beam is applied to a surface of the base opposite to the surface on which the matrix is disposed, to make the matrix fly from the base to be disposed at a predetermined position of an analyte of MALDI mass spectrometry.

Method and device for preparing measurement sample for MALDI mass spectrometry, measurement sample for MALDI mass spectrometry, MALDI mass spectrometry method, and non-transitory recording medium for preparing measurement sample for MALDI mass spectrometry

Provided is a toner including a binder resin and a colorant, wherein the colorant includes Solvent Red 49, and an acid value of the toner is 9.0 mgKOH/g or greater but 30.0 mgKOH/g or less.

Toner, toner stored unit, image forming apparatus, and image forming method

An image forming apparatus including an image forming unit, a fixing device, and circuitry is provided. The image forming unit is configured to perform a special image forming operation that forms a color toner image and a special toner image with a color toner and a special toner, respectively, on a recording medium and a normal image forming operation that forms the color toner image without forming the special toner image on the recording medium. The fixing device is configured to fix the color toner image and the special toner image on the recording medium. The circuitry is configured to perform, in the special image forming operation, a toner amount suppression control that makes an amount of the color toner on the recording medium per unit area smaller than that in the normal image forming operation.

Image forming apparatus using special toner and performing fixing condition change control

Image forming apparatus having toner amount suppression control

A toner set including a color toner including a binder resin and a colorant, and an invisible toner including a binder resin and a near infrared light-absorbing material, wherein 60-degree glossiness of a solid image of the invisible toner is 30 or greater, and the 60-degree glossiness of the solid image of the invisible toner is higher than 60-degree glossiness of a solid image of the color toner by 10 or greater.

Toner set, image forming method, and image forming apparatus

A toner is provided. The toner includes at least two types of polyester resins and a release agent. When the toner is subjected to a dynamic viscoelasticity measurement at a frequency of 6.28 rad/sec to obtain a temperature-dependent curve of loss tangent (tan &#x3b4;), and the temperature-dependent curve is differentiated one time with temperature, a resulting curve has a maximum value of 0.07 or more and a minimum value of 0.025 or less within a temperature range of from 85&#xb0; C. to 110&#xb0; C. When the toner is subjected to a differential scanning calorimetry (DSC), an endothermic amount measured in a first temperature rising in the DSC is 3.5 J/g or less within a temperature range of from 85&#xb0; C. to 120&#xb0; C.

Toner, developer, toner storage unit, image forming apparatus, image forming method, and method for producing printed matter

A toner comprising a binder resin and a near-infrared light absorbing material is provided. The toner in the form of a pellet has: a chroma C* of 20 or less in the L*C*h color space; a hue angle h of from 50 to 90 degrees in the L*C*h color space; and a spectral reflectance of 5% or less at a wavelength of from 800 to 900 nm.

Toner, toner set, toner accommodating unit, image forming method, and image forming apparatus

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Shizuoka, Japan

Kazumi Suzuki