Ricoh Company, Ltd.

Hiroko Ohkura

Kazunori Ito

Eiko Hibino

Makoto Harigaya

Hiroshi Deguchi

Hajime Yuzurihara

Yohta Sakon

Takumi Atake

Masaki Kato

Hiroyoshi Sekiguchi

Nobuaki Onagi

Hiroshi Miura

Masaru Shinkai

Akira Izutani

Noriyuki Iwata

Katsuhiko Tani

Yoshiyuki Kageyama

Takashi Shibaguchi

Mikiko Takada

Mikiko Abe

Akiko Bannai

Yasutomo Aman

Masahiro Masuzawa

Miku Mizutani

Yohei Shiren

Yoshifumi Ohba

Yuki Nakamura

Katsuyuki Yamada

Ichiroh Fujii

Akira Shimofuku

Shinya Narumi

Hiroyuki Iwasa

Yuusuke Fujita

Mikiko Kawasakidaishi Park Familia 403 Abe

A wiping member to wipe a nozzle surface of a liquid discharging head includes a first layer configured to be brought into contact with the nozzle surface and one or more other layers, wherein the following relation is satisfied: t1<t2, where t1 represents the thickness of the first layer and t2 represents the thickness of the one or more other layers, wherein the porosity of the first layer is smaller than the porosity of at least one of the one or more other layers.

Wiping member, wiping method, and image forming apparatus

A wiping method for wiping a nozzle surface of a liquid discharge head includes the step of relatively moving the liquid discharge head and a wiper impregnated with a cleaning fluid. The cleaning fluid contains a lactone compound in an amount of 5% by mass or more. The wiper includes a first layer configured to contact the nozzle surface and one or more layers other than the first layer. The first layer has a thickness of t, the one or more layers other than the first layer have a total thickness of t, and tis smaller than t. A void ratio of the first layer is smaller than a void ratio of at least one of the one or more layers other than the first layer.

Wiping method and image forming apparatus

A wiper for wiping a nozzle surface of a liquid discharge head that discharges liquid from the nozzle is provided. The wiper comprises a plurality of layers including at least a first layer, and the first layer has a surface that contacts the nozzle surface. The surface that contacts the nozzle surface has a maximum height of waviness Wz of from 100 to 600 &#x3bc;m.

Wiper, wiping device, liquid discharge apparatus, and wiping method

A liquid discharging device includes a liquid discharging head including a nozzle and having a nozzle forming surface, the liquid discharging head configured to discharge a liquid through the nozzle, a wiping member configured to wipe the nozzle forming surface, the wiping member having a first layer configured to be brought into contact with the nozzle forming surface and at least one more layer, and a cleaning liquid that is applied to the nozzle forming surface, wherein the static surface tension of the cleaning liquid is greater than the static surface tension of the liquid.

Liquid discharging device and wiping method

A wiping device includes a wiping member configured to wipe a nozzle forming surface of a liquid discharging head that discharges a liquid from a nozzle, the wiping member having a first layer configured to be brought into contact with the nozzle forming surface and at least one more layer, and a cleaning liquid that is applied to the nozzle forming surface, the cleaning liquid containing a compound represented by the following Chemical formula 1 and a glycol ether compound, 

Wiping device, liquid discharging device, and wiping method

A wiping device includes a wiping member configured to wipe a nozzle forming surface of a liquid discharging head that discharges a liquid from a nozzle, the wiping member containing fabric; and a pressing member configured to press the wiping member to the liquid discharging head, wherein the wiping member satisfies the following relationship 1: 0.8&#x3c;(Sb/Ss)&#x3c;1.2, relationship 1, where, at 60 seconds after a coloring liquid containing a coloring material and distilled water is dripped onto a surface of the wiping member in contact with the nozzle forming surface and Ss represents a spreading area of the coloring material on the surface of the wiping member in contact with the nozzle forming surface and Sb represents a spreading area of the coloring material on a surface of the wiping member not in contact with the nozzle forming surface.

Wiping device, wiping member, liquid discharging device, and wiping method

A wiping member that wipes a nozzle surface of a liquid discharging head, includes a first region having an average porosity P1, a second region disposed on the first region, having an average porosity P2 greater than P1, and a third region disposed on the second region having an average porosity P3 greater than P2, wherein the wiping member has a thickness t in the direction perpendicular to the surface that contacts the nozzle surface and each of the first region, the second region, and the third region has a thickness of t/3 in the direction, wherein P2/P1 is from 1.1 to 1.4.

Wiping member, wiping method, and wiping device

A reaction material formed body into which a reaction material reacting with a reaction medium to store or release heat is formed includes first and second opposite surfaces and multiple heat transfer enhancing members extending at least from the first surface to the second surface. At least two or more of the heat transfer enhancing members are oriented in a predetermined single direction.

Reaction material formed body and heat storage and release unit

A reaction material for a chemical heat pump includes type III anhydrous gypsum, a magnesium compound, and CaMgSO. The reaction material for the chemical heat pump structurally changes between a compound including type III anhydrous gypsum, the magnesium compound, and CaMgSO, and a compound including hemihydrate gypsum, a hydrate of the magnesium compound, and a hydrate of CaMgSOwhen subjected to heat storage process and heat release process. x is 0&#x3c;x&#x3c;1.

Reaction material and chemical heat pump

An optical recording medium contains a recording layer being composed of a phase-change recording material where at least four elements, Ga, Sb, Sn and Ge are contained and the transfer linear velocity is 20 m/s to 30 m/s, and when the wavelength of a recording/reproducing light is within the range of 650 nm to 665 nm and the recording linear velocity is 20 m/s to 28 m/s, the refractive index Nc and the extinction coefficient Kc in a crystalline state and the refractive index Na and the extinction coefficient Ka in an amorphous state in the recording layer respectively satisfy the following numerical expressions: 2.0&#x2266;Nc&#x2266;3.0, 4.0&#x2266;Kc&#x2266;5.0, 4.0&#x2266;Na&#x2266;5.0, and 2.5&#x2266;Ka&#x2266;3.1, and information is recordable at the range of 20 m/s to 28 m/s of recording linear velocity.

Optical recording medium

An optical recording medium having first protective layer, recording layer, second protective layer, and reflective layer, wherein the recording layer contains a phase-change material represented by Formula (1&#x2033;1), Formula (1-2), or Formula (1-3); the second protective layer contains one selected from zinc oxides, indium oxides, tin oxides, mixtures thereof, and materials Formula (2), and materials Formula (3). Formula (1&#x2033;1): InSbX1(X1: Ge, Te, Zn, Mn, or mixture thereof, 0.10&#x2266;&#x3b1;1&#x2266;0.25, 0.65&#x2266;&#x3b2;1&#x2266;0.80, and 0.04&#x2266;&#x3b3;1&#x2266;0.15) Formula (1-2): GaSbSnGeX2(X2: Te, Zn, Mn, In, or mixture thereof, 0.04&#x2266;&#x3b1;2&#x2266;0.09, 0.56&#x2266;62&#x2266;0.79, 0.05&#x2266;&#x3b3;2&#x3c;0.30, 0.03&#x2266;&#x3b4;2&#x2266;0.19, and 0&#x2266;&#x2208;2&#x2266;0.09) Formula (1-3): MnSbSnGeX3(X3: Te, In, Zn, Bi, or mixture thereof, 0.04&#x2266;&#x3b1;3&#x2266;0.09, 0.56&#x2266;63&#x2266;0.79, 0.05&#x2266;&#x3b3;3&#x2266;0.29, 0.03&#x2266;&#x3b4;3&#x2266;0.23, and 0&#x2266;&#x2208;3&#x2266;0.09) Formula (2): ZnO&#x2014;Al&#x2014;Y [(100&#x2212;&#x3b1;4&#x2212;64):&#x3b1;4:&#x3b2;4] (Y: Mn, Ge, Ti, or mixture thereof, 0.5&#x2266;&#x3b1;4&#x2266;10.0, and 0&#x2266;B4&#x2266;25.0) Formula (3): ZnO&#x2014;AlO&#x2014;Z [(100&#x2212;&#x3b1;5&#x2212;65):&#x3b1;5:&#x3b2;5] (Z: Mn oxide, Ge oxide, Ti oxide, or mixture thereof, 0.5&#x2266;&#x3b1;5&#x2266;10.0, and 0&#x2266;65&#x2266;30.0).

To provide an optical recording medium in which error-causing short marks are produced in numbers small enough excellent high-recording characteristics and in which amorphous marks are uniform in shape. The optical recording medium includes: a first protective layer; a recording layer containing Sb as a main ingredient; a second protective layer; and a reflective layer, the first protective layer, the recording layer, the second protective layer and the reflective layer being provided in the order in which light passes through the medium for recording and reproduction of information, wherein the first protective layer and/or the second protective layer, both of which are in contact with the recording layer, are/is formed of a crystalline oxide.

A recording method of an optical recording medium comprises irradiating the medium with a laser having m pulse sets each comprising a heating pulse and a cooling pulse, in which m is a natural number; and scanning the medium with the laser at a scanning speed v to record marks each of a length nT, in which n is a natural number of 3 or more and T is a clock cycle, wherein a length Tof a final cooling pulse is determined in accordance with the scanning speed v using the following functions, in v&#x3c;v, T/T=f(v) in v v, T/T=f(v), where the f(v) and f(v) each represents a continuous function of the scanning speed v and satisfies the condition where an existence ratio of abnormal marks is 1.0&#xd7;10or less, and vis a selectable scanning speed.

Optical recording medium, recording method thereof and evaluation method of optical recording medium

To provide a method of recording information to an optical recording medium comprising recording a mark of time length nT (n: natural number of 3 or more, T: clock cycle) in an optical recording medium capable of supporting different recording speeds and having constant information line density, and irradiating the optical recording medium, the optical recording medium irradiated with light of alternating mheating pulses of power Pw and mcooling pulses of power Pc (where mis a natural number smaller than n) provided v&#x3c;v(where v is a scanning speed and vis a scanning speed unique to each optical recording medium), the optical recording medium irradiated with light of alternating mheating pulses of power Pw and mcooling pulses of power Pc (where mis a natural number smaller than n) provided v&#x2267;v, wherein the condition n/m&#x2267;n/mis satisfied.

Optical recording medium and method of recording to the same

The phase-change optical recording medium having a substrate, and at least a first protective layer, a recording layer composed of a phase-change material, a second protective layer and a reflective layer disposed on the substrate in this sequence has a maximum recording linear velocity Vof 20 m/s to 60 m/s, a range of linear velocity recordable even when the recording linear velocity is continuously changed of 0.3Vto 1.0V, and no occurrence of crystals causing a reproduction error in recorded marks.

Growing community of inventors

Yokohama, Japan

Hiroko Ohkura