Ricoh Company, Ltd.

Jatco Corporation

Miyoshi Yushi Kabushiki Kaisha

Richo Company, Ltd.

Masaru Shimada

Kyoji Tsutsui

Masafumi Torii

Hiroyuki Uemura

Hiromi Furuya

Hidehiro Mochizuki

Hiroaki Matsui

Shoji Maruyama

Akira Suzuki

Hiroshi Goto

Tamotsu Aruga

Kakuji Murakami

Keishi Kubo

Fumio Kawamura

Naoya Morohoshi

Toshiyuki Kawanishi

Eiichi Kawamura

Ichiro Sawamura

Takehito Yamaguchi

Keishi Taniguchi

Tadafumi Tatewaki

Hiroki Kuboyama

Hideaki Ema

Kiyofumi Nagai

Masafumi Moriya

Kazuo Hosoda

Yutaka Ariga

Katsushi Sugiyama

Katsuhisa Kamio

Masaomi Sasaki

Chiharu Nogawa

Katsuaki Kokubo

Hideki Ishii

Hideki Nakazawa

Hiroshi Tamura

Noriyoshi Tarumi

Makoto Obu

Hideharu Yamamoto

Atsushi Kutami

Tsutomu Matsuda

Itsuo Ikeda

Hitoshi Shimbo

Norio Kurisu

Tadashi Fujii

Hideo Suzaki

Masanaga Imamura

Akio Nonomura

Masatake Kawashima

Kenji Matsumoto

Masato Urushibata

Structure of control valve body of automatic transmission has valve body enclosures having channels on opposing surfaces thereof; a separate plate sandwiched between the valve body enclosures for defining oil passages on both sides of the separate plate; and an orifice provided at the separate plate. The oil passages on both sides of the separate plate, which are upstream and downstream side oil passages located on upstream and downstream sides of the separate plate, communicate with each other through the orifice. Depth h, in a part facing to the orifice, of the channel corresponding to the downstream side oil passage is set to be shallower than depth of the channel corresponding to the upstream side oil passage, and the depth h of the channel in the part facing to the orifice and a diameter d of the orifice are set so as to satisfy relationship of h&#x2264;3d.

Automatic transmission control valve body structure

An automatic transmission is provided with a frictional engagement member that is operated by hydraulic pressure for shifting the automatic transmission, and includes an air vent opening. An automatic transmission controller includes a pressure regulator and a control section. The pressure regulator regulates the hydraulic pressure in response to a hydraulic pressure control signal. The control section performs an air vent operation of venting air from the frictional engagement member through the air vent opening. The air vent operation includes: a preliminary operation of setting the hydraulic pressure control signal to a preliminary pulse indicative of a preliminary value of pressure, wherein the preliminary value is lower than a normal value of pressure; and a normal operation of setting the hydraulic pressure control signal to a normal pulse indicative of the normal value, wherein the normal pulse follows the preliminary pulse.

Automatic transmission controller

An oil strainer includes a body member which includes a circumferential wall projecting in a first (downward) direction toward an oil pan, and a cover member covering an inside space surrounded by the circumferential wall, and including a suction hole to suck an oil from the oil pan. The body member further includes a communication hole opened into the inside space surrounded by the circumferential wall and adapted to lead to the inlet side of an oil pump, and a discharge hole opened into the inside spaces, and adapted to receive the oil discharged from a pressure regulating valve. The body member further includes a partition wall extending from the circumferential wall, and separating the communication hole and the discharge hole.

Oil strainer with structure for preventing air accumulation

Light-permeable thermosensitive recording material

A method of reversible selective manifestation of different states of a functional element is disclosed. The functional element is composed of at least two compounds and is capable of alternatively assuming (a) a first state in which the two compounds interact to form a regular aggregate structure, or (b) a second state in which the two compounds do not interact, and at least one of the two compounds is in an aggregate or crystallized state. The respective conditions for attaining one of the two states can be reversibly and extremely speedily controlled, for instance, by use of a heat application device.

Method of reversible selective manifestation of different states of functional element

Reversible thermosensitive coloring composition and recording material using the composition and recording method using the recording material

Reversible thermosensitive recording medium

A reversible thermosensitive recording material which includes a recording layer including an electron donating coloring agent and an electron accepting coloring developer and in which an image is reversibly formed and erased by appropriately heating and cooling the recording layer, wherein the recording layer further includes an erasure promoter including one or more secondary amide group having the following formulas (1), (2) or (3):

Reversible thermosensitive recording material and recording method and apparatus therefor

A reversible thermosensitive coloring composition including an electron donating coloring agent and an electron accepting color developer, wherein the composition achieves a colored state when heated at a temperature not lower than a coloring temperature and then cooled at a cooling speed (a), and the composition in the colored state achieves a non-colored state when heated at a temperature lower than the coloring temperature and not lower than an erasing temperature, or when heated at a temperature not lower than the coloring temperature and then cooled relatively slowly compared to the cooling speed (a), and wherein the electron accepting color developer includes a phenolic compound having the following formula (1):

A reversible thermal recording method using a color/non-color type reversible thermosensitive recording material which has a recording layer formed overlying at least one side of a substrate and including an electron donating coloring agent and an electron accepting color developer and which reversibly forms a colored state and a non-colored state by being appropriately heated and cooled. The recording layer having images of the colored state which have been formed in the recording layer is heated to erase the image, and imagewise heated either at substantially the same time as, or after, the image erasing operation to record new images therein, and then relatively rapidly cooled to maintain the new images. A reversible thermal recording apparatus therefor is also provided.

Reversible thermal recording method and apparatus therefor

A reversible thermosensitive recording material which includes a recording layer including an electron donating coloring agent and an electron accepting coloring developer and in which an image is reversibly formed and erased by appropriately heating and cooling the recording layer, wherein the recording material has an image density retention not less than about 60% when the recording material having an image is allowed to settle in a dry place at 50.degree. C. for 24 hours, a residual image density not greater than about 0.03 when the recording material having an image is heated at 110.degree. C. for 0.5 seconds to erase the image, and a residual image density after light irradiation not greater than about 0.04 when the recording material having an image is heated at 110.degree. C. for 0.5 seconds to erase the image after light of 5,000 lux is irradiated to the recording material for 100 hours.

Reversible thermosensitive recording material and recording method and

A reversible thermosensitive coloring composition is provided, which contains (a) an electron-donating coloring compound; and (b) an electron-accepting compound, which is an aromatic carboxylic acid compound comprising at least one hydrocarbon group, which induces color formation in the electron-donating coloring compound. The reversible thermosensitive coloring composition reversibly assumes a color-developed state or a decolorized state, in response to at least one of (1) the temperature thereof when heated and (2) the cooling rate of the reversible thermosensitive coloring composition when cooled after the heating thereof. A reversible thermosensitive recording medium using the coloring composition is also provided.

Reversible thermosensitive coloring composition and reversible

A reversible thermosensitive coloring composition contains an electron-donating coloring compound and an electron-accepting compound, and is capable of reversibly assuming a color-developed state or a decolorized state depending upon the the temperature of the reversible thermosensitive coloring composition when heated, and/or the cooling rate of the reversible thermosensitive coloring composition when cooled after the heating thereof, with the electron-accepting compound being a compound of formula (I):

A reversible thermosensitive composition including a coloring agent and a developer and capable of assuming a colored state and a discolored state depending upon the thermal hysteresis thereof. The developer is a phenol compound represented by the formula: ##STR1## wherein R.sup.1 and R.sup.3 represent, independently from each other, a substituted or non-substituted hydrocarbon group, R.sup.2 represents a substituted or non-substituted aliphatic hydrocarbon group having at least two carbon atoms, with the proviso that the total number of carbon atoms of R.sup.1, R.sup.2 and R.sup.3 is at least 8, X and Y represent, independently from each other, a divalent group having a nitrogen atom or an oxygen atom and r is an integer of between 1 and 3.

Growing community of inventors

Shizuoka, Japan

Masaru Shimada