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Koichi Kubo, Yokohama-Shi JP

Koichi Kubo, Yokohama-Shi JP

Patent application numberDescriptionPublished
20080231986INFORMATION RECORDING/REPRODUCING DEVICE - An information recording/reproducing device according to an example of the present invention includes a first head and a second head each having a conductive region formed of a conductive material, a recording medium having a data area from which data is read by the first head, and a servo burst area from which a servo burst signal is read by the second head, a driver for positioning the first head and the recording medium based on the servo burst signal, and a resistance element for covering a surface of the conductive region of the second head.09-25-2008
20080310211RESISTANCE CHANGE MEMORY DEVICE - A resistance change memory device including: a semiconductor substrate; at least one cell array formed above the semiconductor substrate, each memory cell having a stack structure of a variable resistance element and an access element, the access element having such an off-state resistance value in a certain voltage range that is ten times or more as high as that in a select state; and a read/write circuit formed on the semiconductor substrate as underlying the cell array, wherein the variable resistance element comprises a recording layer formed of a first composite compound expressed by A12-18-2008
20090121208NONVOLATILE SEMICONDUCTOR MEMORY DEVICE AND METHOD OF MANUFACTURING THE SAME - A nonvolatile semiconductor memory device comprises a plurality of first lines; a plurality of second lines crossing the plurality of first lines; a plurality of memory cells each connected at an intersection of the first and second lines between both lines and including a variable resistor operative to store information in accordance with a variation in resistance; and a protection film covering the side of the variable resistor to suppress migration of cations at the side of the variable resistor.05-14-2009
20090189963LIQUID CONTAINER - A liquid container includes a housing having a supply port leading out liquid contained in the housing, a spring member configured to generate a negative pressure, a flexible member joined to the housing to form a liquid chamber, a plate member disposed between the flexible film and the spring member, a lid member configured to cover the flexible member and secured to the housing, and a rib member movably disposed in a space surrounded by the lid member and the flexible member and configured to regulate the shape of the flexible member and the position of the plate member.07-30-2009
20090244217INK CONTAINER AND INK JET RECORDING SYSTEM - An ink container for retaining ink includes an ink containing body, an elastically displaceable supporting member, a light emitting portion, a light receiving portion for receiving light from the light emitting portion, a display portion for displaying the received light, and a light guide portion for optically connecting the light receiving portion and the display portion so as to guide the light received by the receiving portion to the display portion. The supporting member at least partly functions as the light guide portion. The light receiving portion is located, with a gap with respect to the light emitting portion, so as to cover the light emitting portion. The light receiving portion approaches the light emitting portion when the supporting member approaches the ink containing body by being subjected to urging toward the ink containing body. The light receiving portion moves apart from the light emitting portion when the supporting member moves apart from the ink containing body by being released from the urging toward the ink containing body.10-01-2009
20100020141INK TANK AND RECORDING APPARATUS - An ink tank includes a stirrer supported in a freely moveable manner near an inner wall of an ink storage chamber. When the stirrer moves closest to the inner wall, a predetermined gap is formed between opposing surfaces of the inner wall and the stirrer.01-28-2010
20100053280INK TANK - An ink tank containing ink including a pigment component effectively prevents a problem that an ink having a higher concentration and including a sedimentary pigment is led out, even in a case where the ink tank is left unused on a printing apparatus for a long time. To this end, an ink leading-out port placed in an ink containing chamber, and used to supply the ink to a printing head is located higher than a lowermost portion of the ink containing chamber, and is also formed in an inclined surface inclined to a gravitational direction. Thereby, the sedimentary pigment slides the inclined surface, and thus is settled down in a position away from the ink leading-out port.03-04-2010
20100202187DATA READ/ WRITE DEVICE - A data read/write device according to an example of the present invention includes a recording layer, and means for applying a voltage to the recording layer, generating a resistance change in the recording layer, and recording data. The recording layer is composed of a composite compound having at least two types of cation elements, at least one type of the cation element is a transition element having a ā€œdā€ orbit in which electrons have been incompletely filled, and the shortest distance between the adjacent cation elements is 0.32 nm or less.08-12-2010
20100238702SEMICONDUCTOR MEMORY DEVICE - A memory array includes a memory cell, the memory cell being disposed between a first line and a second line and being configured by a variable resistor and a rectifier connected in series. The variable resistor is a mixture of silicon oxide (SiO2) and a transition metal oxide, a proportion of the transition metal oxide being set to 55˜80%.09-23-2010
20100259970RESISTANCE CHANGE MEMORY DEVICE - A resistance change memory device including a substrate, first and second wiring lines formed above the substrate to be insulated from each other, and memory cells disposed between the first and second wiring lines, wherein the memory cell includes: a variable resistance element for storing as information a resistance value; and a Schottky diode connected in series to the variable resistance element. The variable resistance element has: a recording layer formed of a composite compound containing at least one transition element and a cavity site for housing a cation ion; and electrodes formed on the opposite sides of the recording layer, one of which serves as a cation source in a write or erase mode for supplying a cation to the recording layer to be housed in the cavity site therein.10-14-2010
20110031467INFORMATION RECORDING AND REPRODUCING APPARATUS - An information recording and reproducing apparatus according to an embodiment has a memory cell including a recording layer operative to change in a reversible manner between a first state having a certain resistance value upon application of a voltage pulse and a second state having a resistance value higher than that of the first state. The recording layer includes a first compound layer represented by a composition formula of A02-10-2011
20110096128INK TANK AND PRINTING APPARATUS - An ink tank with a high volume efficiency and a printing apparatus which are capable of completely using up ink stored in the ink tank. A meniscus holding force (Pm04-28-2011

Patent applications by Koichi Kubo, Yokohama-Shi JP