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1. 发明专利

JPH1058715A RECORDING APPARATUS BY EJECTING RECORDING LIQUID AND RECORDING METHOD BY THE SAME 失效
公开(公告)号：JPH1058715A
公开(公告)日：1998-03-03
申请号：JP22337896
申请日：1996-08-26
申请人： HITACHI ELECTRONICS , HITACHI KOKI KK
发明人： HAYASHI SEIICHI , MITANI MASAO
IPC分类号： B41J2/21 , B41J2/05 , B41M5/00
摘要： PROBLEM TO BE SOLVED: To accomplish an accuracy of recording density correctly at low costs by arranging liquid ejecting openings of a plurality of nozzles in rows and columns, and disposing at least one of the rows and columns in shifted relation in its alternative positions to install a group of nozzles in a simple structure. SOLUTION: Composite recording (B dots 26, C dots 27, M dots 28, and Y dots 29) by the dot position pattern of a dot group (rows or lines) of black B dots 22, cyan C dots 23, mazenta M dots 24, and yellow T dots 25 is a composite recording by four color uniform position disposition. The recording density of each color is 600dpi, and the recording speed becomes twice as high as that of composite recording in the conventional four color same position disposition. Also, the recording speed becomes simultaneously twice because adjacent rows and columns are recorded; however, the dot disposition pattern can be allowed to be a high definition and high density by the use of a multi-nozzle recording head achieved on a semiconductor substrate.

2. 发明专利

JPH09174848A INK JET RECORDER 失效
公开(公告)号：JPH09174848A
公开(公告)日：1997-07-08
申请号：JP34048695
申请日：1995-12-27
申请人： HITACHI KOKI KK
发明人： MITANI MASAO , YAMADA KENJI , KAWASUMI KATSUNORI , MACHIDA OSAMU , SHIMIZU KAZUO
IPC分类号： B41J2/05 , B41J2/14 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To make it possible to stably discharge ink at a high speed by reducing the applied energy necessary to discharge the ink. SOLUTION: The ink jet recorder rapidly vaporizes the part of ink in an ink channel by pulse energizing a heating resistor provided near an ink discharge port, and discharges droplet-like ink from the port by means of the expansion force of the bubble. In this case, the resistor is made of Ta-Si-O alloy thin film resistor and Ni metal thin film conductor, and the compositions of the thin film resistor are set to ranges of 64%

3. 发明专利

JPH0976498A INK JET RECORDING HEAD 失效
公开(公告)号：JPH0976498A
公开(公告)日：1997-03-25
申请号：JP23824695
申请日：1995-09-18
申请人： HITACHI KOKI KK
发明人： MITANI MASAO
IPC分类号： B41J2/05 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To uniformalize the heating temperatures of all heating resistors even in an extremely long head by a method wherein a low resistive roundabout common wiring is arranged outside respective divided ink grooves, inside the divided ink grooves a common wiring is arranged, so as to connect both the wirings with the common wiring at the respective divided parts of a common ink groove. SOLUTION: A circuit consists of thin film heating resistors 52, a common thin film wiring conductor 54 and a driver device under the condition that both the sides of respective common ink grooves and the upper part and the outer periphery of a driver IC device are used as wiring regions. In this case, in order to make the resistance value of the common thin film wiring conductor 54 smaller, the common ink groove is divided into a plurality of ink grooves 61A and 61B and low resistive roundabout common wiring made of Al 70 is provided outside the ink groove so as to connect both the wiring 70 and a common wiring made of Ni 54 are connected with a wiring made of Ni 72 through a through hole at the connecting point of the respective divided parts of the common ink groove. Thus, the line resistance of a long common wiring made of Ni 54 can be lowered.

4. 发明专利

JPH08281950A INSPECTING METHOD FOR INK JET RECORDING HEAD 失效
公开(公告)号：JPH08281950A
公开(公告)日：1996-10-29
申请号：JP8521295
申请日：1995-04-11
申请人： HITACHI KOKI KK
发明人： MITANI MASAO
IPC分类号： B41J2/05 , H01C7/00
摘要： PURPOSE: To discriminate the propriety of a head at the stage of a wafer when a large quantity of highly integrated print heads are simultaneously manufactured by emitting a convergent light to a water droplet discharged from the head, and discriminating the propriety of the head from the correlation between the reflected light and a discharge signal. CONSTITUTION: The rear surface (ink supply port side) part along the outer periphery of a print head wafer 21 is vacuum evacuated by a wafer suction water tank 22 to the water tank in which the wafer 21 is a bottom, and the tank is fully filled pure water. An optical system is set to the position of a print head chip 32 to be inspected of the wafer 21. The water droplet is discharged in response to the input of the signal from the normal nozzle of the normal head 32, and the speeds and the shapes of the droplets become substantially the same at all the nozzles. Accordingly, the time of crossing a slitlike light ray converged to the forward predetermined position of the nozzles has predetermined relationship with the input time of the signal. Therefore, since the scattered light at the time of crossing the droplet by the light can be detected by a photosensor, the non-defectiveness or the defectiveness can be discriminated from the time difference from the discharge signals.

5. 发明专利

JPH08207287A INK JET RECORDING HEAD AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH08207287A
公开(公告)日：1996-08-13
申请号：JP1513095
申请日：1995-02-01
申请人： HITACHI KOKI KK
发明人： MITANI MASAO , YAMADA KENJI , MACHIDA OSAMU
IPC分类号： B41J2/05 , B41J2/16
摘要： PURPOSE: To provide an ink jet recording head, never causing troubles in the supply of ink due to the deflection of an orifice plate by capping, and the manufacturing method of the same, in the ink jet recording head, in which the discharging port is capped directly. CONSTITUTION: An ink jet recording head is provided with a plurality of discharging ports 12, discharging ink drops into a direction, orthogonal or substantially orthogonal to a heat generating resistance body, by conducting pulses sequentially through the plurality of heat generating resistance bodies 3 formed on the first surface of a Si-substrate 1, a plurality of individual ink passages 9 and common ink passages 10, provided on a bulkhead layer 8 arranged on the first surface of the Si-substrate opposed to the discharging port, and a discharging port, formed on the orifice plate 11 on the bulkhead layer 8. Accordingly, a plurality of column type spacers 30 are formed near the ink groove 14 in the common ink passage 10 between the first surface of the Si-substrate and the orifice plate.

6. 发明专利

JPH07266570A THERMAL INK JET RECORDING DEVICE AND MAINTENANCE OF RECORDING HEAD 失效
公开(公告)号：JPH07266570A
公开(公告)日：1995-10-17
申请号：JP6500594
申请日：1994-04-01
申请人： HITACHI KOKI KK
发明人： MITANI MASAO
IPC分类号： B41J2/165 , B41J2/18 , B41J2/185 , B41J11/00
摘要： PURPOSE:To reduce the amount of color mixture during the wiping period by allowing an ink reservoir-integrally provided cleaning unit to scan in the direction parallel to a row of orifice of a recording head during head cleaning, and dammy-discharging ink from the immediately after wiping orifice to the ink reservoir. CONSTITUTION:During the cleaning period of a head, a suction conveyer 28 is moved away of the head surface, and a cleaning unit 11 is permitted to move from a predetermined outside custody area of the right or left end of a line head 1. At the same time, a cap is opened and the head sliding surface of a wiper 9 is slidingly cleaned by the end surface of the frame, and the wiping of the head discharge surface is initiated and ink is collected on the sliding surface side of the wiper 9 and then flows down along the wiper 9 to finally be filled in an ink reservoir 10. At this time, though the row of the ink discharge ports is separated little, ink lying around the ink discharge port undergoes color mixture slightly. Before the color-mixed ink expands and spreads to the vicinity of the individual ink flow path, it is dammy-discharged to be filled in the ink reservoir 10 in order to resolve its color mixture completely.

7. 发明专利

JPH06245004A FACSIMILE EQUIPMENT 失效
公开(公告)号：JPH06245004A
公开(公告)日：1994-09-02
申请号：JP3030993
申请日：1993-02-19
申请人： HITACHI KOKI KK
发明人： MITANI MASAO
IPC分类号： H04N1/00
摘要： PURPOSE:To attain further reduction in size and weight by arranging the longitudinal direction of a thermosensitive paper and a handset in parallel and making the outside dimension of an equipment in the direction almost the same as the larger one of a transmitting original reading width or a thermosensitive recording width. CONSTITUTION:A thermosensitive recording part is composed of a extremly small thermal head structured by die-bonding a monolithic LSI thermal print head to a heat sink, a platen roller and the thermosensitive paper so as to send a printed thermosensitive paper from an opening part by rotary-driving the platen roller by a pulse motor. In this case, the longitudinal direction of the thermosensitive paper and the handset 12 are arranged in parallel and the outside dimension of the equipment in the longitudinal direction is made almost the same as the larger one of the transmitting original reading width and the thermosensitive recording width. Thereby, epochal reduction in size and weight is attained and in the example of miniaturizing most, a telephone facsimile equipment smaller than a desk top electric equipment in a present state can be obtained.

8. 发明专利

JPH0553457A HEAT FIXING DEVICE 失效
公开(公告)号：JPH0553457A
公开(公告)日：1993-03-05
申请号：JP21126991
申请日：1991-08-23
申请人： HITACHI KOKI KK
发明人： MITANI MASAO
IPC分类号： G03G15/20
摘要： PURPOSE:To provide a heat fixing unit concurrently improved with the nonstickiness and heat conductivity of the fluorinated carbon resin coated on a metal belt and simplified with the production process. CONSTITUTION:A heater 1 is provided at least on one of a pair of rollers 6, 11 pressed to each other and rotated, an image carrier 7 with an unfixed toner image is fed between the rollers 6, 11 to heat-melt and fix the unfixed toner image in a heat fixing device. The roller 11 with the heater 1 of the heat fixing device is constituted of an integrated structure type heating/cooling device 10 consisting of a cooling structural body 3 concurrently serving as a supporter and the heater 1, an endless metal belt 4 rotated in contact with the integrated structure type heating/cooling device 10 and dispersed with fluorinated graphite fine grains and surface-treated with dispersion nickel plating on the outer surface in contact with the image carrier 7, and a drive roller 5 rotatively driving the belt 4 while applying tension to the belt 4.

9. 发明专利

JPH04305675A THERMAL FIXING DEVICE 失效
公开(公告)号：JPH04305675A
公开(公告)日：1992-10-28
申请号：JP6674091
申请日：1991-03-29
申请人： HITACHI LTD , HITACHI KOKI KK
发明人： HIRAOKA TSUTOMU , MATSUNO JUNICHI , MITANI MASAO
IPC分类号： B65H5/02 , G03G15/20
摘要： PURPOSE:To prevent deviation of an endless belt without utilizing alignment control of a driving pulley and to carry out fixing at a low cost and with prolonged service life by using a metallic endless belt and the driving pulley provided, with a guide on its edge to drive this belt, in the thermal fixing device utilizing the endless belt. CONSTITUTION:The metallic endless belt 1 is hung between the driving pulley 2 and a heat generating resistor 3. It is driven in the carrying direction of paper 5 while being abraded and slid against the exothermic resistor 3 by rotation of the driving pulley 2 and a back up roll 4. A guide 2 is provided on both edge parts of the pulley 2 so that the width of the endless belt is matched. Thus, the running safety of the metallic endless belt 1 is realized.

10. 发明专利

JPH04216559A ELECTROPHOTOGRAPHIC RECORDER 失效
公开(公告)号：JPH04216559A
公开(公告)日：1992-08-06
申请号：JP41104390
申请日：1990-12-17
申请人： HITACHI KOKI KK
发明人： SAITO SUSUMU , ANZAI MASAYASU , MITANI MASAO
IPC分类号： G03G5/10
摘要： PURPOSE:To form a light spot well converged on a photosensitive material film by specifying the range of thickness variation of a transparent substrate. CONSTITUTION:A photosensitive material film is formed on one surface of a transparent base body having refractive index n. Light source for optical recording and a lens having diameter (a) and focus length (f) to focus the light of wavelength lambda emitted from the light source are disposed in the other side of the base body. When optical recording is to be performed through the transparent base body, the thickness variation d of the base body is specified to the range represented by formula I. A mechanism to keep a constant distance between the photosensitive material film and the focusing lens is provided, and the transparent substrate is made cylindrical.

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