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1. 发明专利

JP2004001575A Ink absorber, its manufacturing method and ink tank using the same 有权
公开(公告)号：JP2004001575A
公开(公告)日：2004-01-08
申请号：JP2003315611
申请日：2003-09-08
申请人： Fuji Xerox Co Ltd , 富士ゼロックス株式会社
发明人： OGAWA KATSUHIDE , TAKAGI ATSUSHI , ISHISE TATSUHIRO , FUJIMURA YOSHIHIKO
IPC分类号： B41J2/175
摘要： PROBLEM TO BE SOLVED: To easily adjust holding capacity and feeding capacity for ink, to maintain the stable ink holding capacity for a long time, to favorably maintain the filling workability for ink, and to effectively prevent even an ink concentration decrease phenomenon.
SOLUTION: A polyester felt fiber material is used as an ink absorber set inside an ink tank for supplying the ink to an ink jet head. A fiber diameter of the fiber material is set to be 0.5-8 denier and a fiber length is set to be 10-115 mm. At least either of the polyester felt fiber material and an acrylonitrile felt fiber material is used, and the used felt fiber materials are entwined when arranged. The ink tank with these ink absorbers set inside is also provided.
COPYRIGHT: (C)2004,JPO

2. 发明专利

JPH09111164A INK BY INK JET RECORDING AND INK JET RECORDING METHOD 失效
公开(公告)号：JPH09111164A
公开(公告)日：1997-04-28
申请号：JP27007295
申请日：1995-10-18
申请人： FUJI XEROX CO LTD
发明人： YUI TOSHIKI , KOJIMA HITOSHI , HASHIMOTO TAKESHI , OGAWA KATSUHIDE
IPC分类号： B41J2/01 , B41J2/19 , B41M5/00 , C09D11/00 , C09D11/322 , C09D11/326 , C09D11/328 , C09D11/38
摘要： PROBLEM TO BE SOLVED: To prepare an ink by ink recording which is excellent in removal of bubbles and less likely to cause dropouts of an image and can offer excellent image quality and ejection stability by specifying the surface tension of an ink by ink jet recording comprising water, a colorant, and a water-soluble org. solvent. SOLUTION: A water-soluble dye, particularly a direct dye or an acid dye, in such an amt. as will give a concn. of 0.1 to 10wt.% in an ink, or a pigment as a colorant e.g. carbon black, brilliant carmine BS, lake carmine FB, brilliant fast scarlet, diazo yellow, or phthalocyanine blue, in such an amt. as will give a concn. of 0.1 to 10wt.% in an ink, is mixed with a water-soluble org. solvent, such as ethylene glycol, in an amt. of 0.5 to 50wt.% based on the ink, followed by addition of 0.01 to 1.5wt.% surfactant, ion-exchanged water, pure water and the like. The surfactant and the water-soluble org. solvent are used so that the difference between the surface tension of the ink at 20 deg.C and the surface tension of the composition excluding the colorant is brought to not less than 1.0mN/m.

3. 发明专利

JPH07237299A INK TANK AND INK CHARGING METHOD 失效
公开(公告)号：JPH07237299A
公开(公告)日：1995-09-12
申请号：JP5529494
申请日：1994-02-28
申请人： FUJI XEROX CO LTD
发明人： OGAWA KATSUHIDE
IPC分类号： B41J2/175
摘要： PURPOSE:To provide an ink tank which can charge ink with a low-priced device, maintain charged ink uniformly and use the ink up to the bottom, and a method for ink charging into the ink tank. CONSTITUTION:An ink introducing pipe 2 is opened, and an ink holding member 3 is compressed with a compression pad 5. After the completion of compression, the ink introducing pipe 2 is closed. Ink is charged at a fixed pressure through an ink charging pipe 6. The charged ink is penetrated into the ink holding member 3. The pressure in an ink tank rises with the charged ink to push up the compression pad 5 from the inside of the ink tank. As a result, the pressure in the ink tank returns to a normal condition, and at the same time, penetration of ink into the ink holding member 3 and release of the compression condition are carried out, thus charging ink into the ink holding member 3 uniformly. At the time of compression release, the ink holding member 3 is prevented from floating with a fixed rib 4.

4. 发明专利

JPH0725036A INK JET RECORDER 失效
公开(公告)号：JPH0725036A
公开(公告)日：1995-01-27
申请号：JP19282393
申请日：1993-07-07
申请人： FUJI XEROX CO LTD
发明人： OGAWA KATSUHIDE , MAKINO SHIGEO , FUJIMURA YOSHIHIKO
IPC分类号： B41J2/21
摘要： PURPOSE:To independently conduct monochromatic printing and color printing and to print at a high speed in the case of the monochromatic printing. CONSTITUTION:Number of nozzles of a black ink print head 1K is 2N, number of nozzles of color ink print heads 1C, 1M, 1Y are N, and placed in a carriage 2. In the case of color printing, the head 1K is used only at a half nozzle from above. In the case of first scanning, a printing area 6K is printed to be recorded by the head 1K. A recording sheet 4 is conveyed by a print recording width D. In the case of second scanning, a new printing area is printed by the black head. Simultaneously, a printing area 6KCMY is printed to be recorded by three color ink print heads to be superposed on the first scanning printing. The monochromatic printing is conducted by 2N of nozzles of the head 1K.

5. 发明专利

JPH1191108A INK-JET RECORDING HEAD AND ITS MANUFACTURE 失效
公开(公告)号：JPH1191108A
公开(公告)日：1999-04-06
申请号：JP25866497
申请日：1997-09-24
申请人： FUJI XEROX CO LTD
发明人： KOTAKE NAOSHI , KOIZUMI YUKIHISA , KATAOKA MASAKI , OGAWA KATSUHIDE , KENMOCHI NOBUO
IPC分类号： B41J2/05 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To provide an ink-jet recording head and its manufacturing method whereby a feed passage for liquid can be formed easily, and the head is manufactured efficiently and made useable to meet many kinds of liquid. SOLUTION: This ink-jet recording head has a heat-generating body array 2 of a plurality of heat-generating bodies formed on a substrate, a first groove 3 as a common liquid chamber formed in parallel to the array 2, and a second groove 7 formed at a rear face of the substrate 1 schematically orthogonal to the first groove 3. At this time, the first groove 3 and second groove 7 are communicated with each other at a part where the grooves intersect. Meanwhile, liquid discharge openings 5 corresponding to the heat-generating bodies and corresponding individual passages are formed in a nozzle plate 4 which is united with the substrate 1. The second groove 7 can be formed, e.g. by cutting simultaneously in a process wherein the substrate is cut, in other words, the second groove can be processed easily. Moreover, the substrate is constructed to be penetrated only at the intersecting part. A yield is accordingly improved without any problem in terms of strength.

6. 发明专利

JPH1128808A LIQUID JET RECORDING HEAD AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH1128808A
公开(公告)日：1999-02-02
申请号：JP18641097
申请日：1997-07-11
申请人： FUJI XEROX CO LTD
发明人： KATAOKA MASAKI , OGAWA KATSUHIDE , KOTAKE NAOSHI , KENMOCHI NOBUO , KOIZUMI YUKIHISA
IPC分类号： B41J2/01 , B41J2/05 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To obtain a liquid jet recording head which can be reduced in size while increasing the degree of freedom in design and can produce a highly reliable high quality image. SOLUTION: A heating element board 1 is bonded to a heat sink 4 and then a bonding pad 8 and an electric wiring 5 are connected electrically through a bonding wire 6. The bonding wire 6 has a shape as shown by a dot line at that moment of time. Subsequently, a channel forming member 2 is fixed and the bonding wire 6 is deformed as shown by a solid line by a wire abutting part 3. According to the structure, the space required for electrical connection through the bonding wire 6 can be reduced.

7. 发明专利

JPH10264399A INK-JET PRINT HEAD AND ITS MANUFACTURE 失效
公开(公告)号：JPH10264399A
公开(公告)日：1998-10-06
申请号：JP7780697
申请日：1997-03-28
申请人： FUJI XEROX CO LTD
发明人： OGAWA KATSUHIDE , KOIZUMI YUKIHISA , KATAOKA MASAKI , KOTAKE NAOSHI
IPC分类号： B41J2/05 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To provide an ink-jet print head and its manufacture whereby a passage formation member and a heater chip can be bonded easily with good adhesion. SOLUTION: Passage grooves as individual passages 6 are formed in a passage formation member 1. A side face of a passage groove wall 2 separating the passage grooves is formed with an inclination. Meanwhile, a resin layer 5 is formed on a heater chip 3, and a recessed part 8 is formed in the resin layer 5 between the individual passages 6. In bonding the heater chip 3 and the passage formation member 1, the passage groove wall 2 is dropped and fitted into the recessed part 8 after the heater chip 3 and passage formation member 1 are schematically positioned. At this time, the resin layer 5 constituting the recessed part 8 butts to the inclined side face of the passage groove wall 2, thereby bonding the heater chip and passage formation member. A leading end part of the passage side wall 2 is not required to be in touch with a bottom face of the recessed part 8 and a gap 10 may be provided.

8. 发明专利

JPH10264396A INK-JET RECORDING HEAD AND ITS MANUFACTURE 失效
公开(公告)号：JPH10264396A
公开(公告)日：1998-10-06
申请号：JP7011497
申请日：1997-03-24
申请人： FUJI XEROX CO LTD
发明人： KOTAKE NAOSHI , KOIZUMI YUKIHISA , KATAOKA MASAKI , OGAWA KATSUHIDE
IPC分类号： B41J2/05 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To provide an ink-jet recording head and its manufacture whereby the ink-jet recording head can be assembled simply and accurately without being influenced by accuracy at the time of molding. SOLUTION: A groove part 3 defining an ink passage is formed of a thick resin film layer 2 layered at the side of a substrate 1. A part of a nozzle plate 4 corresponding to the ink passage is made a flat part 6. Since a minute structure is eliminated to mold and process the nozzle plate 4, no consideration into a positional shift consequent to thermal shrinkage is necessary and the nozzle plate can be molded and processed easily. Since no minute groove interfering with laser light is present, nozzle holes 5 of a predetermined shape can be opened with a correct pitch in the nozzle plate 4. In addition, the ink passage and a heat-generating body accompany no shift when the substrate 1 is bonded to the nozzle pate 4. The substrate and the nozzle plate can be bonded simply after the ink passage and the nozzle hole 5 are registered, and therefore assembled easily. The ink-jet recording head having individual ink passage of nearly uniform ink discharge characteristic is obtained in this manner.

9. 发明专利

JPH1076651A INK JET PRINTING HEAD AND ITS MANUFACTURE 失效
公开(公告)号：JPH1076651A
公开(公告)日：1998-03-24
申请号：JP23507996
申请日：1996-09-05
申请人： FUJI XEROX CO LTD
发明人： KATAOKA MASAKI , TAKAGI ATSUSHI , IMOTO TATSUMI , KOIZUMI YUKIHISA , OGAWA KATSUHIDE
IPC分类号： B41J2/05 , B41J2/16
摘要： PROBLEM TO BE SOLVED: To provide an ink jet printing head and its manufacture, of which a sealing process is simplified and, moreover, selectivity for sealants is expanded, and which is small in size and high in quality at lower cost. SOLUTION: A heater chip 1 is bonded onto a heat sink 4 to form an electrical connection 64, and a flow path forming member 2 is junctioned on the heater chip 1. Grooves extending to three ways except the side of a discharge port and communicating to ambient air in the direction of a discharge port and in the direction reverse thereto are formed on a periphery of the junctioned face of the flow path forming member 2 with the heat chip 1. Further, a joint member 3 is mounted on the flow path forming member 2, and a sealant is injected through a first sealer injection hole 31 to be hardened. At that time, the grooves of the flow path forming member 2 and a space between a plate-like portion 30 of the flow path forming member 2 and an end face of the heater chip 1 are filled with the sealer by a capillary force, whereby the heater chip 1 and the flow path forming member 2 are sealed together. Simultaneously, a connection between an ink flow path 32 in the joint member 3 and an ink supply tube 25 in the flow path forming member 2 and the electrical connection 64 are sealed.

10. 发明专利

JPH07323566A INK TANK 失效
公开(公告)号：JPH07323566A
公开(公告)日：1995-12-12
申请号：JP14106994
申请日：1994-05-31
申请人： FUJI XEROX CO LTD
发明人： NANBA YUMIKO , OGAWA KATSUHIDE
IPC分类号： B41J2/175
摘要： PURPOSE:To provide an ink tank using an ink absorbing member excellent in use efficiency, having a sufficient peel strength and a necessary range of density, not generating the deposit of an oil component on its surface at the time of production and capable of dispensing with a washing process. CONSTITUTION:As an ink absorbing member 14 charged in an ink tank 13 supplying ink to an ink jet head, felt containing at least a heat-fusible felt fiber material in a thermally fused state is used.

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