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公开(公告)号：JPH09123500A
公开(公告)日：1997-05-13
申请号：JP27916095
申请日：1995-10-26
Applicant: SHARP KK
Inventor： MATOBA KOJI , HIRATA SUSUMU , ISHII YORISHIGE , ABE SHINGO , ONDA YUTAKA , INUI TETSUYA
IPC: B41J2/335
Abstract: PROBLEM TO BE SOLVED: To attempt the high grade recording action by reducing the thermally mutual interference between heating resistors adjacent to each other and, during the recording action, realize the reduction of consuming electric power and a small-sized and lightweight thermal head. SOLUTION: Both end parts of a buckling heating element 4 as a heating resistor are fixed through insulating members 3 and 3 on a board 2. When the buckling heating element 4 is thermally expanded from its substantially thermal stress-free no displacement state by being heated up to a predetermined temperature or higher necessary for buckling the buckling heating element under the state that the buckling heating element 4 is controlled by being energized with a power source 6 by means of a switch 5, the thermal expansion of the buckling heat element is suppressed due to the fixing of its both end parts, resulting in exceeding the compression force accumulated within it over its buckling load so as to deform it to a heat-sensitive paper 7 side by buckling.
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公开(公告)号：JPH0911458A
公开(公告)日：1997-01-14
申请号：JP16372595
申请日：1995-06-29
Applicant: SHARP KK
Inventor： HIRATA SUSUMU , MATOBA KOJI , INUI TETSUYA , ISHII YORISHIGE , ABE SHINGO , ONDA YUTAKA , KIMURA MASAHARU , HORINAKA MASARU
Abstract: PURPOSE: To impart to an ink jet head excellent response characteristics by heating and cooling and to make it suitable for high-speed printing, by constructing a pressure generating means of a buckled structure body and a heater layer and by providing a Peltier element between a base and the buckled structure body. CONSTITUTION: A heater circuit 3 is formed on the base side of a buckled structure body 1 with a second insulating film 4 interlaid and further a first insulating film 2 is formed between the heater circuit 3 and a base 7 so as to ensure insulation between the heater circuit 3 and the base 7. Besides, a diaphragm 5 is formed on the nozzle plate 10 side of the buckled structure body 1, constructing a pressure generating member. On the surface of a third insulating film 6 located on the base 7, a Peltier element 12 and power sources 13a and 13b for driving the Peltier element are provided at a position opposite to the buckled structure body and on the circumference thereof. Electrodes 14a and 14b are formed at the opposite end parts of the buckled structure body 1 and a voltage can be impressed on the electrode 14a by a power source 16.
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公开(公告)号：JPH08276572A
公开(公告)日：1996-10-22
申请号：JP8242695
申请日：1995-04-07
Applicant: SHARP KK
Inventor： INUI TETSUYA , MATOBA KOJI , HIRATA SUSUMU , ISHII YORISHIGE , ABE SHINGO , KIMURA MASAHARU , HORINAKA MASARU , ONDA YUTAKA
Abstract: PURPOSE: To provide an ink jet printer capable of suppressing the destruction of a heater layer and the emission inferiority of an ink caused by the irregularity of the heater layer and to adjust the ink jet printer. CONSTITUTION: A heater layer 3 is heated to emit an ink. A power supply means 10 supplies power to the heater layer 3 and a resistance measuring device 19 detects the resistance value of the heater layer 3. A discrimination circuit 15 discriminates whether the resistance of the heater layer 3 becomes a predetermined resistance value or more and a control circuit 14 stops the supply of power from the power supply means 10 to the heater layer 3 on the basis of the discrimination signal 15s from the discrimination circuit.
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公开(公告)号：JPH08142323A
公开(公告)日：1996-06-04
申请号：JP29012394
申请日：1994-11-24
Applicant: SHARP KK
Inventor： HIRATA SUSUMU , MATOBA KOJI , INUI TETSUYA , ISHII YORISHIGE , ABE SHINGO , KIMURA MASAHARU , HORINAKA MASARU , ONDA YUTAKA
IPC: B41J2/045 , B41J2/14 , B41J2/16 , B41J29/377
Abstract: PURPOSE: To provide an ink jet head capable of having a good responsiveness against heating or cooling and of printing at high speed. CONSTITUTION: A nozzle plate 10 having a nozzle opening 11 and a substrate 7 form a part of a circumferential wall of an ink chamber 31. A pressure generation member 20 is provided in the ink chamber 31. A pressure generation member 20 comprises a buckling body 1, a heater layer 3 and a diaphragm 5. The buckling body 1 which is roughly in plate-shaped and of which circumferential section is attached to the substrate 7 can take a non-displacement condition substantially having no-thermal stress or a buckling condition wherein it is buckled by the thermal expansion. The heater layer 3 is provided along a face on a side of the substrate 7 of the buckling body 1. The diaphragm 5 is made of a roughly plate-shaped flexible material and is provided along a face on a side of the nozzle plate 10 of the buckling body 1 in such a manner that at least a circumferential section 5c is attached to a circumferential section 1c of the buckling body 1.
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公开(公告)号：JPH08108533A
公开(公告)日：1996-04-30
申请号：JP24295594
申请日：1994-10-06
Applicant: SHARP KK
Inventor： ABE SHINGO , OTA KENJI , INUI TETSUYA , MATOBA KOJI , HIRATA SUSUMU , ISHII YORISHIGE
Abstract: PURPOSE: To obtain a large discharge force with a small size by providing compressing means for applying a compression stress to a buckling structure to buckle the structure, thereby displacing a central part. CONSTITUTION: The ink jet head comprises a nozzle plate 11, a housing 7, buckling structures 1a1 , 1a2 , 1b, and compressing means 13a, 13b, wherein the plate 11 has an orifice 11a. The housing 7 is so mounted at the plate as to have a space communicating with the orifice 11a between the housing 7 and the plate 11. The structures 1a1 , 1a2 , 1b are disposed between the plate 11 and the housing 7, and the structures are supported to the housing 7 so that both the ends and the central part interposed therebetween are displaced. The compressing means (power sources 13a, 13b) applies the stress to the structures 1a1 , 1a2 , 1b, to buckle the structures 1a1 , 1a2 , 1b, thereby displacing the central part.
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Patent Agency Ranking
公开(公告)号：JPH07256880A
公开(公告)日：1995-10-09
申请号：JP5552594
申请日：1994-03-25
Applicant: SHARP KK
Inventor： HIRATA SUSUMU , MATOBA KOJI , ISHII YORISHIGE , INUI TETSUYA , ABE SHINGO , OTA KENJI
Abstract: PURPOSE:To improve the ink discharge speed of an ink jet head using a buckling structure by making a part opposing the orifice of a nozzle of a buckling structure that drives by a temperature change deform locally. CONSTITUTION:When voltage is applied through electrodes 9a, 9b, a buckling structure 3 is heated by resistance heat and will expand. However, since the both ends are fixed, the buckling structure fails to expand and deform, and a compressive force P occurs. If the compressive force P exceeds a buckling load, buckling deformation occurs. At this time, if the cross-sectional area of the part of the buckling structure 3 opposite to the nozzle is smaller than other parts, stress concentration occurs. Therefore, the part opposite to the nozzle deforms toward the side of the nozzle plate 1 in response to the form of the nozzle orifice 2. In consequence, pressure is conveyed to ink filling a space between the buckling structure 3 and the nozzle plate 1, and an ink drop 6 is formed and jets out from the nozzle orifice.
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公开(公告)号：JPH0714483A
公开(公告)日：1995-01-17
申请号：JP15045593
申请日：1993-06-22
Applicant: SHARP KK
Inventor： INUI TETSUYA , MATOBA KOJI , HIRATA SUSUMU , ISHII YORISHIGE , YAMASHITA ZENJIRO , OTA KENJI
Abstract: PURPOSE:To obtain a large contact load by letting a device be made up of the movable substrate of a cantilever, a bi-metal composed of a metallic layer having a coefficient of thermal expansion higher than that of the movable substrate, and of a heating means. CONSTITUTION:The back face side of a cantilever 28 composed of a silicon single crystal substrate 2, is provided with a metallic layer 32 as thin as 10 to 1000mum made of Ni and the like via a conductive film 30 made of Ni, Fe, Cu and the like, and its front surface is provided with a heater circuit 14 via an oxide film 4. The free end of the cantilever 28 is provided with a contact circuit 14 via the oxide film 4, and the surface of its upper portion is provided with a conductive layer 20 as thin as 10 to 1000mum made of Ni, Au, Cr, Ag, Ta and the like at a position faced thereto via a specified space. An opposite contact section 24 as thin as 10 to 1000mum made of Ni, Fe, Cu and the like are provided. When current flows in the heater circuit, the cantilver 28 is displaced upward because of the difference in a coefficient of thermal expansion between the cantilver 28 and the metallic layer 32, the contact circuit 16 is pushed onto the opposite contact section 24, so that electricity is thereby conducted.
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公开(公告)号：JP2002122757A
公开(公告)日：2002-04-26
申请号：JP2000315252
申请日：2000-10-16
Applicant: SHARP KK
Inventor： ISHII YORISHIGE
IPC: G02B6/42
Abstract: PROBLEM TO BE SOLVED: To realize low cost for single-core bidirectional communication by omitting a beam splitter, and to enhance optical coupling efficiency of optical fibers in transmitting and receiving light. SOLUTION: In the single-core bidirectional optical communication, in which a transmitter 30 and a receiver 40 are arranged near each of both ends of a single optical fiber, one of the transmission and reception at one end of the optical fiber 2 is performed via the end face of the optical fiber, while the other is carried out via a notched part 20 that has a reflection area and installed on the peripheral face of the optical fiber.
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公开(公告)号：JP2002048948A
公开(公告)日：2002-02-15
申请号：JP2000237275
申请日：2000-08-04
Applicant: SHARP KK
Inventor： ISHII YORISHIGE , MATSUSHIMA TOSHIYUKI , FUJITA HIDEAKI , IWAI YOSHIFUMI , KURATA YUKIO , TAMURA HISAHIRO
Abstract: PROBLEM TO BE SOLVED: To secure the safety of eyes by preventing laser light from being leaked to the outside of a communication module because there is the danger that when transmission light is irradiated from an LD(laser diode) in a state in which an optical fiber or a connector is slipped off when the LD is used, eyes and the skin of a human beings are injured by the coherent property of the radiant light. SOLUTION: This optical communication module is provided with a radiant member 2 emitting transmission light 1a and a connecting tool for connecting an optical fiber 7 for external transmission attachably and detachably to the radiant member 2 and the connecting tool has a cylinder-shaped containing part which receives the end part of the optical fiber 7 coaxially at the time of connecting the optical fiber 7 and fixes it and, in this module, the radiant member and the connection tool are arranged so that the optical axis of the transmission light from the optical radiant member 2 intersects the optical axis 8 of the optical fiber 7 with a prescribed angle to be made incident on the inside of the optical fiber 7 at the time of connecting the optical fiber 7 and the emitted beam collides with the inner wall of the containing part at the time of attaching and the detaching of the optical fiber 7.
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公开(公告)号：JP2001188149A
公开(公告)日：2001-07-10
申请号：JP37212699
申请日：1999-12-28
Applicant: SHARP KK
Inventor： TAMURA HISAHIRO , FUJITA HIDEAKI , ISHII YORISHIGE , KURATA YUKIO
IPC: G02B6/42 , H04B10/25 , H04B10/2507 , H04B10/2581 , H04B10/14
Abstract: PROBLEM TO BE SOLVED: To provide a simply structured, inexpensive and small-sized bi- directional communicating device realizing all double bi-directional communication with a single optical fiber with reduced light loss both in transmission and reception, and further realizing a high SN and suited for efficiently coupling even with a large-diameter optical fiber such as a POF. SOLUTION: This device performs transmission/reception with a single optical fiber. A light emitting element 6 emitting a transmission beam and a lens 5 converging the beam and making it incident on the optical fiber 2 are arranged in a transmission space 16. A light receiving element 7 receiving a reception beam from the optical fiber 2 is arranged in a reception space 17. A light separation member 8 separates the transmission space 16 and the reception space 16 optically. Further, the light separation member 8 is provided with an opening part passing the transmission beam S from the light emitting element 6 through and passing the transmission beam S1 reflected by the optical fiber 2 through.
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