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31. 发明专利

JPH0831029A OPTICAL INFORMATION RECORDING MEDIUM, ITS PRODUCTION AND DEVICE THEREFOR 失效
公开(公告)号：JPH0831029A
公开(公告)日：1996-02-02
申请号：JP18309694
申请日：1994-07-13
申请人： CANON KK
发明人： TAKADA KUNIO , MIYAKOSHI TOSHIMORI , SUZUKI NOBUMASA
IPC分类号： G11B11/10 , G11B11/105
摘要： PURPOSE:To obtain an optical information recording medium with protective layers having high adhesion and also having a high refractive index by a hydrogen releasing effect while ensuring satisfactory releasability of impurities on the surface of the substrate at a high rate of deposition without increasing the temp. of the substrate during deposition. CONSTITUTION:This optical information recording medium has at least protective layers 32 and a recording layer 33 on the substrate 31. The protective layers 32 are formed by light-assisted plasma CVD using microwaves or high frequency as a plasma generating means. The protective layers 32 are essentially dielectric layers and the recording layer 33 is a magnetic layer.

32. 发明专利

JPH06234135A METHOD AND DEVICE FOR INJECTION MOLDING 失效
公开(公告)号：JPH06234135A
公开(公告)日：1994-08-23
申请号：JP2266893
申请日：1993-02-10
申请人： CANON KK
发明人： TAKADA KUNIO
IPC分类号： B29C45/20 , B29L11/00
摘要： PURPOSE:To provide an injection molding method and an injection molding device for molding uniform resin molded products with small birefringence continuously. CONSTITUTION:In an injection molding device comprising a first mold 103 with a sprue bush 111 and a second mold 106 disposed facing the first mold and forming a cavity together with the first mold and manufacturing a resin molded product by bringing a nozzle 112 of an injection molding machine 118 into contact with the sprue bush and injecting molten resin 113 into the cavity, means 120 and 121 for pressurizing the resin in the nozzle from the end of the nozzle toward the cylinder side of the injection molding machine are provided. The leakage of resin out of the nozzle, therefore, can be prevented while retaining the temperature of the nozzle end high.

33. 发明专利

JPH06166060A MOLD FOR OPTICAL DISC 失效
公开(公告)号：JPH06166060A
公开(公告)日：1994-06-14
申请号：JP31895692
申请日：1992-11-27
申请人： CANON KK
发明人： TAKADA KUNIO , OKUDA KOSHO
IPC分类号： B29C33/30 , B29C45/26 , B29L17/00 , G11B7/26
摘要： PURPOSE:To exchange a stamper by a method wherein the press members of the outer periphery of the stamper are moved radially at the removal of the stamper. CONSTITUTION:The mold concerned is so constituted as to be made into an integral body by moving a movable mold 5 toward a fixed mold 15 and clamping them together. On the upper fixed mold side of the movable mold 5, an inverted circular truncated cone-shaped movable mirror 4, on which a stamper 1 is placed, is formed. By means of a hole bored at the center of the movable mirror 4, the inner peripheral part of the stamper 1 is pushed against the surface of the movable mirror 4 with a stamper inner periphery presser foot 3. On the surface of the movable mold 5 at the outer peripheral part of the movable mirror 4, a stamper outer periphery presser foot 2 as the stamper keep member for holding down the outer peripheral part of the stamper 1 is provided so as to be divided into four keep pieces, each of which is mounted movably to the radial direction of the stamper 1.

34. 发明专利

JPH0319152A MANUFACTURE OF OPTICAL DISK SUBSTRATE AND OPTICAL DISK SUBSTRATE 失效
公开(公告)号：JPH0319152A
公开(公告)日：1991-01-28
申请号：JP15214989
申请日：1989-06-16
申请人： CANON KK
发明人： TAKADA KUNIO , OKUDA KOSHO
IPC分类号： G11B7/26 , B29D17/00 , G11B7/24 , G11B7/253
摘要： PURPOSE:To make a substrate flat with respect to a secular change and a thermal change by previously correcting the secular change of the form of the plastic substrate and a change quantity owing to thermal stress, film stress and the like at the time of forming a film on the substrate. CONSTITUTION:The secular change of the form of the plastic substrate 1 and the change quantity owing to thermal stress, film stress and the like at the time of forming the film on the substrate 1 are inserted into a metallic mold provided with mirror finished surface plates 4 and 6 having curvature radii which are previously corrected, and polycarbonate resin is used as costable resin, for example, whereby the substrate 1 is formed. Thus, the form of the substrate becomes flat by the secular change of the substrate and the change owing to thermal stress, film stress and the like at the time of forming the film on the substrate 1. Thus, the substrate 1 which causes no warpage and waving of face and mechanical characteristic of is extremely stable can be obtained.

35. 发明专利

JPH01320653A OPTICAL DISK SUBSTRATE AND ITS PRODUCTION 失效
公开(公告)号：JPH01320653A
公开(公告)日：1989-12-26
申请号：JP15216288
申请日：1988-06-22
申请人： CANON KK
发明人： TAKADA KUNIO
IPC分类号： B29D17/00 , G11B7/24 , G11B7/26
摘要： PURPOSE:To correspond a molding and production conditions and to more surely administer production by inscribing the intrinsic serial number inscribed by the depth of desired holes or the direction of an arrow to the substrate. CONSTITUTION:The serial numbers intrinsic to the respective moldings are inscribed on the specular surface opposite to an information signal 3 surface at the time of forming the substrate 1 by using a forming mold. The inscribing is made intrinsic by inscribing recesses 2 on the substrate 1 and changing the depth thereof or by inscribing an arrow shape 14 indicating numbers and making the numbers intrinsic by the direction of the arrow. The production conditions are corresponded to each one of the moldings by inscribing the serial number in such a manner, by which the surer administration of the production is executed.

36. 发明专利

JP2003157759A MANUFACTURING METHOD OF ELECTRON EMITTING ELEMENT SUBSTRATE AND ELECTRON EMITTING ELEMENT 审中-公开
公开(公告)号：JP2003157759A
公开(公告)日：2003-05-30
申请号：JP2001353138
申请日：2001-11-19
申请人： CANON KK
发明人： TAKADA KUNIO
IPC分类号： H01J9/02 , H01J29/04
摘要： PROBLEM TO BE SOLVED: To prevent diffusion of silver (Ag) in an electrons source substrate. SOLUTION: In the manufacture of a matrix substrate, the element electrode is separated from the wiring beforehand, and after wiring formation is completed, the element electrode and the wiring are jointed. Thereby, diffusion of silver (Ag) due to the firing temperature is prevented.

37. 发明专利

JP2000089232A LIQUID CRYSTAL DISPLAY ELEMENT AND ITS PRODUCTION 失效
公开(公告)号：JP2000089232A
公开(公告)日：2000-03-31
申请号：JP27642598
申请日：1998-09-14
申请人： CANON KK
发明人： TAKADA KUNIO
IPC分类号： G09F9/30 , G02F1/1337 , G02F1/1339 , G02F1/136 , G02F1/1368
摘要： PROBLEM TO BE SOLVED: To provide a liquid crystal display element having excellent impact resistant to substantially prevent the occurrence of a sanded defect against the impact received from outside by specifying the coefficient of expansion expressed by a specific equation to a specific value or below. SOLUTION: A cell is formed by forming a sealing material on the periphery of at least either of a substrate formed with electrodes on color filters and a substrate facing the substrate and bonding these substrates to each other by gap forming materials and adhesive beads. After the cell is subjected to a degassing treatment by heating and vacuum evacuation in a vacuum chamber, a chiral smectic liquid material is applied on the injection port of the cell and thereafter the atm. is restored and the cell is successively pressurized, by which the liquid crystals are filled into the cell and the liquid crystal display element 13 is formed. The coefficient E of expansion exprssed by the coefficient E=(B-A')÷A×100 is

38. 发明专利

JPH09223338A OPTICAL RECORDING MEDIUM AND ITS PRODUCTION 失效
公开(公告)号：JPH09223338A
公开(公告)日：1997-08-26
申请号：JP3084996
申请日：1996-02-19
申请人： CANON KK
发明人： TAKADA KUNIO , KOGANEI AKIO , MOTOMIYA KAZUOKI
IPC分类号： C23C16/50 , C23C16/511 , G11B7/26
摘要： PROBLEM TO BE SOLVED: To improve the film forming speed by previously correcting the groove shape of a disk substrate before the formation of a protective layer by a plasma CVD method and using a plasma DVD apparatus of a specified constitution. SOLUTION: Grooves 3 for guiding tracking and fine patterns for bit signals are inscribed on a disk substrate 1 consisting of polycarbonate, etc. A protective layer 4 and further, a recording layer are laminated and formed thereon by the plasma CVD method to constitute the optical information recording medium. The plasma CVD apparatus consists of a plasma generating chamber and a film forming chamber communicated with and isolated from this chamber and deposits thin films on the surface of the disk substrate 1 arranged in the film forming chamber by dissociating gaseous raw materials, such as SiH4 . The shape of the grooves 3 of the disk substrate 1 before formation of the protective layer film is previously subjected to the shape correction to a desired shape 2, and set the shape after the formation of the protective layer film so as to attain a prescribed groove shape 5.

39. 发明专利

JPH08164550A PRODUCTION OF OPTICAL DISK SUBSTRATE 失效
公开(公告)号：JPH08164550A
公开(公告)日：1996-06-25
申请号：JP15928295
申请日：1995-06-26
申请人： CANON KK
发明人： TAKADA KUNIO
IPC分类号： B29C45/64 , B29C45/26 , B29C45/56 , B29C45/70 , B29C45/76 , B29L17/00
摘要： PURPOSE: To relax the impact force generated when a resin flowing in at a high speed impinges against a mold violently while extremely reducing the double refraction or deformation in a substrate in the production of an optical disk substrate. CONSTITUTION: A stamper is set to the cavity formed by movable and fixed molds to which mold clamping force is applied and a resin material is charged in the cavity to be molded to produce an optical disk substrate to which the surface data of the stamper is transferred. In this method, the mold clamping force applied to the movable and fixed molds is set to the value expanding the cavity by the injection pressure of the resin during the filling of the cavity with the resin and, thereafter, mold clamping force is controlled so as to be reduced to cool and solidify the resin.

40. 发明专利

JPH058264A METHOD OF INJECTION-FORMING MOLDED ARTICLE HAVING FINE PATTERN IN ITS SURFACE AND HAVING OPENING IN ITS CENTER AND INJECTION-FORMING APPARATUS THEREFOR 失效
公开(公告)号：JPH058264A
公开(公告)日：1993-01-19
申请号：JP23821591
申请日：1991-09-18
申请人： CANON KK
发明人： TAKADA KUNIO
IPC分类号： B29C33/44 , B29C45/38 , B29C45/40 , B29C45/43 , B29L17/00 , G11B7/26
摘要： PURPOSE:To obtain a molded article having fine patterns on its surface and having a central bore by driving the second-stage stroke of a gate cutter and a sticking out ring substantially simultaneously at the commencement of mold opening in the direction of a molded article separated from a stamper. CONSTITUTION:When a movable side mold 190 is withdrawn for effecting mold opening, pressurized fluid is supplied from a guide bore 21a so as to apply the second driving pressure P2 to a gate cutter 9. By this way, the gate cutter is associated with mold opening and urged to further advance than the stroke advanced by the first driving pressure P1, and then comes into contact with a sticking out ring 11 for sticking out a molded article 1 in order to advance the ring 11. Namely, the second-stage stroke of the gate cutter 9 and movement of sticking out ring 11 is conducted thereby. As a result, the molded article 1 is pushed out by the sticking out ring 11, and thus starts mold releasing from a stamper 3, at the same time, the sprumer is also stuck out by the gate cutter.

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