baber/WOPTO huggingface dataset:
Patent JP-2018526030-A (JP)
Title: 結合していない標的についてのアプタマーの選抜のための方法
IPC: C12N15/115
Filed: 2016-09-02
Abstract: 本発明は、標的またはオリゴヌクレオチドライブラリーの固定化を必要としないアプタマーの選抜のための方法に関する。この方法は、（ｉ）プライマー認識部位に挟まれたランダム領域を含むオリゴヌクレオチドの選抜用ライブラリーを、プライマー認識部位にアニールするブロッカーオリゴヌクレオチドと混合すること；（ｉｉ）ブロック済み選抜用ライブラリーを、ランダムオリゴヌクレオチドを含む固定化フィールドに曝露させること、および結合していない選抜用ライブラリーのオリゴヌクレオチドを除去すること；（ｉｉｉ）固定化フィールドに結合した選抜用ライブラリーのオリゴヌクレオチドを回収すること、および目的の標的アナライトと混合すること；（ｉｖ）選抜用ライブラリーのオリゴヌクレオチドと標的アナライトとの混合物を固定化フィールドに曝露させること；ならびに（ｖ）固定化フィールドに結合しなかった選抜用ライブラリーのオリゴヌクレオチドを回収すること、を含む。 【選択図】なし
Patent JP-2019504207-A (JP)
Title: マグネシウム合金板材、およびその製造方法
IPC: C22C23/02
Filed: 2016-12-23
Abstract: 本発明の一実施形態に係るマグネシウム合金板材の製造方法は、Ａｌ：２．７〜５重量％、Ｚｎ：０．７５〜１重量％、Ｃａ：０．１〜０．７重量％、およびＭｎ：１重量％以下（０重量％を除く）を含有し、残りはＭｇおよび不可避不純物からなる溶湯を鋳造して鋳造材を製造する段階（Ｓ１０）と、鋳造材を均質化熱処理する段階（Ｓ２０）と、均質化処理された鋳造材を温間圧延する段階（Ｓ３０）とを含む。
Patent JP-2019501464-A (JP)
Title: 顧客意思決定ツリー生成システム
IPC: G06Q30/02
Filed: 2016-11-15
Abstract: 顧客意思決定ツリーを生成するシステムは、小売アイテム取引売上データを受け付ける。システムは、売上データをアイテム／店舗／期間レベルに集成し、売上データを属性値／店舗／期間レベルに集成する。システムは、期間の売上シェアを判定し、属性値ペア間の相関関係に基づいて属性値ペアについての類似度を判定する。次に、システムは、判定された類似度に基づいて最上位属性を判定する。
Patent JP-2018534366-A (JP)
Title: 骨格筋の肥大剤としてのフロスタン−３オール誘導体
IPC: C07J71/00
Filed: 2016-10-28
Abstract: 式Ｉで表される化合物を開示する。この化合物は、骨格筋の肥大を促進するか、又は骨格筋の萎縮を治療するために有用である。
Patent JP-2019507278-A (JP)
Title: 乗物に搭載された燃料の調整
IPC: F02M31/16
Filed: 2017-01-17
Abstract: 燃料分離システムは、燃料流を受け取り、燃料流の揮発性に基づいて、燃料流を、第１の自己点火特性値によって規定された蒸気流と、第１の自己点火特性値より大きい第２の自己点火特性値によって規定された第１の液体流と、に分離するように構成された燃料分離器と、燃料分離器に通信可能に結合されると共にエンジン運転条件を含む入力をエンジンから受信するように操作可能な制御システムであって、少なくとも部分的にはエンジン運転条件に基づいて、第１の自己点火特性値及び第２の自己点火特性値の少なくとも一方を変えるために、燃料分離器の運転パラメータを調整するように構成された制御システムとを含む。
Patent JP-2019507793-A (JP)
Title: ブルトン型チロシンキナーゼを調節する化合物及び方法
IPC: A61P27/06
Filed: 2017-03-10
Abstract: 本明細書で提供されるのは、特に、ブルトン型チロシンキナーゼを調節する化合物及び方法である。
Patent JP-2019513176-A (JP)
Title: 潤滑油供給原料の分留のための方法
IPC: C10G7/00
Filed: 2017-03-08
Abstract: 潤滑油供給原料の分留のためのシステムおよび方法が提供される。潤滑油供給原料は、減少された圧力および減少されたか又は最小化された水蒸気分圧を有する減圧蒸留塔に導入されることが可能である。潤滑油供給原料は、複数の潤滑油沸点範囲生成物に分離されることが可能である。これにより、潤滑油供給原料から分離された１種または複数種の生成物の沸点範囲における重複を減少させるか、または最小化させることが可能となる。
Patent JP-2019514225-A (JP)
Title: 通気口
IPC: H05K5/03
Filed: 2017-04-07
Abstract: 通気口は、好ましくは金属でできており、流体の通路のための開口（２４）および開口の周囲のシーリング表面（１１）を有する本体（１０）を含む。多孔質膜（５０）は、シーリング表面（１１）に対して横たわっており、および開口（２４）を覆う。クランプ配置は、例えば、通気口の本体（１０）取り付けられたキャップ（４０）によって、シーリング表面（１１）に対して膜を押し付けて、液体がシーリング表面（１１）と膜（５０）との間を通過することを防ぐ、ばね（３０）を含むことができる。クランプ配置は、クランプ範囲において５０％の膜厚の減少により、単位面積当たりの圧縮力が５０％超変化しないようになっている。
Patent JP-2019522832-A (JP)
Title: 拡張現実システムを用いた電磁追跡
IPC: G06F3/01
Filed: 2017-04-24
Abstract: 頭部搭載型拡張現実（ＡＲ）デバイスは、装着者の頭部の姿勢を追跡し、装着者の環境内のオブジェクトの３次元仮想表現を提供することができる。電磁（ＥＭ）追跡システムは、頭部または身体姿勢を追跡することができる。ハンドヘルドユーザ入力デバイスは、ＥＭ場を生成するＥＭエミッタを含むことができ、頭部搭載型ＡＲデバイスは、ＥＭ場を感知するＥＭセンサを含むことができる。センサからのＥＭ情報は、分析され、センサの場所および／または配向、それによって、装着者の姿勢を決定することができる。ＥＭエミッタおよびセンサは、時分割多重化（ＴＤＭ）または動的周波数調整を利用し、複数の周波数で動作してもよい。
Patent JP-2019522912-A (JP)
Title: 情報伝送方法及び装置
IPC: H04W76/10
Filed: 2016-06-24
Abstract: 本発明の実施例は情報伝送方法及び装置を提供する。該方法は、第一の装置が第二の装置から送信された、該第二の装置が必要とする第一のシステム情報を示すための第一の指示情報を取得することと、該第一の装置が該第一の指示情報に基づき、該第一のシステム情報を送信することとを含む。本出願の実施例は送信効率を向上させ、シグナリングオーバーヘッドを削減し、リソース浪費を回避することができる。
Patent JP-2019516702-A (JP)
Title: メチル第三級ブチルエーテルの製造方法
IPC: C07C43/04
Filed: 2018-01-04
Abstract: 本発明は、酸触媒下でメタノールとイソブテンを反応させてメチル第三級ブチルエーテルを生成する反応ステップ；及び前記反応ステップから収得した反応生成物を、酸触媒が含まれた充填（ｐａｃｋｉｎｇ）段を含む反応蒸留塔に流入させて精製するステップ；を含み、反応器の体積別にリサイクルとフレッシュフィードの流量比（ｒｅｃｙｃｌｅ／ｆｒｅｓｈ ｆｅｅｄ）を異ならせて、未反応のイソブテンの量及び反応器内に含まれた不純物の量を減少させることによって、反応蒸留塔での熱エネルギー使用量を低減できる効果があるメチル第三級ブチルエーテルの製造方法に関する。
Patent JP-2020504074-A (JP)
Title: クマリン化合物および蛍光標識としてのそれらの使用
IPC: C07D491/052
Filed: 2017-12-15
Abstract: 本出願は、新規クマリン化合物および蛍光標識としてのそれらの使用に関する。化合物は、核酸配列決定用途におけるヌクレオチドの蛍光標識として使用され得る。
Patent JP-2019088018-A (JP)
Title: Transmission method
Inventor: KAMIO HIROYUKI
IPC: H04H60/37
Filed: 2019-01-17
Abstract: To enhance flexibility and transmission efficiency by expanding operation of logo data when achieving ultrahigh definition of an image.SOLUTION: In a transmission system, logo data is modularized by log identification and a logo type. The modularized logo data is distributed to a plurality of sections in common data table information. With respect to logo data, logo data distribution information indicating a correspondence relation between the logo type and the sections to which the logo data is distributed is defined and the defined logo data distribution information is inserted into a logo data distribution descriptor in the common data table information. Also, logo transmission description information is generated from logo management information including the logo identification and the logo type of the logo data and inserted into a logo data transmission descriptor in service description table information. Then, the common data table information and the service description table information are combined with a broadcast signal, and the combined broadcast signal is transmitted.SELECTED DRAWING: Figure 16
Patent JP-2020116483-A (JP)
Title: Air piping unit, membrane filtration apparatus and water treatment apparatus
Inventor: NISHIDA TAKASHI
IPC: B01D65/02
Filed: 2019-01-18
Abstract: To provide an air piping unit in which a failure frequency of a pressure regulator is significantly low when the regulator is used for a membrane filtration apparatus including an ultrafiltration membrane or a microfiltration membrane.SOLUTION: Provided are: an air piping unit that is used for a membrane filtration apparatus including an ultrafiltration membrane or a microfiltration membrane, which has a high pressure-side pressure regulator 1 and a low pressure-side pressure regulator 2 arranged in parallel, and can supply compressed air 3 through branched primary piping 14 to the high pressure-side pressure regulator 1 and the low pressure-side pressure regulator 2, and supplies low-pressure air 5 through secondary piping 15 from the low pressure-side pressure regulator 2 to a membrane module; a membrane filtration apparatus; and a water treatment apparatus.SELECTED DRAWING: Figure 1
Patent JP-2019171017-A (JP)
Title: Autonomous mobile cleaner, cleaning method using the same and program for the same
Inventor: TAKAOKA YUKI
IPC: A47L9/28
Filed: 2019-01-18
Abstract: To provide an autonomous mobile cleaner capable of automatically generating a movement mode which considers an order of cleaning of an object which became in a movement impossible state and cleaning of other parts.SOLUTION: An autonomous mobile cleaner comprises: a drive part 30 for driving movement of a cleaner body 20; a control part 70 arranged on the cleaner body; a camera 92 for acquiring a camera image in a front direction of the cleaner body; an obstacle detection sensor 71 for detecting an object; and a rotation number sensor 455 for detecting the movement impossible state. The control circuit is configured to (a) identify information of an object which became in the movement impossible state, (b) receive information of whether or not to set the object to a cleaning object, (c) receive information indicating that the object is set to the cleaning object, and the control circuit controls the drive part and suction part so as to clean in a first movement mode for cleaning a space except for the object, and then getting over the object in cleaning reservation, and clean in a second movement mode for getting over the object first, and then cleaning the space except for the object in the cleaning start time.SELECTED DRAWING: Figure 16D
Patent JP-2020116757-A (JP)
Title: Wiping device, head maintenance device and device for discharging liquid
Inventor: HASEBE DAISUKE
IPC: B41J2/165
Filed: 2019-01-21
Abstract: To maintain wiping performance of a blade-like wiping member.SOLUTION: A wiping device includes: a blade-like wiper 24 for wiping a nozzle face 111a of a liquid discharge head 111; a web 4 unwound from an unwound-side roll 4A and wound by a winding-side roll 4B to wipe the nozzle face 111a; and cleaning fluid imparting means for imparting cleaning fluid 302 to the wiper 24. The wiping device performs cleaning by bringing the wiper 24 into contact with the web 4 while imparting the cleaning fluid 302 to the wiper 24 from the cleaning fluid imparting means.SELECTED DRAWING: Figure 10
Patent JP-2020117025-A (JP)
Title: Driving assist device
Inventor: WASHINO SHIGERU
IPC: B62D6/00
Filed: 2019-01-22
Abstract: To achieve high accuracy of hands-off determination by appropriately detecting driver torque during execution of steering support control.SOLUTION: A drive assist ECU 10 includes a hands-off determination section 106. The hands-off determination section 106 calculates a steering wheel steering angle θh with a hands-off state assumed on the basis of an upstream-side friction value FrU of a torsion bar 61 and a torsional stiffness value Ktb of the torsion bar 61 (S11-S15). The hands-off determination section 106 calculates a driver torque Tx by correcting an input torque Ti detected by a torque sensor 60, using a value obtained by multiplying a difference value between the steering wheel steering angle θh and an assist part steering angle θa by a torsional stiffness value Ktb (Tx=Ti-Ktb*(θh-θa)).SELECTED DRAWING: Figure 6
Patent JP-2020115772-A (JP)
Title: Seedling transplanter
Inventor: HAYASHI YASUHIRO
IPC: A01C11/02
Filed: 2019-01-22
Abstract: To provide a seedling transplanter capable of easily supplying a seedling tray to a preliminary seedling frame.SOLUTION: A seedling transplanter comprises: a travel vehicle body; a seedling tray transport part; a seedling planting part; a seedling tray collection part; a preliminary seedling frame; a suspension mechanism; and a lifting device. The travel vehicle body is supported to a frame comprising wheels. The seedling tray transport part is provided on a rear part of the travel vehicle body and transports a seedling tray storing a pot seedling. The seedling planting part is provided in a halfway of the seedling tray transport part and plants the pot seedling taken out from the seedling tray to a farm field. The seedling tray collection part is provided proximate to a termination part of the seedling tray transport part, and collects a seedling tray from which the pot seedling is taken out and which is empty. The preliminary seedling frame is attached to the frame and mounts thereon a preliminary seedling tray storing the pot seedling. The suspension mechanism is provided between the wheel and the frame. The lifting device is provided above or below the suspension mechanism, lifts up the frame for changing a height of the travel vehicle body.SELECTED DRAWING: Figure 3
Patent JP-2020090647-A (JP)
Title: Polycarbonate resin composition pellet and molded article of the same
Inventor: HAYAKAWA JUNYA
IPC: C08L63/00
Filed: 2019-01-25
Abstract: To provide a polycarbonate resin composition pellet suitable as a molding material of a light guide member and excellent in a hue, and a molded article obtained by molding the polycarbonate resin composition pellet.SOLUTION: The polycarbonate resin composition pellet comprises a polycarbonate resin (A), an aromatic alcohol (B) represented by general formula (1), and a phosphorus-based stabilizer (C), in which the content of the aromatic alcohol (B) in the pellet is 0.001 to 1 mass% and the content of the phosphorus-based stabilizer (C) is 0.003 to 0.5 mass%. In general formula (1), X represents an alkyl group or an aryl group optionally having a substituent; n represents an integer of 0 to 4 and when n is 2 or more, n of X may be the sane or different; and k is 1 or 2.SELECTED DRAWING: None
Patent JP-2020120056-A (JP)
Title: Semiconductor device
Inventor: YOSHIOKA TOSHIFUMI
IPC: G01N21/17
Filed: 2019-01-28
Abstract: To provide a semiconductor device, detecting or oscillating a predetermined electromagnetic wave, capable of suppressing generation of an unnecessary electromagnetic wave.SOLUTION: A semiconductor device (a detector 100) includes an element substrate 101 having a plurality of semiconductor elements 151 detecting or oscillating a terahertz wave and a mesh-like electromagnetic shield 104 arranged ahead of a surface 105 detecting or oscillating a terahertz wave in the element substrate 101 and constituted of conductive material. A width of a line of the electromagnetic shield 104 is at most a wavelength of a terahertz wave.SELECTED DRAWING: Figure 1
Patent JP-2020117187-A (JP)
Title: Vehicle control device
Inventor: SONE ATSUSHI
IPC: B62D6/00
Filed: 2019-01-28
Abstract: To provide a vehicle control device capable of restricting an estimation error of an actual steering angle.SOLUTION: A vehicle control device includes: a steering angle control part which implements steering angle control so that an actual steering angle follows an instructed target steering angle; and a steering angle correction part which is constructed so that the target steering angle is transferred to the steering angle control part after applying a corrected steering angle command value, that has been corrected to exceed the target steering angle, to the steering angle control part only for a prescribed period, during stationary steering. During stationary steering, the corrected steering angle command value that has been corrected to be larger than the target steering angle can be temporarily generated. Accordingly, the actual steering angle can be prevented from becoming smaller than the target steering angle due to road surface reaction force during stationary steering. As a result thereof, an estimation error of the actual steering angle can be suppressed.SELECTED DRAWING: Figure 2
Patent JP-2020122879-A (JP)
Title: Program, image forming apparatus, and image forming system
Inventor: KUME KATSUNORI
IPC: G06F3/12
Filed: 2019-01-30
Abstract: To allow a user to recognize information on a removable unit without a burden on the user.SOLUTION: A program according to one aspect of the disclosed technology causes an information terminal to function as an information image reading section that reads an information image including information on a removable unit, a unit information acquisition section that acquires the information on the removable unit based on the information image, and a unit information display section that displays the information on the removable unit.SELECTED DRAWING: Figure 1
Patent JP-2020121519-A (JP)
Title: tank
Inventor: YAMORI TAKEHIRO
IPC: B41J2/175
Filed: 2019-01-31
Abstract: To provide a tank that can reduce poor ink discharge in an inkjet head caused by mixing of air bubbles due to spattering of liquid flowing therein.SOLUTION: A tank 21 comprises an ink storage part 51 that stores ink, an inflow port 53a through which ink is flown into the ink storage part, and an outflow port 59a through which ink is flown out. The ink storage part 51 has a recessed part 51c which is formed on a bottom surface 51b of the ink storage part 51 and to which the inflow port 53a is opened. In the bottom surface of the ink storage part 51 is formed with an inclined part 51e that gradually becomes higher from the inflow port side toward the outflow port side. An inclination angle θ of the inclined part is set to an angle at which ink can flow sufficiently even in an upper left area in the ink storage part 51 and therefore the ink does not stay there.SELECTED DRAWING: Figure 4
Patent JP-2020126201-A (JP)
Title: Display and display method
Inventor: HAYASHI HIROYOSHI
IPC: G09G3/34
Filed: 2019-02-06
Abstract: To provide a display and a display method that can improve display quality.SOLUTION: A display in one embodiment comprises: a display panel; a light source; and a controller. The controller controls a voltage between a common electrode and a pixel electrode in a plurality of first periods included in one frame period, and controls operation of a light source in a plurality of second periods included in the one frame period. In an initial first period of the plurality of first periods included in the one frame period, the controller controls the voltage between the common electrode and the pixel electrode, so as to write a video component with the same color as that of a video component written by applying a voltage between the common electrode and the pixel electrode in the last first period of a plurality of first periods included in the immediately previous one frame period, continuously from the immediately previous one frame period.SELECTED DRAWING: Figure 5
Patent JP-2019160300-A (JP)
Title: System for visualizing and recommending media content based on sequential context, method and program
Inventor: ZHAO JIAN
IPC: G06F16/438
Filed: 2019-02-08
Abstract: To achieve visualization of a media content to be recommended based on a sequential context.SOLUTION: The method comprises: identifying at least one media content which is associated with a received content feature being associated with a viewed media content; selecting at least one additional media content which is linked to the viewed media content by order relation; generating a two-dimensional visualization expression on the basis of content similarity and order relation among the at least one media content identified, viewed media content, and at least one selected additional media content; and displaying the generated two-dimensional visualization expression.SELECTED DRAWING: Figure 1
Patent JP-2020129086-A (JP)
Title: Image forming device
Inventor: TERAMOTO HIRONOBU
IPC: G03G21/16
Filed: 2019-02-12
Abstract: To reduce the number of terminals used for a connector to connect an image forming device and a fuser and thereby reduce costs, and to suppress the possibility of unused terminals being left.SOLUTION: A control unit 104 on the body side of an image forming device 100 is electrically connected to a nonvolatile memory 102 of a fuser 16 via a connector 113, and acquires information relating to the resistance value of a heater 201 of the fuser 16 via the connector 113 which is stored in the nonvolatile memory 102 and controls the heater 201 on the basis of the acquired information. Out of a plurality of terminals of the connector 113, a first terminal connected to the nonvolatile memory 102 and a second terminal connected to the nonvolatile memory 102 are arranged separately at both ends of the connector. The control unit 104 is constituted so that, as the connection state of the connector 113 is detected on the basis of a signal value inputted via the first terminal and thereby, a communication line of the nonvolatile memory 102 doubles as a connector coming-off detecting function.SELECTED DRAWING: Figure 3
Patent JP-2020134389-A (JP)
Title: Location management system
Inventor: YONEZAWA HAYATE
IPC: G06Q10/06
Filed: 2019-02-22
Abstract: To manage location information on all dollies in a management server.SOLUTION: A location management 1 of the present invention is the location management system that comprises: a towing tractor 2; a plurality of dollies 3 to be transported by the towing tractor 2; and a management server 10. The plurality of dollies 3 include: one dolly 3A in which a master machine 20 having a GPS detecting location information indicative of a current location installed; and five dollies 3a that has a slave machine 30 transmitting identification information on the dolly 3 to the master machine 20. The master machine 20 is configured to transmit the location information detected by the GPS and the identification information on the plurality of dollies 3 to the management server 10.SELECTED DRAWING: Figure 1
Patent JP-2019183120-A (JP)
Title: Classification method of polymer particle
Inventor: TAKAHASHI TOMOYUKI
IPC: B03B5/28
Filed: 2019-02-26
Abstract: To provide a classification method of a polymer particle capable of removing a coarse particle from a polymer particle at good efficiency and good accuracy.SOLUTION: A coarse particle is removed from a polymer particle by using a disk type centrifugal separator for a dispersion containing a polymer particle having volume average particle diameter of 1 μm or less, and polydispersity (volume average particle diameter/number average particle diameter) of 1.30 or less under a condition with factor K in the following formula (1) of 1500 or more. Factor K={Σ×(r)×|d-d|}/{T×(W)×μ} (1), Σ=E×N×R, in which Σ is separation sedimentation distance coefficient, r is radius of volume average particle diameter of particles, |d-d| is absolute value of specific gravity difference of a solid solution article (dis specific gravity of the polymer particle, dis specific gravity of a dispersion medium, d-d≠0, T is a raw material feed amount, W is a solid component of the polymer particle in the dispersion, μ is viscosity of the dispersion medium, E is centrifugal force, R is disk diameter and N is disk number.SELECTED DRAWING: Figure 1
Patent JP-2019146967-A (JP)
Title: Ultrasound head combining ultrasound and optics
Inventor: GEORGE THEMELIS
IPC: A61B1/00
Filed: 2019-02-26
Abstract: To provide an ultrasound head (2), a medical observation device (1), and a method for observing live biological tissue (4).SOLUTION: To provide a surgeon with means of quickly gaining information on a sub-surface structure in a surgical area during an operation, the method comprises the steps of contacting tissue (4) with an ultrasound head (2) and recording ultrasound data (36) and optical image data (34) through the ultrasound head (2). The ultrasound head (2) comprises a sensor side (6) for contacting the tissue (4), and an ultrasound receiver (10). The sensor side (6) is at least in part optically transparent so that light may enter the ultrasound head (2).SELECTED DRAWING: Figure 1
Patent JP-2020140274-A (JP)
Title: Information processing device, server, information processing system, information processing method, and information processing program
Inventor: IKEZAWA Rumi
IPC: G06Q30/06
Filed: 2019-02-27
Abstract: To provide an information processing device, a server, an information processing system, a method, and a program that reduce the number of times of automatic charge when the total amount of products is larger than the balance of electronic money.SOLUTION: A cart-register device acquires recording medium identification information on a recording medium, cart-register identification information, and product identification information on a product, and transmits them to a server. The server stores the received recording medium identification information and cart-register identification information in association with each other. The server stores the recording medium identification information and a balance in association with each other. When the total amount of products whose product identification information was acquired is larger than a first balance corresponding to the recording medium identification information, a charge amount is determined according to difference between the total amount and the first balance. The cart-register device causes a display unit to display the determined charge amount.SELECTED DRAWING: Figure 1
Patent JP-2020139997-A (JP)
Title: Blade driving device and imaging apparatus including the same
Inventor: SUZUKI YUSUKE
IPC: G02B7/02
Filed: 2019-02-27
Abstract: To provide a blade driving device capable of achieving a normally open state with a simple structure without deteriorating the performance of a blade.SOLUTION: A blade driving device 1 includes: a front blade cam member 61 which is rotatable around a cam shaft 13; a front blade cam spring 63 which energizes the front blade cam member 61 in a cam energization direction; a rear blade cam member 62 which is rotatable around the cam shaft 13; a rear blade cam spring 64 which energizes the rear blade cam member 62 in the cam energization direction; and lock member 70 which is movable between an unlock position which allows rotation of the rear blade cam member 62 and a lock position which is engaged with the rear blade cam member 62 and regulates the rotation of the rear blade cam member 62 in the cam energization direction. The front blade cam member 61 has an operation section 612 to which external force is applied and a front blade lever abutting section 617 which abuts on a front blade driving lever 51 by rotation. The rear blade cam member 62 has an engaging section 626 which can be engaged with the front blade cam member 61 and a rear blade lever abutting section 625 which abuts on the rear blade driving lever 52 by rotation.SELECTED DRAWING: Figure 8