baber/WOPTO huggingface dataset:
Patent JP-2023531333-A (JP)
Title: 表示基板及びその製造方法、表示装置
IPC: H10K50/88
Filed: 2020-04-21
Abstract: 表示基板及びその製造方法、表示装置であって、表示基板は表示領域（１００）と、表示領域（１００）の片側に位置するボンディング領域（２００）とを備える。表示領域（１００）は駆動構造層と、駆動構造層に設置される有機絶縁層（１５）と、有機絶縁層（１５）に設置される発光素子とを備える。駆動構造層は画素駆動回路を備え、発光素子は画素駆動回路に接続される。ボンディング領域（２００）はボンディング構造層と、ボンディング構造層に設置される有機絶縁層（１５）及びアイソレーションダム（４１０、４２０）と、有機絶縁層（１５）及びアイソレーションダム（４１０、４２０）に設置される無機パッケージ層（２５、２７）とを備える。ボンディング構造層は画素駆動回路に接続される電源コード（２１０、２２０）を備える。ボンディング領域（２００）の有機絶縁層（１５）に少なくとも１つのアイソレーション溝（５００）が設置され、無機パッケージ層（２５、２７）はアイソレーション溝（５００）を被覆し、アイソレーションダム（４１０、４２０）を包む。アイソレーション溝（５００）と表示領域の縁部（１１０）との距離は、アイソレーションダム（４１０、４２０）と表示領域の縁部（１１０）との距離より小さい。
Patent JP-2022532113-A (JP)
Title: 偏光回転子
IPC: G02B26/00
Filed: 2020-05-07
Abstract: 本発明は、入力端部及び出力端部を持つ少なくとも第１導波路を含む第１導波路層と、入力端部及び出力端部を持つ少なくとも第２導波路を有する第２導波路層と、並びに第1導波路の出力端部と第２導波路の入力端部との間で光結合を生ずるため、少なくとも一方の導波路の端部に配置される少なくとも１つの第１垂直ミラー素子と、を備える偏光回転子に関する。端部に垂直ミラー素子を有する第１又は第２の導波路の光軸が導波路層で第１角度の回転をされ、これにより第１角度に対応する偏光回転量で第１導波路と第２導波路との間に結合される光の偏光の回転を誘発する。【選択図】図７Ｄ
Patent JP-2022532386-A (JP)
Title: ガイドテンプレート及び光学マーキング装置を備える医療用の位置決め／位置合わせ装置
IPC: A61B17/15
Filed: 2020-05-15
Abstract: 本発明は、対象物に特有であり、対象物の位置及び／又は向きに関連する幾何学的情報を患者上に直接に視覚化し、対象物を患者に対して位置及び／又は向きを決定するための医療用の技術装置（１）に関する。前記装置は、位置及び／又は向きが決められるべき対象物と協働するテンプレート（２）と、対象物に固有の幾何学的情報を視覚化するために、特定の位置でテンプレートに結合される光学マーキングユニット（３）と、を備える。【選択図】図１
Patent JP-2022533969-A (JP)
Title: 増加した電気機械歪みを有する固溶体セラミック材料を調製する方法、およびそれから取得可能なセラミック材料
IPC: C04B35/475
Filed: 2020-05-22
Abstract: 本発明は、増加した電気機械的歪みを有する固溶体セラミック材料を調製する方法、ならびにそれらから取得可能なセラミック材料およびそれらの用途に関する。一態様では、本発明は、非極性状態から極性状態への可逆的遷移に由来する電界誘起歪みを示す固溶体セラミック材料の電気機械歪みを増加させる方法を提供し、方法は、i) 極性結晶点群を有する少なくとも一つの極性ペロブスカイト化合物の、固溶体を形成するために組み合わされた場合に、大部分が非極性状態のセラミック材料を形成する非極性結晶点群を有する少なくとも一つの非極性ペロブスカイト化合物に対するモル比を決定することと、ｉｉ） 工程ｉ）で形成された固溶体の最大分極Ｐｍａｘ、残留分極Ｐｒ、および差Ｐｍａｘ－Ｐｒを決定することと、ｉｉｉ）ａ） 工程ｉ）で決定されたモル比を変更して、電界誘起歪みを示し、および最大分極Ｐｍａｘと残留分極Ｐｒとの間の差Ｐｍａｘ－Ｐｒが工程ｉ）の固溶体よりも大きい同じペロブスカイト化合物の異なる固溶体を形成すること、またはｉｉｉ）ｂ） 工程ｉ）で形成された固溶体を調製するために使用される処理条件を調整して、固溶体の最大分極Ｐｍａｘおよび残留分極Ｐｒにおける差Ｐｍａｘ－Ｐｒを増加させること、のいずれかと、を含む。
Patent JP-2023513647-A (JP)
Title: 表示基板及び表示装置
IPC: G09G3/3233
Filed: 2019-12-13
Abstract: 本開示は、表示基板を提供する。当該表示基板において、電源線と補償検出線は交互に間隔をおいて設けられており、任意の隣接する１本の電源線と１本の補償検出線との間には第２方向に延びる２列の画素駆動回路が設けられており、複数の画素駆動回路のうちのいずれかの画素駆動回路において、当該画素駆動回路の電源入力端は、当該画素駆動回路に最も近い１本の電源線と電気的に接続されており、当該画素駆動回路の補償検出信号端は、当該画素駆動回路に最も近い１本の補償検出線と電気的に接続されている。本開示は、表示装置をさらに提供する。
Patent JP-2023514886-A (JP)
Title: 充電方法、駆動用電池の電池管理システム及び充電スタンド
IPC: H02J7/00
Filed: 2021-01-28
Abstract: 本願の実施例は充電方法、駆動用電池の電池管理システム及び充電スタンドを提供しており、電気自動車の通常の充電を効果的に確保することができる。駆動用電池を充電するための充電方法は、前記駆動用電池の電池管理システムＢＭＳが前記駆動用電池の電池状態パラメータに基づき、パルス充電需要パラメータを決定するステップと、前記ＢＭＳが充電スタンドにパルス充電情報を送信するステップであって、前記パルス充電情報はパルス充電需要パラメータを含み、前記パルス充電需要パラメータは前記充電スタンドがパルス電流を出力するように指示することに用いられ、前記パルス電流は前記駆動用電池を充電することに用いられる、ステップと、を含む。
Patent JP-2022532952-A (JP)
Title: 地図ジオメトリ簡略化のための空間処理
IPC: G06T11/60
Filed: 2020-06-11
Abstract: コンピュータ・システム及び関連するコンピュータ実行方法が開示される。システムは、地理的領域のための１つ又は複数のデジタル地図を簡略化するようにプログラムされ、１つ又は複数のデジタル地図は、人間の眼に対する物理的外観を維持しつつ、それらのサイズを削減することによって、地理的領域の複数のサブ領域と関連付けられた複数の生の地図タイルに編成されている。
Patent JP-2022538112-A (JP)
Title: サポートカテーテル用トルク付属品
IPC: A61M25/09
Filed: 2020-06-30
Abstract: ガイドワイヤ制御アセンブリ（１００）は、ガイドワイヤ（１０５）に被さって配置されたカテーテルシャフトの回転を可能にしながら、ガイドワイヤを静止状態に保ち得る。ガイドワイヤ制御アセンブリは、ガイドワイヤを受け入れるための通路（１１４）を備えたハウジング（１１０）と、ハウジングに接続され、通路に配置されたガイドワイヤを選択的に把持し解放するように作動可能なクラッチメカニズム（１３０）と、ハウジングに回転可能に接続されたインタフェース（１５０）とを含み得る。インタフェースは、カテーテルシャフト（１０７）に取り付けられたカテーテルハブ（１７０）を受け入れることができ、カテーテルハブにトルクをかけることを可能にする。
Patent JP-2022040211-A (JP)
Title: Signal processing device, radio device, fronthaul multiplexer, beam control method and signal synthesis method
IPC: H04B7/06
Filed: 2022-01-05
Abstract: PROBLEM TO BE SOLVED: To provide a signal processing device capable of individually controlling beam directions of a plurality of radio devices downstream of a fronthaul multiplexer. 
     SOLUTION: A signal processing device performs communications with a plurality of radio devices operable to performing radio communications with user terminal devices through a fronthaul multiplexer. The signal processing device comprises: a storage section for storing pieces of beam information by which respective pieces of device ID information of the plurality of radio devices is associated with pieces of beam ID information assigned to beams formed by the plurality of radio devices so as to differ from each other among the beams; a transmit section which transmits the pieces of beam information to the plurality of radio devices through the fronthaul multiplexer; and a receiving section which receives pieces of beam ID information assigned to beams of the best communication quality, which the plurality of radio terminal devices have received from the user terminal devices, from the plurality of radio terminal devices through the fronthaul multiplexer. 
     SELECTED DRAWING: Figure 7 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023108089-A (JP)
Title: Liquid discharge device
Inventor: FUJII MASAKAZU
IPC: B41J11/02
Filed: 2022-01-25
Abstract: To provide a liquid discharge device in which durability of a conveying belt can be improved.SOLUTION: A liquid discharge device 11 is provided with: a discharge head 31 configured to discharge liquid to media M; a conveying belt 22 having an adhesive layer configured so that the media M can be made to adhere thereto, which is configured to enable the adhesive layer to convey the media M; a heating part configured to heat the conveying belt 22; a pressing part 60 configured to press the media M against the conveying belt 22 heated by the heating part; a flow path member 36 that regulates a flow path of liquid to be supplied to the discharge head 31; an airflow generating part 56 configured to generate airflow which is sprayed to the conveying belt 22 passing on the pressing part 60; and a heat exchanging mechanism 58 configured to exchange heat between a heat absorbing part 58a that absorbs heat and a heat discharging part 58b that discharges heat. The heat discharging part 58b contacts the flow path member 36, and the heat absorbing part 58a is arranged in the middle of an airway pathway 57 through which airflow passes.SELECTED DRAWING: Figure 6
Patent JP-2023069989-A (JP)
Title: methacrylic acid ester polymer
Inventor: TANAHASHI HIROMASA
IPC: C08F4/54
Filed: 2022-01-25
Abstract: To provide a highly stereoselective methacrylic acid ester polymer having a low molecular weight and a wide molecular weight distribution with a smaller amount of catalyst used than before by improving initiator efficiency in the production of a methacrylic acid ester polymer by polymerization.SOLUTION: Provided is a methacrylic acid ester polymer, which is a methacrylic acid ester polymer (C) containing methacrylic acid ester units (A) by 95 to 99.99 mol % and acrylic acid ester units (B) by 0.01 to 5 mol %, and in which, characterized, (a) the syndiotacticity (rr) of the triad representation is 65 to 85%, (b) the number average molecular weight (Mn) is 20,000 to 180,000, and (c) the molecular weight distribution (Mw/Mn) is 1.2 to 3.0.SELECTED DRAWING: Figure 1
Patent JP-2023109346-A (JP)
Title: Sealant film, laminate film, and packaging material
Inventor: TOMIYA DAIKI
IPC: B32B27/00
Filed: 2022-01-27
Abstract: SOLUTION: Provided is a sealant film, comprising a surface resin layer (A), an adhesive resin layer (B), a release resin layer (C), and a heat sealable resin layer (D) laminated, wherein the adhesive resin layer (B) comprises a thermoplastic elastomer (b1) and a tackifier resin (b2), the release resin layer (C) comprises an ethylenic ionomer (c1) having a polar group concentration exceeding 5.5 mole% in an amount of 40 mass% or more of resin components contained in the release resin layer (C) and, further, the release resin layer (C) comprises an ethylenic ionomer (c2) having a polar group concentration equal to 5.5 mole% or less in an amount of 0 to 60 mass% of resin components contained in the release resin layer (C), and the heat sealable resin layer (D) comprises an ethylenic resin (d1).SELECTED DRAWING: None
Patent JP-2023057007-A (JP)
Title: Polyvinyl alcohol film, optical film having the same, and method for manufacturing the same
Inventor: CHEN CHIA-YING
IPC: B29C48/88
Filed: 2022-01-28
Abstract: To provide a polyvinyl alcohol film, an optical film including the polyvinyl alcohol film, and a method for manufacturing the polyvinyl alcohol film and the optical film.SOLUTION: The present invention relates to a polyvinyl alcohol film, an optical film including the polyvinyl alcohol film, and a method for manufacturing the polyvinyl alcohol film and the optical film. The integration index value obtained by multiplying the absorption peak ratio of FTIR-ATR, the average value of the crystal particle diameter, and (the maximum crystal particle diameter-the minimum crystal particle diameter) by each other at 1140 cm-1/1090 cm-1 of the polyvinyl alcohol film is in the range of 0.90 to 4.50. The polyvinyl alcohol film has a low color unevenness and a high color tone evenness.SELECTED DRAWING: Figure 1
Patent JP-2022048345-A (JP)
Title: robot
IPC: B25J13/08
Filed: 2022-02-03
Abstract: PROBLEM TO BE SOLVED: To provide a mobile body and a robot which can be more stably moved. 
     SOLUTION: A mobile body includes a body part, an arm, a driving mechanism, and an angle detector. The body part moves on a first surface of a first structure between the first structure and a second structure. The arm is rotatably provided on the mobile body, and is brought into contact with a second surface of the second structure facing the first surface. The driving mechanism is connected to the body part and the arm, and applies a force driven to the arm rotation direction. The angle detector detects an angle of the arm relative to the body part. 
     SELECTED DRAWING: Figure 1 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023114352-A (JP)
Title: Divider
Inventor: TAKEUCHI SHINOBU
IPC: B65D25/04
Filed: 2022-02-04
Abstract: To provide a technology that can suppress the occurrence of wear powder and damage to articles even when hard articles are stored, and also suppress damage to the user's hands when the user removes the stored articles.SOLUTION: The divider includes a plurality of accommodations that can hold articles, and the plurality of the accommodations are connected by side sections with their respective openings facing up, and each is fabricated from a synthetic leather fabric.SELECTED DRAWING: Figure 1
Patent JP-2023115953-A (JP)
Title: Update time setting program, update time setting device, and update time setting method
Inventor: MORINO MORITO
IPC: G06F8/65
Filed: 2022-02-09
Abstract: To streamline updating of components used for providing services.SOLUTION: A computer acquires update information of a component used to provide a service. The computer identifies the service associated with the component indicated by the update information based on service information that associates the service with the component. The computer sets an update start time to start updating the component based on usage end time when the usage of the service ends, and outputs the update start time.SELECTED DRAWING: Figure 2
Patent JP-2023117271-A (JP)
Title: Mobile robot and flight system
Inventor: KAWASAKI JUN
IPC: B64C25/34
Filed: 2022-02-10
Abstract: To carry a power cable to a high place more readily.SOLUTION: A mobile robot moving along a guide member includes: a contact part coming into contact with the guide member to regulate a movement direction of the mobile robot in a direction along the guide member; a propulsion part for generating propulsive power in the direction along the guide member; and a support part for supporting a power cable.SELECTED DRAWING: Figure 1
Patent JP-2023121621-A (JP)
Title: Deposit system and deposit machine
Inventor: TAKAHASHI SHOTA
IPC: G07D11/20
Filed: 2022-02-21
Abstract: To enable a user to easily select a desired deposit category.SOLUTION: An information processing device 20 accepts selection of selection classification from hierarchical deposit category classification. The information processing device 20 outputs a code 1 including the selection classification. Upon reading the code 1 and accepting a deposit, a deposit machine 10 specifies the selection classification from the code 1. The deposit machine 10 performs counting associating the deposit and the selection classification.SELECTED DRAWING: Figure 1
Patent JP-2022129388-A (JP)
Title: Image forming apparatus
Inventor: KOJIMA SATOYUKI
IPC: B41J29/38
Filed: 2022-02-22
Abstract: To further reduce power consumption in a mode with low power consumption.SOLUTION: An image forming apparatus has, as operation modes for consuming AC power from a commercial power supply PW, a first mode and a second mode in which consumption of the AC power is lower than that in the first mode. The image forming apparatus comprises: two power supply lines to which the AC power is input; a filter C122 that is installed between the two power supply lines and reduces noise in the AC power; and a heater protective relay 130 that is arranged between any one of the two power supply lines and the filter C122, connects the two power supply lines and the filter C122 in the first mode, and restricts the connection between any one of the two power supply lines and the filter C122 in the second mode.SELECTED DRAWING: Figure 2
Patent JP-2022071023-A (JP)
Title: Hydrogel beads for nucleotide sequencing
IPC: C12M1/00
Filed: 2022-02-24
Abstract: PROBLEM TO BE SOLVED: To provide hydrogel beads encapsulating genetic materials, and to provide methods for analyzing genetic materials using the same. 
     SOLUTION: Provided is a method for analyzing a genetic material from an individual cell, comprising the steps of: contacting multiple cells with hydrogel in oil to form a mixture; stirring the mixture with a reversible crosslinker to produce multiple beads; contacting the multiple beads with a reagent to process a genetic material; separating the beads with a solid support; and cutting the separated beads to allow diffusion of the encapsulated material from the separated beads, each bead encapsulating a different genetic material, and each bead containing pores that allow diffusion of the reagent through the beads while retaining the genetic material. 
     SELECTED DRAWING: None 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2022066281-A (JP)
Title: Whiteboard and projection screen combined film
IPC: G03B21/60
Filed: 2022-02-25
Abstract: PROBLEM TO BE SOLVED: To provide a whiteboard and a projection screen combined film that has diffuse reflection of light suitable for projection, does not produce hot spots, and can obtain a clear projection image with a wide viewing angle, and also can erase marker ink well. 
     SOLUTION: There is provided a combined whiteboard and projection screen film in which a UV curable resin cured film (B) is formed on a base material (A) made of a thermoplastic resin and has such unevenness that the 60° gloss X and the 85° gloss Y fall within the ranges of 1) 2) below. 1)20≤X≤40 2)30≤Y≤60. 
     SELECTED DRAWING: Figure 1 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023127884-A (JP)
Title: collection kit
Inventor: SASAKI MICHIHIRO
IPC: G01N1/10
Filed: 2022-03-02
Abstract: To provide a collection kit that allows even a less experienced operator to collect a precise amount of a liquid sample into a culture bottle.SOLUTION: A collection kit 10 comprises: a tube for connection 12 that is connectable with a platelet bag storing a liquid sample; a syringe 14 that stores a predetermined amount of the liquid sample; and a holder for sampling 16. The syringe has a barrel body 22, a gasket 24 that slides inside the barrel body 22, and a plunger 26 that is attached to the gasket 24. The barrel body 22 has a capacity that allows storage of the liquid sample in an amount collected in two culture bottles 92, 94. The syringe 14 has a stopper structure that inhibits a movement of the gasket 24 against a negative pressure of the culture bottles.SELECTED DRAWING: Figure 6
Patent JP-2023128553-A (JP)
Title: Fitting
Inventor: ISHII HIRONORI
IPC: E05B15/02
Filed: 2022-03-03
Abstract: To attach an engaging member to a depth surface used as a guide when moving a sash, without complicating an operation of building the sash in a frame body.SOLUTION: A fitting restricts a movement of a sash 20A relative to door vertical frames 13, 14 by engaging a lock operation member 41 provided in the door vertical frame 13 with an engaging member 42 provided in the sash 20A. Engaging parts 42c, 43e that engage with each other by moving along an extending direction of the door vertical frame 13 and prohibit a tip part of the engaging member 42 from moving in a direction separating from a depth surface are provided between the engaging member 42 and the depth surface opposing the door vertical frame 13 in the sash 20A. A fixed plate part 42b that is fixed by screwing a screw member 27a in the depth surface opposing an upper frame 11 in the sash 20A is provided in the engaging member 42.SELECTED DRAWING: Figure 8
Patent JP-2023128916-A (JP)
Title: Determination method of addition rate of high-performance ae water-reducing agent
Inventor: TANAKA YUTARO
IPC: G01N33/38
Filed: 2022-03-04
Abstract: To provide a method enabling determination of an addition rate of high-performance AE water reducing-agents enabling production of concrete having desired fluidity.SOLUTION: A determination method of an addition rate of high-performance AE water-reducing agents is provided to determine a first addition rate which is the mass ratio of the high-performance AE water reducing agents to cement in concrete materials, in order to produce the concrete by kneading the concrete materials using cement, fine aggregates, coarse aggregates, high-performance AE water-reducing agents, and water. The determination method comprises: a mortar production step of producing mortar by kneading mortar materials using cement, fine aggregates, high-performance AE water reducing agents, and water; a measurement step of measuring a flow value of the mortar; and a determination step of when the flow value is 275 mm or more and 325 mm or less, determining a first addition rate based on a second addition rate, the mass ratio of the high-performance AE water reducing agents to the cement in the mortar materials.SELECTED DRAWING: Figure 1
Patent JP-2023129080-A (JP)
Title: Flame retardant liquid and flame retardant method
Inventor: ATSUMI KAZUHIKO
IPC: C09K21/12
Filed: 2022-03-04
Abstract: To provide a flame retardant liquid and a flame retardant method that can impart flame retardancy and water resistance to a target material including an OH group, such as wood, at relatively low temperatures.SOLUTION: A flame retardant liquid includes polyphosphoric acid alkyl amine salt, urea, and water. A flame retardant method includes an impregnation step for impregnating a target material including an OH group with the flame retardant liquid, and a heating step for heating the target material impregnated with the flame retardant liquid within the temperature range of 110°C or higher but lower than 140°C .SELECTED DRAWING: Figure 2
Patent JP-2023131283-A (JP)
Title: Reduced pellet production method
Inventor: YAMAKI OSAMU
IPC: C21B13/02
Filed: 2022-03-09
Abstract: To provide a blast furnace reduced pellet production method capable of efficiently producing blast furnace reduced pellets by a hydrogen reduction shaft furnace using self-fluxing pellets.SOLUTION: A reduced pellet production method has a process in which self-fluxing pellets are reduced with a reducing gas essentially consisting of hydrogen by a shaft furnace, and has: a first step in which samples of the self-fluxing pellets are subjected to a reduction test with the reducing gas at plural reduction temperatures; a second step in which, based on the test result of the reduction test, a relation between arrival times from a state where the self-fluxing pellets are non-reduced or a state where they are pre-reduced to wustites to a state where they reach a prescribed reduction rate and the reduction temperatures is obtained; and a third step in which, based on the relation, a reduction temperature in which the arrival time is shortest and reduction efficiency is highest in a range of 1,000°C or less is determined, and based on the reduction temperature, the blowing temperature of the reducing gas upon producing reduced pellets in the shaft furnace is set.SELECTED DRAWING: Figure 1
Patent JP-2023131951-A (JP)
Title: Determination system, determination method and program
Inventor: TSUKAHARA TAKESHI
IPC: G06Q30/0601
Filed: 2022-03-10
Abstract: To determine suspicion of fraud accurately.SOLUTION: A determination system comprises an acquisition unit that acquires determination object information indicating e-commerce content, a change unit that changes one or both of a rule included in a plurality of rules and a criterion included in the rule for each determination processing performed by a determination unit so that the e-commerce user does not identify the rule or the criterion included in the rule that the determination unit uses for the determination, and a determination unit that determines suspicion of e-commerce fraud based on the determination object information and the plurality of rules including one or both of the rule changed by the change unit and the criterion.SELECTED DRAWING: Figure 1
Patent JP-2023132071-A (JP)
Title: Cleaning device
Inventor: MIHASHI HIROSHI
IPC: B08B1/04
Filed: 2022-03-10
Abstract: To provide a cleaning device which can remove foreign matters in different sizes even from an object in which there are unevenness and steps on a surface.SOLUTION: A cleaning device comprises: a cleaning roller 10 which contacts an object surface; a roller-shaped cleaning brush 20 whose rotational shaft is arranged in parallel to the cleaning roller and which contacts the object surface; and an air nozzle 30 which discharges compressed air from the conveyance direction upstream side to the object surface. The rotation direction of the cleaning roller at a contact portion with the object surface is the forward direction with respect to the conveyance direction. The rotation direction of the cleaning brush at the contact portion with the object surface is the reverse direction with respect to the conveyance direction. The air nozzle, the cleaning brush and the cleaning roller are arranged in this order from the upstream side in the conveyance direction. The spray position where the compressed air is sprayed to the object surface is on the conveyance direction upstream side with respect to a position where the cleaning brush contacts the object surface.SELECTED DRAWING: Figure 2
Patent JP-2022069579-A (JP)
Title: Manufacturing method of conifer-derived pulp fiber for paper and conifer-derived pulp fiber for paper
IPC: D21H11/14
Filed: 2022-03-15
Abstract: PROBLEM TO BE SOLVED: To provide a conifer-derived pulp fiber for paper, which is capable of suppressing a surface roughness of paper made of the conifer-derived pulp fiber and suppressing a decrease in a tensile strength. 
     SOLUTION: There is provided a conifer-derived pulp fiber for paper, in which a length load average fiber length is 1.6 to 2.1 mm, and a Canadian Standard freeness of the pulp fiber for paper may be 500CSF mL or higher. Hand-made paper manufactured with a blending amount of the pulp fiber for paper of 90 mass% or more has a density of 300 kg/m 3  or more, has a maximum elongation of 5% or more, and may have a tensile strength of 35 N/25 mm or more. 
     SELECTED DRAWING: Figure 2 
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