baber/WOPTO huggingface dataset:
Patent JP-2022528600-A (JP)
Title: １型真性糖尿病を有する患者の治療のためのソタグリフロジンの使用
IPC: A61P3/10
Filed: 2020-02-28
Abstract: 本発明は、ボディマス指数（ＢＭＩ）２７ｋｇ／ｍ２以上の１型真性糖尿病の成人における血糖コントロールを改善するためのソタグリフロジンの使用に関する。【選択図】なし
Patent JP-2022525890-A (JP)
Title: Ｄｎａ試料のメチル化変化を検出するための方法およびシステム
IPC: C12Q1/6851
Filed: 2020-03-17
Abstract: ＤＮＡ試料、特に血漿および尿などの生体液から得られたＤＮＡ試料におけるメチル化変化を高感度に検出するための方法およびシステムが提供される。【選択図】なし
Patent JP-2022525554-A (JP)
Title: 植物栽培光源および植物栽培装置
IPC: A01G31/00
Filed: 2020-03-26
Abstract: 本発明は、植物栽培光源および植物栽培装置に関するものである。本発明の実施形態によると、植物栽培光源は主光源および補助光源を含む。このとき、主光源は少なくとも２つのピーク（ｐｅａｋ）波長を有する光を放出する。また、２つのピーク波長は、葉緑素が吸収する光の波長帯に含まれる。【選択図】図１
Patent JP-2022528207-A (JP)
Title: 可変軌道角運動量で多重化された信号を逆多重化および復調するための方法およびシステム
IPC: H04B10/66
Filed: 2020-04-09
Abstract: 軌道角運動量多重化によってグループ化された振幅変調信号を逆多重化および復調（特に、「局所的に」逆多重化および復調）するための方法が記載されている。この方法は、軌道角運動量変数で多重化された、変調チャネルを伝送する電磁ビームの２つの部分が入力として提供される干渉構造４０の下流に配置されたビーム検出器によって検出された位相差値ΔＰａｂおよびΔＲに基づいて、第１の変調ビームＦｍ１および少なくとも１つの第２の変調ビームＦｍ２のそれぞれで変調された情報ａ（ｔ），ｂ（ｔ）を逆多重化および復調することを含む。前述の方法を実施できる振幅変調信号を逆多重化および復調するための対応するシステム１００も記載されている。
Patent JP-2022529436-A (JP)
Title: 低毒性の有機第三級および第四級アミンならびにそれらの使用
IPC: C07C215/14
Filed: 2020-04-15
Abstract: 式Ｉおよび／または式ＩＩの第三級アミンおよび第四級アンモニウム化合物が提供される。本技術はまた、電子機器処理（例えば、半導体処理組成物）、洗浄、剥離、脱脂、またはそれらの２つ以上の組み合わせに有用であり得る化合物のうちの１つ以上を含む組成物を提供する。式Ｉおよび／または式ＩＩの化合物は、水酸化テトラメチルアンモニウムの低毒性代替物として有用であり得る。
Patent JP-2022530138-A (JP)
Title: コンパクトなダンネージ変換機
IPC: B31D5/00
Filed: 2020-03-25
Abstract: シートストック材料が変換機を通って下流に移動するにつれて、シートストック材料を比較的低密度のダンネージ製品に変換するダンネージ変換機が提供される。変換機は、シートストック材料を内側へ集めるように構成される形成アセンブリと、形成アセンブリの下流にある供給アセンブリと、を備える。形成アセンブリは、入口と、入口の下流にある相対的により小さい出口とを有する収束シュートを含み、収束シュートは、収束軸に沿って整列される。供給アセンブリは、平行な回転軸を中心にそれぞれ回転可能な一対の回転可能部材を有する。回転可能部材はシートストック材料を成形アセンブリから供給アセンブリの下流に供給するように配置されており、回転部材は、回転軸を接続し、かつ回転軸に垂直な線に垂直な供給軸を定める。変換機は、収束軸が供給軸と整列せず交差することを特徴とする。
Patent JP-2022532858-A (JP)
Title: 歯列矯正の方法およびデバイス
IPC: A61C7/28
Filed: 2020-05-01
Abstract: 患者の歯列弓内の歯をスプリントおよび再配置するための歯列矯正デバイスおよび方法。方法は、第1の歯列矯正アタッチメント／アンカーユニットを歯列弓内の第1の歯に固定するステップと、第2の歯列矯正アタッチメント／アンカーユニットを歯列弓内の第2の歯に固定するステップと、第1および第2の歯列矯正アタッチメント／アンカーユニットを実質的に剛性の細長いスプリンティング部材と強固に接続することによって第1および第2の歯をスプリントし、それによって歯列矯正アンカレッジを提供するステップと、前記歯列弓内の第3の歯を再配置するために、第1および第2の歯列矯正アタッチメント／アンカーユニットのうちの少なくとも1つと前記第3の歯とに係合するアライナートレイのシーケンスを適用するステップとを含む。デバイスは、歯に固定されるための歯列矯正アタッチメント／アンカーユニットを提供し、ユニットは、取り付け部分と、取り付け部分から横方向に延在する突起であって、突起および取り付け部分が、空洞軸に沿って近心－遠位方向に延在する長手方向の空洞を画定し、空洞が、開口部を備え、長手方向に延在する細長いスプリンティング部材を開口部を通して空洞内に受け入れ、配置するように構成された、突起とを含む。アタッチメント／アンカーユニットは、アーチの前部を再配置または矯正するだけでなく、臼歯および／または小臼歯の位置を調節することも望ましい場合に、典型的にはアライナーまたはトレイと共に使用することが意図される。
Patent JP-2022535751-A (JP)
Title: 熱電素子
IPC: H01L35/30
Filed: 2020-05-28
Abstract: 本発明の一実施例に係る熱電素子は、第１絶縁層、前記第１絶縁層上に配置された第１基板、前記第１基板上に配置された第２絶縁層、前記第２絶縁層上に配置された第１電極、前記第１電極上に配置されたＰ型熱電レッグおよびＮ型熱電レッグ、前記Ｐ型熱電レッグおよびＮ型熱電レッグ上に配置された第２電極、前記第２電極上に配置された第３絶縁層、そして、前記第３絶縁層上に配置された第２基板を含み、前記第１絶縁層は第１酸化アルミニウム層を含み、前記第１基板はアルミニウム基板であり、前記第２基板は銅基板であり、前記第１基板は低温部であり、前記第２基板は高温部である。
Patent JP-2022535283-A (JP)
Title: リーダー配列
IPC: C12N15/62
Filed: 2020-06-05
Abstract: 本発明は、フォトラブダス属（Photorhabdus）ビルレンスカセット（ＰＶＣ）エフェクターリーダー配列の、ペイロードをＰＶＣニードル複合体中にパッケージするための使用、及びパッケージされたＰＶＣニードル複合体を製造する関連方法を提供する。ペイロードは、ポリペプチド、核酸、又はそれらの組み合わせから選択される１つ以上であり、リーダー配列及びペイロードは、野生型ＰＶＣエフェクタータンパク質と区別されるエフェクター融合物を形成する。
Patent JP-2023524326-A (JP)
Title: 新規ビュー合成のためのニューラルブレンド
IPC: H04N13/268
Filed: 2021-04-08
Abstract: 目標被写体の仮想ビューを生成するために、複数の入力画像、複数の深度画像、および複数のビューパラメータを受信するためのシステムおよび方法について説明する。システムおよび方法は、複数の入力画像と、複数のビューパラメータと、複数の深度画像のうちの１つとに基づいて、複数のワープ画像を生成し得る。複数の深度画像、複数のビューパラメータ、および複数のワープ画像をニューラルネットワークに提供することに応答して、システムおよび方法は、目標被写体の仮想ビューの画素に色を割当てるためにブレンド重みをニューラルネットワークから受信し、ブレンド重みおよび仮想ビューに基づいて、ビューパラメータに従って合成画像を生成し得る。
Patent JP-2022540795-A (JP)
Title: 低インピーダンス電極構造
IPC: A61B18/14
Filed: 2020-07-02
Abstract: 電気生理学的測定のためのカテーテルは、近位端及び遠位端を含むカテーテルシャフトを含んでよい。導電体が、カテーテルに取り付けられてよい。いくつかの実施例において、カテーテル先端部は、カテーテルシャフトの遠位端に位置してよい。カテーテル先端部は、導電体及び電極を含んでよい。いくつかの実施例において、導電体は、フレキシブル回路に沿ったトレースであってよい。導電体は、ＥＣＵに通信可能に接続されるように構成されてよく、電極は、導電体上に配置されてよい。様々な実施例において、電極の接触面領域は、インピーダンス低減層を含んでよい。【選択図】図２
Patent JP-2022539230-A (JP)
Title: レッグウェア物品
IPC: A41B11/14
Filed: 2020-06-25
Abstract: 編成領域（１２２）を有する少なくとも１つのレッグ部分（１１０）を有するレッグウェア物品であって、着用状態でほとんど見ることができないが、しかしレッグウェア物品の着用者の皮膚の小さなシミを隠し、ひいてはレッグウェア物品の着用者の脚の所期視覚的効果を作り出す、レッグウェア物品を提供するために、編成領域（１２２）の重み付け垂直－垂直光透過度ＴＶ，ｎ－ｎと、編成領域（１２２）の重み付け垂直－拡散光透過度ＴＶ，ｎ－ｄｉｆｆとからの商Ｑｔｔが少なくとも４．０であることが提案される。【選択図】図１
Patent JP-2022036181-A (JP)
Title: Exhaust emission control device
IPC: F01N3/033
Filed: 2022-01-05
Abstract: PROBLEM TO BE SOLVED: To properly regenerate a collection filter collecting particulate matters. 
     SOLUTION: An exhaust emission control device is equipped with a GPF (17) collecting soot discharged from an engine (2), and an ECU (3) executing the temperature rise control of the GPF. The EUC has a forcible regeneration determining portion (30) determining the forcible regeneration of the GPF, and a temperature rise control portion (31) changing temperature rise control on the basis of engine rotation speed and an engine load when the forcible regeneration determining portion determines the forcible regeneration of GPF. The temperature rise control portion executes temperature rise control for a low area in a low area where the engine rotation speed and/or the engine load is low, and executes temperature rise control for a high area in a high area where the engine rotation speed and/or the engine load is high. The temperature rise control includes at least control for adjusting an ignition timing. 
     SELECTED DRAWING: Figure 1 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023102185-A (JP)
Title: Optical scanner and control method thereof
Inventor: NAONO TAKAYUKI
IPC: G02B26/10
Filed: 2022-01-11
Abstract: To provide an optical scanner which reduces variations of a line interval of spiral orbits and a control method thereof.SOLUTION: When a resonant frequency in an order higher by one from a frequency of a basic resonance mode is frH, such a condition that a ratio of a first voltage level to a second voltage level being the maximum value of a voltage level in an entire frequency range of a frequency component of a periodic voltage signal is equal to or less than -55 dBV is satisfied. Here, regarding an axis of a first axis and a second axis where a resonance mode in a lower order exists, the maximum value of a voltage level in a frequency range of (1±1/20)×frL and a frequency range of (1±1/20)×frH of the frequency component of the periodic voltage signal is the first voltage level, and regarding an axis where the resonance mode in the lower order does not exist, the maximum value of the voltage level in the frequency range of (1±1/20)×frH of the frequency component of the periodic voltage signal is the first voltage level.SELECTED DRAWING: Figure 6
Patent JP-2022187464-A (JP)
Title: Analysis cartridge
Inventor: LAI YING-TA
IPC: G01N37/00
Filed: 2022-01-13
Abstract: To provide a novel analysis cartridge.SOLUTION: The analysis cartridge includes a first cover, a second cover, a plurality of containers, a plurality of fluid tunnels, and a rotary valve. The second cover has two opposing surfaces, a plurality of first through holes and one second through hole individually penetrate the two opposing surfaces, and the first cover is attached to the second cover. The plurality of containers are disposed between the first cover and the second cover, and each container is aligned with and embedded within the first through hole. The plurality of fluid tunnels are disposed over the first cover and each tunnel is individually connected to a first pipette. The rotary valve is rotatably disposed between the first cover and the second cover so as to correspond to the second through hole, and flow passages disposed above the rotary valve are individually connected to the containers.SELECTED DRAWING: Figure 1
Patent JP-2023104610-A (JP)
Title: connector
Inventor: FUKAYA TOMOYOSHI
IPC: H01R13/64
Filed: 2022-01-18
Abstract: To provide a connector which is fixed to a mounted body in a fitting state where a mating housing and a housing are surely fitted.SOLUTION: A connector 1 comprises: a housing 11 which is fitted to a mating housing 21; a fixing member 30 which is assembled to the housing 11, moves between a temporary lock position and a final lock position after the fitting to the mating housing 21 and is fixed to a mounted body 40 at the final lock position; and a fitting detection unit 33 which detects and guarantees a regular fitting state of both the housings 11 and 21. A lock part 16 which temporarily locks and finally locks the fixing member 30 is provided in the housing 11. The fixing member 30 is integrally provided with the fitting detection unit 33, and is provided with a temporary lock part 36 and a final lock part 38 to which the lock part 16 of the housing 11 is locked. In a case where both the housings 11 and 21 are in the regular fitting state, the fixing member 30 is fixed to the mounted body 40.SELECTED DRAWING: Figure 8
Patent JP-2023105748-A (JP)
Title: Liquid metal embrittlement susceptibility evaluation method
Inventor: YOSHINAGA Chisato
IPC: G01N3/18
Filed: 2022-01-19
Abstract: To provide a liquid metal embrittlement susceptibility evaluation method that can evaluate liquid metal embrittlement susceptibility of a metal material highly accurately.SOLUTION: A method is configured to: prepare a plurality of sample materials including a first metal part and a second metal part arranged in at least a part of the first metal part and being lower in a melting start temperature than the first metal part, in which at least one of a chemical composition of the first metal part and a metallographic structure thereof is different from each other, and a basis weight of the second metal part and chemical composition thereof are organized; apply a load to give an elongation so that a test temperature of a plurality of sample materials and a displacement magnitude or a stress value thereof are organized; perform a high-temperature elongation test for stopping the application of the load before the sample material fractures; and evaluate liquid metal embrittlement susceptibility of the first metal part on the basis of cracking occurring in the first metal part by the high-temperature elongation test.SELECTED DRAWING: Figure 17
Patent JP-2023106764-A (JP)
Title: Three-dimensional molding apparatus
Inventor: HASHIMOTO DAIKI
IPC: B29C64/393
Filed: 2022-01-21
Abstract: To provide a three-dimensional molding apparatus capable of facilitating a calculation process of calculating a distance between a deposition face and a tip end part in a control part.SOLUTION: A three-dimensional molding apparatus includes: a molding part having a nozzle for jetting a molding material from a nozzle opening formed at a tip end part; a stage having a deposition face on which the molding material is to be deposited; a transfer mechanism for varying a relative position between the nozzle and the stage; a measurement part for measuring a distance between the deposition face and the tip end part; and a control part for control the transfer mechanism. The measurement part has a contact type first detector which moves in conjunction with the nozzle, and a contact type second detector which moves in conjunction with the stage. The first detector and the second detector are constituted so as to detect the fact that one of the first detector and the second detector have come into contact with each other when the first detector and the second detector have come into contact.SELECTED DRAWING: Figure 2
Patent JP-2023108489-A (JP)
Title: Illumination system, control device, and, lighting method
Inventor: NARUSE YUKI
IPC: H05B47/125
Filed: 2022-01-25
Abstract: To provide an illumination system and the like capable of achieving both a lighting effect and a reduction in the discomfort of the illuminated object.SOLUTION: A illumination system 1 includes: an imaging unit 10 that irradiates colored light on a region 10a of a target surface; a lighting device 20 that illuminates a region 20a of the target surface with white light: and a detection device 40 that detects that a person has approached the region 10a. The region 10a and the region 20a partially overlap, and the lighting device 20 is controlled with the emission of white light in conjunction with the detection of the approach of the person by the detection device 40.SELECTED DRAWING: Figure 2
Patent JP-2023110136-A (JP)
Title: Fire probe system
Inventor: HORI MASAHIKO
IPC: G08B17/00
Filed: 2022-01-28
Abstract: To provide a fire probe system for suppressing the misrecognition of a fire caused by sunlight.SOLUTION: A fire probe system comprises: a plurality of probe devices 10 for probing a fire source position; and a general controller 20 for identify a fire source position from results of probe by the plurality of probe devices. Each of the plurality of probe devices includes: an infrared camera 12 for capturing an inside image of a range in charge so as to acquire detection information including temperature information and fire source position information; and an individual controller 11 for executing an identification process of identifying the fire source position on the basis of the detection information acquired by the infrared camera. A fire monitoring range is covered by the ranges in charge by at least two probe devices among the plurality of probe devices. When the position data of a fire source corresponding to the same position is acquired from the at least two probe devices among the plurality of probe devices, the general controller identifies the position data of the fire source corresponding to the same position as a fire source position in the fire monitoring range.SELECTED DRAWING: Figure 1
Patent JP-2023111565-A (JP)
Title: Stopper pulling-out cap
Inventor: YOSHINO KEI
IPC: B65D47/36
Filed: 2022-01-31
Abstract: To provide a stopper pulling-out cap easily achieving a superior barrier property.SOLUTION: A stopper pulling-out cap 1 comprises: an attachment part 9 attached to a mouth part 15a of a container 2 by engaging with an outer peripheral surface of the mouth part 15a; a cylindrical peripheral wall 10 which continues to the attachment part 9 and is in contact with an inner peripheral surface of the mouth part 15a; a bottom wall 11 which has a stopper pulling-out part 11c capable of being removed by breaking a thin-walled weakened part 11a and closes a lower end of the peripheral wall 10; a seal piece 12 protruding outward in a radial direction from an outer peripheral edge of a lower surface of the bottom wall 11 over the whole circumference; and a vapor deposition film covering lower surfaces of the bottom wall 11 and the seal piece 12.SELECTED DRAWING: Figure 2
Patent JP-2023111731-A (JP)
Title: Recognition system, collective entrance device, intercom system, control method, and control program
Inventor: KANNO KINYA
IPC: H04M9/00
Filed: 2022-01-31
Abstract: To provide a recognition system capable of operating an intercom system without touching the numeric keys or buttons of an intercom entrance device, a collective entrance device, an intercom system including them.SOLUTION: A recognition system 100 includes: an acquisition unit 34 that acquires information about an image including a state formed by moving at least part of a person picked up by an imaging unit 11d of an entrance hall 10 included in the intercom system 1 provided in a facility; and an output unit 35 that outputs information for operating the intercom system 1 depending on the result of the recognition of at least one of the letters, numbers, or control commands indicated by the state formed by moving at least part of the person based on the information acquired by the acquisition unit 34.SELECTED DRAWING: Figure 3
Patent JP-2023112305-A (JP)
Title: Base isolation furniture and base isolation device
Inventor: YANO AKIHIKO
IPC: E04H9/02
Filed: 2022-02-01
Abstract: To provide base isolation furniture capable of securing the safety of a user at the time of an earthquake by directly supporting furniture such as a bed and a chair, and a base isolation device for base isolation of the furniture.SOLUTION: A piece of base isolation furniture 100 has a structure in which a bed (furniture) 110 is suspended by a base isolation device 1. The base isolation device 1 is supported by a support part 120 which is in contact with a floor surface 130. The support part 120 has a framework structure having a U-shape in a front view. The bed 110 is supported on the floor surface 130 by leg parts 50 which are in contact with the floor surface 130. In a state where the leg parts 50 are in contact with the floor surface 130, the base isolation device 1 supports a part of a weight of the bed 110. In addition, the leg parts 50 have a structure in which a part thereof can be separated, and when separated, the bed 110 is supported by the base isolation device 1 except for the separated member, and in this state, the bed 110 is isolated by the base isolation device 1.SELECTED DRAWING: Figure 1
Patent JP-2022151622-A (JP)
Title: toner binder
Inventor: TABATA YUTA
IPC: C08G63/50
Filed: 2022-02-08
Abstract: To provide a toner binder excellent in dispersibility of a crystalline polyester resin in a toner.SOLUTION: Used is a toner binder which includes: a polyol component (x) containing an aliphatic diol having 2 to 24 carbon atoms; a polycarboxylic acid component (y) containing the aliphatic dicarboxylic acid having 2 to 24 carbon atoms; and a crystalline polyester resin which is a polycondensation with monohydric alcohol (z1) having two or more aromatic hydrocarbon groups and/or the monohydric alcohol (z2) having one polycyclic hydrocarbon group.SELECTED DRAWING: Figure 1
Patent JP-2022060306-A (JP)
Title: Information processing device, information processing method, and program
IPC: A63F13/69
Filed: 2022-02-08
Abstract: PROBLEM TO BE SOLVED: To provide an information processing device, an information processing method, and a program for increasing game play frequency by reducing a risk in generating a novel game medium without damaging a game property and by urging a player to enhance motivation of generating the novel game medium. 
     SOLUTION: An information processing device includes: a reception part for receiving an instruction from a player; a generation part for consuming a first game medium and a second game medium to generate a third game medium on the basis of a first instruction received from the player; and a cancellation part for returning at least one of the first game medium and the second game medium to a state before generating the third game medium on the basis of a second instruction received from the player and cancelling the creation of the third game medium in the case that a novel game medium based on the first game medium and the second game medium cannot be generated after generating the third game medium. 
     SELECTED DRAWING: Figure 7 
     COPYRIGHT: (C)2022,JPO&INPIT
Patent JP-2023120616-A (JP)
Title: Electronic device
Inventor: SATO HIDEKI
IPC: G03B17/02
Filed: 2022-02-18
Abstract: To provide a natural convection heat dissipation structure and a forced heat dissipation structure using fans as means of dissipating heat from a circuit board having a heat generating image sensor mounted thereon without increasing thickness of an image capturing device.SOLUTION: An image capturing device of the present invention comprises heat dissipation fins 703a, b, c, f, g having curved shapes formed continuously from an inlet port 603 to first exhaust ports 604, 605 on a metal plate 703 when viewed from a direction perpendicular to the metal plate 703.SELECTED DRAWING: Figure 7
Patent JP-2023120642-A (JP)
Title: Interior material
Inventor: ONO KOTARO
IPC: D06N7/00
Filed: 2022-02-18
Abstract: To provide an interior material allowing a base material and a skin material to be appropriately separated when disposed.SOLUTION: An interior material 1 has a planar skin material 2 and a base material 3 covered with the skin material 2. The interior material 1 further has an interlayer 4 made of photodegradable resin, which is welded or adhered to the skin material 2 and the base material 3 and disposed between the base material 3 and the skin material 2, and a hole part 3A passing through the base material 3 so as to allow the interlayer 4 to be exposed only on the rear side of the base material. Thereby, the interior material 1 has a structure allowing the interlayer 4 to be hardly exposed to an environment with light in a vehicle or the like under service conditions.SELECTED DRAWING: Figure 2
Patent JP-2023120942-A (JP)
Title: Die cast manufacturing method and apparatus
Inventor: IWAMOTO NORIHIRO
IPC: B22D17/22
Filed: 2022-02-18
Abstract: To arbitrarily arrange runner compression means when compressing a runner after molten metal injection by a plunger in a die cast manufacturing method.SOLUTION: After injecting a molten metal by first compression means to a mold clamped in a die cast manufacturing method, when second compression is performed through a runner directly connected to a cavity by the second compression means, the runner is bent and formed, second compression means is provided in a runner part directly connected to the cavity in the bent part and an orifice is arranged, and the compression is performed by the second compression means while preventing the backflow of the molten metal by a metal seal with a compression pin of the second compression means in the orifice portion.SELECTED DRAWING: Figure 2
Patent JP-2023122679-A (JP)
Title: Compound type thermally shrinkable tube
Inventor: ANDO AYAKO
IPC: F16L11/12
Filed: 2022-02-24
Abstract: To provide means for improving adhesiveness of a lead wire and a bush in place of a conventional cylindrical bush made of a rubber, aluminum, etc.SOLUTION: A compound type thermally shrinkable tube has a configuration consisting of a first member 11 formed of a first material which is not shrunk by heat, and a second member 12 connected to a first side part 11b of the first member 11 and formed of a second material which is shrunk by heat. In the configuration, a portion opposed with the first member 11 is present in the second member 12, and a cylinder 30 including a lead wire 4 is formed. In the configuration, the second member 12 is shrunk and abutted to the lead wire 4 in the cylinder 30 by heating the second member 12 of the cylinder 30. In the configuration, a third member 15 of the same or different material as or from the second member 12 is provided in a second side part 11a of the second member 12.SELECTED DRAWING: Figure 2
Patent JP-2023124154-A (JP)
Title: Threshold matrix generation method, image data generation method, program, threshold matrix, and image data generation apparatus
Inventor: IKEDA YUSAKU
IPC: H04N1/405
Filed: 2022-02-25
Abstract: To improve graininess in a highlight area and efficiently change a density in a tone change on a highlight side without loss of reproduction in a shadow part of a print image.SOLUTION: In a threshold matrix generation method, after a plurality of periodic areas 83 are set in a matrix space 80 and elements 81 existing every other one in a row direction and a column direction in each periodic area is set as target elements 81a, a step is performed for assigning threshold values ranging from one on the most highlight side to a predetermined switching threshold value sequentially to target elements in the plurality of periodic areas. Assuming that elements to which threshold values are assigned are regarded as determined elements 82, in the step, under a condition that the number of determined elements is almost same in the plurality of periodic areas and each determined element is positioned in the vicinity of any one determined element in each periodic area, a target element whose distance to all determined elements is largest is specified within the plurality of periodic areas and a threshold value is assigned to the target element.SELECTED DRAWING: Figure 12