baber/WOPTO huggingface dataset:
Patent JP-2001516839-A (JP)
Title: 内燃機関におけるスロットルバルブを介するガスフローの制御のための方法及び装置
IPC: F02D41/18
Filed: 1998-07-11
Abstract: (57)【要約】
本発明の課題は、少ない装置技術的なコスト及び調整技術的なコストで迅速かつ正確なガスフロー制御を可能にする方法及び装置を提供することである。上記課題は、内燃機関の燃焼室へのスロットルバルブを介するガスフローの制御のための方法であって、方法は以下のステップを有する、すなわち、目標値ガスフロー（ｍｓｓｏｌ）からスロットル目標調整値（ｗｄｋｓ）を計算し、スロットル目標調整値（ｗｄｋｓ）によってスロットルバルブを制御し、実際値ガスフロー（ｍｓｈｆｍ）を検出する、ステップを有する、内燃機関の燃焼室へのスロットルバルブを介するガスフローの制御のための方法において、スロットル実際調整値（ｗｄｋｂａ）を基礎にしてスロットルバルブを介するガスフロー（ｍｓｄｋ）を計算し、実際値ガスフロー（ｍｓｈｆｍ）とスロットルバルブを介する計算されたガスフロー（ｍｓｄｋ）との間の差（ｍｓｄｉｆ）を求め、スロットル目標調整値（ｗｄｋｓ）を計算する際にこの求められた差（ｍｓｄｉｆ）を考慮することを特徴とする、内燃機関の燃焼室へのスロットルバルブを介するガスフローの制御のための方法によって解決される。
Patent JP-2001517790-A (JP)
Title: 懸濁液中の繊維状粒子の測定方法および器械
IPC: G01N15/14
Filed: 1998-09-17
Abstract: (57)【要約】
本発明は懸濁液中の粒子測定方法および測定器械に関する。解決において懸濁液中の各繊維状粒子（２１０）の長さは薄い等辺の毛細管（３０８）中でラインカメラ（３０４）によって１つづつ光学的に測定される。繊維状粒子（２１０）は、とくに、繊維厚さ、壁厚さおよび微小繊維化のごとき特性を測定するために１または複数回毛細管（３０８）中で２つのまたはそれ以上のカメラ（３０４，３１６，３１８）によって作像される。
Patent JP-2001518540-A (JP)
Title: ゲル材料
IPC: A61L15/16
Filed: 1998-09-18
Abstract: (57)【要約】
傷の治療を初めとする体液を吸収する医療上の用途で使用するのに適したゲル材料は、粒子状のポリマー材料の粒子を含有し、同ポリマー材料は、水を吸収可能であると共に、約５５％以上のゲル含量を有するように橋かけ結合が形成される。同ポリマー材料は、水への溶解性を減小するために橋かけ結合が形成されて、水に溶解するよりもむしろ水中で膨張するようになったポリマーにより与えられる基質中で支持される。
Patent JP-2003521217-A (JP)
IPC: A23L7/10
Filed: 1998-11-06
Abstract: Methods and compositions are disclosed which comprise red rice fermentation products, that can be used as natural dietary supplements and/or medicaments for the treatment or prevention of hyperlipidemia and associated disorders and symptoms, such as cardiovascular diseases, cerebrovascular diseases, diabetes, hypertension, obesity, asthenic breathing, chronic headache, chest pain and tightness, limb swelling and distention, loss of appetite and excess expectoration. The methods and compositions are effective in lowering both the serum cholesterol and serum triglyceride levels in humans, and can be used for maintaining cardiovascular health. The invention also encompasses particular Monascus strains that yield fermentation products with the desired biological activities.
Patent JP-2001525242-A (JP)
IPC: B01J19/18
Filed: 1998-12-08
Abstract: Improved apparatus for mechanically stirring a quench-cooled subfluidized particulate bed of polymerized monomer lowers lumping of polymer particles by using substantially contiguous paddle stations disposed along the drive shaft within the reactor in combination with a plurality of sub-stations in at least one paddle station class, each sub-station having a width along the shaft of no more than 50 percent of the total width of the paddle station, and sub-station paddles attached to the shaft at each sub-station so as to sweep through the particulate bed. In some embodiments, a first class of stations is, advantageously, disposed within the reactor along a portion of the drive shaft in repeating groups of at least two stations and a second class of stations with sub-stations is disposed within the reactor along another portion of the drive shaft, preferably in repeating groups of at least one more than the number of stations in the repeating group of the first class, to further reduce lumping of polymer particles.
Patent JP-2002502189-A (JP)
Title: 移動データ転送用通信システム
IPC: H04L29/08
Filed: 1999-01-29
Abstract: (57)【要約】
移動データ転送用通信システムであって、通信ネットワーク（25）、アプリケーションモジュール（45，46，47）、および別体の端末モジュール（48）を含み、データは通信ネットワーク（25）とアプリケーションモジュール（45，46，47）との間で端末モジュール（48）を介して転送され、端末モジュール（48）はアプリケーションモジュールからエラー制御のようなネットワークから独立した動作を隠している。アプリケーションモジュール内ではなく端末モジュール内に通信スタック（12，13）を構成することによって、多様なアプリケーションモジュール（45，46，47，92）とインターフェイスをとることができる可搬形端末モジュール（48）内か単一のプラグインカード上で完全な通信パッケージを用意することができる。
Patent JP-2002508388-A (JP)
Title: 新規なＴＧＦ−βタンパク質精製方法
IPC: C07K14/495
Filed: 1998-12-10
Abstract: (57)【要約】
ＴＧＦ−βスーパーファミリーのタンパク質、例えば、骨形態形成タンパク質（ＢＭＰ）などの骨形成タンパク質を精製する方法が開示されている。
Patent JP-2002510859-A (JP)
Title: 弗素で被覆された半導体表面の作製方法
IPC: H01L21/306
Filed: 1999-03-19
Abstract: (57)【要約】
本発明によれば、弗素で被覆された半導体表面の作製方法が提供される。この本発明による方法は、次の工程：ａ）半導体基板を反応室中に準備する工程；ｂ）基板表面を水および／またはアルコールで湿潤させる工程；ｃ）弗素含有化合物を基板表面に導き、したがって弗素で被覆された清浄化半導体表面を作製する工程；ｄ）弗素含有化合物を反応室から除去する工程；およびｅ）弗素で被覆された清浄化半導体表面を、水少なくとも１０体積％およびアルコール少なくとも１０体積％を含有する混合物で湿潤させ、したがって所定量の弗素で被覆された清浄化半導体表面を作製する工程を有する。
Patent JP-2002515669-A (JP)
Title: シーケンス発生器
IPC: H04J13/00
Filed: 1999-04-26
Abstract: (57)【要約】
２進数または離散数値のシーケンスを生成するシーケンス発生器。本発明のシーケンス発生器は諸条件に柔軟に対応することができる。フィードバック信号を生成するフィードバック位置としてシフトレジスタ記憶位置を選択するために、第１の選択手段（３）を設ける。更に、フィードバック信号が入力されるフィードイン位置としてシフトレジスタ記憶位置を選択するために、第２の選択手段（４）を設ける。第１、第２選択手段を制御するための制御ビットシーケンスを記憶する複数の制御記憶位置を含む制御記憶手段を設けることも可能である。本発明のシーケンス発生器は、ＣＤＭＡ通信システムにおいてロングコード発生器またはショートコード発生器、あるいはそれらの兼用として使用することができる。
Patent JP-2002518915-A (JP)
IPC: H04L12/56
Filed: 1999-06-14
Abstract: Methods and apparatus for communicating data between continuous bit rate trunk channels and a cell-based network are disclosed. The apparatus includes trunk interface circuitry, data interface circuitry, and cell segmentation circuitry. The trunk interface circuitry receives continuous bit rate call data that is being communicated from an originator to a recipient. The data interface circuitry is operatively coupled to the trunk interface circuitry, and is operable to receive the call data from the trunk channel and to extract an original data stream. The cell segmentation circuitry is operative to receive the original data stream from the data interface circuitry and to produce data cells. The invention also features methods of producing data cells. The method includes receiving continuous bit rate call data over a trunk channel, processing the call data to extract an original data stream that is being communicated from an originator to a recipient, segmenting the original data stream into cell payload data, and forming data cells that include the cell payload data.
Patent JP-2002519192-A (JP)
Title: イオン交換パックによる微量の金属イオンの低減方法
IPC: G03F7/023
Filed: 1999-06-25
Abstract: (57)【要約】
本発明は、特別に設計されたイオン交換パックを利用することによる、金属イオンを非常に低い濃度でしか含まない溶液を得るための方法を提供する。また、このようなイオン交換パックを使用したプロセスで精製されたノボラック樹脂から、金属イオンを非常に低い濃度でしか含まないフォトレジスト組成物を製造する方法も提供される。
Patent JP-2002523255-A (JP)
Title: 多層共射出又は共押出物品の成形方法
IPC: B29C48/10
Filed: 1999-08-20
Abstract: (57)【要約】
（ｉ）選択された共射出温度で粘度を有する第一外側ポリマー樹脂層及び（ii）選択された前記共射出温度で粘度を有する第二内側ポリマー樹脂層を、選択された共射出温度で、共射出して、多層物品を成形することからなり、ここで、共射出温度での、外側ポリマー樹脂粘度の内側ポリマー樹脂粘度に対する比が、約２以下であり、そして共射出温度が、最高溶融樹脂の溶融温度よりも高く且つ最低分解樹脂の分解温度よりも低い、多層物品の共射出成形方法で、共押出方法も提供される。
Patent JP-2002533105-A (JP)
IPC: A01N63/12
Filed: 1999-12-23
Abstract: A composition and method for controlling scarabs, especially lawn scarabs, utilising certain strains of the entomopathogenic nematode species, Heterorhabditis zealandica are disclosed. The nematode strains used in the composition and method generally have an LD50 value of less than 300 IJ as measured by pot assays against final instar scarab larvae.
Patent JP-2002536634-A (JP)
Title: 揮発損失を内部で補正する粒子質量差モニター
IPC: G01N15/02
Filed: 2000-02-01
Abstract: (57)【要約】
粒子を含む気流（４２）中の粒子状物質の質量を第１質量検出器（５０Ａ）及び第２質量検出器（５０Ｂ）を用いて測定する。切り替え手段（４８Ａ、４８Ｂ、５６）により、粒子を含む気流と、粒子を含む気流と実質的に同一であるが粒子を含まない気流を第１質量検出器と第２質量検出器それぞれと、連続する測定期間中に交合させる。連続する測定期間それぞれに対する第１質量検出器（５０Ａ）が提供する測定値と、第２質量検出器（５０Ｂ）が提供する測定値の間の差を求める。この差は、測定期間中に生じる揮発損失を内部で補正する。この差から粒子を含む気流中の粒子状物質の質量または濃度が定量される。単一検出器（１０’、４０’）の実施態様も示される。
Patent JP-2002543317-A (JP)
Title: 非金属支持表面を有するピストンヘッドを備えた自由ピストン内燃機関
IPC: F02F7/00
Filed: 2000-01-06
Abstract: (57)【要約】
自由ピストン内燃機関は、実質的に円筒状の内側表面（３８）を有する燃焼シリンダ（１４）を含む。ピストン（１２、５６、７２および７４、９４）は、燃焼シリンダ（１４）内に往復運動するように配置されている。ピストン（１２、５６、７２および７４、９４）は、ピストンヘッド（２６、５８、７２、９６）と、ピストンヘッド（２６、５８、７２、９６）に取り付けられたプランジャロッド（２８、６０、７４、９８）とを含む。ピストンヘッド（２６、５８、７２、９６）は、燃焼シリンダ（１４）の内側表面に密接し、燃焼シリンダ（１４）の内側表面とで支持表面（３６）を定める実質的に円筒状の外側表面（３６）を有する。支持表面（３６）は、本質的に非金属材料から成る。
Patent JP-2003536283-A (JP)
IPC: H04W68/08
Filed: 2000-03-29
Abstract: Apparatus and method for paging a user terminal (UT) using a satellite communications system having a gateway and one or more satellites, wherein each satellite produces a plurality (n) of beams and each beam includes a plurality of channels. The method of the present invention includes the step of recalling a first location of the UT, wherein the first location corresponds to a location of the UT at a first time t1. In one embodiment, this is accomplished by performing a lookup in a table or database that includes location information for user terminals at different points in time. The method also includes the step of determining a first group (g1) of beams which covers the first location of the UT at a second time t2, where g1<n and time t2 is later in time than time t1. A page is then sent from the gateway to the UT on a channel, such as a paging channel, of at least one beam of the first group of beams. In one embodiment, the page is sent on the paging channel of each of the first group of beams.
Patent JP-2002541108-A (JP)
IPC: C07D401/14
Filed: 2000-03-28
Abstract: The invention relates to the treatment of leukemias with an inhibitor of the activity of VEGF receptor tyrosine kinase of the formula I, the substituents being defined in the specification; as well as to new phthalazine derivatives; processes for the preparation thereof; the application thereof in a process for the treatment of the human or animal body; the use thereof for the treatment of a disease, especially a disease caused by ocular neovascularization, such as age-related macula degeneration or diabetic retinopathy, or other diseases that respond to the inhibition of tyrosine kinases, such as a proliferative disease; a method for the treatment of such disease in mammals; and the use of such a compound for the manufacture of a pharmaceutical preparation for the treatment especially of a disease as mentioned above.
Patent JP-2002543425-A (JP)
Title: アルツハイマー病の治療のための化合物の同定法
IPC: G01N33/48
Filed: 2000-04-28
Abstract: (57)【要約】
本発明は、アルツハイマー病の治療のために有用な化合物を同定するための方法を特徴とする。
Patent JP-2002207004-A (JP)
Title: Image measuring instrument
Inventor: KOGA TETSUYA
IPC: G01N21/84
Filed: 2001-01-09
Abstract: PROBLEM TO BE SOLVED: To provide an image measuring instrument capable of reducing the restriction from an aspect of a design caused by an increase in the size of a table, the simplification of maintenance, cost reduction and the structural simplification of a stage. SOLUTION: The stage 11 is constituted by arranging a phosphor 19 on the surface (hereinbelow, called a stage surface) opposed to the object lens 5 of a plate material 13 molded from a material high in rigidity as a light emitting source using a light emitting material. An oblique light emitting excitation source 20 arranged in opposed relation to the stage surface is employed as the light emitting excitation source 19 of the phosphor 19. In this form, the phosphor 19 arranged on the stage surface is excited by the oblique light emitting excitation source 20 to emit light and becomes a transmission illumination light source with respect to a work 12. Herein, as the phosphor 19, for example, a phosphor using light such as ultraviolet rays, radiation, an electric field or the like as a light emission excitation source can be adopted.
Patent JP-2001303365-A (JP)
Title: Method for producing meta wholly aromatic polyamide yarn and yarn obtained by the method
Inventor: TOYOHARA KIYOTSUNA
IPC: D01F6/60
Filed: 2001-01-09
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a m-aramid yarn not containing salts, having excellent mechanical characteristics and thermal properties in an excellent productivity. SOLUTION: A meta wholly aromatic polyamide comprising a m- phenylenediamine isophthalamide as a main repeating unit is dissolved in an amide-based solvent to give a solution of polymer not containing salts, which is discharged to a coagulation bath composed of an amide-based solvent and water and not containing salts, coagulated as a porous linear body, successively drawn in a plastic drawing bath composed of an aqueous solution of an amide- based solvent, washed with water, heat-treated to produce a dense meta wholly aromatic polyamide yarn substantially not containing salts (inorganic ionic substance) in high productivity/economic efficiency. Such a meta wholly aromatic polyamide yarn having an ultimately low inorganic ion concentration preferably has characteristics not damaging electric characteristics, etc. when used as a substance for electron.
Patent JP-2002206948-A (JP)
Title: Displacement sensor
Inventor: NISHIMURA KUNITOSHI
IPC: G01B7/00
Filed: 2001-01-11
Abstract: PROBLEM TO BE SOLVED: To provide a displacement sensor being tough enough against environmental changes and capable of measuring an absolute value of displacement within a range of several mms, at a reproduction resolution of about several nms even in air, and its measuring method. SOLUTION: The displacement sensor includes a resonance circuit consisting of a capacitor and a coil, with at least one of the capacitor and the coil being varied correspondingly to displacement. If a phase change from the resonance circuit which occurs as a resonance frequency is shifted by application of an alternating current to the resonance circuit exceeds a predetermined range, the application frequency is increased or decreased by a predetermined value to keep the phase change within the predetermined range. The amount by which the frequency is increased or decreased correspondingly to the displacement and the amount of phase shift at the latest application frequency are measured and the displacement is determined from these measurements.
Patent JP-2002206765-A (JP)
Title: Multipurpose rain water storage tank operation assisting apparatus
Inventor: NAKAJIMA KANEMI
IPC: G06Q50/00
Filed: 2001-01-11
Abstract: PROBLEM TO BE SOLVED: To provide a multipurpose rain water storage tank assisting apparatus wherein heat supply matched to a demand is achieved by effectively utilizing rain water and unused energy in cities. SOLUTION: There are provided a rain water tank operation assisting apparatus in which there are calculated a supply amount of water to a residence zone and a feed amount of water to gray water tank when water is reused as the gray water based upon past weather data in an object zone, and operation and control for the middle water tank are executed; a gray water use amount prediction/calculation apparatus for predicting the amount of use of the gray water; a cold/hot water amount prediction/calculation apparatus for calculating temperature setting suitable for an application object of the gray water; a heat storage tank operation assisting/calculating apparatus in which a heat demand amount of each city is predicted, and a heat amount required for a heat storage tank is calculated for assisting the operation and control of the heat storage tank.  Consumed energy can thus be reduced by combining recycling of rain water in a residential area and heat supply utilizing unused energy in cities.
Patent JP-2002206483-A (JP)
Title: Compact diaphragm pump
Inventor: TAKANO KAZUHIKO
IPC: F04B45/04
Filed: 2001-01-11
Abstract: PROBLEM TO BE SOLVED: To provide a compact diaphragm pump which facilitates assembling, is improved in yield and capable of securing the predetermined suction performance, while having low the noise. SOLUTION: In this compact diaphragm pump 31, an intake valve 61 and an exhaust valve 62 are opened and closed for intake and exhaustion by vibrating a diaphragm 39 with the drive of a motor 32 to change the volume of an air chamber 51 adjacent to the diaphragm 39. A pair of blocks 49 and 63 for pinching the intake valve 61 and the exhaust valve 62 are provided, and the one block 49 is formed with a plurality of positioning parts 50 having a different shape from each other, and the other block 63 is formed with an engagement part 64 capable of being engaged with described each positioning part 50. The blocks 49 and 63 can be assembled correctly, by only engaging each positioning part 50 with an engagement part 64. Since assembling work is simplified, the yield is improved.
Patent JP-2001215361-A (JP)
Title: Optical fiber connector, installed attachably/detachably and adaptor combined therewith
Inventor: DE JONG MICHAEL
IPC: H02G1/14
Filed: 2001-01-12
Abstract: PROBLEM TO BE SOLVED: To provide a connector applicable to a fiber-to-the-desk. SOLUTION: The connector of this invention is provided with the main housing in which a passage goes through, a ferrule assembly attachable to the main housing, and a splicing member. The connector is further provided with a latch on at least one outer surface of the main housing and engaged with the corresponding structure of an adaptor sleeve by means of the latch.
Patent JP-2002215979-A (JP)
Title: Order receiving system and its program
Inventor: IMAI KAZUTAKA
IPC: G06F19/00
Filed: 2001-01-15
Abstract: PROBLEM TO BE SOLVED: To provide an order receiving system and its program capable of enhancing the efficiency of work for drawing up a long and thin strip and performing smooth delivery work. SOLUTION: This order receiving system is provided with a customer information input means 11 for inputting customer information containing the names of customers, long and thin strip information inputting means 11 for inputting the long and thin strip information containing the type of superscription and the type of paper strings tied in a ceremonial knot around the wrapper of a gift, and a non-fixed form long and thin strip printing means 12 for printing the input name of the customer and the input types of superscription and paper strings on white paper to make a long and thin strip.
Patent JP-2002216460-A (JP)
Title: Information recording medium
Inventor: IKEDA KO
IPC: H04N5/85
Filed: 2001-01-16
Abstract: PROBLEM TO BE SOLVED: To provide an information recording disk having reproduction path information with which simultaneous reproduction for a plurality of sequences can be specified. SOLUTION: The reproduction path information permits the specification of the reproduction timing of sequences and information which specifies the reproduction range of the sequences. Thereby, a plurality of sequences to be simultaneously reproduced can be specified in the same reproduction path. Besides, postrecording is realized by performing the simultaneous reproduction of voice sequences together with video sequences, and multi-angles or multi- views can be realized by simultaneously reproducing a plurality of video sequences in the same time zone. Since such a plurality of time-axis information can be set for each reproduction time-axis, it is possible to create play list information for reproducing video data in an arbitrary order by a method different from the prior art.
Patent JP-2002215317-A (JP)
Title: Display device integrated type position-detecting device
Inventor: KATSURADAIRA YUUJI
IPC: G06F3/041
Filed: 2001-01-16
Abstract: PROBLEM TO BE SOLVED: To provide a display device integrated type position-detecting device which is hardly affected by noise produced from a display device side, and stably detecting coordinate values. SOLUTION: A detection unavailable period, wherein the scanning position of a display device is overlapped to a predetermined noise mixing area centered on the indicated position of a position indicator at that time, is calculated on the basis of the time of one vertical scanning of the display device; the corresponding relationship between a display part and a position detecting part, and the indicated position of the position indicator at that time; the calculated detection unavailable period is compared with the passage time information from the time of generation of the vertical synchronization signal of the display device outputted from a time measuring circuit 22; and the position detecting operation is stopped, when they match each other, to exclude the coordinate values having possibility of being affected by the noise from the display device side.
Patent JP-2002214434-A (JP)
Title: Method for designing polarized light separating film, polarized light separating element with polarized light separating film by the method, polarized light converting element and projection display device
Inventor: ENDO YUKIHIRO
IPC: G02F1/13363
Filed: 2001-01-17
Abstract: PROBLEM TO BE SOLVED: To provide a method for designing a polarized light separating film for enhancing transmittance and reflectance, a polarized light separating element with a polarized light separating film designed by the method, a polarized light converting element with the polarized light separating element and a projection display device using the polarized light converting element. SOLUTION: In the method for designing a polarized light separating film 20 as a component of a polarized light separating element 330 for separating incident light into two sorts of polarized lights, the distribution of incident angle of light incident on the polarized light separating film 20 is obtained and the thickness of each layer of the film 20 is obtained according to the distribution. The polarized light separating element 330 is formed by incorporating the polarized light separating film 20 designed by the method.
Patent JP-2002211695-A (JP)
Title: Sparkling liquid delivering apparatus
Inventor: KONOSU NAOHIRO
IPC: A23L2/00
Filed: 2001-01-17
Abstract: PROBLEM TO BE SOLVED: To provide a sparkling liquid delivering apparatus which has a largely improved cooling performance so that a cooled drink can be continuously delivered in large quantities. SOLUTION: A flow passage forming member 30 is provided between the bottom part of an ice storage part 13 and the bottom part of a water tank 11 to ensure a flow passage in order that a cooling water 12 is caused to flow, as a second flow F2, through a gap B between the outer side of the storage part 13 and the inner wall surface of the tank 11.
Patent JP-2002211730-A (JP)
Title: Belt conveyor system
Inventor: OGASAWARA MITSUMASA
IPC: B65G21/14
Filed: 2001-01-19
Abstract: PROBLEM TO BE SOLVED: To contrive the rationalization and safety of a work by arranging a belt conveyor so as to approachable/separatable to/from a working face. SOLUTION: This system has a backup deck 1 to be a muck discharging position fixed at a prescribed position separated from the working face [A], a belt storage 5 which is arranged within the backup deck 1 and endlessly connects the conveyor belt 7 by winding in multiple between a plurality of rollers 6 and a roller 8 for movably supporting a tip part of the conveyor belt 7 delivered to a tip of the belt storage 5 and is provided with a belt conveyor truck 2 traveling movably toward the working face side within a pit. Delivery amount of the conveyor belt 7 can be elongated/contracted by elongating/ contracting a distance between the rollers 6 within the belt storage 5 according to the moving of the belt conveyor truck 2.
Patent JP-2002214810-A (JP)
Title: Electrophotographic photoreceptor, coating liquid for electric charge transport layer and method for producing the electrophotographic photoreceptor
Inventor: KURIHARA SHUNICHIRO
IPC: G03G5/05
Filed: 2001-01-23
Abstract: PROBLEM TO BE SOLVED: To provide an electrophotographic photoreceptor, having low friction between it and each member of a device, superior durability and superior electrical characteristics, and to provide a coating liquid for producing the photoreceptor. SOLUTION: In the electrophotographic photoreceptor, obtained by successively stacking an electric charge generating layer and an electric charge transport layer on an electrically conductive substrate, condensed polycyclic compound particles having a molecular weight of 150-1,000 are contained in the electric charge transport layer.