Fuji Xerox Co., Ltd.

Toru Ishii

Kiyokazu Mashimo

Akira Imai

Katsuhiro Sato

Hidekazu Hirose

Takeshi Agata

Mieko Seki

Daisuke Okuda

Hirohito Yoneyama

Tadayoshi Ozaki

Katsumi Nukada

Yohei Nishino

Fumio Ojima

Masakazu Iijima

Katsumi Daimon

Koji Horiba

Yasuo Sakaguchi

Tomoo Kobayashi

Tomozumi Uesaka

Kazuaki Sato

Yoshihiro Ohba

Masahiro Iwasaki

Hiroaki Moriyama

Yutaka Akasaki

Ryosaku Igarashi

Taketoshi Hoshizaki

Kazuyuki Nakamura

Ichiro Takegawa

Kazuo Yamasaki

Takahiro Suzuki

Ryojiro Akashi

Yoshiro Yamaguchi

Kazuhiro Koseki

Masayuki Nishikawa

Taketoshi Higashi

Akihiko Tokida

Michiaki Takahashi

Satsumi Daimon

A cleaning device includes a cleaning member that has a plate shape and cleans an outer circumference surface of a revolving cleaning target member with one end side of the cleaning member coming into contact with the outer circumference surface by removing adhering substances adhering to the outer circumference surface, and a detection mechanism that is attached to an end surface of the other end side of the cleaning member and detects vibration of the cleaning member.

Cleaning device having detection mechanism and image forming apparatus including same

Provided is a charging member contamination determining device including plural units that includes a charging member, a member to be charged and a measuring section that measures a discharging current value between the charging member and the member to be charged, a calculating section that calculates a difference between current values measured by two units among the plural units, and a determining section that determines the presence or absence of contamination in the charging member based on the difference between the current values for each combination of two units calculated by the calculating section.

Charging member contamination determining device

Provided is a cleaning device including a brush roll that removes residual toner remaining on a surface of a toner image carrier provided in an electrophotographic apparatus, and a pressure detector that contacts the surface of the brush roll with preload, and outputs a detected pressure value to a determination unit that is provided in the electrophotographic apparatus to determine the adhesion state of toner to the brush roll.

Cleaning device and electrophotographic apparatus

An organic electroluminescent device, having an organic compound layer including two or more layers including at least a buffer layer and an emitting layer, wherein at least one of the organic compound layers other than the buffer layer contains at least one charge-transporting polyester represented by Formula (I-1) or (I-2), and the buffer layer is formed in contact with an anode and contains a crosslinked compound formed by using at least one charge injection material containing a substituted silicon group and represented by Formula (III). 

Organic electroluminescent device and display device

An organic electroluminescence element includes a pair of electrodes composed of an anode and a cathode, at least one of which is transparent or semitransparent, and one or more organic compound layers disposed between the pair of electrodes, wherein at least one of the organic compound layers comprises at least one charge-transporting polyester consisting of repeating units containing, as a partial structure, at least one structure represented by the following formula (I-1). 

Organic electroluminescence element and display device

An organic electroluminescent device with a pair of electrodes having an anode and a cathode, and one or more organic compound layers disposed therebetween. One of the anode or the cathode is transparent or semitransparent. One of the organic compound layers includes a charge-transporting polyester having a repeating structure containing at least one structure selected from the structures represented by the following formulae as a partial structure:  

Thiophene-containing compound and thiophene-containing compound polymer, organic electroluminescent device, production method thereof, and image display medium

A thiophene-containing compound polymer represented by  

An organic electroluminescent device having a pair of electrodes including a positive electrode and a negative electrode at least one of which is transparent or translucent, and one or more organic compound layers interposed between the pair of electrodes, at least one layer of the organic compound layers containing at least one charge transporting polyester having a repeating unit that contains at least one structure selected from structures represented by the following formula (I-1) as a partial structure. 

Organic electroluminescent device, production method thereof, and image display medium

A method for producing a polymer organic electronic material comprising: synthesizing a polymer organic electronic material by condensing a precursor monomer for the polymer organic electronic material in the presence of a metal catalyst, preparing a polymer organic electronic material solution by dissolving the polymer organic electronic material in an organic solvent, and removing metal ions, which originate from the metal catalyst, from the polymer organic electronic material solution by using an ion exchange resin; a polymer organic electronic material which can be obtained by the method; and an organic electroluminescent device which uses the polymer organic electronic material.

Method for producing polymer organic electronic material, polymer organic electronic material, and organic electroluminescent device

Provided are a thiophene-containing compound represented by the following formula (X-1), and an organic electroluminescent device that includes a pair of electrodes and an organic compound layer disposed therebetween. The organic compound layer includes a charge-transporting polyester having a repeating structure containing at least one structure selected from the structures represented by the following formulae (I-1) and (I-2) as its partial structure. In formula (X-1), Arrepresents a substituted or unsubstituted monovalent aromatic group; and Rto Reach independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; and n' is an integer of 1 to 5. 

The present invention provides a thiophene-containing compound represented by Formula (I) and a thiophene-containing compound polymer using the thiophene-containing compound. In Formula (I), Arrepresents a substituted or unsubstituted monovalent aromatic group; X represents a divalent straight-chain hydrocarbon group having 1 to 6 carbon atoms, a divalent branched-chain hydrocarbon group having 2 to 10 carbon atoms, or a substituted or unsubstituted divalent aromatic group; Rto Reach independently represent a hydrogen atom, an alkyl group, a cyano group, a halogen group, a substituted amino group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group; 1 represents an integer from 1 to 5; and m and k each independently represent 0 or 1. 

Thiophene-containing compound and polymer thereof

An organic electroluminescent element having at least one pair of electrodes including an anode and a cathode, at least one of which having light transmissive, and at least one organic compound layer disposed between the electrodes, wherein the at least one organic compound layer contains at least one kind of non-conjugated polymer having terminal groups, and at least one of terminal groups of the non-conjugated polymer contains a fluorescent substance emitting fluorescence in a solid state.

Organic electroluminescent element

Disclosed is an organic electroluminescent element comprising at least one pair of electrodes comprising an anode and a cathode, at least one of which having light permeability, and one or a plurality of organic compound layers held between the electrodes, wherein at least one organic compound layer contains at least one kind of charge-transferable polyether comprising a repetition unit containing at least one partial structure selected from the group consisting of the following general formulae (I-1) and (I-2) 

The present invention provides an organic semiconductor transistor element that includes at least a source electrode, a drain electrode, an organic semiconductor formed to be electrically conductive to the source electrode and the drain electrode, and a gate electrode which is both insulated from the organic semiconductor and capable of applying an electric field. The organic semiconductor includes a polymer compound containing an aromatic tertiary amine.

Organic semiconductor transistor element, semiconductor device using the same, and process for producing the semiconductor device

The present invention provides a diamine compound polymer and a method for producing the diamine compound polymer. The diamine compound polymer of the present invention has a condensed aromatic group represented by the following formulae (1-1) and (1-2).  A represents a structure represented by the following formula (II-1). Y and Z represent divalent hydrocarbon groups. B and B' each independently represents a group represented by &#x2014;O&#x2014;(Y&#x2014;O)m-H or &#x2014;O&#x2014;(Y&#x2014;O)m-CO-Z-CO&#x2014;OR&#x2032;, wherein R&#x2032; is a hydrogen atom, an aralkyl group, an aryl group, or an aralkyl group. m represents an integer from 1 to 5; and p represents an integer from 5 to 5000.  Ar represents a monovalent aromatic group. X represents a divalent condensed aromatic group. T represents a divalent linear hydrocarbon group having 1 to 6 carbon atoms or a divalent branched hydrocarbon group having 2 to 10 carbon atoms. k and n each represents an integer of 0 or 1.

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Kanagawa, Japan

Toru Ishii