Fuji Xerox Co., Ltd.

Other

Toshio Mukai

Yutaka Akasaki

Katsuhiro Sato

Katsumi Nukada

Kaoru Torikoshi

Hiroyuki Tanaka

Akira Imai

Naoya Yabuuchi

Hidekazu Aonuma

Kazuya Hongo

Hidemi Suto

Teruumi Marumo

Akihiko Tokida

Tatsuro Ohki

Akihiko Tokita

Fumiaki Tambo

Touru Ishii

Yoshiro Yamashita

Ryojiro Akashi

Toru Ishii

Takanori Suzuki

Akinori Inoue

Tooru Ishii

Kiyokazu Mashimo

Tomoo Kobayashi

Kazuyuki Nakamura

Ichiro Takegawa

Susumu Honma

Kiroyuki Tanaka

Tokita

Hidemi Sudo

A resistive element is produced by forming a substrate glazed with glass, printing or coating a resistive element-forming paste onto the substrate, calcining the paste in a first heating step to form an element comprising a film on the substrate and subjecting the resulting element to a heat treatment in a second heating step to diffuse an amount of glass into the film to increase resistivity of the element.

Process for producing a resistive element by diffusing glass

A resistive element film-forming paste includes (1) an organic metal compound, (2) at least one organic non-metal additive, and (3) a solution of asphalt in a solvent. A resistive element is formed by coating the paste on a substrate followed by calcining.

Paste for resistive element film

An electrophotographic photoreceptor including a light-sensitive layer containing a bisazo or trisazo compound represented by formula (I-1), (II-1), (III,1), (IV-1), (V-1) or (VI-1): ##STR1##

Electrophotographic photoreceptors

An electrophotographic photoreceptor high in sensitivity and contrast potential after light irradiation is disclosed. The photoreceptor comprises an electroconductive substrate having thereon a photoconductive layer comprising a charge generating layer comprising a charge generating material, and a charge transporting layer comprising a charge transporting material, wherein the ionization potential IPg of the charge generating material is lower than the ionization potential IPt of the charge transporting material, the difference therebetween is 0.35 eV or less, and the difference between the ionization potential IPg1 of the charge generating layer and the ionization potential IPt1 of the charge transporting layer is within the range of -0.1 to +0.1 eV.

Electrophotographic photoreceptor

An electrophotographic photoreceptor comprising an electroconductive support having thereon a light-sensitive layer. At least the outermost layer of the light-sensitive layer contains (1) fine grains of at least one of a melamine-formaldehyde condensate and a benzoguanamine-formaldehyde condensate, and, as a binder resin, a polycarbonate resin comprising a constitutive unit represented by formula (II); or (2) fine grains of a benzoguanamine-melamine-formaldehyde condensate having an average grain size of from 0.03 to 4 .mu.m.

A resistive film-forming composition to be coated on a substrate and calcined to form a resistive film is disclosed, which contains an organic iridium compound selected from a compound represented by formula (I): ##STR1## wherein R.sup.1 represents a hydrogen atom, an alkyl group, or an alkoxy group, a compound represented by formula (II):

Resistive film-forming composition and electronic components using the

A phase separation liquid crystal polymer for displays, optical shutters and memories is disclosed, having on the side chains thereof at least one liquid crystal component and at least one non-liquid crystal component, said liquid crystal component and non-liquid crystal component being present in separate phases. The polymer has an increased degree of freedom in control of physical properties and exhibits improved resolving power, improved contrast, and improved rate of response.

Phase separation liquid crystal polymer

A process for producing monodispersed fine particles of a vinyl polymer is disclosed, which comprises polymerizing monomers containing at least one vinyl monomer selected from the group consisting of aromatic vinyl compounds, acrylic esters, and a methacrylic ester in the presence of (1) a surface active agent represented by formula (I) ##STR1## wherein R.sub.1 and R.sub.2, which may be the same or different, each represents a substituted or unsubstituted alkyl group having from 4 to 8 carbon atoms, a substituted or unsubstituted phenyl group, or a substituted or unsubstituted cyclohexyl group and M represents an alkali metal, (2) from 10.sup.-3 to 10.sup.-1 mol/l of a persulfate as a polymerization initiator, and (3) from 10.sup.-4 to 10.sup.-2 mol/l of a divalent metal sulfate as an electrolyte. Monodispersed vinyl polymer fine particles having a particle size of 1 .mu.m or greater with a very narrow size distribution are obtained.

Process for producing monodispersed vinyl polymer fine particles

A squarylium compound represented by formula (III) ##STR1## wherein R.sub.4 represents a hydrogen atom, a methyl group, or a fluorine atom.

Squarlylium compound

An optical modulation display device is disclosed, comprising a polymer matrix having dispersed therein a liquid crystal composition containing a photochromic compound as a constituting component, or comprising a photochromic polymer matrix having dispersed therein a liquid crystal composition. The display device provides a wide area and flexible display which can be driven without using a matrix addressing system.

Optical modulation display device and display method using the same

An electrophotographic photosensitive member has a charge-generating layer which includes selected photosensitive pigment particles and a compound which is a tetracyanoanthraquinodimethane compound, an anthraquinone compound, a dicyanovinyl compound, or a special quinone compound. The compound is incorporated in an amount in a range from 0.01 to 2 molar equivalents, preferably 0.1 to 1 molar equivalent, to the pigment, which has a positive hole transporting property. The photossensitive member has a charge-transporting layer and can also have a protective layer. The pigment is a phthalocyanine series pigment, a squearyrium series p igment, or a perylene series pigment. A process of using the photosensitive member includes reversal development and multicolor toner transfer. It is found that the process is adaptable to change in size of the transfer medium.

Electrophotographic photosensitive member and image forming process

An electrophotographic photoreceptor comprising a conductive support having thereon a photosensitive layer is disclosed, wherein a charge transport layer constituting said photosensitive layer or a protective layer formed on said photosensitive layer contains a charge transporting agent, said charge transporting agent being dissolved in a solid state or dispersed in a polycarbonate resin containing a monomer unit represented by formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom, a methyl group, a cyano group, or a phenyl group; R.sub.2 represents a methyl group, a cyano group, or a phenyl group; or R.sub.1 and R.sub.2 are connected to each other to form a 5- or 6-membered saturated ring; X represents a chlorine atom or a bromine atom; n represents an integer; and m represents 0 or an integer. The photoreceptor exhibits high sensitivity with low residual potential.

Electrophotographic photoreceptor with bromine or chlorine containing

An electrophotographic photosensitive member has a charge-generating layer which includes selected photosensitive pigment particles and a compound which is a tetracyanoanthraquinodimethane compound, an anthraquinone compound, a dicyanovinyl compound, or a special quinone compound. The compound is incorporated in an amount in a range from 0.01 to 2 molar equivalents, preferably 0.1 to 1 molar equivalent, to the pigment, which has a positive hole transporting property. The photosensitive member has a charge-transporting layer and can also have a protective layer. The pigment is a phthalocyanine series pigment, a squearyrium series pigment, or a perylene series pigment. A process of using the photosensitive member includes reversal development and multicolor toner transfer. It is found that the process is adaptable to change in size of the transfer medium.

Electrophotographic reverse image forming process

An electrophotographic photosensitive member has a charge-generating layer which includes selected photosensitive pigment particles and a compound which is a tetracyanoanthraquinodimethane compound, an anthraquinone compound, a dicyanovinyl compound, or a special quinone compound. The compound is incorporated in an amount in a range from 0.01 to 2 molar equivalents, preferably 0.1 to 1 molar equivalent, to the pigment, which has a positive hole transporting property. The photosensitive member has a charge-supporting layer and can also have a protective layer. The pigment is a phthalocyanine series pigment, a squearyrium series pigment, or a perylene series pigment. A process of using the photosensitive member includes reversal development and multicolor toner transfer. It is found that the process is adaptable to change in size of the transfer medium.

Growing community of inventors

Kanagawa, Japan

Yutaka Akasaki