Canon Kabushiki Kaisha

Asahi Glass Company, Limited

Renesas Electronics Corporation

Copyer Kabushiki Kaisha

Hideyuki Takahashi

Kenji Ishizeki

Masakazu Matsumoto

Shozo Ishikawa

Kazuharu Katagiri

Masataka Yamashita

Yoshio Takasu

Masaaki Hiro

Minoru Mabuchi

A power supply control apparatus includes a first adder configured to generate a difference signal based on a target value and a feedback signal; a compensator having a first transfer function Wc(z) and configured to generate a control signal based on the difference signal; a control target having a second transfer function Wp(z) and configured to output an output signal generated in response to the control signal; a disturbance canceller having a third transfer function {1+Wc(z)&#xb7;Wp(z)}/{Wc(z)&#xb7;Wp(z)} and configured to generate a disturbance cancelling signal based on the output signal corresponding to a control amount y; a second adder configured to generate a differential disturbance signal based on an output of the first adder and the disturbance cancelling signal; and a filter circuit which generates the feedback signal based on the differential disturbance signal.

Power supply control apparatus

A negative photosensitive resin composition comprising an alkali-soluble photosensitive resin (A) having acidic groups and having at least three ethylenic double bonds per molecule, an ink repellent (B) made of a polymer having polymerized units (b1) having a Cor lower alkyl group in which at least one of its hydrogen atoms is substituted by a fluorine atom (provided that the alkyl group may contain etheric oxygen), and polymerized units (b2) having an ethylenic double bond, and a photopolymerization initiator (C), wherein the fluorine content in the ink repellent (B) is from 5 to 25 mass %, and the proportion of the ink repellent (B) is from 0.01 to 20 mass %, based on the total solid content of the negative photosensitive resin composition. The negative photosensitive resin composition of the present invention is excellent in adhesion to a substrate, ink repellency and durability thereof and further excellent in alkali solubility and developability.

Negative photosensitive resin composition

A photosensitive resin composition comprising a resin (A1) having fluorine atom-containing groups, silicon atom-containing groups and ethylenic double bonds, a radical initiator (B) and an alkali-soluble photosensitive resin (D) having at least three ethylenic double bonds per molecule. Further, a photosensitive resin composition comprising a resin (A2) having fluorine atom-containing groups and ethylenic double bonds, a resin (A3) having silicon atom-containing groups and ethylenic double bonds, a radical initiator (B), and an alkali-soluble photosensitive resin (D) having at least three ethylenic double bonds per molecule.

Photosensitive resin composition and coating film cured product thereof

An electrophotographic photosensitive member comprises at least a charge generation layer and a charge transport layer on an electroconductive substrate, wherein said charge generation layer contains, as a binder, a polyvinylacetal resin obtained by acetalization reaction of polyvinyl alcohol and aldehyde compound represented by the following general formula:

Electrophotographic photosensitive member containing polyvinylarylal

An electrophotographic photosensitive member is provided which comprises a photosensitive layer containing a photoconductive pigment or dye dried according to freezing vacuum drying dispersed in a binder resin.

Electrophotographic photosensitive member and preparation of

A photoconductive film is formed by applying a dispersion liquid produced by mixing a solution of a binder resin in a first solvent of high compatibility with the binder resin containing a photoconductive organic pigment or dye with a second solvent having compatibility with the binder resin inferior to the first solvent. An electrophotographic photosensitive member having a photosensitive layer is formed by applying a dispersion liquid produced by mixing a solution of a binder resin in a first solvent of high compatibility with the binder resin containing a photoconductive organic pigment or dye with a second solvent having compatibility with the binder resin inferior to the first solvent. An electrophotographic photosensitive member having a charge generation layer and a charge transport layer is formed by applying a dispersion liquid produced by mixing a solution of a binder resin in a first solvent of high compatibility with the binder resin containing a photoconductive organic pigment or dye with a second solvent having compatibility with the binder resin inferior to the first solvent.

Method of making photoconductive film and electrophotographic

An electrophotographic photosensitive member characterized by containing at least one azo pigment represented by the following formula (1), (2), or (3): ##STR1## In these formulae; ##STR2## wherein Z represents ##STR3## in which R.sub.71 is hydrogen, or substituted or unsubstituted alkyl; n is 0 or 1; R.sub.21, R.sub.22, R.sub.61 and R.sub.62 represent hydrogen, alkyl, alkoxy, nitro, or hydroxyl R.sub.31 and R.sub.32 represent hydrogen or alkoxy; and R.sub.41, R.sub.42, R.sub.43, R.sub.44, R.sub.51, R.sub.52, R.sub.53 and R.sub.54 represent hydrogen, halogen, or organic monovalent residue. ##STR4## wherein X represents a residue necessary for completing an aromatic hydrocarbon ring or a heterocyclic ring, each ring being substituted or unsubstituted; R.sub.11 represents hydrogen or alkyl; R.sub.12 represents methyl, ethyl or C.sub.3 -C.sub.8 linear alkyl; and R.sub.17 and R.sub.18 represent alkyl, aralkyl or aryl, each substituted or unsubstituted. In formula (2), R.sub.11, R.sub.12 and X are as defined above; R.sub.13 and R.sub.14 represent hydrogen or cyano; and R.sub.15 and R.sub.16 represent hydrogen, halogen, alkyl, alkoxy, nitro or hydroxyl.

Disazo electrophotographic photosensitive member

An electrophotographic photosensitive member and use thereof, having a photosensitive layer upon or over an electrically conductive substrate, the photosensitive layer comprising an organic photoconductive material selected from the group consisting of the following general formula (1), (2), or (3): ##STR1## wherein A represents a coupler component having aromaticity, ##STR2## wherein, A represents a coupler component having aromaticity, R represents hydrogen, halogen, alkyl, or alkoxy, and n represents an integer of 1 to 4, ##STR3## wherein, A represents a coupler component having aromaticity and R.sub.1 represents a single bond or a substituted or unsubstituted divalent hydrocarbon or heterocyclic residue.

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Yokohama, Japan

Hideyuki Takahashi