Matsushita Electric Industrial Co., Ltd.

Yasue Matsuya

Kenji Akami

Yasuo Kudoh

Hiroki Kusayanagi

Toshikuni Kojima

Chiharu Hayashi

Hiroshi Shimada

Sohji Tsuchiya

Tetsuya Kato

Yoshimasa Itoh

Shinichi Takano

Yasuo Kudo

A solid electrolytic capacitor including a valve metal positive electrode, an anodized layer formed on a surface of the positive electrode, a conductive polymer-containing negative electrode conductive layer, and a coupling agent layer and a surface active agent layer placed between the anodized layer and the negative electrode conductive layer.

Conductive composition precursor, conductive composition, solid electrolytic capacitor, and their manufacturing method

Method of manufacturing a conductive composition precursor prepared by dispersing or dissolving at least one additive having high dielectric layer repairing ability in conductive polymer solution, the conductive composition made by removing a medium or solvent from this composition precursor. The additive is at least one of &ldquo;phosphoric acid or phosphoric acid ester compounds&rdquo;, &ldquo;phenol or phenol derivatives&rdquo;, &ldquo;nitrobenzene derivatives&rdquo;, &ldquo;alkyl or naphthalene sulfonic acid anion&rdquo;, &ldquo;fluorocarbon surface active agent&rdquo; and &ldquo;fluorocarbon surface active agent and binder.&rdquo;

Method of manufacturing a conductive composition precursor prepared by dispersing or dissolving at least one additive having high dielectric layer repairing ability in conductive polymer solution, the conductive composition made by removing a medium or solvent from this composition precursor. The additive is at least one of &ldquo;phosphoric acid or phosphoric acid ester compounds&rdquo;, &ldquo;phenol or phenol derivatives&rdquo;, &ldquo;nitrobenzene derivatives&rdquo;, &ldquo;alkyl naphthalene sulfonic acid anion&rdquo;, &ldquo;fluorocarbon surface active agent&rdquo; and &ldquo;fluorocarbon surface active agent and binder.&rdquo;

The invention includes the steps of preparing a mixed solution containing a polymerizable monomer, an oxidant, and a solvent; immersing a capacitor element in the mixed solution; and heating the capacitor element immediately over the boiling point of the solvent, after taking out the capacitor element from the mixed solution, in order to evaporate the solvent and form a conductive polymer layer on the capacitor element; the heating is carried out at a rate capable of generating a force able to tear open the conductive polymer. This method provides a capacitor having a high capacitance attainment ratio, an excellent dissipation factor, and a superior impedance characteristic.

Method of making solid electrolyte capacitor having high capacitance

A solid electrolytic capacitor comprising comprises a pair of electrodes, and a dielectric film provided between the paired electrodes wherein at least one of the paired electrodes comprising a first conductive polymer layer which is made of a polymer of a member selected from the group consisting of pyrrole and derivatives thereof, the first conductive polymer layer being doped with a mixed dopant of a polyvalent anion and a monovalent anion consisting of a sulfonate ion dissociated from an anionic surface active agent. The conductive polymer layer may have a double-layered or a multi-layered structure wherein a second and/or third conductive polymer layer is made of a doped polymer of a thiophene derivative. A method for making the capacitors are also described.

Solid electrolytic capacitors comprising a conductive layer made of a polymer of pyrrole or its derivative and method for making the same

A solid electrolytic capacitor is composed of a pair of electrodes and a dielectric film therebetween, wherein one electrode includes a conducting polymer doped with a polyvalent anion and a monovalent anion. The conducting polymer layer may have a multi-layer structure wherein a second or third conductive polymer layer is made of doped thiophene or derivative thereof.

Solid electrolytic capacitors comprising a conductive layer made of a

An electrostatic image forming apparatus 1 comprises a sensitized drum 2 covered with a single, organic, photosensitive layer (OPC). This sensitized drum 2 is rotatable at a predetermined speed. A charging device 5 is disposed around the drum 2 for uniformly charging a surface of the OPC. A latent image forming device 6 is disposed downstream of the charging device 5 around the drum 2 for forming a latent image on the OPC. A developed image forming device 7 is disposed downstream of the latent image forming device 6 around the drum 2 for forming a developed image from the latent image. A distance from the charging device 5 to the latent image forming device 6 is defined with respect to a distance from the charging device 5 to the developed image forming device 7 by the following expression;

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Sagamihara, Japan

Yasue Matsuya