Abstract: Provided is a power conversion device with which a region in which an electronic component is mountable in a first printed wiring board of a first substrate can be enlarged. The power conversion device includes a power module installing member, a power module, a bus bar assembly, a first substrate provided on the bus bar assembly, and a second substrate provided on the bus bar assembly. The first substrate includes a first printed wiring board, and a signal terminal connector and a first board-to-board connection connector which are each provided on the first printed wiring board. The second substrate includes a second printed wiring board and a second board-to-board connection connector provided on the second printed wiring board. The signal terminal connector is connected to a signal terminal of the power module. The first board-to-board connection connector and the second board-to-board connection connector are connected to each other.

Abstract: Provided is a layer transfer film cartridge, such that even if the layer transfer film cartridge is heavy in weight, the installation and removal of the layer transfer film cartridge can be performed with ease. The layer transfer film cartridge includes a supply reel on which a multilayer film having a transfer layer and a supporting layer supporting the transfer layer is wound, a supply case that houses the supply reel, and a take-up reel on which to take up the multilayer film, and a first handle supported by the supply case or the supply reel.

Abstract: Using the dope containing the following cellulose acetate (1), (2), or (3), a film is prepared by the casting process: (1) a cellulose acetate having carboxyl groups binding to at least one member selected from the group consisting of a cellulose acetate and a hemicellulose acetate, wherein at least a part of said carboxyl groups are in an acidic form; (2) a cellulose acetate containing at least one member selected from the group consisting of an acid having an acid dissociation exponent pKa of 1.93 to 4.50 in water, an alkali metal salt of said acid and an alkaline earth metal of said acid; or (3) a cellulose acetate containing an alkali metal or an alkaline earth metal wherein the total content of an alkaline metal and an alkaline earth metal in 1 gram of the cellulose acetate is from an effective amount to 5.5×10?6 equivalent (in terms of ion equivalent). The above cellulose acetate is also useful for spinning process. The cellulose acetate includes a cellulose diacetate and a cellulose triacetate.

Abstract: Using the dope containing the following cellulose acetate (1), (2), or (3), a film is prepared by the casting process: (1) a cellulose acetate having carboxyl groups binding to at least one member selected from the group consisting of a cellulose acetate and a hemicellulose acetate, wherein at least a part of said carboxyl groups are in an acidic form; (2) a cellulose acetate containing at least one member selected from the group consisting of an acid having an acid dissociation exponent pKa of 1.93 to 4.50 in water, an alkali metal salt of said acid and an alkaline earth metal of said acid; or (3) a cellulose acetate containing an alkali metal or an alkaline earth metal wherein the total content of an alkaline metal and an alkaline earth metal in 1 gram of the cellulose acetate is from an effective amount to 5.5×10?6 equivalent (in terms of ion equivalent). The above cellulose acetate is also useful for spinning process. The cellulose acetate includes a cellulose diacetate and a cellulose triacetate.

Abstract: The present invention provides a cellulose ester composition, containing 1 to 99% by weight of cellulose triacetate prepared by substituting hydroxyl groups of cellulose with acetyl and having a degree of substitution with acetyl, DSace, which satisfies the relationship: 2.7.ltoreq.DSace.ltoreq.3.0, and 99 to 1% by weight of a mixed fatty acid ester of cellulose prepared by substituting hydroxyl groups of cellulose with acetyl and acyl groups having three or more carbon atoms and having degrees of substitution with acetyl and acyl groups having three or more carbon atoms, DSace and DSacyl, respectively, which satisfy the relationships: (I) 2.20.ltoreq.DSace.ltoreq.2.95, (II) 0.05.ltoreq.DSacyl.ltoreq.0.80 and (III) 2.60.ltoreq.DSace+DSacyl.ltoreq.3.00.