Abstract: A gas expander includes a scroll casing, an impeller accommodated in the scroll casing and rotationally driven to a first side in a circumferential direction around a central axis by the gas flowing while expanding from an outside to an inside in a radial direction, a diffuser disposed on a first side in an axial direction with respect to the scroll casing and forming a flow path of the gas discharged from the impeller to the first side in the axial direction and swirling to the first side in the circumferential direction, and a vortex preventer provided in the diffuser, in which the vortex preventer includes a profile rectifying blade portion, which is curved or inclined to a second side in the circumferential direction from the first side toward a second side in the axial direction, at least in a portion of the second side in the axial direction.

Abstract: A gas expander includes a scroll casing, an impeller accommodated in the scroll casing and rotationally driven to a first side in a circumferential direction around a central axis by the gas flowing while expanding from an outside to an inside in a radial direction, a diffuser disposed on a first side in an axial direction with respect to the scroll casing and forming a flow path of the gas discharged from the impeller to the first side in the axial direction and swirling to the first side in the circumferential direction, and a vortex preventer provided in the diffuser, in which the vortex preventer includes a profile rectifying blade portion, which is curved or inclined to a second side in the circumferential direction from the first side toward a second side in the axial direction, at least in a portion of the second side in the axial direction.

Abstract: A technique for distributed printing that ensures favorable operability within a sufficiently short time. The procedure first generates intermediate print data and executes the parallel rendering process by time sharing to sequentially convert page data on the first page of the intermediate print data into data adequate for the printers. Transmission of final print data converted for the first printer is carried out in parallel with the rendering process for the second printer. In a similar manner, transmission of converted final print data to the second printer and third printers is carried out in parallel with the rendering process for the next printer. The parallel rendering process sequentially converts page data on the second page of the intermediate print data into data adequate for the printers. Subsequently, the parallel rendering process sequentially converts page data on the third page of the intermediate print data into data adequate for the printers.

Abstract: A technique for distributed printing that ensures favorable operability within a sufficiently short time. The procedure first generates intermediate print data and executes the parallel rendering process by time sharing to sequentially convert page data on the first page of the intermediate print data into data adequate for the printers. Transmission of final print data converted for the first printer is carried out in parallel with the rendering process for the second printer. In a similar manner, transmission of converted final print data to the second printer and third printers is carried out in parallel with the rendering process for the next printer. The parallel rendering process sequentially converts page data on the second page of the intermediate print data into data adequate for the printers. Subsequently, the parallel rendering process sequentially converts page data on the third page of the intermediate print data into data adequate for the printers.

Abstract: A technique for carrying out distributed printing from a general-purpose application program. An application program generates print data and issues a print command. A virtual printer driver receives the print command and returns performance information with regard to performances of a virtual printer to the application program. The application program converts print data into data suitable for the virtual printer based on the performance information and transmits the converted print data to the virtual printer driver. The virtual printer driver stores the input print data in the form of an intermediate print file into an HDD. A distributed printing utility reads the intermediate print file, allocates intermediate print data in the intermediate print file to respective printers according to a distributed form set in a dialog box, and outputs the print data in a distributive manner to real printer drivers provided for the respective printers based on the allocation.

Abstract: The technique of the present invention ensures distributed printing with a favorable operatability within a sufficiently short time.

Abstract: The technique of the present invention enables distributed printing to be carried out from a general-purpose application program with favorable operatability.