Abstract: A compressor includes: a compressor body that suctions and compresses a gas to be compressed; heat exchangers that circulate a cooled target inside the heat exchangers to cool the cooled target; a fan that is driven by a fan motor and that sends a cooling gas to the heat exchangers to remove heat; a temperature sensor that detects an initial cooling gas temperature that is a temperature of the cooling gas not having been subject to heat removing for the heat exchangers; and a control unit that is capable of setting an upper limit frequency that is an upper limit for controlling a rotational frequency of the fan motor. The control unit sets the upper limit frequency to a rotational frequency equal to or lower than a frequency at which current at an acceptable current level is supplied to the fan motor, at each of the initial cooling gas temperatures detected by the temperature sensor.

Abstract: The throughput of a serial printer is improved. A inkjet printer 100 has a print unit that prints on a print medium; a first transportation unit that conveys the print medium in the primary scanning direction; a second transportation unit that conveys the print unit in a secondary scanning direction substantially perpendicular to the primary scanning direction; and a control unit that controls the transportation operations of the first and second transportation units, so that the time required to move the print unit from the stop-printing position where the print unit finishes printing one print area to the start-printing position where transportation for printing the next print area starts is shortest. The control unit also determines a transportation range that may include the print unit going beyond the stop-printing position when the print unit prints the one print area.

Abstract: A production method for an optical disc master includes the steps of: preparing a substrate; forming an intermediate layer having a predetermined thickness on the substrate; forming an inorganic resist layer having a thickness on the intermediate layer, a ratio of the thickness of the intermediate layer to the thickness of the inorganic resist layer being in a range between 0.8:1 and 1.5:1; irradiating the inorganic resist layer with a laser beam to selectively expose the inorganic resist layer; and developing the selectively exposed inorganic resist layer.

Abstract: The throughput of a serial printer is improved. A inkjet printer 100 has a print unit that prints on a print medium; a first transportation unit that conveys the print medium in the primary scanning direction; a second transportation unit that conveys the print unit in a secondary scanning direction substantially perpendicular to the primary scanning direction; and a control unit that controls the transportation operations of the first and second transportation units, so that the time required to move the print unit from the stop-printing position where the print unit finishes printing one print area to the start-printing position where transportation for printing the next print area starts is shortest. The control unit also determines a transportation range that may include the print unit going beyond the stop-printing position when the print unit prints the one print area.

Abstract: A production method for an optical disc master includes the steps of: preparing a substrate; forming an intermediate layer having a predetermined thickness on the substrate; forming an inorganic resist layer having a thickness on the intermediate layer, a ratio of the thickness of the intermediate layer to the thickness of the inorganic resist layer being in a range between 0.8:1 and 1.5:1; irradiating the inorganic resist layer with a laser beam to selectively expose the inorganic resist layer; and developing the selectively exposed inorganic resist layer.

Abstract: A fixing apparatus for use in an image forming apparatus such as a copying apparatus or a laser beam printer is disclosed. The fixing apparatus has a heater, a rotatable member having the heater therein, and a pressing member forming a nip by coming into contact with the rotatable member. The rotatable member is provided with a core and an elastic layer formed on the core, and the elastic layer has a JIS-A Standard rubber hardness not more than 5.degree..

Abstract: A method for producing a vinyl chloride resin, which comprises suspension-polymerizing vinyl chloride, or a mixture of vinyl chloride with a co-monomer copolymerizable therewith, in an aqueous medium in the presence of an oil-soluble polymerization catalyst, a dispersant and an emulsifier by means of a homogenizer under an emulsifying pressure within a range of from 5 to 50 kg/cm.sup.2 in such a state that the organic phase is dispersed in the aqueous phase.