An electric power-steering device has a speed-reducing mechanism (17) for reducing the speed of an output shaft (16) of an electric motor (15). The speed-reducing mechanism (17) has an internal gear (39) engaged and rotated with the output shaft (16) and an external gear (40) with which the internal gear (39) internally meshes. A drive pulley (41) rotatable together with the external gear (40) and a driven pulley (42) provided so as to surround a steering shaft are connected by an endless belt (43). Speed reduction is obtained by the internal gear (39) and the external gear (40), and the speed-reducing mechanism (17) as a whole achieves a high reduction ratio without greatly reducing the diameter of the drive pulley (41).

Electric power-steering device

A plasma processing apparatus wherein a layer structure consisting of plural layers formed in stack one upon another on a semiconductor wafer placed on the sample holder located in the process chamber, is etched with plasma generated in the process chamber by supplying high frequency power to the electrode disposed in the sample holder, the apparatus comprising a ring-shaped electrode disposed above the electrode and around the periphery of the top portion of the sample holder, an outer circumferential ring of dielectric material disposed above the ring-shaped electrode and opposite to the plasma, and a power source for supplying power at different values to the ring-shaped electrode depending on the sorts of layers of the layer structure.

Plasma Processing Apparatus

When multilevel printing is performed by using a plurality of types of inks, which present different densities for similar colors when used for printing, and changing the types of inks and the numbers of ink droplets in printing each pixel, an ink distribution table which defines a combination of the types of inks and the numbers of ink droplets in correspondence with each gray level value is generated on the basis of input information associated with the relative densities of the respective inks. A combination to be used to print each pixel is selected on the basis of the ink distribution table, thereby printing a good grayscale image free from gray-level reversal and the like.

Ink-jet printing method and apparatus

The present invention is characterized in that: a demanded printing-job is accepted at a printing-job accepting unit, and a printing executing unit executes printing according to the accepted printing-job so as to produce an output sheet onto a discharge tray; an output-sheet detecting unit detects the presence of a printed output-sheet on the discharge tray; if the removal of discharged sheets from the discharge tray is detected, a printed-sheet mixture determining unit determines the possibility that sheets printed corresponding to a plurality of demands are mixed among the removed output-sheets; and if it is determined the possibility that sheets printed corresponding to a plurality of the demands are mixed among the output-sheets, warning information is produced by a warning voice producing unit.

Image-forming apparatus and image-forming method

An image-forming device has a plurality of cylindrical image-carrying members, and an optical scanning unit. The plurality of cylindrical image-carrying members is provided in a main casing for rotating about respective rotational axes. The rotational axes are parallel to one another and juxtaposed in a single direction. The optical scanning unit is provided in the main casing and has a plurality of laser generators, a single rotatable polygon mirror, a plurality of mirrors, and a plurality of lenses. The plurality of laser generators is provided one-to-one relationship to the plurality of image-carrying members to emit respective laser beams. The single rotatable polygon mirror deflects the respective laser beams to scan the respective image-carrying members therewith. The plurality of mirrors is provided one-to-one relationship to the plurality of image-carrying members to guide the respective laser beams along respective optical paths to the respective image-carrying members. The plurality of lenses is provided one-to-one relationship to the plurality of image-carrying members and provided in the respective optical paths and between the respective mirrors and the respective image-carrying members. Distances from the respective mirrors to the respective image-carrying members being equal to one another.

Image-forming device

PURPOSE:To classify and display developers in use by colors clearly by forming part of a unit provided attachably and detachably to and from a main body device as part of the outer package of the main device CONSTITUTION:The main body 4 of the image forming device includes a developing device unit 6 attachably and detachably to and from its front side and a notch which is in the same shape with and a little bit larger than the unit outer package cover 6a of the developing device unit 6 is formed in the front cover 5 of the main body 4, so that the developing device unit 6 is replaced independently without opening the front cover 5 Further, while the developing device unit 6 is loaded in the main body 4, the unit other package cover 6a forms part of the front cover 5 The unit outer package cover 6a is displayed in the same color with the toner of the developer charged in the developing device unit 6

Image forming device

PURPOSE:To constitute a small-sized, lightweight device at low cost by driving an optical scanning system through a wire, and winding the wire around a mutlistage pulley different in diameter corresponding to respective magnifications, and varying the scanning speed. CONSTITUTION:A linear cam 43 moves by the rotation of a motor 45. An actuator 19 is fitted to the reverse surface of the linear cam 43 and operates position sensors 25 and 26. The linear cam 44, a lens base 18, and a mirror base 11 stop at positions corresponding to selected copy magnification. The wire 39 is moved by the movement of a tension lever 32 which abuts on one cam surface of the linear cam 43, and a pin 20 provided to the lens base 18 slides in the groove part of a changeover arm 101 according to the movement of the lens base 18. A changeover lever 99 moves by the movement of the changeover arm 101 to switch speeds.

Shimanari Tatsumi

Papers

Image forming device

Variable speed driving device