151results about How to "Reduce positional offset" patented technology

An ink jet printer has a line head having heating elements (121d) for ejecting ink droplets from nozzles, in which the plurality of heating elements (121d) are arrayed in a direction substantially perpendicular to the paper feed direction. In the line head, the plurality of heating elements (121d) are divided into a plurality of blocks, with each block consisting of a predetermined number of spatially arrayed heating elements of the plurality of heating elements (121d) corresponding to the plurality of nozzles, and a phase signal PH is sequentially supplied to a set of heating elements (121d) simultaneously driven over the respective blocks, thus sequentially driving the respective heating elements (121d) by each set as a unit in a time-divisional manner. Thus, the ink jet printer can reduce the positional shift of dots on the paper and can reduce the instantaneous maximum dissipation power in time-division drive.

In X-ray CT imaging for scanning a subject in the same anatomical region with two kinds of X-rays having different energy distributions, for the purpose of reducing a subject's positional offset between two kinds of tomographic images representing the same slice by a simple control scheme while reducing stress on the subject, a cardiac cycle identifying section 30b identifies a cardiac cycle of a subject 6 by an electrocardiograph 5 or the like, and a scan start time interval setting section 30c sets a time interval from the start of a first scan with first X-rays to the start of a second scan with second X-rays to a time approximately the same as the aforementioned cardiac cycle. A scan control section 30a controls several sections to keep a constant rotation speed of a rotating section 27 and start the scans at the aforementioned time interval. In each scan, projection data over a given view angle sufficient for reconstruction processing for a tomographic image are collected at once.

The present invention provides a liquid crystal device manufacturing method for reducing the position deviation of an optical shaft of a liquid crystal unit and an optical shaft of a polarization optical plate and a liquid crystal device. The liquid crystal device manufacturing method includes: a working procedure for preparing the liquid crystal unit having a liquid crystal layer clamped between an element substrate and a contraposition substrate which are opposite to each other, at least one position arranged at the element substrate, and a wire grating polariscope with polarized light separating function; a first working procedure, under the state of contraposition of a polarized light plate with the outer side of the element substrate of the liquid crystal unit, at least one of the liquid crystal unit and the polarized light plate rotates in the contraposition surface, for detecting the intensity of light which passes through a region arranged with wire grating polariscope of the liquid crystal unit and the polarized light plate; and a second working procedure, according to the detection result of the intensity of the light, for determining the position relationship of the polarized light plate relative to the wire grating polariscope in the opposite surfaces, and adhering the polarized light plate on the element substrate of the liquid crystal unit.

A multiphase superconducting cable connection structure includes a connection box accommodating three conductor connects connecting a superconductor of a cable core of each phase extracted from a pair of 3-phase superconducting cables, a solid insulation member fixed to an outer circumference of each conductor connect, and a metal flange fixing the solid insulation member to the connection box. By fixing the metal flange to the connection box (a refrigerant vessel), the conductor connect can be positioned and the conductor connector's movement caused as the cable core thermally contracts can be reduced. The structure can help to position the conductor connect in the connection box and reliably hold it at a prescribed position.

An image forming apparatus in which the intensity of a light beam used to form a latent image is switched in response to a change in resolution. A laser emits a light beam for forming a latent image on a photosensitive drum. A polygon mirror scans the emitted light beam. BD sensors detect the scanned beam. A timing controller selects the preferable timing from a storage device table according to the intensity of the light beam or the resolution when controlling the light emission timing of the lasers in response to a detection of timing of the detected light beam.