| Patent application number | Description | Published |
|---|
| 20080226312 | ACTUATOR, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS - An actuator includes: a first vibration system including a driving member having a frame shape, and a pair of first axial members each one end of which supports the driving member so as to allow the driving member to rotate about an X-axis; a second vibration system including a movable plate provided inside the driving member, and a pair of second axial members each one end of which supports the movable plate so as to allow the movable plate to rotate about a Y-axis perpendicular to the X-axis; a driving unit including a ferromagnetic member, a coil acting a magnetic field on the ferromagnetic member and a voltage applying unit applying a voltage to the coil, either one of the ferromagnetic member and the coil being disposed at a position on the driving member apart from each of the X and Y axes in a plan view of the movable plate; and a positioning portion that is disposed to the driving member and determine a fixing position of the ferromagnetic member or the coil with respect to the driving member. The movable plate rotates about each of the X and Y-axes by the voltage applying unit applying a voltage to the coil. | 09-18-2008 |
| 20090262409 | ACTUATOR, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS - An actuator includes: a first vibration system including a driving member having a frame shape, and a pair of first axial members each one end of which supports the driving member so as to allow the driving member to rotate about an X-axis; a second vibration system including a movable plate provided inside the driving member, and a pair of second axial members each one end of which supports the movable plate so as to allow the movable plate to rotate about a Y-axis perpendicular to the X-axis; a driving unit including a ferromagnetic member, a coil generating a magnetic field on the ferromagnetic; and a positioning portion that places the ferromagnetic member or the coil symmetrical with respect to an intersection point of the X and Y-axes. | 10-22-2009 |
| 20100118368 | LIGHT SCANNING DEVICE AND IMAGE FORMING DEVICE - A light scanning device includes a light source outputting a laser beam, a light deflecting unit having a light reflecting unit, the light deflecting unit being adapted to be rotatable about a predetermined axis and scanning an object with the laser beam reflected by the light reflecting unit, a drive controlling unit controlling a deflection angle variation in a vertical direction of the light deflecting unit per unit time so that an interval between scanning lines in the vertical direction by the light deflecting unit is constant, and a driving unit rotationally driving the light deflecting unit in accordance with an rotational angle determined by the driving controlling unit. | 05-13-2010 |
| 20100245962 | OPTICAL DEVICE, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS - An optical device includes: a movable plate disposed in a distribution range of light input from outside, and having a light reflecting surface adapted to reflect the light; a shaft member adapted to support the movable plate so that the movable plate can swing around a predetermined axis; a ferromagnetic member provided to the movable plate; and a drive section configured to generate electromagnetic force between the drive section and the ferromagnetic member to thereby swing the movable plate, wherein a portion of the drive section, included in the distribution range of the light, is formed of a surface having a normal vector with which the light is reflected to outside of a predetermined range. | 09-30-2010 |
| 20100265556 | ACTUATOR, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS - An actuator includes: a first vibration system including a driving member having a frame shape, and a pair of first axial members each one end of which supports the driving member so as to allow the driving member to rotate about an X-axis; a second vibration system including a movable plate provided inside the driving member, and a pair of second axial members each one end of which supports the movable plate so as to allow the movable plate to rotate about a Y-axis perpendicular to the X-axis; a driving unit including a ferromagnetic member, a coil generating a magnetic field on the ferromagnetic; and a positioning portion that places the ferromagnetic member or the coil symmetrical with respect to an intersection point of the X and Y-axes. | 10-21-2010 |
| 20110038023 | OPTICAL DEVICE, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS - An optical device includes: a movable plate disposed in a distribution range of light input from outside, and having a light reflecting surface adapted to reflect the light; a shaft member adapted to support the movable plate so that the movable plate can swing around a predetermined axis; a permanent magnet associated with the movable plate; and a coil generating an electromagnetic force to swing the movable plate. An upper surface of the coil is opposite to the permanent magnet, and the upper surface of the coil is formed as a plane having a predetermined angle with respect to a plane parallel to the movable plate | 02-17-2011 |
| 20110205611 | LIGHT SCANNING DEVICE AND IMAGE FORMING DEVICE - A light scanning device includes a light source outputting a laser beam, a light deflecting unit having a light reflecting unit, the light deflecting unit being adapted to be rotatable about a predetermined axis and scanning an object with the laser beam reflected by the light reflecting unit, a drive controlling unit controlling a deflection angle variation in a vertical direction of the light deflecting unit per unit time so that an interval between scanning lines in the vertical direction by the light deflecting unit is constant, and a driving unit rotationally driving the light deflecting unit in accordance with an rotational angle determined by the driving controlling unit. | 08-25-2011 |
| 20110310453 | OPTICAL DEVICE, OPTICAL SCANNER, AND IMAGE FORMING APPARATUS - An optical device includes: a movable plate disposed in a distribution range of light input from outside, and having alight reflecting surface adapted to reflect the light; a shaft member adapted to support the movable plate so that the movable plate can swing around a predetermined axis; a ferromagnetic member provided to the movable plate; and a drive section configured to generate electromagnetic force between the drive section and the ferromagnetic member to thereby swing the movable plate, wherein a portion of the drive section, included in the distribution range of the light, is formed of a surface having a normal vector with which the light is reflected to outside of a predetermined range. | 12-22-2011 |
