Abstract: An optical unit with an image stabilization function includes a movable body having an annular holder for holding a camera module, a swing support mechanism for swingably supporting the movable body, and a fixing body for supporting the movable body with the swing support mechanism interposed between them. The holder includes three or more of a plurality of protrusions that project radially. The fixing body includes a plurality of arc surfaces that come into contact with each of the plurality of protrusions from the outer peripheral side. The swing support mechanism includes the plurality of protrusions and the plurality of arc surfaces. The arc surface is a concave curved surface obtained by transferring part of a virtual spherical surface centered on a preset swing center point.

Abstract: An optical assembly includes a movable body that includes an optical module, a frame body radially outward of the movable body, and support portions that swingably support the movable body with respect to the frame body. Each of the support portions includes a guide portion between the movable body and the frame body to support the movable body, and a preload portion that pushes the guide portion toward the movable body. A radially inner end portion of the preload portion is connected to a radially outer end portion of the guide portion. A radially outer end portion of the preload portion is supported by the frame body. One of the movable body and the guide portion includes a first convex surface, and the other includes a first concave surface in contact with the first convex surface.

Abstract: An optical unit with a shake correction function has a shake correction function for correcting a shake of an optical module. The optical unit with a shake correction function includes: a movable body including the optical module; a fixed body disposed outward of the movable body in a radial direction with respect to an optical axis of the optical module; and a support part disposed between the movable body and the fixed body in the radial direction and structured to support the movable body such that the movable body is swingable relative to the fixed body. The movable body and the support part or the support part and the fixed body have, in a pair, a swing mechanism structured to allow the movable body to swing relative to the fixed body. The swing mechanism includes a protruded spherical portion and a recessed spherical portion that is larger in radius of curvature than the protruded spherical portion.

Abstract: A sheet conveying device includes a detector configured to detect an attitude of a conveyance target medium, a corrector configured to perform a correcting operation based on a detection result of the detector, and circuitry configured to calculate an angular displacement correction amount and a lateral displacement correction amount of the conveyance target medium, cause the corrector to perform the correcting operation in a direction perpendicular to a sheet conveying direction, based on the lateral displacement correction amount, after the corrector grips the conveyance target medium, and cause the corrector to rotate by the angular displacement correction amount of the conveyance target medium before the corrector grips the conveyance target medium and to perform the correcting operation in a direction of rotation of the conveyance target medium, based on the angular displacement correction amount, after the corrector grips the conveyance target medium.

Abstract: A sheet conveying device includes a sheet conveyor, a guide, a rotary conveyor, a gripper, and an adjuster. The sheet conveyor is configured to convey a sheet. The guide is configured to guide the sheet conveyed by the sheet conveyor. The rotary conveyor is disposed downstream from the guide in a sheet conveyance direction. The gripper is mounted on the rotary conveyor, the gripper configured to grip a leading end of the sheet. The adjuster is configured to adjust a sheet entering range of the gripper to which the leading end of the sheet enters, along with conveyance of the sheet conveyor, in a direction intersecting a sheet surface.

Abstract: A sheet conveying device includes a detector configured to detect an attitude of a conveyance target medium, a corrector configured to perform a correcting operation based on a detection result of the detector, and circuitry configured to calculate an angular displacement correction amount and a lateral displacement correction amount of the conveyance target medium, cause the corrector to perform the correcting operation in a direction perpendicular to a sheet conveying direction, based on the lateral displacement correction amount, after the corrector grips the conveyance target medium, and cause the corrector to rotate by the angular displacement correction amount of the conveyance target medium before the corrector grips the conveyance target medium and to perform the correcting operation in a direction of rotation of the conveyance target medium, based on the angular displacement correction amount, after the corrector grips the conveyance target medium.

Abstract: A sheet conveying device includes a position detector configured to detect a position of a side end portion of a conveyance target medium, a position adjuster configured to move in at least one of a width direction of the conveyance target medium and a rotation direction of the conveyance target medium within a plane of sheet conveyance, while conveying the conveyance target medium, and adjust a position of the conveyance target medium, according to the position of the side end portion of the conveyance target medium detected by the position detector, a transfer rotary body disposed downstream from the position adjuster in a sheet conveying direction and having a receiver mounted on the rotary body to receive the conveyance target medium, and circuitry configured to change a rotation speed of the transfer rotary body according to the position of the conveyance target medium after adjusted by the position adjuster.

Abstract: An image forming apparatus, in which a method of correcting a positional deviation of a sheet is performed, includes a detecting device to detect a position of the sheet, a pair of sheet conveying bodies to convey the sheet and correct the positional deviation of the sheet, an image forming device to form an image on the sheet, and circuitry to calculate a first positional deviation amount of the sheet based on a first detection result of the detecting device, cause the pair of sheet conveying bodies to correct the positional deviation of the sheet based on the first positional deviation amount, calculate a second positional deviation amount of the sheet based on a second detection result of the detecting device, and cause the image forming device to correct the positional deviation of an image forming position on the sheet based on the second positional deviation amount.

Abstract: A sheet conveying device includable in an image forming apparatus that uses a method of conveying a conveyance target medium and a method of forming an image, includes a position detector, a position adjuster, and circuitry. The position detector is configured to detect a position of a conveyance target medium. Based on a detection of the position of the conveyance target medium by the position detector, the position adjuster moves in at least one of a width direction of the conveyance target medium and a rotation direction of the conveyance target medium within a plane of conveyance of the conveyance target medium and repeatedly adjusts the position of the conveyance target medium while conveying the conveyance target medium. The circuitry changes a conveying speed of the conveyance target medium, according to a change of the position of the conveyance target medium after adjusted by the position adjuster.

Abstract: A sheet conveying device, which is included in an image forming apparatus, includes a plurality of position detectors, a leading end detector, and a position adjuster. The plurality of position detectors is configured to detect a position of a sheet. The leading end detector is configured to detect a leading end of the sheet. The position adjuster is configured to, based on a detection result obtained by the plurality of position detectors, rotate in a rotation direction of the sheet within a plane of conveyance of the sheet to change the position of the sheet the position adjuster grips the sheet under conveyance to cause the leading end detector to rotate with the position adjuster in the rotation direction of the sheet within the plane of conveyance of the sheet.

Abstract: A driving device includes: a bending displacement member (1A), partially fixed, which is excited by electrical control to be bent and displaced; a bending displacement member (1B), partially fixed, which is excited by electrical control to be bent and displaced; an elastic member (2) joined to the bending displacement members (1A, 1B); a friction member (3), joined to the elastic member (2), which is capable of partially making contact with a body tube (4); and a camera module housing (6) capable of housing the bending displacement members (1A, 1B), the elastic member (2), and the body tube (4). The bending displacement members (1A, 1B) may be disposed along an inner wall of the camera module housing (6). The driving device may also include control means for exciting the bending displacement members (1A, 1B).

Abstract: The present invention relates to a driving unit capable of implementing a long stroke drive while achieving height reduction of the driving unit. The driving unit is provided with a driving mechanism for driving a driven body. The driving mechanism includes: a bendable displaceable member that is fixated at one end and, through electric control, bent and displaced at the other end; a driving direction-changing member changing a direction of the bending and displacement of the bendable displaceable member to a driving direction of the driven body, the driving direction of the driven body being perpendicular to the direction of the bendable displaceable member; a contact member frictionally engaged with the driving direction-changing member and driving the driven body; and a precompression member mounted in the driven body and precompressing the contact member towards the driving direction-changing member.

Abstract: In order to achieve a low-profile driving device, the driving device includes: a bending displacement member (1A), partially fixed, which is excited by electrical control to be bent and displaced; a bending displacement member (1B), partially fixed, which is excited by electrical control to be bent and displaced; an elastic member (2) joined to the bending displacement members (1A, 1B); a friction member (3), joined to the elastic member (2), which is capable of partially making contact with a body tube (4); and a camera module housing (6) capable of housing the bending displacement members (1A, 1B), the elastic member (2), and the body tube (4). The bending displacement members (1A, 1B) are disposed along an inner wall of the camera module housing (6).

Abstract: The present invention relates to a driving unit capable of implementing a long stroke drive while achieving height reduction of the driving unit. The driving unit is provided with a driving mechanism for driving a driven body. The driving mechanism includes: a bendable displaceable member that is fixated at one end and, through electric control, bent and displaced at the other end; a driving direction-changing member changing a direction of the bending and displacement of the bendable displaceable member to a driving direction of the driven body, the driving direction of the driven body being perpendicular to the direction of the bendable displaceable member; a contact member frictionally engaged with the driving direction-changing member and driving the driven body; and a precompression member mounted in the driven body and precompressing the contact member towards the driving direction-changing member.

Abstract: In order to provide a driving device that can be made more compact and shorter in height, a driving mechanism of a driving device according to the present invention includes: a flex movement member 1 that exhibits flex movement when excited by electronic control, and a first fixing member 14 for fixing a part of the flex movement member 1, both ends of which sandwich the part fixed by the fixing member 14 and bend. A first elastic member 12 and a second elastic member 22 are connected to the both ends of the flex movement member 1. The flex movement of the both ends of the flex movement member 1 causes distortion or bending in the first elastic member 12 and the second elastic member 22, so that a first frictional member 12 and a second frictional member 23 each serving as a contact section in contact with a lens barrel 5 move in a direction different from the flex movement direction of the both ends of the flex movement member 1. Thus, the lens barrel 5 is driven.