摘要:
An optical apparatus is provided with a lens unit movable in the direction of the optical axis thereof, a lens barrel, an electromagnetic coil coupled to one of the lens unit and the lens barrel, a driving unit having a magnetic material coupled to the other of the lens unit and the lens barrel, and a guide for slidably guiding the lens unit relative to the lens barrel.
摘要:
This specification discloses an optical apparatus provided with a lens unit movable in the direction of the optical axis thereof, a lens barrel, an electromagnetic coil coupled to one of the lens unit and the lens barrel, a driving unit having a magnetic material coupled to the other of the lens unit and the lens barrel, and a guide for slidably guiding the lens unit relative to the lens barrel.
摘要:
A position detecting device comprises a movable member, a first electrode movable with the movement of the movable member, and a second electrode disposed at a location opposed to the first electrode. The edge of at least one of the first and second electrodes are inclined with respect to the direction of movement of the first electrode, whereby the area over which the first electrode and the second electrode overlap each other is varied by the relative movement of the two electrodes and an electrostatic capacity provided by the two electrodes is also varied to make the detection of the absolute position of the movable member possible and to change a position detection accuracy in accordance with a position of the first electrode.
摘要:
A motor for driving a moving member with respect to a member which serves as a reference of the movement includes at least two first piezoelectric actuators for operating an operating portion thereof such that it is brought into contact with and is moved away from said member, and at least one second piezoelectric actuator operating such that it changes a distance between the plurality of first piezoelectric actuators. At least one of the plurality of first piezoelectric actuators employs a bimorph type piezoelectric element.
摘要:
An image reader for optically reading an image on an original and an image sensor unit for mounting to the image reader. The image sensor unit is provided with a shaft used for rotatably mounting the image sensor unit to an image sensor unit holding member of the image reader. This reduces the size of the image reader.
摘要:
A magnetic toner conveying apparatus for conveying magnetic toner, which may be used with an electrophotographic image forming apparatus, comprises a non-magnetic convey path member constituting a convey path for conveying the magnetic toner, a non-magnetic convey member arranged in the convey path member and adapted to convey the magnetic toner, and a magnetic force generating member provided on or in the convey path member.
摘要:
An image reading apparatus includes a drive unit that is mounted on a carriage having an image reading sensor, which is moved with respect to an original, mounted thereon and moves the carriage. The drive unit includes: a motor; a gear train for transmitting rotation of the motor so as to move the carriage; an encoder sensor for reading a code wheel fixed to a rotary shaft of the motor; and a support member for holding the motor. The encoder sensor is urged against a part of the support member by a resilient member, to be thus fixed to the support member.
摘要:
A scan guide upon image reading by an image reading apparatus having a driving mechanism constructed by a rack and a pinion gear is stably performed. The pinion gear is provided on a downstream side of two contact portions which are in contact with a guide rail of the reading scan. A straight line drawn in a pressure angle direction from a contact point of the rack and the pinion gear upon reading and scanning passes between the two contact portions with the guide rail, so that a stable positional relation between a driving force of the gear and the contact portions is obtained. The stable guiding can be performed.
摘要:
An image reading apparatus includes a drive unit that is mounted on a carriage having an image reading sensor, which is moved with respect to an original, mounted thereon and moves the carriage. The drive unit includes: a motor; a gear train for transmitting rotation of the motor so as to move the carriage; an encoder sensor for reading a code wheel fixed to a rotary shaft of the motor; and a support member for holding the motor. The encoder sensor is urged against a part of the support member by a resilient member, to be thus fixed to the support member.
摘要:
An image reading apparatus enabling a user to flexibly select one of plural reading modes, for example, for continuously reading two-sided images of stacked document sheets or reading pages of a book or a large document exceeding a platen. In a first reading mode, a reading unit scans a document and reads a document image. In a second reading mode, a stationary reading unit and the reading unit read an image of a document fed from a document feeder section. The reading unit is provided in a flatbed reading section which is detachable from an apparatus body. The flatbed reading section, when detached from the apparatus body, can be used as a flatbed scanner.