Image reading apparatus
AssigneeCanon Kabushiki Kaisha
InventorsShigeru Kawasaki, Tsuyoshi Yoshida, Hiroyuki Takahara
Life of this patent
Estimating the term…
Abstract
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.
Claims11
An image reading apparatus comprising:
- a table having a surface, on which an original is placed;
- a carriage that has an image sensor mounted thereon and is moved in a scan direction being parallel to the surface and crossing a longitudinal direction of the image sensor;
- and
- a drive unit that is mounted on the carriage and moves the carriage,
- the drive unit including:
- 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,
- wherein the encoder sensor is urged against a part of the support member by a resilient member, to be thus fixed to the support member.
An image reading apparatus comprising:
- a table having a surface, on which an original is placed;
- a carriage that has an image sensor mounted thereon and is moved in a scan direction being parallel to the surface and crossing a longitudinal direction of the image sensor;
- and
- a drive unit that is mounted on the carriage and moves the carriage,
- the drive unit including:
- a motor;
- a gear train for transmitting rotation of the motor so as to move the carriage;
- an encoder sensor including a light source and a light receiving element, for reading a code wheel fixed to a rotary shaft of the motor;
- and
- a board having the encoder sensor and a connector, which is electrically connected to the encoder sensor and the motor, mounted thereon,
- wherein as the drive unit is viewed in a direction perpendicular to the surface, the motor, the gear train, the encoder sensor, and the board are intensively arranged on one side in the scan direction with respect to the image sensor.
Dependencies are inferred from the claim text.