An image reading apparatus includes a document tray on which a document is stacked; a conveyance unit configured to convey the document stacked on the document tray; a reader configured to read the image of the document conveyed by the conveyance unit using a sensor. The sensor includes a first light receiving element row having a plurality of light receiving elements, which receives light of a first color, arranged in a main scanning direction; and a second light receiving element row having a plurality of light receiving elements, which receives light of a second color, arranged in the main scanning direction, wherein the first light receiving element row and the second light receiving element row are arranged in a sub-scanning direction orthogonal to the main scanning direction. The image reading apparatus further includes a setting unit and a determination unit.

An image reading apparatus includes: a conveyance portion configured to convey a first medium; a first imaging portion; a first reading processing portion configured to cause the first imaging portion to read a first image of a first reading surface of the first medium conveyed by the conveyance portion; a second imaging portion; a second reading processing portion configured to cause the second imaging portion to read a second image of the second reading surface of the second medium by scanning while the second imaging portion is being moved along a second reading surface of a second medium placed on a medium placement surface; a reading control portion configured to control the first reading processing portion and the second reading processing portion to operate in parallel with each other; and a synthesis processing portion configured to generate a synthesized image by synthesizing the first image and the second image.

An image reading apparatus includes a document tray on which a document is stacked; a conveyance unit configured to convey the document stacked on the document tray; a reader configured to read the image of the document conveyed by the conveyance unit using a sensor. The sensor includes a first light receiving element row having a plurality of light receiving elements, which receives light of a first color, arranged in a main scanning direction; and a second light receiving element row having a plurality of light receiving elements, which receives light of a second color, arranged in the main scanning direction, wherein the first light receiving element row and the second light receiving element row are arranged in a sub-scanning direction orthogonal to the main scanning direction. The image reading apparatus further includes a setting unit and a determination unit.

A belt tensioning system is described, which comprises: a housing pivotable about a pivot point; a pulley supported by said housing, said pulley to rotate a belt and said pulley rotatable about an axis of rotation; a motor to drive the pulley; and a biasing element coupled to said housing and to apply a tension to said belt via said housing and said pulley; wherein operation of said motor to effect rotation of said pulley about said axis of rotation: in a first direction effects pivoting of said housing in a direction about said pivot point, which pivoting movement, in combination with said biasing element, effects translational movement of said axis of rotation of said pulley in a first translational direction to a first axis position to alter said tension in said belt; and in a second direction effects pivoting of said housing in an opposite direction about said pivot point, which pivoting movement, in combination with said biasing element, effects translational movement of said axis of rotation of said pulley in a second translational direction to a second axis position to alter said tension in said belt.

In accordance with an embodiment, a lens mirror array includes a plurality of optical elements integrally connected in a first direction. Each optical element includes an incident side lens surface through which light enters the optical element, a ridge located at an edge of the incident side lens surface, a reflection surface on which light incident on the incident side lens surface is reflected, an exit side lens surface through which light reflected by the reflection surface exits the optical element, and a groove surrounding the reflection surface except for a portion adjacent to the ridge, the portion adjacent to the ridge connecting to an adjacent optical element in the plurality of optical elements.

An image reading apparatus includes a main body that performs a scanning operation of sequentially reading a plurality of documents by a reading section that reads the plurality of documents and a document transport section that transports the plurality of documents to the reading section. The main body has a plurality of postures with different inclinations. The image reading apparatus includes a posture acquisition section that acquires posture information indicating the posture of the main body, and a controller that controls an operation of the document transport section. The controller interrupts the scanning operation when the posture indicated by the posture information is changed from a start of the scanning operation during the scanning operation.

An object of the present invention is to provide a printing apparatus including a scanner unit openable and closable with respect to a printer body unit for simultaneously achieving smooth opening/closing movement and the downsizing of the apparatus. The printing apparatus includes a first gear member provided in the printer body unit and a second gear member which is attached to the scanner unit so as to be swingable with respect to the scanner unit and which is in mesh with the first gear member. When the scanner unit opens or closes with respect to the printer body unit, the second gear member swings with respect to the scanner unit while retaining a meshing state with the first gear member.

An image reader wherein a controller executes: a start process of starting a reading operation; a head edge detection process of detecting a document width; a first side edge detection process of detecting a side edge until an occurrence of a first change from a side edge detecting state to a side edge non-detecting state; a calculation process of calculating a continuation distance based on the document width; a second side edge detection process of detecting the side edge until an occurrence of a second change from the non-detecting state to the detecting state; a third side edge detection process of detecting the side edge until an occurrence of the first change; and an end process of ending the reading operation when the second change does not occur in a continuation range in the second detection process or when the first change occurs in the third detection process.

An image reading apparatus including: a reading unit configured to read an image of an original in a main scanning direction; a housing configured to accommodate the reading unit; a guide member configured to guide a movement of the reading unit in a sub-scanning direction orthogonal to the main scanning direction; and a restricting member configured to restrict the movement of the reading unit in the sub-scanning direction and a movement of the reading unit in a vertical direction orthogonal to the main scanning direction and the sub-scanning direction.

An image forming apparatus including an optical scanning device that scans an object to be scanned with a beam in a main scanning direction includes a first rotation fulcrum unit and a second rotation fulcrum unit that are respectively provided in the optical scanning device on one side and on the other side in an orthogonal direction orthogonal to the main scanning direction. The first rotation fulcrum unit is provided outside a scanning area of the beam in the main scanning direction. The optical scanning device is provided rotatably around a virtual rotation axial line connecting the first rotation fulcrum unit and the second rotation fulcrum unit.