Patent ID: 11889039
Assignee: RICOH COMPANY, LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. An image reading apparatus comprising:
a for-still-document contact glass configured to serve as a reading face for a placed document;
a for-moving-document contact glass configured to serve as a reading face for a document conveyed by an automatic document feeder; and
an optical scanner unit configured to move in a scanning range of the for-still-document contact glass back and forth in a sub-scanning direction to scan the document, the optical scanner unit being configured to move to a scanning range of the for-moving-document contact glass and scan the document in a static manner in response to the document being conveyed in an automatic manner, the optical scanner unit including a contact image sensor, a carriage holding the contact image sensor in a movable manner in the sub-scanning direction, a pair of end sliders on both ends of a plane facing the reading face in a longer-side direction of the optical scanner unit, and a pair of central sliders at a center of longer-side direction, the pair of central sliders being on both right and left sides of the contact image sensor in a moving direction of the optical scanner unit,
wherein, when the optical scanner unit is at a home position before scanning operation starts, one of the pair of central sliders is at a position overlapping with the for-still-document contact glass when viewed in a vertical direction of the optical scanner unit, and
wherein the pair of central sliders are displaced in a direction in which the pair of faces are pressurized in response to a pair of faces of the pair of central sliders facing the reading face being pressurized.