Patent ID: 7869103

Claim:
An image reading device configured to read an image formed on a document being fed, comprising: a cover portion configured to cover an interior of a main body when closed, wherein the main body is separate from the cover portion, and wherein the cover portion is further configured to provide access to the interior of the main body when open, the cover portion including: a document holder at least partially overlaying a surface of an image reading unit when the cover portion is closed, wherein the document holder is configured to hold the document being fed between the image reading unit and the document holder, and wherein the document holder is immovable relative to the cover portion; and the main body rotatably attached to the cover portion, the main body including: the image reading unit configured to read the image formed on the document and to be immovable along a document feeding path, a supporting mechanism supporting the image reading unit and configured to be movable toward the document holder, wherein a holding part of the supporting mechanism is held by a holder attached to the image reading unit and wherein an engaging part protrudes from the holder, a biasing unit configured to bias the image reading unit toward the document holder, and an engaged part coupled to the main body of the image reading device, wherein the engaged part is configured to restrict a rotating position of the image reading unit by engaging the engaging part when the document holder is open and apart from the image reading unit, wherein the engaging part includes an elastic arm part provided to the holder to adjoin a wall of a frame receiving part situated on a downstream side in a document feeding direction, and wherein the elastic arm part includes an inclined face capable of making contact with the engaged part and a regulating face capable of engaging with the engaged part to restrict the rotating position of the image reading unit, and wherein the engaued part includes an arm attached to and extending vertically upward from the main body and a hook-like structure extending substantially horizontally from a top portion of the arm, wherein the hook-like structure engages the regulating face of the engaging part.