Patent ID: 8398074

Claim:
A sheet guide configured to guide a sheet in a predetermined direction, comprising: a base on which the sheet is placed; a pinion which is rotatably provided on the base; a pair of racks which are extended in a sliding direction perpendicular to the predetermined direction, which face each other sandwiching the pinion therebetween, which are engaged with the pinion to move opposite to each other in the sliding direction by rotation of the pinion, and each rack comprises one end portion and an other end portion in the sliding direction, and the pinion being positioned between the one end portion and the other end portion of each rack of the pair of racks in the sliding direction; a pair of positioning members which are provided at the one end portions of the pair of racks respectively, and which come closer and move away from each other by movement of the pair of racks to position the sheet in the sliding direction; a sliding guide which is formed in the base, which is slidably engaged with one end portion of each of the pair of racks to guide the pair of racks in the sliding direction; a pressing member which is provided on the base and which presses a portion of at least one rack of the racks to urge the at least one rack against the pinion, the portion being located between the other end portion of the at least one rack and an engage site of the at least one rack engaging with the pinion; and a supporting member which is positioned on the base and which is configured to support the other end portion of the at least one rack from a side of the at least one rack opposite to a side pressed by the pressing member, wherein the pinion is positioned between the supporting member and the positioning member which is positioned at the one end portion of the at least one rack in the sliding direction.