Patent ID: 8277018
Filing Date: 2012-10-02
Classification: B41J,G07G,H04N,Y10T

Abstract:
1. A tilt angle maintaining apparatus for maintaining a tilt angle of a tilt section, comprising: a tilt section which is rotatably provided with respect to a device body; a guide member which is slidably provided with respect to the device body and engaged with the tilt section to maintain an attitude of the tilt section; a lock member which is provided in the device body in a reciprocating manner with respect to the guide member, and advances with respect to the guide member to lock a sliding operation of the guide member; and a lever member which is slidably provided with respect to the guide member and provided to engage with the lock member, and which displaces the lock member in a direction moving away from the guide member by sliding from a lock position to an unlocked position, wherein a first ratchet claw and a second ratchet claw are formed on the lock member, wherein a plurality of first ratchet recesses for being fitted to the first ratchet claw is provided on the guide member along a sliding direction of the guide member, wherein a plurality of second ratchet recesses for being fitted to the second ratchet claw is provided on the lever member along a sliding direction of the guide member, wherein when the lever member is in the lock position, an arrangement relationship is formed in which the first ratchet recess and the second ratchet recess can be fitted to the first ratchet claw and the second ratchet claw, respectively, wherein when the lever member is displaced from the lock position to the unlocked position, a slope surface of the second ratchet recess presses the second ratchet claw upward so that the lock member is displaced in a direction moving away from the guide member, and wherein when the lever member is in the unlocked position, the first ratchet recess and the second ratchet recess are continuously formed along a sliding direction of the guide member arranged in an relationship in which at least one of the first ratchet recess and the second ratchet recess does not face the first ratchet claw in the case of the first ratchet recess or the second ratchet claw in the case of the second ratchet recess.