Patent ID: 9238560
Filing Date: 2016-01-19
CPC Classification: B65H,G03G,H04N

Claim Text:
1. A conveyance device comprising: a pair of conveyance members; a connection member that is connected to one of the pair of conveyance members to move one of the conveyance members relatively to other of the conveyance members in such a direction that the pair of conveyance members are contacted with each other or separated from each other; an operating member that is supported rotatably around a rotation shaft and that has a first engagement portion and a second engagement portion, the first engagement portion being able to be engaged with the connection member so as to bring the pair of conveyance members into contact with each other, the second engagement portion being arranged in a position where a phase of the second engagement portion is shifted from a phase of the first engagement portion by less than 180 degrees in a circumferential direction of the operating member, the second engagement portion being able to be engaged with the connection member so as to separate the pair of conveyance members from each other; a to-be-stopped member that is supported rotatably in conjunction with the operating member and that has a first to-be-stopped portion disposed correspondingly to the first engagement portion and a second to-be-stopped portion disposed correspondingly to the second engagement portion; a stopping member that can be engaged with each of the to-be-stopped portions to thereby stop rotation of the to-be-stopped member and that can be moved between an engagement position where the stopping member is engaged with each of the to-be-stopped portions to retain the position of the operating member and a release position where the stopping member is released from the engagement with each of the to-be-stopped portions; and a contact/separation control unit that controls the stopping member to thereby control contact/separation between the pair of conveyance members, and that moves the stopping member to the engagement position and rotates the operating member by a first rotation amount from the second engagement portion to the first engagement portion in a rotation direction, then moves the stopping member to the release position and rotates the operating member by a second rotation amount that is set in advance to be larger than a rotation amount from the first engagement portion to the second engagement portion, and then moves the stopping member to the engagement position and rotates the operating member by a third rotation amount that is obtained by subtracting the second rotation amount from a rotation amount corresponding to one turn.