Sheet conveying device and image forming apparatus

Abstract

A sheet conveying device includes a blocking member having a blocking surface with which a leading end of a sheet that is being conveyed comes into contact for obliquity correction. The blocking member is rotated by being pushed by the sheet against an urging force of a positioning unit that positions the blocking member to be in the standby position. The blocking member is rotatable to be in a sheet-passage-allowing orientation in which the sheet is allowed to pass. When a trailing end of the sheet that is being conveyed has passed the blocking member, the blocking member that is in the sheet-passage-allowing orientation rotates in a same direction as a sheet conveyance direction and is positioned to be in a standby position.

1 . (canceled) 
     
     
         2 . A sheet conveying apparatus comprising:
 a first rotating member configured to be rotatable, wherein the first rotating member includes at least a first abutment portion and a second abutment portion, and wherein a sheet that is conveyed comes into contact with the first rotating member for obliquity correction;   a force applying member; and   a second rotating member that is rotatable, wherein the first rotating member and the second rotating member are configured to rotate integrally,   wherein the second rotating member includes a first force reception portion and a second force reception portion, wherein the first force reception portion receives a force for causing the first rotating member to rotate in a first rotation direction from the force applying member, and wherein the second force reception portion receives a force for causing the first rotating member to rotate in a second rotation direction that is opposite of the first rotation direction force applying member from the force applying member, and   wherein a force receiving part of the second rotating member receiving the force from the force applying member is switched from the second force reception portion to the first force reception portion in response to the first abutment portion being pushed by a leading edge of the sheet, thereby causing the first rotating member to rotate in the first rotation direction so that the second abutment portion moves along with the movement of a trailing edge of the sheet.   
     
     
         3 . The sheet conveying apparatus according to  claim 2 , further comprising a regulating member in contact with the second rotating member,
 wherein the regulating member is configured to urge the second rotating member with the force applying member,   wherein the second rotating member includes an engagement portion configured to engage with the regulating member, and   wherein, in a case where the regulating member engages with the engagement portion, the first abutment portion or the second abutment portion is retained in a standby position, which is a position for contact with the leading edge of the sheet.   
     
     
         4 . The sheet conveying apparatus according to  claim 3 , wherein, in a case where the first abutment portion of the first rotating member retained in the standby position is pushed by the leading edge of the sheet, the first rotating member rotates in the first rotation direction from the standby position, and the second force reception portion contacts with the regulating member. 
     
     
         5 . The sheet conveying apparatus according to  claim 4 , wherein, in a case where the first abutment portion is pushed by the leading edge of the sheet in a state that the second force reception portion abuts on the regulating member, the part of the second rotating member which abuts on the regulating member changes from the second force reception portion to the first force reception portion. 
     
     
         6 . The sheet conveying apparatus according to  claim 5 , further comprising a pressing member configured to support the regulating member about an axis and receive the force from the force applying member to press the second rotating member. 
     
     
         7 . The sheet conveying apparatus according to  claim 6 , wherein the pressing member is supported to be swingable. 
     
     
         8 . The sheet conveying apparatus according  claim 2 , further comprising a sensor configured to detect the sheet corresponding to a rotation of the first rotating member. 
     
     
         9 . The sheet conveying apparatus according  claim 2 , wherein the force applying member is a compression spring. 
     
     
         10 . The sheet conveying apparatus according to  claim 2 , further comprising a conveying portion configured to convey the sheet that is in contact with the first rotating member.