Roll support apparatus and recording apparatus

Abstract

The roll support apparatus includes: a holder portion for supporting a roll sheet through an attachment member, the holder portion being opened in an up direction of a vertical direction; a guide portion configured to move in a first direction apart from the holder portion and a second direction opposite to the first direction, the guide portion being configured to guide the roll sheet to the holder portion; and a turning member configured to turn about a turning shaft, the turning member being disposed such that the attachment member supported by the holder portion is located on a turning locus of the turning member, the turning member being configured to turn, in conjunction with movement of the guide portion in the first direction, in a direction to push the attachment member supported by the holder portion upward from below.

What is claimed is: 
     
         1 . A roll support apparatus for rotating a roll sheet, in which a sheet is wound, and supplying the sheet or winding the sheet, the roll support apparatus comprising:
 a holder portion for supporting a roll sheet through an attachment member attached to the roll sheet such that the roll sheet is rotatable, the holder portion being opened in an up direction of a vertical direction;   a guide portion configured to move in a first direction apart from the holder portion and a second direction opposite to the first direction, the guide portion being configured to guide the roll sheet to the holder portion; and   a turning member configured to turn about a turning shaft extending in parallel to an axial direction of the roll sheet, the turning member being disposed such that the attachment member supported by the holder portion is located on a turning locus of the turning member, the turning member being configured to turn, in conjunction with movement of the guide portion in the first direction, in a direction to push the attachment member supported by the holder portion upward from below.   
     
     
         2 . The roll support apparatus according to  claim 1 ,
 wherein the attachment member is attached to the roll sheet so as to protrude from both end portions of the roll sheet in the axial direction,   wherein the holder portion includes a first holder that supports a first end portion of the attachment member in the axial direction and a second holder that supports a second end portion of the attachment member in the axial direction on an opposite side to the first end portion, and   wherein the guide portion includes a first guide that supports the first end portion of the attachment member and a second guide that supports the second end portion of the attachment member.   
     
     
         3 . The roll support apparatus according to  claim 2 , wherein the turning member is disposed between the first holder and the first guide in the axial direction. 
     
     
         4 . The roll support apparatus according to  claim 3 , wherein, in a case where the turning member is a first turning member, the roll support apparatus includes a second turning member that is turnable about a turning shaft extending in parallel to the axial direction, the second turning member being disposed between the second holder and the second guide in the axial direction such that the attachment member supported by the holder portion is located on a turning locus of the second turning member. 
     
     
         5 . The roll support apparatus according to  claim 1 , further comprising a transfer portion that connects to an inner surface of the holder portion and has, thereon, a slant surface tilted downward gradually toward the first direction,
 wherein a support surface of the guide portion that supports the attachment member from below is located between a lowermost part and an uppermost part of the slant surface in the vertical direction.   
     
     
         6 . The roll support apparatus according to  claim 5 , wherein the guide portion has a guide groove formed by the support surface, a surface extending upward from an end of the support surface in the first direction, and a surface extending upward from an end of the support surface in the second direction. 
     
     
         7 . The roll support apparatus according to  claim 1 ,
 wherein the guide portion is configured to be movable between a first position that protrudes from an apparatus main body of the roll support apparatus in the first direction and a second position that is housed inside the apparatus main body, and   wherein the turning member is configured to be turnable between a first turning position that contacts the attachment member supported by the holder portion from below and a second turning position that turns from the first position in a direction of raising the attachment member supported by the holder portion.   
     
     
         8 . The roll support apparatus according to  claim 7 , further comprising a biasing member that biases the turning member in a direction of turning from the first turning position to the second turning position. 
     
     
         9 . The roll support apparatus according to  claim 7 ,
 wherein the guide portion has a protrusion extending in parallel to the axial direction, and in a case where the protrusion is viewed in the second direction, the protrusion being disposed at a position that overlaps the turning member located at the first turning position and does not overlap the turning member located at the second turning position, and   wherein, in a case where the guide portion is located at the second position, the protrusion is located on the second direction side relative to the turning member.   
     
     
         10 . The roll support apparatus according to  claim 9 , wherein, in a case of being viewed in the axial direction, a distance from a turning center of the turning member to a contact portion of contact between the turning member and the protrusion is larger than a distance from the turning center to a contact portion of contact between the turning member and the attachment member. 
     
     
         11 . The roll support apparatus according to  claim 7 , further comprising a sensor capable of detecting the turning member located at the second turning position,
 wherein, in a case where the sensor detects the turning member, the roll support apparatus determines that a roll sheet is not set at the holder portion.   
     
     
         12 . The roll support apparatus according to  claim 1 , wherein the turning member includes a roller that is capable of rotating about a rotating axis in the axial direction and that contacts the attachment member supported by the holder portion. 
     
     
         13 . The roll support apparatus according to  claim 1 , further comprising a contact member capable of turning between a contact position that contacts the attachment member supported by the holder portion from above and a separate position that is separated from the attachment member supported by the holder portion,
 wherein the contact member turns from the contact position to the separate position in conjunction with movement of the guide portion in the first direction.   
     
     
         14 . The roll support apparatus according to  claim 13 , further comprising:
 a lock member capable of turning between a lock position at which the lock member contacts the contact member located at the contact position from above to lock a position of the contact member and a non-lock position that permits movement of the contact member from the contact position to the separate position; and   a biasing member that biases the contact member in a direction in which the contact member turns from the contact position to the separate position,   wherein the lock member moves from the lock position to the non-lock position in conjunction with movement of the guide portion in the first direction.   
     
     
         15 . The roll support apparatus according to  claim 14 ,
 wherein the guide portion includes a contact portion,   wherein the lock member has a contacted portion that extends in parallel to the axial direction, and in a case of being viewed in the second direction, the contacted portion is disposed at a position that overlaps the contact portion in a state where the lock member is located at the lock position and does not overlap the contact portion in a state where the lock member is located at the non-lock position, and   wherein, in conjunction with movement of the guide portion in the first direction, the contact portion contacts the contacted portion and the lock member moves from the lock position to the non-lock position.   
     
     
         16 . The roll support apparatus according to  claim 7 , further comprising a biasing mechanism that biases the guide portion located at the first position in the first direction and biases the guide portion located at the second position in the second direction. 
     
     
         17 . The roll support apparatus according to  claim 16 ,
 wherein the guide portion has a protruding portion that is convex in the axial direction, the protruding portion having a first slant surface whose protruding amount becomes gradually greater in the second direction and a second slant surface whose protruding amount becomes gradually smaller in the second direction,   wherein the biasing mechanism includes: a rotating member that is driven to rotate while contacting the protruding portion; a holding member that rotatably holds the rotating member; and a biasing member that biases the holding member toward the protruding portion in the axial direction, and   wherein the rotating member contacts the second slant surface in a case where the guide portion is located at the first position, and contacts the first slant surface in a case where the guide portion is located at the second position.   
     
     
         18 . The roll support apparatus according to  claim 17 , wherein the protruding portion includes a connection surface that connects the first slant surface and the second slant surface and extends in parallel to the first direction. 
     
     
         19 . A recording apparatus, comprising:
 a roll support apparatus for rotating a roll sheet, in which a sheet is wound, and supplying the sheet or winding the sheet, the roll support apparatus comprising
 a holder portion for supporting a roll sheet through an attachment member attached to the roll sheet such that the roll sheet is rotatable, the holder portion being opened in a first direction orthogonal to an axial direction of the supported roll sheet and in an up direction of a vertical direction, 
 a guide portion capable of moving in the first direction and a second direction opposite to the first direction, the guide portion being configured to support the roll sheet and guide the roll sheet in the second direction toward the holder portion, and 
 a turning member capable of turning about a turning shaft extending in parallel to the axial direction, the turning member being disposed such that the attachment member supported by the holder portion is located on a turning locus of the turning member, the turning member being configured to turn, in conjunction with movement of the guide portion in the first direction, in a direction to push the attachment member supported by the holder portion upward from below; and 
   a recording portion for recording an image on a sheet fed from the roll support apparatus.   
     
     
         20 . A recording apparatus, comprising:
 a recording portion for recording an image on a sheet; and   a roll support apparatus for winding a sheet having an image recorded thereon,   the roll support apparatus comprising
 a holder portion for supporting a roll sheet through an attachment member attached to the roll sheet such that the roll sheet is rotatable, the holder portion being opened in a first direction orthogonal to an axial direction of the supported roll sheet and in an up direction of a vertical direction, 
 a guide portion capable of moving in the first direction and a second direction opposite to the first direction, the guide portion being configured to support the roll sheet and guide the roll sheet in the second direction toward the holder portion, and 
 a turning member capable of turning about a turning shaft extending in parallel to the axial direction, the turning member being disposed such that the attachment member supported by the holder portion is located on a turning locus of the turning member, the turning member being configured to turn, in conjunction with movement of the guide portion in the first direction, in a direction to push the attachment member supported by the holder portion upward from below.