Paper Feed Cartridge

Abstract

This paper feed cartridge includes a paper storage member for storing papers supplied to an image generating apparatus and a paper push-up member provided on the bottom of the paper storage member for receiving the papers thereon and pushing up the papers to a position for coming into contact with a paper feed roller provided on a paper supply port of the image generating apparatus, while the paper push-up member integrally includes a notched or hole-shaped relief portion for preventing the paper push-up member from coming into contact with the paper feed roller when rotating in a paper push-up direction.

1 . A paper feed cartridge comprising:
 a paper storage member for storing papers supplied to an image generating apparatus; and   a paper push-up member provided on the bottom of said paper storage member for receiving said papers thereon and pushing up said papers to a position for coming into contact with a paper feed roller provided on a paper supply port of said image generating apparatus, wherein   said paper push-up member integrally includes a notched or hole-shaped relief portion for preventing said paper push-up member from coming into contact with said paper feed roller when rotating in a paper push-up direction.   
   
   
       2 . The paper feed cartridge according to  claim 1 , wherein
 an end of said relief portion of said paper push-up member opposite to a paper feed direction is arranged between the axis of said paper feed roller of said image generating apparatus and the outermost peripheral portion of said paper feed roller opposite to said paper feed direction in plan view.   
   
   
       3 . The paper feed cartridge according to  claim 1 , wherein
 said paper push-up member further integrally includes a protrusion for further pushing up said papers on a surface opposite to the surface receiving said papers.   
   
   
       4 . The paper feed cartridge according to  claim 1 , wherein
 said paper push-up member further integrally includes an engaging portion provided on an end opposite to said relief portion for rotatably engaging with said paper storage member.   
   
   
       5 . The paper feed cartridge according to  claim 1 , wherein
 both ends of said relief portion in a direction perpendicular to said paper feed direction are substantially parallel to a side end surface of said paper feed roller.   
   
   
       6 . The paper feed cartridge according to  claim 1 , wherein
 the length of said relief portion in a direction perpendicular to said paper feed direction is larger than the length of said paper feed roller in said direction perpendicular to said paper feed direction.   
   
   
       7 . The paper feed cartridge according to  claim 1 , wherein
 an end of said relief portion opposite to said paper feed direction is so formed as not to come into contact with said paper feed roller when said paper push-up member is pushed up in a push-up direction in a state receiving no said papers thereon.   
   
   
       8 . The paper feed cartridge according to  claim 1 , wherein
 said relief portion is hole-shaped, and   an end of said hole-shaped relief portion in a paper feed direction is arranged between the axis of said paper feed roller and the outermost peripheral portion of said paper feed roller in said paper feed direction in plan view.   
   
   
       9 . The paper feed cartridge according to  claim 7 , wherein
 said paper feed roller is substantially rectangularly formed in plan view, and   said hole-shaped relief portion is also substantially rectangularly formed in plan view.   
   
   
       10 . The paper feed cartridge according to  claim 8 , wherein
 ends of said hole-shaped relief portion in said paper feed direction and a direction opposite to said paper feed direction are so formed as not to come into contact with said paper feed roller when said paper push-up member is pushed up in a push-up direction in a state receiving no said papers thereon.   
   
   
       11 . A paper feed cartridge comprising:
 a paper storage member for storing papers supplied to an image generating apparatus; and   a paper push-up member provided on the bottom of said paper storage member for receiving said papers thereon and pushing up said papers to a position for coming into contact with a paper feed roller provided on a paper supply port of said image generating apparatus, wherein   said paper push-up member integrally includes:   a notched or hole-shaped relief portion for preventing said paper push-up member from coming into contact with said paper feed roller when rotating in a paper push-up direction,   a protrusion for further pushing up said papers provided on a surface opposite to the surface receiving said papers, and   an engaging portion provided on an end opposite to said relief portion for rotatably engaging with said paper storage member, and   an end of said relief portion of said paper push-up member opposite to a paper feed direction is arranged between the axis of said paper feed roller of said image generating apparatus and the outermost peripheral portion of said paper feed roller opposite to said paper feed direction in plan view.   
   
   
       12 . The paper feed cartridge according to  claim 11 , wherein
 both ends of said relief portion in a direction perpendicular to said paper feed direction are substantially parallel to a side end surface of said paper feed roller.   
   
   
       13 . The paper feed cartridge according to  claim 11 , wherein
 the length of said relief portion in a direction perpendicular to said paper feed direction is larger than the length of said paper feed roller in said direction perpendicular to said paper feed direction.   
   
   
       14 . The paper feed cartridge according to  claim 11 , wherein
 an end of said relief portion opposite to said paper feed direction is so formed as not to come into contact with said paper feed roller when said paper push-up member is pushed up in a push-up direction in a state receiving no said papers thereon.   
   
   
       15 . The paper feed cartridge according to  claim 11 , wherein
 said relief portion is hole-shaped, and   an end of said hole-shaped relief portion in a paper feed direction is arranged between the axis of said paper feed roller and the outermost peripheral portion of said paper feed roller in said paper feed direction in plan view.   
   
   
       16 . The paper feed cartridge according to  claim 15 , wherein
 said paper feed roller is substantially rectangularly formed in plan view, and   said hole-shaped relief portion is also substantially rectangularly formed in plan view.   
   
   
       17 . The paper feed cartridge according to  claim 15 , wherein
 ends of said hole-shaped relief portion in said paper feed direction and a direction opposite to said paper feed direction are so formed as not to come into contact with said paper feed roller when said paper push-up member is pushed up in a push-up direction in a state receiving no said papers thereon.