Patent ID: 6438341
Filing Date: 2002-08-20
Classification: F16D,G03G

Abstract:
A drive transmission apparatus for a photosensitive drum, comprising:a first engaging member fixed to a rotary shaft of the photosensitive drum; a second engaging member into which an engaging portion engageable with said first engaging member, a positioning hole fitting onto said rotary shaft to support said rotary shaft, and a shaft portion fitted into a bearing portion arranged in an apparatus main body to be rotatably supported by said bearing portion, and a gear connected to a driving source are integrally formed; and urging means for urging said second engaging member against said first engaging member in an axial direction of said rotary shaft, wherein with a state in which said shaft portion of said second engaging member is fitted into said bearing portion arranged in said apparatus main body to be rotatably supported by said bearing portion and a state in which said rotary shaft is fitted into said positioning hole of said second engaging member to be supported by said positioning hole, said engaging portion of said second engaging member is engaged with said first engaging member to connect therebetween by an urging force of said urging means in said axial direction so that a rotary axis of the second engaging member is in position.