Composite torque transfer body and spline assembly to reduce jitter in an image forming device

A composite torque transfer body and spline assembly, comprising:

• a torque transfer component made of a plastic material and having a central body portion and a peripheral torque transfer portion attached to and extending about said central body portion;
• a spline component made of a metal material different from and having stiffness greater than that of said plastic material of said torque transfer component, said spline component having an elongated tubular spline portion and a collar portion attached to and extending about and radially outward from said spline portion;
• and
• a plurality of elements on said central body portion of said torque transfer component and said collar portion of said spline component providing press-fitting and fastening of said components to one another such that said components are mated and rotatable together about a common longitudinally-extending central axis, wherein said elements providing press-fitting of said components include:
• a press ring having an arcuate configuration substantially concentric about said central axis and attached on said collar portion of said spline component at a location spaced radially outward from said spline portion, said press ring being discontinuous having a pair of spaced apart opposite ends;
• and
• an opening defined by an edge having an arcuate configuration substantially concentric about said central axis and formed in said central body portion of said torque transfer component for receiving said press ring such that at least portions of said edge press-fit with portions of said press ring.

A composite torque transfer and spline assembly, comprising:

• a torque transfer component made of a molded plastic material and having a central body portion and a peripheral torque transfer portion integrally attached to and extending about said central body portion;
• a spline component made of a cast metal material and having an elongated tubular spline portion and a collar portion integrally attached to and extending about and radially outward from said spline portion;
• and
• a plurality of elements on said central body portion of said torque transfer component and said collar portion of said spline component providing a separate multiple segmented press-fitting and securing of said components to one another such that said components are mated and rotatable together about a common longitudinally-extending central axis, wherein said elements providing said multiple segmented press-fitting of said components include:
• a press ring having an arcuate configuration substantially concentric about said central axis and attached on said collar portion of said spline component at a location spaced radially outward from said spline portion;
• and
• an opening defined by an edge having an arcuate configuration substantially concentric about said central axis and formed in said central body portion of said torque transfer component and adapted to receive said press ring such that at least portions of said edge press-fit with portions of said press ring.