Idler roll with retard spin function
A method and apparatus for preventing excess spin of idler rollers after a sheet of paper or other media has passed a media guide with the idler rollers including a retard function within plastic idler rollers. The retard function is provided by adding a retard flexure molded into the idler roller. This adds a brake which stops excess over spin of the idler rollers.
1. A reprographic device includes an idler roller, said idler roller comprising:
a first end cap;
a second end cap;
a center member connected between said first and second end caps to form said idler roller; and
wherein said center member includes first, second and third portions with said second portion positioned between said first and third portions and including a peripheral portion thereof that is reduced in diameter with respect to said first and third portions and another portion thereof being semi-circular in shape, and wherein said first and third portions are in touching relationship with said first and second end caps.
2. The reprographic device of claim 1 , wherein one portion of said semi-circular shape of said reduced diameter portion of said center member has a portion thereof spaced on opposite sides from other portions of said center member and connects with a flat portion of said center member.
3. The reprographic device of claim 1 , wherein said center member includes at least two different radii.
4. A method for controlling spinning of an idler roller after a sheet has passed thereover, including:
providing an idler roller with a first end cap and a second end cap attached to a middle member to form said idler roller; and
wherein said middle member includes opposite end portions connected to a third portion positioned between said opposite end portions, said third portion including a flat portion and portions thereof touching said opposite end portions of said middle member and a separate portion that is spaced from said opposite end portions, and wherein said opposite end portions are in touching relationship with said first and second end caps.
5. The method of claim 4 , including providing said third portion with a radius that is different from a radius of said opposite end portions.
6. The method of claim 4 , wherein said third portion of said middle member includes a reduced diameter portion.
7. The method of claim 6 , wherein said third portion is molded into said middle member of said idler roller.