Isothermalizing member for a printing machine

A printing machine having an apparatus for equalizing the temperature of a body in contact with the apparatus, comprising:

• a sealed chamber, wherein said sealed chamber further comprises a sealed cylindrical member supported for rotation about a longitudinal axis thereof;
• and
• a fluid contained within said sealed chamber, said fluid being in a two phase condition and the printing machine having a heat and pressure fusing system in which images are fused to a substrate, comprising a heated fusing member and said sealed cylindrical member in circumferential contact with said fusing member to form a pressure nip therebetween.

A printing machine having an apparatus for equalizing the temperature of a body in contact with the apparatus, comprising:

• a sealed chamber;
• and
• a fluid contained within said sealed chamber, said fluid being in a two phase condition and the printing machine having a photoreceptive web member for forming images thereon, wherein said photoreceptive web member is contacted end supported by said sealed chamber.

A method of maintaining a uniform temperature of a body in a printing machine comprising:

• maintaining a substantially pure fluid substance in a two phase condition in a sealed member;
• contacting the body with the sealed member so that the temperature of the body is equalized by the transfer of heat through the sealed member, wherein said sealed member comprises a support roll in contact with a photoreceptive web member.

A method of maintaining a uniform temperature of a body in a printing machine comprising:

• maintaining a substantially pure fluid substance in a two phase condition in a sealed member;
• contacting the body with the sealed member so that the temperature of the body is equalized by the transfer of heat through the sealed member wherein said sealed member comprises a tubular chamber in contact with a developer housing storage chamber.

A method of maintaining a uniform temperature of a body in a printing machine comprising:

• maintaining a substantially pure fluid substance in a two phase condition in a sealed member:
• contacting the body with the sealed member so that the temperature of the body is equalized by the transfer of heat through the sealed member, wherein said sealed member comprises a tubular chamber inside a developer housing storage chamber.

A method of maintaining a uniform temperature of a body in a printing machine comprising:

• maintaining a substantially pure fluid substance in a two phase condition in a sealed member;
• contacting the body with the sealed member so that the temperature of the body is equalized by the transfer of heat through the sealed member, wherein said sealed member comprises a backer bar in contact with a photoreceptive web member.