JP2005164674A5 - - Google Patents

Claims (12)

  A seamless belt used in an image forming apparatus, wherein the seamless belt contains at least two thermoplastic polymers and a conductive filler that are not completely compatible with each other, and the thermoplastic polymer that forms a continuous layer is a crystal. A seamless belt comprising 80% or more of a conductive polymer dispersed in a thermoplastic resin component forming a discontinuous phase.   2. The relation of Spa <Spb is satisfied, where Spa is the solubility index of the thermoplastic polymer forming the continuous layer, and Spb is the solubility index of the thermoplastic polymer forming the discontinuous phase. The seamless belt described in 1. The conductive filler is replaced by the following relationship: | Spa-Spc |> | Spb-Spc |
Spa: Solubility index of the thermoplastic polymer forming the continuous layer Spb: Solubility index of the thermoplastic polymer forming the discontinuous layer Spc: Treatment satisfying the solubility index of the treating agent for surface treatment of the conductive filler The seamless belt according to claim 1, wherein the surface is treated with an agent.   The glass transition temperature of the thermoplastic polymer forming the continuous layer is Tga, and the glass transition temperature of the thermoplastic polymer forming the discontinuous phase is Tgb, Tga> Tgb is satisfied. The seamless belt according to any one of claims 1 to 3.   The seamless belt according to any one of claims 1 to 4, wherein the thermoplastic polymer forming the discontinuous phase is a crystalline polymer.   The seamless belt according to any one of claims 1 to 4, wherein the thermoplastic polymer forming the discontinuous phase is a polymer having a polyalkylene unit.   The seamless belt according to any one of claims 1 to 4, wherein the thermoplastic polymer forming the discontinuous phase is a polymer having a polyether unit.   The seamless belt according to any one of claims 1 to 4, wherein the thermoplastic polymer forming the discontinuous phase is a polyether ester amide.   The addition amount of the thermoplastic polymer that forms the discontinuous phase is 3 to 30 parts by mass with respect to 100 parts by mass of the thermoplastic polymer that forms the continuous layer. Item 9. The seamless belt according to any one of Items 8.   The amount of the conductive filler added is 10 to 500 parts by mass with respect to 100 parts by mass of the thermoplastic polymer forming the discontinuous phase. The described seamless belt.   The seamless belt according to any one of claims 1 to 10, wherein the conductive filler is conductive carbon black. An image forming apparatus comprising the seamless belt according to any one of claims 1 to 11 as an intermediate transfer belt or a transfer conveyance belt.