Intermediate transfer member and image forming apparatus

An image forming apparatus comprising:

• an image bearing member configured to bear a toner image;
• an intermediate transfer belt to which the toner image on the image bearing member is to be primarily transferred;
• a metal roller configured to primarily transfer the toner image from the image bearing member to the intermediate transfer belt;
• and
• a secondary transfer member configured to secondarily transfer the toner image from the intermediate transfer belt to a recording material,
• wherein the intermediate transfer belt comprises:
• a belt member containing a thermoplastic resin with carbon black dispersed in the thermoplastic resin,
• wherein an average primary particle size of the carbon black is 10 nm or more and 30 nm or less,
• wherein a content of the carbon black is 15.0% by mass or more and 30.0% by mass or less with respect to the belt member,
• wherein the thermoplastic resin has a crystallinity of 8% or more and 25% or less, and
• wherein (Li+Lo+Lc)/3≤100 nm, where Li is a value of an L-function indicating a dispersibility of the carbon black with respect to the thermoplastic resin in an outer peripheral surface region having a range of 10 μm from an outer peripheral surface of the belt member in a thickness direction of the belt member, Lo is a value of the L-function indicating a dispersibility of the carbon black with respect to the thermoplastic resin in an inner peripheral surface region having a range of 10 μm from an inner peripheral surface of the belt member in the thickness direction, and Lc is a value of the L-function indicating a dispersibility of the carbon black with respect to the thermoplastic resin in a central region having a range of 5 μm in the thickness direction and another range of 5 μm in the thickness direction from a central portion of the belt member in the thickness direction.