Developing device and image forming apparatus

An image forming apparatus comprising:

• an image holder that forms an electrostatic latent image;
• a developing section that develops the electrostatic latent image formed on the image holder into a toner image;
• a transfer section that transfers the toner image by the developing section onto a recording material;
• and
• a fixing section that fixes the toner image transferred onto the recording material to the recording material,
• wherein the developing section includes a developer holder that holds a developer containing toner and carrier and being supplied to the image holder forming the electrostatic latent image, a regulation member that regulates the developer held on the developer holder to a specified amount, and a member that is provided to decrease a space on a lower side of the regulation member, and is provided in a region that is less flexible compared to other regions of the regulation member in an axial direction of the developer holder.