A developer regulation member includes developer regulation device for
regulating an amount of developer carried on a developer carrying member.
The developer regulation device includes a first regulation portion
formed of a first material which has a Shore D hardness of not less than
70 degrees or is metal, and a second regulation portion which is disposed
opposite to the developer carrying member and is formed of a material
different from the first material for the first regulation portion. The
second regulation portion has an edge which is in contact with the
developer carrying member.