Patent ID: 6195515
Filing Date: 2001-02-27
Classification: G03G

Abstract:
A developing apparatus comprising:a developing container containing a developer;a developer bearing body provided in an opening portion of said developing container for bearing and carrying the developer to a developing position;a leakage preventing member for contacting with an end portion of said developer bearing body in a lengthwise direction of said developer bearing body and preventing said developer from leaking from said end portion;a seal member provided in said opening portion for contacting with said developer bearing body with a length greater than a length of a developing area in the lengthwise direction of said developer bearing body;said seal member being sandwiched between said developer bearing body and said leakage preventing member in said end portion, and in said lengthwise direction, a length of a free end of a seal member being smaller than a length by which said seal member is supported; anda contacting width between said seal member and said leakage preventing member in the lengthwise direction becoming smaller toward said free end.