Developer accommodating unit, developing device, process catridge and electrophotographic image forming apparatus

A developer accommodating unit comprising:

• a developer accommodating portion, provided with an opening for permitting discharge of developer, for accommodating the developer;
• a sealing member including a connecting portion for being connected to said developer accommodating portion so as to seal the opening;
• an unsealing member for exposing the opening by peeling said connecting portion of said sealing member from said developer accommodating portion in an unsealing direction;
• and
• a frame, including said developer accommodating portion, for accommodating said unsealing member therein,
• wherein said connecting portion includes an upstream side connecting portion and downstream side connecting portion with respect to the unsealing direction,
• wherein said upstream side connecting portion opposes said downstream side connecting portion via the opening,
• wherein said upstream side connecting portion includes a first connecting portion at a longitudinal end portion thereof and a second connecting portion at a longitudinal central portion thereof,
• wherein, when said upstream side connecting portion is peeled from said developer accommodating portion, said unsealing member sags, and
• wherein, when said upstream side connecting portion is peeled from said developer accommodating portion, said first connecting portion is peeled before said second connecting portion.

A developing device comprising:

• a frame for accommodating developer;
• a developer carrying member for carrying the developer;
• a sealing member including a connecting portion for sealing an opening that supplies the developer to said developer carrying member;
• and
• an unsealing member, provided inside of said frame, for exposing the opening by peeling said connecting portion of said sealing member in an unsealing direction,
• wherein said connecting portion includes an upstream side connecting portion and downstream side connecting portion with respect to the unsealing direction,
• wherein said upstream side connecting portion opposes said downstream side connecting portion via the opening,
• wherein said upstream side connecting portion includes a first connecting portion at a longitudinal end portion thereof and a second connecting portion at a longitudinal central portion thereof,
• wherein, when said upstream side connecting portion is peeled, said unsealing member sags, and
• wherein, when said upstream side connecting portion is peeled from said frame, said first connecting portion is peeled before said second connecting portion.