Toner cartridge internal plug

A developer unit for developing a latent image recorded on an image receiving member with a supply of particles, said developer unit comprising:

• an open ended container defining a chamber in communication with the open end thereof with the particles being stored in the chamber of said container;
• a puncturable seal attached to the open end of said container for sealing the chamber, said container being installable into the developer unit without removal of said seal;
• and
• an internal seal attached to the open end of said container and internal to said puncturable seal, said internal seal having a surface closely conforming to the open end of said container, said internal seal being removable from the open end of said container by displacement of said internal seal into the chamber of said container.

An electrophotographic copy machine for developing with a supply of particles a latent image recorded on an image receiving member, said copy machine including a developer unit comprising:

• an open ended container defining a chamber in communication with the open end thereof with the particles being stored in the chamber of said container;
• a puncturable seal attached to the open end of said container for sealing the chamber, said container being installable into the developer unit without removal of said seal;
• and
• an internal seal attached to the open end of said container and internal to said puncturable seal, said internal seal having a surface closely conforming to the open end of said container, said internal seal being removable from the open end of said container by displacement of said internal seal into the chamber of said container.