Developing apparatus

摘要

A developing apparatus includes a developer carrying sleeve, a container body accommodating a developer and rotatably supporting the sleeve, a cover mounted on the container body and configured to cover the sleeve, a first seal fixed to the container body and contacted to the sleeve to seal one end of the sleeve, and a second seal provided on the cover and contacted to the sleeve to seal the one end of the sleeve. The first second seals are disposed without overlapping with each other as seen in the direction of a normal line of the sleeve from a rotation axis of the sleeve. The second seal is disposed such that as seen in a rotational axis direction of the sleeve, it is outside the first seal and between the cover and the sleeve with respect to a circumferential direction of the sleeve and is overlapped with the first seal.

主权项

1. A developing apparatus comprising:
a developer carrying member configured and positioned to carry developer to develop a latent image; a container body configured to accommodate the developer and to rotatably support said developer carrying member; a covering member mounted on said container body and configured to cover a peripheral surface of said developer carrying member; a first sealing member configured to seal one end portion of said developer carrying member; a first supporting section configured to support said first sealing member, said first supporting section being provided in said container body and extending along a circumferential direction of said developer carrying member; a second sealing member configured to seal said one end portion of said developer carrying member; and a second supporting section configured to support said second sealing member, said second supporting section being provided on said covering member and being disposed at a position corresponding to a position where said first supporting section is not provided, with respect to the circumferential direction of said developer carrying member; wherein said first sealing member and said second sealing member are disposed so as not to overlap with each other as seen in the direction of a normal line of said developer carrying member from a rotation axis of said developer carrying member, and wherein said second sealing member is disposed at such a position that as seen in a rotational axis direction of said developer carrying member, said second sealing member is disposed so as to partly overlap with the said first sealing member with respect to the circumferential direction of said developer carrying member.