Patent ID: 9568857
Date: 2017-02-14
CPC Classifications: G03G

Claim:
1. A developing device that develops an electrostatic latent image formed on an image holding member with a developer, the device comprising: a developer transporting chamber; a developer transporting member that is disposed in the developer transporting chamber in a direction extended toward a transport direction, and transports a developer in the developer transporting chamber in the transport direction with stirring; an initial developer collection chamber that is provided at an upper portion of the developer transporting chamber, before using of the developer, collects the developer to cause a developer damming member to prevent the developer from dropping into the developer transporting chamber, and removes the developer damming member and forms an integrated space with the developer transporting chamber when the developer is used, to allow the developer to drop into the developer transporting chamber; and a ceiling member that is disposed in a state of being fixed in the initial developer collection chamber, and partially narrows a passage for the developer transported by the developer transporting member, up to a height at which interference with the developer is performed, in the transport direction.