Developing unit

#This application claims priority to Japanese Patent Application Nos. 2005-252487 and 2005-252488. The entire disclosure of Japanese Patent Application Nos. 2005-252487 and 2005-252488 are hereby incorporated herein by reference.

#1. Field of the Invention

#The present invention relates to a developing unit, and more particularly to a developing unit which is used in a color image forming device to which toner is externally supplied.

#FIG. 1 is a schematic block diagram of a color printer according to one embodiment of the present invention.

#FIG. 2 is an external perspective view of a developer.

#FIG. 3 is a detail cross sectional block diagram of a toner supply device.

#FIG. 1 shows a color printer 1, which serves as a full color image forming device, according to one embodiment of the present invention. Furthermore, FIG. 1 is a schematic drawing for the purpose of showing the arrangement of each of the constituent elements, and does not illustrate the details of each unit.

#Overall Constitution

#The color printer 1 is a device that is connected to, for example, a computer (not shown), and is capable of printing a color image on a sheet of paper based on image data, which is sent from, for example, the computer. In addition, the right side in FIG. 1 is the side where an operator operates the color printer 1; hereinbelow, the right side of the device in FIG. 1 will be referred to as the near side, and the left side will be referred to as the far side.