JPS638750U - - Google Patents

Description

[Brief explanation of the drawing]

1 to 3 show an embodiment of the present invention, in which FIG. 1 is a schematic side view of a copying color selection type copying machine, and FIG. 2 is a plan view showing the selection state of the developer tank. , FIG. 3 is a plan view showing the non-selected state of the developer tank,
FIG. 4 is a schematic configuration diagram showing a conventional example, and FIG. 5 is an explanatory diagram showing a developing state of the copying color selection type copying machine shown in FIG. 20 is a photosensitive drum, 20a is a drum shaft, 21
is a collar (gap setting member), 21a is a pressing part, 2
1b is a gap setting section, 22 and 23 are developer tanks, and 25 is a spiral spring (biasing means).

Claims (1)

[Scope of utility model registration request] An MG roller equipped with a magnet is provided, and a plurality of developer tanks each containing a different color of developer are arranged near the outer periphery of a photoreceptor drum having a photoreceptor on the outer periphery, and from these plurality of developer tanks. In a copying color selection type copying machine that selects an arbitrary developer tank to develop the photoreceptor, disc-shaped gap setting members are provided on both sides of the photoreceptor drum and coaxially with the photoreceptor drum, and the developer tank a pressing portion which is brought into contact with the outer periphery of the gap setting member so as to be able to move forward and backward by a biasing means, and which separates the photoreceptor drum and the MG roller to a distance at which the photoreceptor is not developed; A copying color selection type copying machine characterized by forming a gap setting section for setting a gap between a photoconductor drum and an MG roller so as to enable development of the photoconductor.