ELECTROPHOTOGRAPHIC PRINTER

PROBLEM TO BE SOLVED: To provide a horizontal installation type fixed toner cartridge with which standard of a toner cartridge, arrangement of the toner cartridge relative to a photoreceptor drum and standard of the photoreceptor drum and a development roller are optimized, and an electrophotographic printer employing the same. SOLUTION: The toner cartridges 30C, 30M, 30Y and 30K include: a housing filled with toner of a prescribed color; a development roller 35 rotatably installed on the housing to face the photoreceptor drum 20 and to supply toner to the photoreceptor drum 20 to develop an image by a difference in electrical potential; a supply roller rotatably installed in the housing in contact with the development roller 35 and to control the toner to adhere to the development roller 35; and a guide member coupled to the housing to be disposed under the supply roller and to guide supply of the toner. The diameter D2of the development roller 35 satisfies 10.4≤D2≤22.1[mm]. COPYRIGHT: (C)2011,JPO&INPIT