Patent ID: 7565093

Claim:
An image-forming device, comprising: a housing; and a first cartridge and a second cartridge that are detachably mounted in the housing and that have a process member used in an image-forming process, the first cartridge being formed thicker than the second cartridge in a thickness direction orthogonal to a mounting direction of the first and second cartridges, the housing having a cartridge-accommodating section that accommodates the first and second cartridges therein, the cartridge-accommodating section including first and second accommodating sections that are disposed in the mounting direction of the first and second cartridges and that are partly displaced with respect to each other in the thickness direction; the second accommodating section being disposed upstream of the first accommodating section with respect to the mounting direction of the first and second cartridges and being formed thicker than the first cartridge in the thickness direction and thinner than both the first and second cartridges together when the first and second cartridges are accommodated in the cartridge-accommodating section, the first accommodating section being formed thicker than the first and second cartridges together in the thickness direction when the first and second cartridges are accommodated in the cartridge-accommodating section, wherein the first accommodating section defines a first accommodating region that accommodates the first cartridge therein; and wherein the second accommodating section defines a second accommodating region that accommodates the second cartridge therein.