| 摘要 |
An image forming device comprises: first, second, third, and fourth photosensitive media; a first driving source to rotate the first photosensitive medium; a second driving source to rotate the second photosensitive medium; and a planetary gear train to receive rotational forces of the first and second driving sources so as to rotate the third photosensitive medium, wherein the fourth photosensitive medium is rotated by being linked with the third photosensitive medium. |
