| 摘要 |
<p>A registration mark RM(Y) is a toner image which contains a first linear pattern LP1 and a second linear pattern LP2, which extend along a main scanning direction X, and a two-dimensional pattern TP, and the first linear pattern LP1, the two-dimensional pattern TP and the second linear pattern LP2 are arranged apart from each other in this order along a transporting direction D16. In short, the linear patterns LP1 and LP2 extending along the main scanning direction X are formed spaced apart from the two-dimensional pattern TP, one toward the upstream side and the other toward the downstream side, along the transporting direction D16. This suppresses the edge effect along the transporting direction D16 and realizes accurate detection of the position of each registration mark RM by a test pattern sensor 18.</p> |
