| US 7,517,052 B2 | ||
| Ink-jet head and ink-jet recording apparatus using the head | ||
| Satoshi Wada, Tokyo (Japan); Makoto Akahira, Tokyo (Japan); Tsuyoshi Shibata, Tokyo (Japan); Hiromitsu Yamaguchi, Tokyo (Japan); Yoshitomo Marumoto, Tokyo (Japan); Ryoki Jahana, Tokyo (Japan); Yasunori Fujimoto, Tokyo (Japan); Takashi Ochiai, Tokyo (Japan); and Eri Goto, Tokyo (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Dec. 08, 2004, as Appl. No. 11/7,384. | ||
| Claims priority of application No. 2003-417364 (JP), filed on Dec. 15, 2003. | ||
| Prior Publication US 2005/0128248 A1, Jun. 16, 2005 | ||
| Int. Cl. B41J 2/14 (2006.01); B41J 2/15 (2006.01); B41J 2/155 (2006.01); B41J 2/21 (2006.01) | ||
| U.S. Cl. 347—49 [347/40; 347/42; 347/43] | 8 Claims |
| 1. An ink-jet head comprising:
at least first and second head chips,
each of the first and second head chips including ports arranged at least along first and second rows having end portions,
the first and second rows adjoining each other,
wherein at least one of the first row of ports includes a first discharge port selectively configured to discharge a first
color ink,
wherein at least one of the second row of ports includes a second discharge port selectively configured to discharge a second
color ink having a different color from the color of the first color ink,
wherein the first and second head chips adjoin each other such that the first and second rows of ports of the first head chip
are staggered relative to the first and second rows of ports of the second head chip at their end portions along a direction
in which the ports are disposed,
wherein at the end portions of the first and second head chips, the first discharge port of the first head chip overlaps with
the second discharge port of the second head chip in a direction orthogonal to the direction in which the ports are disposed,
and the second discharge port of the first head chip does not overlap with the first discharge port of the second head chip
in a direction orthogonal to the direction in which the ports are disposed, and
wherein landing of droplets discharged from the ports at the end portions of the first and second head chips on a recorded
material is performed firstly with respect to the first color ink, and then with respect to the second color ink, in order.
|