| US 7,585,056 B2 | ||
| Liquid discharge head | ||
| Masaki Oikawa, Tokyo (Japan) | ||
| Assigned to Canon Kabushiki Kaisha, Tokyo (Japan) | ||
| Filed on Apr. 16, 2008, as Appl. No. 12/103,991. | ||
| Application 12/103991 is a division of application No. 11/304815, filed on Dec. 16, 2005, granted, now 7,387,371. | ||
| Claims priority of application No. 2004-373886 (JP), filed on Dec. 24, 2004. | ||
| Prior Publication US 2008/0225086 A1, Sep. 18, 2008 | ||
| This patent is subject to a terminal disclaimer. | ||
| Int. Cl. B41J 2/05 (2006.01) | ||
| U.S. Cl. 347—65 [347/62] | 5 Claims |
| 1. A liquid discharge head for discharging liquid, comprising:
an element substrate having a main surface on which a plurality of discharge energy generating elements for generating energy
for discharging a liquid droplet are provided; and
a flow path constituting substrate disposed on said main surface of said element substrate in order to constitute a bubble
generating chamber having said plurality of discharge energy generating elements, a first discharge port portion for discharging
the liquid droplet, a second discharge port portion for communicating said bubble generating chamber with said first discharge
port portion, said second discharge port portion having a diameter greater than that of said first discharge port portion
and a liquid supply path for supplying the liquid to said bubble generating chamber,
wherein at least one of said discharge energy generating elements is disposed to straddle between an inner area of said second
discharge port portion and an outer area outside of said second discharge port portion in a plan view viewed from a direction
perpendicular to said main surface of said element substrate at a region where said bubble generating chamber is communicated
with said liquid supply path.
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