US 2003/0202041 A1 · Ink jet recording head

Abstract

An ink jet recording head is the one having discharge ports for discharging liquid droplets in different discharge amounts intermixed therefor, and formed by a recording element substrate provided with the discharge portion having comparatively small discharge port, in particular, for discharging liquid in a comparatively small amount, and another recording element substrate provided with the discharge port having comparatively large discharge port, in particular, for discharging liquid in a comparatively large amount. Near the small discharge port, opening communicated with the discharge portion and open to the opening surface of the discharge port is provided. With the structure thus arranged, it is made possible to appropriately perform the suction recovery process with ease.

Claims20

Dependent claims

An ink jet recording head comprising:

a first discharge portion for discharging liquid from a first discharge port as liquid droplet in a specific amount;
a second discharge portion for discharging liquid from a second discharge port as liquid droplet in a larger amount than that of said first discharge portion;
and
an opening provided only for said first discharge portion, being open to the opening surface of said first discharge port and communicated with said first discharge port without discharging liquid droplet.

1 more element

Dependencies are inferred from the claim text.

Ink jet recording head

Life of this patent

Ink jet recording head

Life of this patent

Abstract

Claims20