JP2013014111A5 - - Google Patents

Description

Therefore, the liquid discharge head according to the present invention includes a nozzle row composed of a plurality of nozzles each communicating with a plurality of discharge ports for discharging liquid, a main liquid supply chamber for supplying liquid to the nozzles, liquid supply chamber and communicating, with the main liquid supply chamber liquid supply path for supplying liquid to the through liquid supply path and communicating, for supplying liquid to the main liquid supply chamber through the liquid supply path a sub liquid supply chamber, a supply filter disposed to the flow direction of the liquids upstream of the sub-liquid supply chamber, the sub liquid supply chamber has an opening in communication with the liquid supply path, wherein supply filter in a direction intersecting the arrangement direction of the nozzle row, characterized in that it is disposed between the opening and the plurality of discharge ports.

Claims (8)

A nozzle array composed of a plurality of nozzles each communicating with a plurality of ejection openings for ejecting liquid;
A main liquid supply chamber for supplying liquid to the nozzle;
A liquid supply path that communicates with the main liquid supply chamber and supplies liquid to the main liquid supply chamber;
A sub liquid supply chamber for communicating with the liquid supply path and for supplying a liquid to the main liquid supply chamber via the liquid supply path ;
A supply filter disposed upstream of the sub-liquid supply chamber to the flow direction of the liquids,
The has an opening sub liquid supply chamber communicating with the liquid supply path, the supply filter, wherein in a direction intersecting the arrangement direction of the nozzle row, is disposed between the opening and the plurality of outlets A liquid discharge head.   A gas-liquid separation unit provided in the main liquid supply chamber, as a space for separating the liquid flowing into the main liquid supply chamber and air;
  An air chamber communicating with the gas-liquid separator,
  2. The liquid discharge head according to claim 1, wherein the main liquid supply chamber has an inclined surface that forms an inclination with a portion farthest from the plurality of discharge ports as the gas-liquid separation unit. . 3. The liquid discharge head according to claim 1, wherein the sub liquid supply chamber has an inclined surface that forms an inclination having a portion farthest from the supply filter as the opening. The inclination of the said main liquid supply chamber is formed over the whole region on the extension of the opening part connected to these nozzles, The Claim 1 thru | or 3 characterized by the above-mentioned. Liquid discharge head. The main liquid supply chamber, the liquid supply path, the sub liquid supply chamber, the gas-liquid separator, and the air chamber are configured by a plate-shaped case, and the plurality of discharge ports are formed in the plate shape. Configured at the end of the case
An energy generation unit disposed to correspond to each of the nozzles and generating energy for discharging the liquid; and an electrical wiring board electrically connected, the electrical wiring board comprising: liquid ejection according to any one of claims 2 to 4, wherein the terms supply filter and the gas-liquid separator and the thickness direction of the plate-like case, is disposed without overlapping each head. The liquid discharge head according to claim 5 , wherein the case includes two parts, a first case and a second case that closes the first case. The liquid discharge head according to any one of claims 1 to 6 , further comprising an electrothermal converter that generates thermal energy for discharging liquid from the nozzle. Liquid discharge recording apparatus comprising the liquid ejection head according to any one of claims 1 to 7.