| 摘要 |
FIELD: printing industry. ^ SUBSTANCE: according to invention, fluid discharge head includes substrate and wall element with passages, which is located on substrate and has the wall of passage interconnected with outlet fluid discharge channel. Wall element with passages is provided with cavity that is not interconnected with the above passage. At that, if to look from the above outlet channel in the direction of substrate, the cavity has the shape of the symbol that corresponds to information on the fluid discharge head. ^ EFFECT: increasing information storage time with possibility of its identification. ^ 19 cl, 23 dwg |
