| 摘要 |
PURPOSE:To uniformize the emitting capacities of respective colors in such a case that a bubble jet type liquid jet head is used in color recording, by making all of the lengths from the parts communicating with liquid chambers of flow passages to heat energy acting parts not equal necessarily. CONSTITUTION:For example, heads are provided with respect to four colors Y(yellow), M(magnet), C(cyan), B(black) so as to obtain uniform emitting capacity even when the physical properties of plural inks having respective colors or densities are not constant necessarily. The lengths l from the parts communicating with liquid chambers 6 of flow passages 5 to heat energy acting parts 9 are changed or heads each having plural orifices are independently provided at every colors or the lengths l are made constant but the distances from the heat energy acting parts 9 to orifices 4 are changed. By this method, even when the physical properties of ink are different at every colors (or densities), by changing the lengths of the flow passages corresponding thereto, the irregularity of a supply speed can be corrected. The emitting capacities from the respective orifices of the respective inks can be also made uniform. |
