| 摘要 |
PURPOSE:To enhance head emitting capacity, by bringing a liquid jet recording head to a structure satisfying a specific relational expression. CONSTITUTION:In a liquid jet recording head, the distance from the end part A of an energy acting part 21 on an emitting orifice side to the end surface B of the emitting orifice 25 of ink 30 is set to (l) and the radius of a generated air bubble 40 is set to (r) and the max. radius of an air bubble is shown by rmax and an energy acting start time is set to O and the time when an air bubble reaches the max. air bubble radius rmax is set to tb and the time when the max. pressure Pmax is obtained at the emitting orifice part is set to tp. At this time, a structure satisfying formula I is formed to make it possible to obtain a bubble jet type liquid jet head having good sharpness, generating no satellite droplet and having ink emitting capacity of high response frequency can be obtained. |
