摘要:
In order to maintain ink supply pressure to a recording head constant while supplying the recording head with ink with an minimum of air entrained therein, the invention provides an ink supplier which comprises a main ink reservoir, a subsidiary ink reservoir connected to the main ink reservoir for replenishment with ink from the main ink reservoir and a means whereby a position head of the ink liquid level in the subsidiary ink reservoir is maintained substantially constant relative to a printing head face of the recording head. Included preferably also are a deaerator associated with the subsidiary ink reservoir for removing air from ink therein and a float floating on ink in the subsidiary ink reservoir. Further, in order for a mechanism that adjusts the position head for ink supply to the recording head to be made light equipped and manufactured at reduced cost, the invention provides an ink supplier that comprises a back pressure reservoir connected between the main ink reservoir and the recording head and adapted to maintain a height of the ink liquid level therein substantially constant against an amount of ink consumption by the recording head and a means for adjusting the back pressure reservoir in its vertical position, thereby adjusting a position head of the ink liquid level in the back pressure reservoir relative to a printing head face of the recording head.
摘要:
A piezoelectric thin film element D, in which a piezoelectric thin film 1 with first and second electrode films 2 and 3 respectively formed on its opposite surfaces in the thickness direction is held by a hold film 5, is fabricated by forming each film 1, 2, 3, and 5 on a film formation substrate 11 and removing the film formation substrate 11 by etching. Even when the hold film 5 is made of material such as resin and therefore exhibits relatively poor adhesion with respect to the other films, the piezoelectric thin film 1 is protected from damage by etchant because the first electrode film 2 which comes into contact with the film formation substrate 11 is formed such that the overall circumference of a peripheral edge portion of the first electrode film 2 laterally extends beyond the lateral surface of the piezoelectric thin film 1 and closely adheres to the hold film 5.
摘要:
An ink jet recording apparatus in which a UV curable ink is ejected from nozzle holes of an ink jet head. The ejected ink is attached onto a recording surface of a recording medium (recording paper), and is cured by irradiation with ultraviolet light. The ink jet head, or a moving member which moves together with the ink jet head, is provided with a plurality of ultraviolet light emitting diodes that emit the ultraviolet light to the ink attached onto the recording surface of the recording medium to cure the ink.