Inkjet printer
AssigneeKishu Giken Kogyo Co., Ltd.
InventorRyusuke Horiguchi
Life of this patent
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Abstract
In an inkjet printer of the present invention, an air blowing outlet is formed around a slit through which ink droplets pass in a cap of a head cover, and air is blown toward a printing object from the blowing outlet. The air blowing outlet is formed independent of the slit, and the direction in which the air is blown is substantially parallel to the flight direction of ink droplets, and thus hardly any blown air meets the ink droplets that have passed through the slit and are flying toward the printing object. On the other hand, ink particles that have rebounded off the printing object are repelled by the air blown from the blowing outlet, and thus the amount of ink particles entering the head cover via the slit is suppressed.
Claims12
An inkjet printer comprising:
- a printhead, comprising:
- a gun configured to generate continuous ink droplets by applying a vibration having a constant period to ejected ink;
- a charging electrode configured to electrically charge at least some of the generated ink droplets by applying a stepped-wave voltage to the at least some ink droplets in synchronization with a period of the ink droplets;
- at least one deflection electrode configured to deflect at least some of the electrically charged ink droplets in at least one of a vertical direction or a horizontal direction in accordance with an amount of the charge on each of the droplets, and cause the ink droplets to land on a printing surface of a printing object;
- and
- a tubular head cover that houses the gun, the charging electrode, and the deflection electrode in a cavity portion, and that is provided with a slit through which the electrically charged ink droplets pass, wherein a character is formed using rows of printed dots by causing the ink droplets ejected from the printhead to land on the printing object moving in the horizontal direction or the vertical direction,
- wherein the head cover comprises a tubular cover body having a rear end portion that is sealed, and a cap that is attached so as to cover a front portion of the cover body, and
- wherein the cap comprises the slit and a blowing outlet that surrounds at least a portion of the slit, and air is blown out from the blowing outlet toward the printing object.
Dependencies are inferred from the claim text.