Abstract: A cap device includes a contact assembly surrounding an absorber and movable into contact with an ejection portion. When the contact assembly is separated from the ejection portion, a gap is provided between an absorber corner surface and a contact corner surface.

Abstract: A cap device, which is provided in a printer device and capable of blocking an ink ejection port, includes a casing body including a casing bottom portion and a casing wall portion, a top surface of the casing body being open, a cap assembly integrally supported by the casing body and including a cap support and a cap body capable of covering the ink ejection port, and an engaging portion that allows the casing body and the cap assembly to be attached to and detached from a cap mounting portion.

Abstract: A printer device includes a carriage that is linearly movable and includes an ink ejector, a cap to prevent ink from drying and movable into contact with the ink ejector, and a shutter assembly to cover the cap when the ink ejector is separated from the cap. The shutter assembly includes a shutter body to open and close an upper portion of the cap and a lever connected to the shutter body and able to contact the carriage.

Abstract: An image formation device includes a recording head which is capable of ejecting droplets from a nozzle, a cap to elevate a nozzle surface of the nozzle in a sealable manner, a camshaft, a first cam in the camshaft, and a motor to drive the camshaft. The camshaft is rotatable in a first rotation angle range from a reference point in a first direction and a second direction opposite to the first direction by using a position in a rotation direction when the cap is located at a lowest position as the reference point.

Abstract: A hydraulic dental cement composition which comprises a mixture of a dental cement powder having silicon oxide for its essential constituent and a setting agent powder having polyacrylic acid for its essential constituent is disclosed. This composition is of high compression strength due to the silicon dioxide contained therein, and its own pulverulence makes it excellent in workability because it has only to be kneaded with water to be placed into a useable form. Addition of zinc oxide or the like enhances the resistance to deterioration of the composition.