Patent ID: 6997631

Claim:
An applicator of an automatic delivery type comprising a raw-ink reservoir allowing the internal flow of ink filled therein; an ink absorber for controlling the excessive flow of ink in the ink reservoir; and an application body for applying ink with an ink flow path for introducing the ink in the ink reservoir branched out into two flow paths, an ink flow path on the application body side, and an ink flow path on the ink absorber side, wherein, with the application body facing downward, an application body's flow tube whose inside is used as an ink flow path on the application body side is arranged on the lower side relative to an ink connecting opening, as an exit of the ink flow path, of the ink reservoir, while a double tube consisting of an inner tube whose inside is used as an ink flow path on the ink absorber side and an outer tube for ventilation is arranged on the upper side relative to the ink connecting opening, wherein: in the inside of the inner tube the ink absorber is arranged and an air intake/exhaust annulus is formed, the air intake/exhaust annulus is connected to an outside air opening which is connected to the outside circumference of the application body via the outer tube for ventilation by a roundabout way, the ink absorber is divided into two so that it communicates with the ink in the ink reservoir only in the ink connecting opening, and in the ink flow path the relation, A<B<C, is held, where A represents the density or capillary force of the ink absorber in the large-diameter portion of the inner tube, which is the rear portion of the flow path on the ink absorber side, B represents the density or capillary force of the capillary member arranged in the small-diameter portion of the inner tube, which is the front portion of the flow path on the ink absorber side, and C represents the density or capillary force of the capillary member arranged in the application body's flow tube which is the ink flow path on the application body side.