The invention relates to a writing implement such as a pen which includes a housing and an internal component in which there is provided a reservoir of ink. The internal component typically includes a portion such as a ballpoint which allows ink to be transferred from the reservoir to a surface to which the said portion is applied. The writing implement and/or internal component is rendered detectable by metal detection and/or X-ray detection apparatus when the internal component is within range of the same so that the internal component is detectable when separated, deliberately or inadvertently, from the remainder of the writing implement.

A is a pen including: an ink reservoir that stores an ink including decorative particles and a pen tip section. The ink reservoir includes a tubular casing member having liquid blocking properties and an ink occlusion material disposed inside the casing member. The casing member has a first opening end and a second opening end. The ink occlusion material includes multiple fibers disposed in the casing member and the multiple fibers respectively having one ends and other ends each disposed at a position corresponding to the first opening end or the second opening end of the casing member.

An applicator includes a valve mechanism that communicates an application liquid tank and an applying part. The valve mechanism has at least a valve stem and a valve holder for holding the valve stem therein, the application liquid can flow through a gap between the valve stem and the valve holder, the valve stem is formed with an air exchange hole, and, the air exchange hole can be opened and closed by an opening/closing member that opens/closes when the pressure on the application liquid tank side becomes negative or positive compared to that on the applying part side. The applicator is capable of exchanging air after discharging the application liquid even if the applicator is equipped with a valve mechanism that opens its valve by increasing the internal pressure of the ink tank.

An applicator includes a valve mechanism that communicates an application liquid tank and an applying part. The valve mechanism has at least a valve stem and a valve holder for holding the valve stem therein, the application liquid can flow through a gap between the valve stem and the valve holder, the valve stem is formed with an air exchange hole, and, the air exchange hole can be opened and closed by an opening/closing member that opens/closes when the pressure on the application liquid tank side becomes negative or positive compared to that on the applying part side. The applicator is capable of exchanging air after discharging the application liquid even if the applicator is equipped with a valve mechanism that opens its valve by increasing the internal pressure of the ink tank.

An applicator in which a through-hole in a plug cannot be distorted and therefore an air flow passage for a liquid application material can be secured, and liquid leakage from a core material impregnated with a liquid application material cannot be caused upon uncapping the applicator. The applicator includes: a body; an application member housed in the body; a storage section in which the liquid application material is stored; and a plug positioned on the rear end of the application member to penetrate and hold the application member into and in a through-hole that is bored in the plug, and can allow an rear-end-side tip part of the application member to be exposed on the storage section side, wherein the shape of the through-hole is formed in such a manner that the width of a gap between the through-hole and the application member penetrating in the through-hole can be adjusted.

A device for manual application of a liquid. The device may be used for painting, marking, drawing, writing and/or applying make-up to keratinous surfaces. The device includes a capillary store for the liquid, the capillary store having a filing level, and a measuring device for measuring the filing level of the capillary store.

Provide is a direct liquid type writing-brush pen that is equipped with a valve mechanism; and with which the ink tube is of replaceable cartridge type, and the writing brush tip is always impregnated with an appropriate amount of ink while the ink leakage being suppressed, whereby an excellent feeling of writing can be always given. A direct liquid type writing-brush pen, including a barrel, which holds a writing brush tip unit at the distal end part thereof; an ink cartridge, which is slidably and detachably fitted into the barrel from the basal end side thereof; a cap, which covers the writing brush tip unit; and a stopper, which is fitted to the basal end part of the barrel to slidably support the basal end part of the ink cartridge, which is protruded from the basal end side of the barrel, wherein, in the distal end part of the ink cartridge, a valve mechanism, which accommodates a valve core in a valve seat, is incorporated; in the valve seat, the distal end part of the valve core is removably connected to the basal end part of a relay core, which constitutes the writing brush tip unit; and on the circumferential face of a smaller diameter part of the valve seat, a sealing strip is formed.

Provide is a direct liquid type writing-brush pen that is equipped with a valve mechanism; and with which the ink tube is of replaceable cartridge type, and the writing brush tip is always impregnated with an appropriate amount of ink while the ink leakage being suppressed, whereby an excellent feeling of writing can be always given. A direct liquid type writing-brush pen, including a barrel, which holds a writing brush tip unit at the distal end part thereof; an ink cartridge, which is slidably and detachably fitted into the barrel from the basal end side thereof; a cap, which covers the writing brush tip unit; and a stopper, which is fitted to the basal end part of the barrel to slidably support the basal end part of the ink cartridge, which is protruded from the basal end side of the barrel, wherein, in the distal end part of the ink cartridge, a valve mechanism, which accommodates a valve core in a valve seat, is incorporated; in the valve seat, the distal end part of the valve core is removably connected to the basal end part of a relay core, which constitutes the writing brush tip unit; and on the circumferential face of a smaller diameter part of the valve seat, a sealing strip is formed.

Embodiments of the disclosure can include writing instruments, nibs for writing instruments, and methods of making the same. In one embodiment, the writing instrument includes a reservoir; an ink solution comprising a pigment, the ink solution being housed within the reservoir; a nib disposed at an end of the reservoir and plugging an opening of the reservoir such that the reservoir is closed, wherein a tip of the nib extends outside of the reservoir; and a filament extending within the reservoir, the filament being in fluid communication with a portion of the nib within the reservoir, such that the ink solution travels along the filament and through the nib, by capillary action, wherein the nib and filament are formed such that no more than 50 percent of the pigment present in the nib and filament flow into the reservoir outside of the nib and filament when the writing instrument is stored with the nib up for a period of one day.

Embodiments of the disclosure can include writing instruments, nibs for writing instruments, and methods of making the same. In one embodiment, the writing instrument includes a reservoir; an ink solution comprising a pigment, the ink solution being housed within the reservoir; a nib disposed at an end of the reservoir and plugging an opening of the reservoir such that the reservoir is closed, wherein a tip of the nib extends outside of the reservoir; and a filament extending within the reservoir, the filament being in fluid communication with a portion of the nib within the reservoir, such that the ink solution travels along the filament and through the nib, by capillary action, wherein the nib and filament are formed such that no more than 50 percent of the pigment present in the nib and filament flow into the reservoir outside of the nib and filament when the writing instrument is stored with the nib up for a period of one day.