The present invention has an object to provide a retractable type writing instrument, in which a nib is fixed to a cartridge by means of a nib fixing means, and the nib fixing means has an air circulation passage formed in a coupling part thereof, such that it is possible to prevent the air circulation passage from being exposed, thus to enhance an aesthetic appearance when using the writing instrument, and prevent an occurrence of defective writing by always stably supplying air due to prevention of foreign matters from inflowing into the cartridge. The retractable type writing instrument, including: a body case including a knock part installed therein to be operated by pushing, and a cartridge inserted into a hollow inside thereof; and a nib fixing means coupled to an end of the cartridge so as to connect a nib housed therein with the cartridge.

A writing implement has a writing tip extending from the barrel for writing and a rubbing element that surrounds the writing tip that is selectively extendable from a housing to erase or change color of the writing and retractable into the housing for storage.

A writing implement has a writing tip extending from the barrel for writing and a rubbing element that surrounds the writing tip that is selectively extendable from a housing to erase or change color of the writing and retractable into the housing for storage.

Provided are an erasing implement and a writing implement equipped with the erasing implement, the erasing implement being capable of erasing writing regardless of the type of ink or lead of the writing implement, even writing with thermochromic ink or writing with pencil lead. The erasing implement is equipped with a first erasing member for erasing writing with thermochromic ink and a second erasing member for erasing writing of types other than thermochromic ink, and is configured by covering the outer surface of the second erasing member with the first erasing member.

A multi-pen includes: an upper body; a lower body detachably coupled to a lower side of the upper body; at least one ink lead and a sharp pipe accommodated in the upper body and the lower body; a sharp knob coupled to an upper side of the sharp pipe and having a through hole formed therein; a cover detachably provided at an upper side of the sharp knob; and a sharp exposure part exposed to the outside of the lower body according to an operation of the sharp knob, wherein a sharp lead is supplied to the sharp pipe from the upper side of the sharp knob through the through hole.

A marking instrument having a plurality of removable writing nibs serially aligned so that an operator can remove a spent or fluid-affected writing nib and, thereby, access a fresh writing tip.

A marking instrument having a plurality of removable writing nibs serially aligned so that an operator can remove a spent or fluid-affected writing nib and, thereby, access a fresh writing tip.

The part for mounting on the finger is provided so as to be integral with a linking member; by means of building-in, folding, inserting and removing, and winding, the holder is made deformable to a carried condition when not in use; a necessary shortest dimension of the writing tool in the written condition is divided into at least two sections, i.e., an axis body 1 and a cap 2; and then, the axis body 1 and the cap 2 are overlapped with each other by means of folding or storing to thereby shorten the writing tool in a retained condition, and the writing tool in the written condition is reversibly movable in a predetermined range to thereby make an angle of the writing tool adjustable.

The part for mounting on the finger is provided so as to be integral with a linking member; by means of building-in, folding, inserting and removing, and winding, the holder is made deformable to a carried condition when not in use; a necessary shortest dimension of the writing tool in the written condition is divided into at least two sections, i.e., an axis body 1 and a cap 2; and then, the axis body 1 and the cap 2 are overlapped with each other by means of folding or storing to thereby shorten the writing tool in a retained condition, and the writing tool in the written condition is reversibly movable in a predetermined range to thereby make an angle of the writing tool adjustable.