Writing instrument with displaceable safety separator

A writing instrument having a writing tip inserted therein and a fluid reservoir for ink or India ink disposed therein, a separator piece separating the back end of the writing tip a distance from the front end of the reservoir retained on a shoulder and permitting the back end of the writing tip to come into contact with the first end of the reservoir after removal of the separator from the shoulder, thus enabling the reservoir to come into contact with the front end of the reservoir after displacement of the separator from the shoulder thus enabling the reservoir to be opened, the shoulder forming a front edge of the writing instrument shaft, the separator piece being flexibly connected to the writing tip, the separator piece when placed against the shaft edge limiting the depth of insertion of the writing tip into the shaft so that the back end of the writing tip and the front end of the reservoir are spaced from one another within the shaft, the separator piece being inwardly flexed toward the writing tip so as to be retained within the shaft upon compressing the separator piece while forcing the writing tip into the shaft, thus causing displacement of the separator piece and subsequent movement of the back end of the writing tip into adjacency to the reservoir.