Abstract: In a writing utensil with a pressurizing mechanism, a cylinder is provided such that it comes into sliding contact with an outer peripheral part of a valve element and moves back and forth. An inner wall face of the cylinder is provided with a ventilating recess communicating with outside air, and an annular non-pressure contact face is positioned on the rear side of the ventilating recess. When the cylinder moves forwardly, the valve element is brought into pressure contact with the non-pressure contact face to seal the pressurizing chamber and when the cylinder moves backwardly, the valve element is moved forward and is separated from the non-pressure contact face, such that the ventilating recess communicates with the pressurized chamber.

Abstract: Provided is a writing utensil with a pressurizing mechanism, wherein the cylinder is provided in such a manner that it comes into sliding contact with an outer peripheral part of the valve element and move back and forth, and an inner wall face of the cylinder is provided with a ventilating recess communicating with outside air, and an annular non-pressure contact face positioned on the rear side of the ventilating recess, and when the cylinder moves forward, the valve element is brought into pressure contact with the non-pressure contact face to seal the pressurizing chamber, and when the cylinder moves backward, the valve element is moved forward and separated from the non-pressure contact face such that the ventilating recess communicates with the pressurizing chamber.

Abstract: A writing utensil with a retract piece is provided, with this writing utensil being equipped with a retract piece that is provided on one end side of a shaft tube of a writing utensil body and that goes forward and assumes a projecting state by its own weight when oriented to face downward, and goes backward and assumes a retracting state by its own weight when oriented to face upward, wherein the writing utensil includes: an advancing and retreating member including the retract piece on a front end side thereof and supported to advance/retreat relative to the writing utensil body; and rolling element supported to rotate without advancing/retreating relative to the writing utensil body, and an outer circumferential face of the rolling element contacts a side face of the advancing and retreating member.

Abstract: A writing utensil with a retract piece is provided, with this writing utensil being equipped with a retract piece that is provided on one end side of a shaft tube of a writing utensil body and that goes forward and assumes a projecting state by its own weight when oriented to face downward, and goes backward and assumes a retracting state by its own weight when oriented to face upward, wherein the writing utensil includes: an advancing and retreating member including the retract piece on a front end side thereof and supported to advance/retreat relative to the writing utensil body; and rolling element supported to rotate without advancing/retreating relative to the writing utensil body, and an outer circumferential face of the rolling element contacts a side face of the advancing and retreating member.