A pressurized-type writing implement includes: a shaft tube capable of housing therein a refill filled with a writing implement ink composition; and a pressurizing mechanism that applies a pressure to the writing implement ink composition; the pressurized-type writing implement being capable of switching a writing state in which a front end part of the refill projects from a front end opening of the shaft tube, and a not-writing state in which the front end part of the refill is retracted from the front end opening of the shaft tube, wherein the pressurized-type writing implement has a pressurizing-force adjusting mechanism that adjusts the pressure.

A pressurized-type writing implement includes: a shaft tube capable of housing therein a refill filled with a writing implement ink composition; and a pressurizing mechanism that applies a pressure to the writing implement ink composition; the pressurized-type writing implement being capable of switching a writing state in which a front end part of the refill projects from a front end opening of the shaft tube, and a not-writing state in which the front end part of the refill is retracted from the front end opening of the shaft tube, wherein the pressurized-type writing implement has a pressurizing-force adjusting mechanism that adjusts the pressure.

Disclosed is a knock-type pen, which includes: a housing having a -shaped guide groove formed at a top end thereof; a pen seam accommodated in the housing; a pressing member having a moving protrusion provided at a lower end thereof and movably inserted into the guide groove; a rotating member rotatably coupled to an outer circumference of the top end of the housing and having a l-shaped slide groove into which an end of the moving protrusion inserted into the guide groove is movably inserted; and a knock unit disposed between the pressing member and the pen seam and configured to allow an end of the pen seam to move in and out at a lower end of the housing when the pressing member is pressed.

Disclosed is a knock-type pen, which includes: a housing having a -shaped guide groove formed at a top end thereof; a pen seam accommodated in the housing; a pressing member having a moving protrusion provided at a lower end thereof and movably inserted into the guide groove; a rotating member rotatably coupled to an outer circumference of the top end of the housing and having a l-shaped slide groove into which an end of the moving protrusion inserted into the guide groove is movably inserted; and a knock unit disposed between the pressing member and the pen seam and configured to allow an end of the pen seam to move in and out at a lower end of the housing when the pressing member is pressed.

A pen for writing and/or drawing purposes, and having a shaft and a core which is arranged within the shaft and is axially adjustable in the longitudinal direction of the shaft between an active position and an inoperative position. The core is completely arranged within the shaft in the inoperative position and projects with an overhang from a front end of the shaft in the active position. An actuating element is provided which is movable perpendicularly to the longitudinal direction of the shaft between an active position and an inoperative position and which is operatively connected to the core via a connecting element in such a way that, during a movement of the actuating element perpendicularly to the longitudinal direction of the shaft between the inoperative position and the active position, the core is axially adjustable in the longitudinal direction of the shaft.

A pen for writing and/or drawing purposes, and having a shaft and a core which is arranged within the shaft and is axially adjustable in the longitudinal direction of the shaft between an active position and an inoperative position. The core is completely arranged within the shaft in the inoperative position and projects with an overhang from a front end of the shaft in the active position. An actuating element is provided which is movable perpendicularly to the longitudinal direction of the shaft between an active position and an inoperative position and which is operatively connected to the core via a connecting element in such a way that, during a movement of the actuating element perpendicularly to the longitudinal direction of the shaft between the inoperative position and the active position, the core is axially adjustable in the longitudinal direction of the shaft.

Disclosed is a thermochromic writing tool which includes a writing element including a reservoir in which thermochromic ink is retained, and a writing point portion which is disposed on a front end portion of the reservoir and from which the thermochromic ink is dischargeable; a barrel which is made of a resin and in which the writing element is accommodated so as to be movable in a longitudinal direction; a protruding and retracting mechanism including a push element made of a resin and disposed on a rear end portion of the barrel so as to be tiltable in a radial direction relative to an axis of the barrel; and a rub portion disposed on a rear end portion of the push element 5.

Disclosed is a thermochromic writing tool which includes a writing element including a reservoir in which thermochromic ink is retained, and a writing point portion which is disposed on a front end portion of the reservoir and from which the thermochromic ink is dischargeable; a barrel which is made of a resin and in which the writing element is accommodated so as to be movable in a longitudinal direction; a protruding and retracting mechanism including a push element made of a resin and disposed on a rear end portion of the barrel so as to be tiltable in a radial direction relative to an axis of the barrel; and a rub portion disposed on a rear end portion of the push element 5.

Various embodiments provide a position pointer that includes a plurality of refill bodies that can be configured at low cost, and ensures freedom from malfunction during exchange of signals with a sensor section of a position detection device. In one embodiment, the position pointer includes a tubular housing having an opening portion, a plurality of refill bodies, a refill body selection mechanism section that selectively causes at least a tip of one of the plurality of refill bodies to project from the opening portion, a magnetic material core, and a coil wound around the magnetic material core. The refill bodies not selected by the refill body selection mechanism section are located away from a through hole of the magnetic material core.

Various embodiments provide a position pointer that includes a plurality of refill bodies that can be configured at low cost, and ensures freedom from malfunction during exchange of signals with a sensor section of a position detection device. In one embodiment, the position pointer includes a tubular housing having an opening portion, a plurality of refill bodies, a refill body selection mechanism section that selectively causes at least a tip of one of the plurality of refill bodies to project from the opening portion, a magnetic material core, and a coil wound around the magnetic material core. The refill bodies not selected by the refill body selection mechanism section are located away from a through hole of the magnetic material core.