Provided is a ballpoint pen refill including: an ink storage tube made of a synthetic resin and storing an ink thereinside; a ball holder made of a synthetic resin and attached to a distal end of the ink storage tube; a ball pressing rod mounted inside the ball holder; and a writing ball stored in a distal end of the ball holder and having a rear end side held by the ball pressing rod, in which the ball pressing rod includes: a fixing portion fixed to the ball holder; a movable portion slidable in a front-rear direction with respect to the ball holder; a compression portion connecting the fixing portion and the movable portion; and a rearward movement restricting portion protruding from a distal end of the fixing portion and provided with a gap from a rear end of the compression portion.

Provided is a ballpoint pen refill including: an ink storage tube made of a synthetic resin and storing an ink thereinside; a ball holder made of a synthetic resin and attached to a distal end of the ink storage tube; a ball pressing rod mounted inside the ball holder; and a writing ball stored in a distal end of the ball holder and having a rear end side held by the ball pressing rod, in which the ball pressing rod includes: a fixing portion fixed to the ball holder; a movable portion slidable in a front-rear direction with respect to the ball holder; a compression portion connecting the fixing portion and the movable portion; and a rearward movement restricting portion protruding from a distal end of the fixing portion and provided with a gap from a rear end of the compression portion.

A writing instrument such as a pen or stylus, that is capable of writing contemporaneously in different physical characteristics, such as color and visual appearancethat is, without the need to switch out different cartridges to write in different characteristics; as well as to an ink device for such a writing instrument, such as a multi-cartridge tip having multiple nibs, where the multiple nibs can be used to write on a substrate contemporaneously. A writing instrument herein can be configured to write at a substantially perpendicular angle to the substrate, or slightly angled for ease of a user's hand position. A writing instrument that encompasses both electronic and manual (ink) features is also contemplated.

A writing instrument such as a pen or stylus, that is capable of writing contemporaneously in different physical characteristics, such as color and visual appearancethat is, without the need to switch out different cartridges to write in different characteristics; as well as to an ink device for such a writing instrument, such as a multi-cartridge tip having multiple nibs, where the multiple nibs can be used to write on a substrate contemporaneously. A writing instrument herein can be configured to write at a substantially perpendicular angle to the substrate, or slightly angled for ease of a user's hand position. A writing instrument that encompasses both electronic and manual (ink) features is also contemplated.

A writing instrument such as a pen or stylus, that is capable of writing contemporaneously in different physical characteristics, such as color and visual appearancethat is, without the need to switch out different cartridges to write in different characteristics; as well as to an ink device for such a writing instrument, such as a multi-cartridge tip having multiple nibs, where the multiple nibs can be used to write on a substrate contemporaneously. A writing instrument herein can be configured to write at a substantially perpendicular angle to the substrate, or slightly angled for ease of a user's hand position. A writing instrument that encompasses both electronic and manual (ink) features is also contemplated.

A writing instrument such as a pen or stylus, that is capable of writing contemporaneously in different physical characteristics, such as color and visual appearancethat is, without the need to switch out different cartridges to write in different characteristics; as well as to an ink device for such a writing instrument, such as a multi-cartridge tip having multiple nibs, where the multiple nibs can be used to write on a substrate contemporaneously. A writing instrument herein can be configured to write at a substantially perpendicular angle to the substrate, or slightly angled for ease of a user's hand position. A writing instrument that encompasses both electronic and manual (ink) features is also contemplated.

The present technology relates to a writing instrument such as a pen or stylus, that is capable of writing contemporaneously in different characteristics, such as color and visual appearancethat is, without the need to switch out different cartridges to write in different characteristics; as well as to a writing instrument having multiple nibs, where the multiple nibs can be used to write on a substrate contemporaneously. A writing instrument herein can be configured to write at a substantially perpendicular angle to the substrate, or slightly angled for ease of a user's hand position. A writing instrument that encompasses both electronic and manual (ink) features is also contemplated.