断⾯形状を三⾓形にすることで、３本の指の間にできる３つの隙間にリフィルの収納スペースを確保し、ペンの中⼼からの距離が⼤きくなるのを回避することで持ち⼼地の良さを実現した。
また、ペン先の造形を、三⾓形の鉛筆を鉛筆削りで削ったような形状にすることで、ペン先近くで持つ⼈から少し⾼い位置で持つ⼈まで広く適応させることを⽬指した。
Triangular 3-color ballpoint pens have a unique design that makes them stand out. The triangular shape ensures that the three gaps between the three fingers are secured to accommodate the refill. This design also reduces the distance from the center of the pen, which makes it comfortable to hold. Another beneficial feature is that the tip of the pen is shaped like a pencil sharpener, which allows it to be used from the holder near the tip to the holder at a slightly different position.
Photo / Ryumon Kagioka
また、ペン先の造形を、三⾓形の鉛筆を鉛筆削りで削ったような形状にすることで、ペン先近くで持つ⼈から少し⾼い位置で持つ⼈まで広く適応させることを⽬指した。
Triangular 3-color ballpoint pens have a unique design that makes them stand out. The triangular shape ensures that the three gaps between the three fingers are secured to accommodate the refill. This design also reduces the distance from the center of the pen, which makes it comfortable to hold. Another beneficial feature is that the tip of the pen is shaped like a pencil sharpener, which allows it to be used from the holder near the tip to the holder at a slightly different position.
Photo / Ryumon Kagioka
