A pen holding device configured to hold an electronic pen which has a first core that is elongated and is replaceable. The pen holding device includes a casing having an electronic pen holder that is configured to hold the electronic pen in an erect state or a laid state, and at least one refill core holder which is provided inside the casing and is configured to grasp a second core, which is a refill core for the electronic pen, in a direction different from a longitudinal direction of the electronic pen when the electronic pen is held in the erect state.

A pen holding device configured to hold an electronic pen which has a first core that is elongated and is replaceable. The pen holding device includes a casing having an electronic pen holder that is configured to hold the electronic pen in an erect state or a laid state, and at least one refill core holder which is provided inside the casing and is configured to grasp a second core, which is a refill core for the electronic pen, in a direction different from a longitudinal direction of the electronic pen when the electronic pen is held in the erect state.

A magnetic pen can be used with a magnetic panel. The magnetic pen includes a body with an end portion. A holder made of a magnetic material is attached to the end portion and an internal space is formed in the holder. A magnet having an S pole and an N pole is arranged in the internal space of the holder so that the S pole and the N pole are opposite the magnetic panel.

A system and method for training correct positioning and pressure of digits on a marking instrument helps teach correct positioning and pressure of digits on a marking instrument, and a correct marking angle of the marking instrument relative to a reference plane. The system provides an electronic marking instrument having pressure sensors that detect the position and a predetermined, uniform pressure from three digits. The marking instrument further comprises tilt sensor that measures the marking angle of the marking instrument to determine whether a predetermined marking angle, between 45 to 90 degrees has been achieved. A determination of a predetermined pressure by the digits, and a predetermined marking angle of the marking instrument actuates a marking portion on the marking instrument to enable marking. However, a determination of an improper position and pressure of the digits and orientation of the marking instrument deactivates the marking portion to restrict marking.

A system and method for training correct positioning and pressure of digits on a marking instrument helps teach correct positioning and pressure of digits on a marking instrument, and a correct marking angle of the marking instrument relative to a reference plane. The system provides an electronic marking instrument having pressure sensors that detect the position and a predetermined, uniform pressure from three digits. The marking instrument further comprises tilt sensor that measures the marking angle of the marking instrument to determine whether a predetermined marking angle, between 45 to 90 degrees has been achieved. A determination of a predetermined pressure by the digits, and a predetermined marking angle of the marking instrument actuates a marking portion on the marking instrument to enable marking. However, a determination of an improper position and pressure of the digits and orientation of the marking instrument deactivates the marking portion to restrict marking.

There are provided a printing method and a printing apparatus for increasing visibility and printed matter printed using the printing method. The printing apparatus sprays a light-absorbing composition to form a light-absorbing layer on a print medium, and then sprays a color-variable composition on the light-absorbing layer to form a color-variable layer.

There are provided a printing method and a printing apparatus for increasing visibility and printed matter printed using the printing method. The printing apparatus sprays a light-absorbing composition to form a light-absorbing layer on a print medium, and then sprays a color-variable composition on the light-absorbing layer to form a color-variable layer.