CPC B43K 27/12 (2013.01) [B43K 29/08 (2013.01)] | 16 Claims |
1. A multifunction writing instrument comprising:
a body extending along an axial direction and receiving two or more retractable writing elements, the retractable writing elements comprising a writing tip, the retractable writing elements being movable between a writing position in which the writing tip extends from the body and a retracted position in which the writing tip is retracted within the body, and
an electronic unit configured to detect which retractable writing element is in the writing position, wherein the electronic unit comprises a wireless communication system and a total number of chips and switches that is the same as a total number of retractable writing elements; and
wherein the chip or the switch of a retractable writing element is electrically connected to the wireless communication system when the retractable writing element is in the writing position, and the chip or the switch of the retractable writing element is electrically disconnected from the wireless communication system when the retractable writing element is in the retracted position.
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