Vertical plotter with an improved printing head

A vertical plotter having a writing head movable on a writing surface and comprising at least a gripping element to releasably clamp a stylus ink writing tool, an actuator configured to move the gripping element in a retracted position wherein the scribing tool is spaced from the writing surface and an advanced position wherein the scribing tool contacts the writing surface, a control unit (ECU) configured to control the actuator so as to draw one or more lines on the writing surface when the writing head moves, characterized by comprising a writing tool closure selectively movable between an open position wherein the gripping element is in the advanced position so that a writing tool tip (P) contacts the writing surface outside of the writing head and in a closed position wherein the gripping element is in a the retracted position and a recess is closed so as to establish a controlled environment for retarding a drying of the writing tool.