A drawing apparatus including a drawing head to which a drawing tool is mounted, the drawing tool drawing on a drawing object; a drawing testing portion having a drawing media on which an image is drawn by the drawing tool; and a control unit. The control unit interrupts drawing on the drawing object by the drawing tool and attempts drawing on the drawing media by the drawing tool in the drawing testing portion when the drawing on the drawing object by the drawing tool is not performed correctly.

A drawing apparatus is provided. In the apparatus plural drawing tools for applying ink on an object are held by plural drawing tool holding units respectively. A drawing unit takes one of the plural drawing tools from the plural drawing tool holding units to draw an image on the object. An imaging unit images an identification image, which includes first information representing colors of inks to be applied respectively by the plural drawing tools and second information representing an arrangement of the plural drawing tools held in the plural drawing tool holding units. A controlling unit controls the drawing unit to draw a design image having at least one color on the object, based on the first and second information included in the identification image and the color of the design image.

A drawing apparatus including a drawing head to which a drawing tool is mounted, the drawing tool drawing on a drawing object; a drawing testing portion having a drawing media on which an image is drawn by the drawing tool; and a control unit.

The control unit interrupts drawing on the drawing object by the drawing tool and attempts drawing on the drawing media by the drawing tool in the drawing testing portion when the drawing on the drawing object by the drawing tool is not performed correctly.

A decolorizing apparatus includes a translucent heater, a casing, and a controller. The translucent heater is configured to generate heat according to an applied voltage. The casing is configured to support the translucent heater. The controller is configured to apply a voltage to the translucent heater. The voltage is associated with a temperature at which a thermochromic colorant.

A drawing device for drawing an object on a workpiece using a pen includes a holder, a movement portion to move the holder, a rotation portion to rotate the holder, and a memory storing, for each of a plurality of line segments configuring the object, drawing data relating to a position and a length of the line segment, and angle data relating to a rotation angle of the holder. The drawing device acquires the drawing data and the angle data of a preceding line segment from the memory, rotates the rotation portion in accordance with the angle data, and draws the object by controlling the movement portion in accordance with the drawing data. The drawing device acquires the drawing data and the angle data of a subsequent line segment continuously subsequent to the preceding line segment, rotates, and draws the object in the same manner as the preceding line segment.