The present invention relates to an ink storage compartment. The nail comprises an elongate member having a longitudinal axis, a proximal end section, a distal end section and a solid central section extending between the proximal and distal end sections. It is based on a Single Frame Curve template generated early in the process and then used to draw every one of the frames in the lines drawing. In an additional or alternative embodiment, the residual current can be sensed and the amount of residual current used to trigger fetching of a compensation value.