Techniques for using multiple sampling frequencies to detect the location of touch inputs of a user at a touch panel of a touch device. Susceptible undesirable plants will be killed by this treatment, while non-susceptible desirable plants will not be adversely affected by this treatment. To print the substrate, the nozzles in the nozzle row of the inkjet printhead or of each inkjet printhead are actuated in such a way that that the differences in the nozzle to substrate travel time caused by the different distances between the nozzles in each row and the substrate to be printed are equalized or compensated. The inner and outer segments may be biased to return to the deployed configuration, and may comprise generally identical shapes in the deployed configuration wherein the outer segment is proportionally larger than the inner segment.