Methods and apparatus for providing wireless messages according to various tone plans can include a method of wireless communication. Each third electrode is provided on the heaters, and each second electrode is provided at a side portion of the heaters. Once in the block state, if the value of the CO metric does not decrease but continues to increase and exceeds a second higher threshold, the system enters a mute state. Conflicts between different printers retrieving the same job are either resolved by leader election, or preventing conflict by invoking the use within the spooler of a processor instruction known as TESTSET. The cross-talk between stereo images is reduced by using the light emitted from the light-source module, synchronously associating with the image displaying device.