Ink jet recording apparatus

In and ink jet recording apparatus comprising nozzle means for jetting an ink plume and for separating the ink plume into ink particles, meand for charging the ink particles issued from the nozzle means in accordance with the potential of electric signals including recording signals and phase detecting signals, means for deflecting the charged ink particles, senser means disposed at a predetermined position for sensing the ink particles charged in accordance with the phase detecting signals and for producing an output in accordance therewith, comparator means for comparing the output from said senser means with a predetermined value and for producing a comparator output, and phase control means for controlling the phase of separation of ink particles and the charging thereof in accordance with the comparator output, the improvement comprising means for detecting the recording condition in accordance with the comparator output, said detecting means including at least one of time comparison circuit means for indicating a disorder in the recording when the comparator output is produced for a predetermined period of time and frequency detecting means for detecting the number of outputs from said comparator means per a predetermined unit time for indicating a disorder in recording when the number of outputs of said comparator means per the unit time reaches a predetermined number.