| 摘要 |
PURPOSE:To make it possible to carry out high speed recording of estimated concentration by estimating the heat regeneration state using a recording control clock period as a control unit of a recording power pulse width on the basis of the recording interval time common to respective lines and recording information pieces inherent to respective heat generating elements. CONSTITUTION:A recording interval time signal tw1-7 read out from a recording interval measuring memory 4 and a recording interval estimated time signal w are supplied in a comparator 5 to compare the intensities of signals tw1-7 and w with each other, and comparison results C1-7 are supplied to a parallel series register 7 and are supplied as comparison result series signals CS1-12 to filp-flops 81-32 through an OR gate 9. On the other hand, recorded information pieces D11-17, D21-27... of past lines renewed and memorized in a memory 10 are read out in repeated series in respective clock periods of a recording control clock h, and then imparted to the filp-flop 81-32. The output is then converted into a trigger signal Pt1-32 by an AND gate 111-32. This signal Pt1-32 is imparted to a heat-generating element 11-32 as a recording power pulse P1-32 through the AND gate 31-32. |
