Abstract: The problem to be solved by the present invention is to provide a coating composition that can reduce the heating temperature and shorten the heating time in the coating process, and that has excellent scratch resistance and weather resistance. The present invention provides a coating composition comprising a radically polymerizable unsaturated group-containing compound (A) and a hydroxyl-containing resin (B), the compound (A) being obtained by reacting a caprolactone-modified hydroxyalkyl (meth)acrylate with a polyisocyanate compound, and having an isocyanate equivalent of 300 to 3,800.

Abstract: A drum speed synchronization signal is transmitted for a predetermined length of time followed by a picture signal. Timing means are arranged to be triggered upon initiation of the synchronization signal to enable a drum speed synchronizer to receive the synchronization signal for a period of time which ends shortly before termination of the synchronization signal to positively prevent the picture signal from being erroneously received by the synchronizer. The timing means enables a printing element to receive the picture signals shortly after termination of the synchronization signal to positively prevent the synchronization signal from being erroneously reproduced.