A printing system for printing an image on a web, comprising: a first printer for printing a first image on a web; and a second printer for printing a second image on said web without a printing plate, said second image being a continuous image, said web being fed from said first printer to said second printer; wherein said first printer prints pulse control marks on said web at regular intervals in accordance with said first image, said second printer comprises: a printing mechanism for performing printing in synchronization with recording synchronization pulses; and a mark detector for detecting said pulse control marks; and characterized in that a length of a portion of said web between said first printer and said second printer is constant, said second image is divided into pages in a printing direction which have uniform, lengths, and said pulse control marks are provided at positions corresponding to printing start positions of said pages, said second printer further comprises: a pulse adjuster for obtaining a difference between the number of recording synchronization pulses inputted to said printing mechanism in a period and the number of recording synchronization pulses estimated to be inputted to said printing mechanism in said period, to adjust a frequency of recording synchronization pulses to be inputted to said printing mechanism, for every page on the basis of said difference, said period being from a detection of a preceding pulse control mark by said mark detector to a detection of a succeeding pulse control mark. a first printer for printing a first image on a web; and a second printer for printing a second image on said web without a printing plate, said second image being a continuous image, said web being fed from said first printer to said second printer; wherein said first printer prints pulse control marks on said web at regular intervals in accordance with said first image, said second printer comprises: a printing mechanism for performing printing in synchronization with recording synchronization pulses; and a mark detector for detecting said pulse control marks; and characterized in that a length of a portion of said web between said first printer and said second printer is constant, said second image is divided into pages in a printing direction which have uniform, lengths, and said pulse control marks are provided at positions corresponding to printing start positions of said pages, said second printer further comprises: a pulse adjuster for obtaining a difference between the number of recording synchronization pulses inputted to said printing mechanism in a period and the number of recording synchronization pulses estimated to be inputted to said printing mechanism in said period, to adjust a frequency of recording synchronization pulses to be inputted to said printing mechanism, for every page on the basis of said difference, said period being from a detection of a preceding pulse control mark by said mark detector to a detection of a succeeding pulse control mark. a printing mechanism for performing printing in synchronization with recording synchronization pulses; and a mark detector for detecting said pulse control marks; and characterized in that a length of a portion of said web between said first printer and said second printer is constant, said second image is divided into pages in a printing direction which have uniform, lengths, and said pulse control marks are provided at positions corresponding to printing start positions of said pages, said second printer further comprises: a pulse adjuster for obtaining a difference between the number of recording synchronization pulses inputted to said printing mechanism in a period and the number of recording synchronization pulses estimated to be inputted to said printing mechanism in said period, to adjust a frequency of recording synchronization pulses to be inputted to said printing mechanism, for every page on the basis of said difference, said period being from a detection of a preceding pulse control mark by said mark detector to a detection of a succeeding pulse control mark.