been separated from their host fibers s and or ink particles which become loosened from their host fibers during their residence in the storage vessel appears to be advantageously altered as evidenced by the enhancement of their removal from the pulp in the course of cyclone separator processing of the pulp post storage storage periods of the filtrate in the storage vessel may vary from about 30 minutes to about 24 hours lesser residence times within the storage vessel do not appear to be effective in enhancing the subsequent treatment of the filtrate while residence times longer that about 24 hours do not appear to be necessary to achieve the enhanced reduction in dirt count of the pulp obtained by the present method and in any event such longer residence times tend to provide unacceptable cost to benefits ratios no agitation of the pulp within the storage vessel is necessary at the end of the desired storage period the filtrate is fed into and through a cyclone separator wherein the fibers are separated from the ink particles by centrifugal action in practice based upon the design flow rate of the pulp from the storage vessel among other factors there may be employed multiple even hundreds of the cyclone separators operating in parallel reference is made to u s pat no 3 635 788 for a description of a suitable cyclone separator and its method of operation basically.