The Swiss franc continued to tick lower against the dollar on Thursday alongside a weakening euro, with the single currency buffeted by the deepening Italian debt crisis which has begun to eclipse the Greek debt saga. The franc fell 0.1 percent against the dollar compared to the New York close to trade at 0.9095 by 0936 GMT. The franc was 0.1 percent higher against the euro at 1.2303 francs per euro.