Abstract
In order to study influence of the variation of both viscosity and tack of the ink on the ink–transferring ratio. viscosity reducer and varnish to adjust ink viscosity and tack , the influence of the volume on tack volume and viscosity are obtained and also the influence of on the ink-transferring ratio by vatiation of the tack volume and viscosity . The results show that , the viscosity and tack of ink are both decrease with the amount of varnish and viscosity reducer increase. But varnish has a little effect on tack. Adding different proportion of varnish, ink-transferring ratio will reach best when the proportion of varnish is 2%. when addition more than 4%,the ink-transferring ratio will decrease instead. Adding different proportions of viscosity reducer, ink-transferring ratio will reach best when the proportion of viscosity reducer is 4%. When the amount of viscosity reducer more than 6%,the ink-transferring ratio will reduce instead.
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