前言染印法彩色拷贝是用浮雕片吸收染料,通过迭印(浮雕片与空白片相贴合),使染料转移到空白片上,形成彩色染料影像而制成的。当浮雕片与空白片贴合时,不仅产生染料从浮雕片向空白片的扩散过程,而且也可能产生(实际上也确实产生)空白片中的媒染剂向浮雕扩散的过程,我们称之为“反 Preface Dyeing method Coloring is the use of embossing dyes to absorb the dye, by superimposed printing (embossing film with the blank film phase), the dye transfer to a blank film, the formation of color dye images and made. When the embossed sheet is attached to the blank sheet, not only does the diffusion of the dye from the embossed sheet to the blank sheet occur, but it may also occur (and indeed occur) that the mordant in the blank sheet diffuses to the relief, which we call "anti