Посмотрите на printThis .Он поставляется с несколькими опциями, такими как загрузка css.
$("#mySelector").printThis({
debug: false, // show the iframe for debugging
importCSS: true, // import page CSS
importStyle: false, // import style tags
printContainer: true, // grab outer container as well as the contents of the selector
loadCSS: "path/to/my.css", // path to additional css file - use an array [] for multiple
pageTitle: "", // add title to print page
removeInline: false, // remove all inline styles from print elements
printDelay: 333, // variable print delay
header: null, // prefix to html
footer: null, // postfix to html
base: false , // preserve the BASE tag, or accept a string for the URL
formValues: true, // preserve input/form values
canvas: false, // copy canvas elements (experimental)
doctypeString: "...", // enter a different doctype for older markup
removeScripts: false, // remove script tags from print content
copyTagClasses: false // copy classes from the html & body tag
});