通过AJAX将Canvas标签生成的图像发送到CFDOCUMENT

I'm attempting to (1) generate an image via canvas, (2) convert it to an image file, (3) post that image file via ajax to a cfc and (4) render it in a CFDocument tag. At present I have the first three steps working, but when I render the PDF I get a messy string of data.I'm attempting to (1) generate an image via can