I suggest you contact the people at ColorByte Software regarding your interests in ImagePrint.
There is an application called Audit Print for ImagePrint, which is logging such information you want.
Quote:
What is AuditPrint?
AuditPrint is a utility that will audit prints made with ColorByte’s ImagePrint software. (It will also
work with AutoPrint, the Hot Folder utility supplied with ImagePrint).
When a print job is audited, information about the job will be written to a text file, typically for billing
purposes. The text file can be in the form of a standard, tab delimited one, or a comma delimited
file suitable for importing into a database such as Microsoft Excel.
AuditPrint runs in the background, and is available for both Windows and Macintosh computers
currently running ImagePrint.
/Sven