Abstract: A method of improving diagnosis of repetitive quality faults appearing in prints from a printer having rotating elements uses an internal test page that has a lead edge, a trail edge, a ruled margin, a reference mark at the start of the ruled margin adjacent the lead edge, and labeled characteristic marks spaced from the reference mark according to the circumference of the various rotating elements. A user prints the test page and places it atop a print that has a repetitive quality fault, with the reference mark aligned with a first occurrence of the fault. The label of the characteristic mark adjacent a second occurrence of the fault identifies the rotating element probably causing the fault which needs to be replaced.

Abstract: Upon particular occurrences, such as a page being printed, a printer job done, an error event or a passing of a day, data is recorded to non-volatile memory (NVRAM) to record data over time. Once a trigger event occurs such as an error, a pattern of occurrences of printer conditions, a passage of a certain amount of time, a number of pages printed, a POSTSCRIPT snippet sent, a user command or a command via the World Wide Web (WWW), an email is automatically sent to a number of email addresses selected by the user. The email contains specially formatted encoded data that was previously recorded over time upon an occurrence as described above.