[Printers] Re: scanned images

[Seth David Schoen]

bunnie writes:

> As for the times, I would not be surprised if the time was set
> incorrectly on these machines. Do you happen to know how I can
> look up the current time on the machine? I didn't see a configuration
> option that was unlocked at the front panel that I could use to discover
> the current time setting in the copier. These Doc12's are just in a
> Fedex kinko's about five minutes from my house and it's a 24/7 shop
> so it's pretty easy to get access to them.

There's a chance that you can get date and time in a configuration page.
Some configuration pages have date and time in them.

A configuration page is also called (or, in a fancy printer, possibly
contrasted with) a test page, status page, or calibration page.

I also found some documentation for the Doc 12 on Xerox's site, which
suggests that the time can be entered through the menus if you have
enough privilege -- and says that it's used "on the cover page and on
job logs".  (No mention of forensic marks...)  So if you can somehow
arrange to get a cover page or a job log, the printer should include the
date and time.

Consistent with Patrick's claims, the configuration interface mentioned
in the Xerox documentation has only hours and minutes, not seconds.  So
the printer does know about as much date and time information as Patrick
says it's printing.

You can look up documentation at

http://www.support.xerox.com/go/prodselect.asp?Xcntry=USA

and see if you find anything useful.

The other thing is that, if you had a Doc 12 on a LAN, you could look at
traces of its network communications.  For example, the Doc 12 supports
HTTP; it might reveal what date and time it thinks it is in HTTP
protocol headers.

-- 
Seth Schoen
Staff Technologist                                schoen at eff.org
Electronic Frontier Foundation                    http://www.eff.org/
454 Shotwell Street, San Francisco, CA  94110     1 415 436 9333 x107