printing and copying centers have been implicated as an emission source of pollution, and affecting air quality in closed environments. the aim of this study was to measure the btex compound (benzene, toluene, ethyl benzene, and xylenes), and the intensity of electromagnetic fields and the uva ray in photocopy centers in the hamadan city. this descriptive study was done on 45 printing and copyi...

Microscopical reflection-absorption by infrared spectroscopy (R-A IR) was shown as a viable technique for analyzing the polymer resins contained in dry, black photocopy and printer toners. The sampling technique involves a heat transfer of the toner from a document to the reflective surface of aluminum foil followed by analysis by R-A IR. The technique is simple, fast, and readily available to ...

Maintaining the printing configuration files for a large site (400 machines, 60 public printers, 40 private printers, 30 print spoolers) can be a major job. At RPI, we developed a system that will automatically generate the printer configuration file for any machine, depending on what printers are driven by that machine. It also allows us to only have a printer appear only on a subset of machin...

Identifying the originating device for a given media, i.e. the type, brand, model and other characteristics of the device, is currently one of the important fields of digital forensics. This paper proposes a forensic technique based on the Benford’s law to identify the printer’s brand and model from the printed-and-scanned images at which the first digit probability distribution of multi-size b...