Scheme 1.
Design of the standard pdf document. Example of a vertical zone of measurements (column 1, yellow) and a horizontal zone of measurements (line 2, blue).
Figure 1
Measurement of the blank area of a character “o” with the aid of microscopy software.
Table 1
List of printers (and computers) that were used to print the samples.
| Printer | Computer | Comment |
|---|---|---|
| Xerox Phaser 6130 | Dell | 2 different printers/computers |
| Xerox Phaser 6130 | HP | 2 different printers/computers |
| Xerox Phaser 6280 | Dell | 4 different printers/computers |
| Xerox Phaser 6280 | HP | 2 different printers/computers |
| Xerox Phaser 6180 | Dell | |
| Oki C5950 | Dell | |
| HP Color Laserjet 4650 | Lian Li | |
| HP Color Laserjet 4650 | HP | |
| HP Color Laserjet 4650 | Antec | 2 different printers/computers |
| HP Laserjet 1018 | Digitec Tharsis | |
| HP Color Laserjet 1312 | Self-made design/model | |
| Brother HL 2040 | Medion | |
| Brother (no further model information) | Toshiba | |
| Lexmark C935 | HP | |
| Lexmark (no further model information) | HP | |
| Samsung CLX-3175 N | Plextor | |
| Samsung CLP-325 | Digitec Tharsis | |
| Samsung (no further model information) | HP |
Figure 2
Horizontal blank area profiles of Xerox printers and one OKI printer: Xerox 6130 (upper left); Xerox 6280 (upper right), Xerox 6180 (lower left), Oki C5950 (lower right). The same y-axis intercept was chosen to ease the comparability of the different profiles.
Figure 3
Horizontal blank area profiles of HP printers: HP Color Laserjet 4650 (left), HP Color Laserjet 1312 and HP Laserjet 1018 (right). The same y-axis intercept was chosen to ease the comparability of the different profiles.
Figure 4
Horizontal blank area profiles of Brother and Lexmark printers: Brother HL 2040 and Brother without further model information (left), Lexmark C935 and Lexmark without further model information (right). The average amount of deposited toner varies strongly within these four printers.
Figure 5
Horizontal blank area profiles of Samsung printers: Samsung CLX-1375 N, Samsung CLP325 and a Samsung printer without further model information.
Figure 6
Overall blank area values of all tested printers.
Figure 7
Overall blank area value standard deviations of all tested printers.