Figure 1 The number “16” from the Canon Inkjet (Left) and HP Inkjet (Right)

Figure 2 The letters “L. & W” from the Canon Inkjet (Left) and HP Inkjet (Right)

Figure 3 The number “16” from HP Laser (Left) and Canon Laser (Right).

Figure 4 The letters “L. & W” from HP Laser (Left) and Canon Laser (Right)

Figure 5 Some letters from dot-matrix receipt (Left) and check (Right).

Figure 6 Some numbers from dot-matrix receipt (Left) and check (Right).

Characteristics	Inkjet Printer	Laser Printer	Dot-Matrix Printer
Overall print quality	Low	High	Moderate
Appearance	Contains satellites of ink drop (Spur marks)	Glossy	Cluster of Dots
Contours	Rough with ups and downs	Clear	Moderate
Edge Roughness	Uneven and rough	Sharp and Refined	Rough
Inking Uniformity	Inconsistent; spotting present	Consistent and uniform	Mostly consistent

Table1 Differences between Inkjet, Laser and Dot-Matrix samples.