TEM (a, b, and c) images of prepared mesoporous silica nanoparticles with mean outer diameter: (a) 20nm, (b) 45nm, and (c) 80nm. SEM (d) image corresponding to (b). The insets are a high magnification of mesoporous silica particle.
The Definition of a Monochrome Laser Printer. Monochrome laser printers are machines that print text and images from computers by using a laser beam to control where a single color is applied to paper. They're often faster than other types of printers and can generally produce large numbers of black-and-white documents cheaper than other printers.
High-priced laser printers are a thing of the past. Laser printers are more affordable than ever and now represent the speed you'd expect from a laser printer with the print quality you want from an inkjet. This combination of speed and quality make color and monochrome laser printers great for your small business or home office setting.