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.
When we print black and white documents for daily use, i.e the paper is white, the printer will use merely the black ink cartridges. However, most printer heads of the inkjet printers will do self-cleaning procedure and it cost a little color ink. Besides, if you are adjusting the background color for the printing, which means your paper is not pure white, then the color ink may be used (e.g 8 colors type of epson printer etc.).