Printing steps of 3D Printer

Printing steps of 3D Printer
1	A design is made using CAD software
2	A software makes it in format acceptable to printer
3	3D printer is setup to allow printing
4	A solid object is built up layer by layer mainly 0.1 mm thick
5	Object is removed from printer and made ready for use

Scanning steps of 2D Scanner

Scanning steps of 2D Scanner
1	Cover is raised, Document  is placed on glass and cover is closed
2	Document is illuminated with light
3	A scan head scans the page and send image to a lens using a series of mirrors
4	The image falls on Charged Couple Device (CCD) made up of light sensitive pixels.
5	Each pixel creates an electric charge when light falls on it, which means image is changed into electronic form
6	A software produces digital image from electronic form

Printing steps of Laser Printer

Printing steps of Laser Printer
1	Data is sent to driver of printer
2	Driver checks if format is acceptable
3	Driver then checks the status of printer, whether it is in ready status
4	Data is then sent to printer’s memory, buffer
5	Printing drum is positively charge, A laser beam scans across it leaving negative charge in areas matching the text to be printed
6	Drum is coated with positively charged tonner (powdered ink) so it sticks with negative charged areas.
7	Negatively charged sheet is rolled over the drum
8	The tonner on drum sticks to paper to print text/image exactly the one sent to printer
9	Charge on paper is removed to prevent paper sticking to drum
10	Paper is passed through fuser which is set of heated rollers to melt ink and permanently fix it to paper
11	A discharge lamp removes charges from drum to make it ready for print

Printing steps of Inkjet Printer

Printing steps of Inkjet Printer
1	Data is sent to driver of printer
2	Driver checks if format is acceptable
3	Driver then checks the status of printer, whether it is in ready status
4	Data is then sent to printer’s memory, buffer
5	Printer checks whether paper is available
6	The print head moves across the paper printing data by spraying ink droplets
7	At the end of each pass the paper is advanced to next line and so on until end of the page.
8	If buffer has more data then steps from stage  5 through 7 are repeated
9	When buffer is emptied an interrupt is sent to processor, the whole process is repeated until the whole document is printed