How does photocopier work ?
Generally, digital photocopiers are not all that different in cycle compared with analogue copiers when you consider the printing component of delivering a duplicate. In any case, there are usually two sorts of printing mechanisms in copiers which are inkjet and laser.
For one or the other kind, digital copiers can be considered as having a laser scanner unit to duplicate and digitize the first, and a printer component with either of two mechanisms produces the duplicated copies. The scanning unit is the generally computerized part of an digital copier, and takes the accompanying cycle:
- The original document is placed on a transparent glass plate
- The user can use the digital control panel to control the number of copies, zoom ratio and other attributes
- After the user uses the “Start” button to start the copy process, use the paper tray to collect the copy paper from the paper tray and insert it into the paper conveyor, and turn on the fluorescent light or incandescent light under the glass at the same time
- The light emitted by the exposure lamp passes through the glass, shines on the strip of the original image, and reflects a part of the image to the mirror. In this way, the light moves along the document, lighting up part of the image at a time
- The CCD panel converts each image light into the information signal of each line of the grating
- The signal passes through the analogue-to-digital converter used in the raster image processor (RIP), which creates a raster image copy of the original image and stores it in memory
- Then, before starting copying, the raster image can be processed using the attributes set by the user and any other advanced image processing (such as orientation correction).
Digital copiers ‘memorize’ an image rapidly, and because of putting away it in memory, numerous duplicates can be created rapidly, as moving the lamp along the original image is the most tedious piece of the cycle. After any image preparing and image handling of is finished, the RIP yields the signal to the printing mechanism of the copier.
As for laser photocopiers, the signal is gone through a laser gun, which at that point goes about as the light source to extend each line of picture data onto the turning photosensitive drum to reproduce the picture on the drum as a plan of friction based electricity. This at that point follows a similar printing measure as a simple printer. This laser-actuated printing measure is additionally like what occurs in a laser printer.
In inkjet scanners, the RIP goes the sign through electrical hardware that controls the level development of the print head across the paper and the warmth to set the ink at the positions needed for each line, much the same as it accomplishes for inkjet printers.