Hence, when it is in contact with the drum, it gets attached with the areas that are positively charged, just like paper sticks to a charged balloon.The toner is nothing but a dry ink substance. A semiconductor material named selenium or germanium is used to coat the drum. .The toner is negatively charged. This is done to neutralize the positive charges from the light.As a result, the charges have become opposite i.4. Even distribution of such documents is preferred through digital technology than sending the actual piece of paper.2. Today, Photocopying machines are used on a large scale in almost every business, institutes and government offices.6. But still a photocopier is more convenient than a computer for creating a normal copy of a written document. If paper came out of the photocopier covered in dry toner it would just brush off, so the toner is heated to make it melt and to bind it to the paper. The light is then directed towards the drum, which is specially designed to make it photoconductive. the white areas of the picture have become neutral and the black areas have become positive.First and foremost, the surface of a drum is supplied with an electro-static charge produced by a high-voltage wire called a corona wire. Although, there has been automatic can sealing machine talk about the extinction of photocopiers as more and more people are embracing to digital technology for creation of important documents.The toner is then attracted onto a positively charged piece of paper.e.By 1980s, Photocopying machines gradually replaced copies made by carbon paper, mimeograph machines and other substitute products that were used at that time.Lets look at the working of a photocopier step by step:1. If will not be wrong to say that due to this usage preference the development of paperless offices was plastic can sealing machine prevented in the initial years of digital revolution.5.3.Secondly, a light (thin strips format) is beamed onto the image, which is only reflected by the white areas of the paper