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A Hewlett-Packard laser toner cartridge. A toner cartridge, also called laser toner, is the consumable component of a laser printer.Toner cartridges contain toner powder, a fine, dry mixture of plastic particles, carbon, and black or other coloring agents that make the actual image on the paper.
The outside of the drum is covered in screens and the inside is coated in ink. The screens make sure the ink flow is regulated. The paper is fed to the drum, and the ink only comes through the master material where there are holes. A pressure roller presses the paper to the drum and transfers the ink to the paper to form the image.
A photocopier (also called copier or copy machine, and formerly Xerox machine, the generic trademark) is a machine that makes copies of documents and other visual images onto paper or plastic film quickly and cheaply.
The quality of third party toners can vary immensely, and it is also important that the toner is appropriate for the particular printer. Common problems can include: Insufficient lubricant in the toner, leading to drum, developer unit or cleaning blade damage. Wrong melting point, leading to fouling in the fusing unit, print rubbing off, etc.
The single-drum machine used a single drum for ink transfer to the stencil, and the dual-drum machine used two drums and silk-screens to transfer the ink to the stencils. The single drum (example Roneo) machine could be easily used for multi-color work by changing the drum – each of which contained ink of a different color.
Magnification of color laser printer output, showing individual toner particles comprising 4 dots of an image with a bluish background. As the drum completes a revolution, it is exposed to an electrically neutral soft plastic blade that cleans any remaining toner from the photoreceptor drum and deposits it into a waste reservoir.