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目前显示的是 七月, 2016的博文

What is the composition of printing ink?

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Printing is widely used in our society for transmitting and presenting information. This has resulted in printing being used on many different surfaces ranging from aluminium can and plastic bottles through to paper. Special inks have been developed for use in these different situations. Printing inks are made of four basic components: • Pigments - to colour the ink and make it opaque • Resins - which bind the ink together into a film and bind it to the printed surface • Solvents - to make the ink flow so that it can be transferred to the printing surface • Additives - which alter the physical properties of the ink to suit different situation. These are formulated into ink in a two steps process. Step 1 - Varnish manufacture Varnish is the clear liquid that is the base of any ink. Different varnishes are made for different inks, but they are all made by mixing the resins, solvents and additives (often at high temperatures) to form a homogeneous mixture. The resins ...

What is the composition of toner?

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Toner is a kind of powder that is used in laser photocopiers and printers to form the printed text and images on the paper, in general with a toner cartridge. Early types of toner were strictly carbon powder. Then, to improve the quality of the printout, the carbon was melt-mixed with a polymer. Toner particles are melted by the heat of the fuser, and are thus bonded to the paper. Fine powder and pigment compose the core elements of toner, though many other ingredients accent these basic components. Each toner cartridge contains varying ratios of ingredients, as per the individual needs of the copier. Toner Powder:  The powder mixture contained in a copier's toner cartridge is actually what the term "toner" refers to. Ultimately, toner powder is the main ingredient in copier toner. Before understanding why copier toner contains the ingredients it does, it's important to know how toner powder works. This extremely fine powder, which has a con...

Can I print black and white without using color toner?

When you print something, the program you're printing from (Notepad, Photoshop, whatever) first sends the data to a driver program that converts the thing you want to print into a type of printer language, like PostScript or PCL, and that set of instructions is then sent to the printer. While the color ink is not required for printing purposes, it do required for maintenance operations of the device.  For users who wish to print using just black ink (despite the reduced print quality), many HP printers offer options. Set your printer to print in grayscale mode to use only the black ink to produce the text and images on your printouts.  To select the grayscale printing option, please follow these steps: 1.  Click / Select 'START' from the bottom left of the Windows screen, then select DEVICES AND PRINTERS. 2.  Click your right mouse button on the listing for your PIXMA MX920 series printer, then select PRINTING PREFERENCES from the menu that appears. 3....

Some things you didn't know about "Toner Cartridges"

          What is toner anyway? Toner is a fine powdery substance made from pigment dyes (black, cyan, magenta or yellow and most recently white and clear - see www.emnvirotoneimaging.com/OKI) and small bits of fine plastic. Manufacturers use plastic in the toner mixture because it melts as the paper is passed through the fuser (which heats the mixture) to provide a sharp, lasting image on the paper. What is a remanufactured cartridge? A remanufactured toner cartridge is a cartridge that has been rebuilt using some components of a recycled toner cartridge, mixed with new parts. This allows manufacturers to recycle individual parts whilst only reusing the large core of the cartridge itself. Quality remanufactured cartridges, though purposefully given a bad name by OEM's in the name of eliminating competition, are essentially the same thing as the OEM name-brand cartridges. In fact, many OEM companies include return labels in their boxes - wha...