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Continuous ink system
A continuous ink system (CIS), also known as a continuous ink supply system, a continuous flow system, an automatic ink refill system, a bulk feed ink system, or an off-axis ink delivery system is a method for delivering a large volume of liquid ink to a comparatively small inkjet printhead. Many business and professional grade printers incorporate a continuous ink system in their design to increase printing capacity.
Some aftermarket companies also build retrofit accessories to convert certain models of consumer-grade printers into continuous flow systems. Such systems have been frowned upon by most printer manufacturers, as they have been seen as a threat to their business model of selling the printer itself as a loss leader and making their profit off replacement ink cartridges. Some manufacturers have issued lawsuits against aftermarket firms or implemented digital rights management measures in their devices.〔http://www.inkcloners.com/articles/Epson_Lawsuit_against_Online_Retailers.php〕 Some manufacturers have introduced new models featuring continuous ink systems. This was seen as a welcome move by users, especially small business owners who rely on bulk-printing solutions, like Internet cafes and small-scale print shops.〔(【引用サイトリンク】title=Epson brings us the L-series, world’s first genuine ink tank printer )〕
== Comparison to the tank-on-printhead design ==
Most low-cost consumer printers place small ink tanks directly on the carriage with the printheads. These tanks can have extremely small liquid volumes, as low as 10 mL, and consequently require frequent replacement. It should be also noted that every cartridge replacement is usually automatically followed by head-cleaning cycle of the printer to remove air bubbles from system, further reducing usable ink amount. More expensive, business-grade printers use progressively larger ink tanks on the printhead, but as the platen width and speed of the printer increases it eventually becomes impractical to have the tanks integrated with the printheads due to the high mass and inertia the liquid volume adds to the printheads and the reduced accuracy of printing that occurs.
Separating the ink storage from the printhead may also allow the tank to be refilled or replaced while a print job is in progress. With ink tanks located on the printhead, replacement typically requires repriming and alignment checks that necessarily require aborting any current print job. Separated ink tanks can be refilled or reprimed without disrupting a very large or expensive printing task, such as printing a 2 meter wide by 10 meter long outdoor banner.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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