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Printer Command Language, more commonly referred to as PCL, is a page description language (PDL) developed by Hewlett-Packard as a printer protocol and has become a de facto industry standard. Originally developed for early inkjet printers in 1984, PCL has been released in varying levels for thermal, matrix printer, and page printers. HP-GL and PJL are supported by later versions of PCL. PCL is occasionally and incorrectly said to be an abbreviation for ''Printer Control Language'' which actually is another term for Page description language. ==PCL levels 1 through 5 overview== PCL levels 1 through 5e/5c are command-based languages using control sequences that are processed and interpreted in the order they are received. At a consumer level, PCL data streams are generated by a print driver. PCL output can also be easily generated by custom applications. *PCL 1 was introduced in 1984 on the HP ThinkJet 2225 and provides basic text and graphics printing with a maximum resolution of 150 dpi (dots per inch). *PCL 1+ was released with the HP QuietJet 2227. *PCL 2 added Electronic Data Processing/Transaction functionality. *PCL 3 was introduced in 1984 with the original HP LaserJet. This added support for bitmap fonts and increased the maximum resolution to 300 dpi. Other products with PCL 3 support were the HP DeskJet ink jet printer, HP 2932 series matrix printers and HP RuggedWriter 2235 matrix printers. PCL 3 is still in use on several impact printers which replaced the obsolete HP models. *PCL 3+ (mono) and PCL 3c+ (color) are used on later HP DeskJet and HP PhotoSmart products. *PCL 3GUI is used in the HP DesignJet and some DeskJet series printers. It uses a compressed raster format that is not compatible with standard PCL 3. *PCL 4 was introduced on the HP LaserJet Plus〔 in 1985, adding macros, larger bitmapped fonts and graphics. PCL 4 is still popular for many applications. *PCL 5 was released on the HP LaserJet III〔 in March 1990, adding Intellifont font scaling (developed by Compugraphic, now part of Agfa), outline fonts and HP-GL/2 (vector) graphics. *PCL 5e (PCL 5 enhanced) was released on the HP LaserJet 4 〔 in October 1992 and added bi-directional communication between the printer and the PC and Windows fonts. *PCL 5c introduced color support on the HP PaintJet 300XL and HP Color LaserJet 〔 in 1992. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Printer Command Language」の詳細全文を読む スポンサード リンク
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