Laser printing is an electrostatic digital printing process. It produces high-quality text and graphics by repeatedly passing a laser beam back and forth over a negatively charged cylinder called a "drum" to define a differentially charged image. The drum then selectively collects electrically charged powdered ink (toner), and transfers the image to paper, which is then heated to permanently fuse the text, imagery, or both, to the paper. As with digital photocopiers, laser printers employ a xerographic printing process. Laser printing differs from traditional xerography as implemented in analog photocopiers in that in the latter, the image is formed by reflecting light off an existing document onto the exposed drum.
The LaserWriter is a laser printer with built-in PostScript interpreter sold by Apple, Inc. from 1985 to 1988. It was one of the first laser printers available to the mass market. In combination with WYSIWYG publishing software like PageMaker, that operated on top of the graphical user interface of Macintosh computers, the LaserWriter was a key component at the beginning of the desktop publishing revolution.
Deskjet is a brand name for inkjet printers manufactured by Hewlett-Packard. These printers range from small domestic to large industrial models, although the largest models in the range have generally been dubbed DesignJet. The Macintosh-compatible equivalent was branded as the Deskwriter and competed with Apple's StyleWriter, and the all-in-one equivalent is called OfficeJet.
LaserJet as a brand name identifies the line of laser printers marketed by the American computer company Hewlett-Packard (HP). The HP LaserJet was the world's first commercially successful laser printer. Canon supplies both mechanisms and cartridges for most HP laser printers; some larger A3 models use Samsung print engines.
The StyleWriter brand is a line of inkjet serial printers by Apple, targeted mainly towards consumers. They produced print quality that was better than the dot matrix ImageWriters, and were cheaper than the LaserWriters. All but a few models contained Canon print engines, while the last few were re-badged HP DeskJet printers. When Steve Jobs returned to Apple in 1997, he discontinued most of the company's accessory product lines, including the StyleWriter and LaserWriter.
HP Jetdirect is the name of a technology sold by Hewlett-Packard that allows computer printers to be directly attached to a local area network. The "Jetdirect" designation covers a range of models from the external 1 and 3 port parallel print servers known as the 300x and 500x, to the internal EIO print servers for use with HP printers. The Jetdirect series also includes wireless print server models, as well as gigabit Ethernet and IPv6-compliant internal cards.
PC LOAD LETTER is a printer error message that has entered popular culture as a technology meme referring to a confusing or inappropriate error message. The error message's vagueness was mocked in the 1999 comedy film Office Space.
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, and page printers. HP-GL/2 and PJL are supported by later versions of PCL.
The HP LaserJet 2400 series was a line of grayscale laser printers sold by Hewlett-Packard. The printer was aimed at small and medium business use. It was the successor to the HP LaserJet 2300 series, and was in turn replaced by the HP LaserJet P3000 series.
The HP LaserJet 4 is a group of monochrome laser printers produced in the early to mid-1990s as part of the LaserJet series by Hewlett-Packard (HP). The 4 series has various models, including the standard LaserJet 4 for business use, the 4L for personal use and the 4P for small businesses. Additional models included the 4Si model, created as a heavy-duty business printer, and the 4V model, a B-size printer for desktop publishing and graphic artists. There are also PostScript variants of these machines with the '4M' designation, where M stands for, but is not limited to, usage with an Apple Macintosh. Hewlett-Packard also released an upgraded version of the LaserJet 4/4M known as the 4 Plus ('4+')/4M Plus ('4M+').
The NeXT Laser Printer [NeXT PN N2000] was a 400 DPI PostScript laser printer, sold by NeXT from late 1988 to 1993 for the NeXTstation and NeXTcube workstations and manufactured by Canon Inc. It included an adjustable paper tray, which enabled it to print on several paper sizes including A4, letter-size, and those of legal and envelope varieties. It was very similar to other printers based on the Canon SX engine, such as the Apple LaserWriter II series and HP LaserJet II/III, although those other printers only printed at 300x300 dpi. Some parts are interchangeable with the LaserJet II/III.
The Pentium Dual-Core brand was used for mainstream x86-architecture microprocessors from Intel from 2006 to 2009, when it was renamed to Pentium. The processors are based on either the 32-bit Yonah or 64-bit Merom-2M, Allendale, and Wolfdale-3M core, targeted at mobile or desktop computers.
The International DuraStar, is a product line of medium-duty trucks produced by Navistar International from 2001 to 2018. Introduced as the successor to the International 4000 series of 1989–2001, the 4000 series was renamed the DuraStar in 2008. Sharing it’s chassis with the medium-duty Ford F-Series, the International DuraStar competed against chassis cab vehicles derived from pickup trucks, such as the Freightliner M2 and the Hino 600, Developed as a Class 6-7 product range, the 4000/DuraStar was slotted below the 8000/TranStar regional-haul semitractor, with the Class 5 International TerraStar (2010–2015) serving as the smallest International conventional-cab product range.
The HP LaserJet 1020 is a low cost, low volume, monochromatic laser printer. It was a replacement for the HP LaserJet 1012. The production started in June 2005.
The Tektronix Phaser 740 was a series of color laser printers sold by Tektronix's printer division, now a part of Xerox. The Phaser 740 is notable for being the industry's first true 1200×1200 dpi color laser printer. The printer was available in several different configurations, from the 740L to the fully tricked out 740 Extended. The "plus" feature set was required for 1200×1200 color printing. Standard features included 10BASE-T Ethernet, LPT connectivity, SCSI connectivity, an expansion port for other networking options, 133 MHz PowerPC CPU, and PostScript. Network protocols included Telnet, FTP, AppSocket, IPP, HTTP, and AppleTalk. One upgraded the lowest model to the Extended functionality by adding components. A notable feature of this printer is its ability to accept PDF files directly, through FTP or Telnet. The onboard computer would then process the PDF to PS and print it. Phaser 740 series printers required little maintenance compared to other printers of the time. The only consumables were toner, fuser, imaging drum, and transfer roller.
HP X-Terminals are a line of X terminals from Hewlett Packard introduced in the early- to mid-1990s, including the 700/X and 700/RX, Envizex and Entria, and the Envizex II and Entria II. They were often sold alongside PA-RISC-based HP 9000 Unix systems. The primary use case was connecting several graphical consoles to a single server or workstation to allow multiple users access the same (expensive) processing system from terminal systems. These X-Terminals all allowed high-resolution, color-graphics access to the main server from which they downloaded their operating system and necessary program files. All models featured limited expandability, in most cases additional I/O options for peripherals and memory for more programs or local storage. HP did not use its own PA-RISC platform for these systems, the first design used an Intel CISC processor, while all later systems used RISC platforms, first Intel i960 and later the popular MIPS.
The Laserjet 2300 series was a line of grayscale laser printers sold by Hewlett-Packard. The printer was aimed at small and medium business use. The printer utilizes DRAM memory technology and uses 32 MB standard memory, which is expandable to 288 MB. It is compatible with Microsoft Windows and Macintosh Operating System.
Armada is a discontinued line of business laptops by Compaq. They started as a more affordable version of the Contura line, but after that, they replaced Contura as a mainstream laptop line, and then the high-end Compaq LTE line were merged with Armada as a premium 7300 and 7700 sub-lines.
