Laser Printer Duplexer

Working of Laser Printers

Laser Printers are commonly used printers that are known for its rapid printing abilities. The other marked feature of a laser printer is the high quality text and graphics printing. It works basically on the principle of xerographic printing process. However, it is different from the analog photocopying machines in which the image produced is the result of direct scan of a laser beam on the photoreceptor of the printer.

Using a laser printer has a number of advantages over any other types of printers available. The speed of a laser printer varies from one model to another as it depends on a number of factors like the graphic intensity required in processing the job and others. The latest models of laser printers can print more than 200 single color pages in one minute, which is more than 12 thousand pages in an hour! The color laser printers are relatively slower, but even they can print at more than 100 pages per minute. The high speed laser printers are generally used for printing of mass mailings like utility or credit card bills etc.

The cost incurred in using the laser printing technology is dependent on more than one feature such as the cost of the toner, paper, once in a while replacement of the drum, and change required in other consumable parts of the printer like transfer assembly and the fuser assembly. Laser printers having drums made of soft plastic can be costlier in the long run than one can comprehend; its high overall cost becomes apparent only when the printer requires a drum replacement.

Another feature in the family of laser printers is the duplexing model. This allows printing on both sides of a paper without the need to remove the paper at all. This technology can cut paper cost directly into half and also lessen the filling volumes. Formerly, the duplexing technology was available only on the high-end laser printers. However, now they can be seen on a number of mid-range office laser printers. Although, the duplexing technology can reduce the printing speed to some extent as the paper path length increases.

The dot-matrix and inkjet printers take the incoming spooled data for the printer and directly print that on the paper making it a slow process which can stop as soon as the printer is waiting for more data. On the other hand, a laser printer cannot work this way, the reason being the large amount of data required to output to the printer in a continuous fashion. The printer cannot wait for data arrival and if that happens, there can be gaps and misalignment on the page.

To take care of the above problem, a printer buffer is used. The data is built up and kept in the large printer buffer that is generally present in the printer. This data bank is large enough to account for every single dot that can be printed on a page. However, this requirement of storing the dots in the memory before printing can begin has limited the printing capability of laser printers to small size like A4 or A3. Most laser printer cannot print long banners as there is no memory to hold that amount of data.

The printing takes place in seven steps. A Raster Image Processor scans the entire page line by line and stores a bitmap of the page in the raster memory. The drum is then charged negatively and the bitmap is written on the photosensitive drum using a laser beam whose functionality is dependent on the bitmap image. The charged toner particles are charged negatively and wherever the laser has not discharged the drum, the charges will repel and printing won`t take place, hence creating the required print out. The toner contains a plastic powder that is attracted to the parts where the laser beam hit and in the end the plastic powder is fused at 200 degree Celsius to bond the ink with the paper.

About the Author

This article can be accessed in portuguese from the Article section of page www.polomercantil.com.br/impressora.php
Roberto Sedycias works as IT consultant for www.PoloMercantil.com.br

Brother / Color Laser Printer w/Duplexer / HL-4570CDW $523.11 Brother - Color Laser Printer w/Duplexer - HL-4570CDW

Brother International HL4570CDW Color Laser Printer with Duplexer $774.48 HL4570CDW HighPerformance Color Laser Printer with Duplexer and wireless Networking. Prints up to 30ppm in color and black . Up to 2400 x 600 dpi. 250 sheet input capacity. 50 sheet multipurpose tray. 64MB Memory

KonicaMinolta A0VT012 Duplexer w/ attachment $200.03 Automatic Duplexer with Attachment (1650EN and 1690MF). Includes attachment which raises the printer height to accommodate the duplexer.

Konica Minolta Duplexer for 1650EN and 1690MF Printer $85.99 9 lb Konica Minolta Magicolor Printers: 1650EN 1690MF Note: Requires (A0VP012) Lower Feeder unit to raise the printer height to accommodate the duplexer. A0VT011 Auto Duplexing Duplexer for 1650EN and 1690MF Printer Konica Minolta Plain Paper www.konicaminolta.us

KonicaMinolta A0VT011 Duplexer for 1650EN amp; 1690MF $142.47 Automatic Duplexer (1650EN and 1690MF) Requires (A0VP012) Lower Feeder unit to raise the printer height to accommodate the duplexer.

Samsung CLP-315 Laser Printer $200.99 1 1 x Cassette 150 Sheet 1 x Output Tray 100 Sheet 10 lb 12.30" 15.30" 150 sheets 17 20000 pages per month 2400 x 600 dpi 32 MB 360 MHz 4 9.60" Color laser printer with manual duplexer prints 17 black/white pages per minute and four color pages per minute with 2400 x 600 dpi. First black/white page is out in less than 14 seconds from ready mode. First color page is out in 26 seconds from ready mode. NO NOIS print engine technology delivers quiet operation and uses easy-to-change toner cartridges. Laser printer features SPL-C (SAMSUNG Printer Language Color), manual duplex, 150-sheet input tray, 32MB memory and 360MHz processor. Compatible with Windows and MAC. Weighs 24.3 lb. Energy Star qualified. Custom Media Sizes: 3" x 6.3" to 8.5" x 14" CLP CLP-315 CLP-315 Laser Printer Card Stock Color Custom Size Desktop Energy Star Envelope Glossy Paper Label Laser Printer Letter Mac Manual PC Photo Print Plain Paper Pre-punched Paper Preprinted Paper Recycled Paper SPL-C Samsung Transparency Yes www.samsungusa.com

Brother HL-5370DW Laser Printer $240.99 1 1 Year Limited 1 x Input Tray 250 Sheet 1 x Multipurpose Tray 50 Sheet 1 x Output Tray 150 Sheet 120 V AC 1200 x 1200 dpi 14.60" 15.10" 2 21 lb 300 MHz 300 sheets 30000 pages per month 32 32 MB 4 512 MB 800 sheets 9.70" HL-5370DW Laser Printer 1 x Black Toner Cartridge 1 x Drum Unit Custom Media Sizes: Width: 2.75 - 8.5" Length: 4.57 - 16" Wireless network-ready HL-5370DW offers a flexible solution for desktop users and small connected workgroups. Convenient fold-down, 50-sheet multipurpose tray and rear paper exit provide a straight-through paper path for printing envelopes, thicker media and custom paper sizes. Connectivity includes a built-in wireless 802.11b/g and Ethernet network interfaces. The monochrome laser printer prints 32 pages per minute with up to 1200 x 1200 dpi. Printer offers an automatic duplexer for two-sided documents, 32MB memory, 300 MHz processor, 250-sheet input tray and a 50-sheet multipurpose tray. First page is out in less than 8.5 seconds. Standard interfaces include 10/100 Base-TX Ethernet, Parallel, and Hi-Speed USB 2.0. Printer driver is compatible with Windows, Mac OS and Linux. Energy Star qualified. A4 A5 A6 AC Supply Automatic B5 B6 Bond Paper Brother Brother Industries, Ltd Custom Size DDR Desktop Energy Star Envelope Epson FX Executive Fast Ethernet HL HL-5370DW HL-5370DW Laser Printer IBM ProPrinter Label Laser Printer Legal Letter Mac Monochrome PC PCL 6 Plain Paper Plain Paper Print PostScript 3 Transparency Yes www.brother-usa.com

Lexmark E260DN Monochrome Laser Printer with Networking and Duplex Printing. Each $187.08 Manufacturer: Lexmark. Each. Integrated duplexer cuts paper use and costs. User-friendly control panel makes printer setup a since and gets you back to work fast. Printer produces professional-quality prints with sharp laser text. Fast fuser warm-up has y

HP LaserJet Duplexer Auto Duplex Unit For P4010 And P4515 Series Printer CB519A $326.23 HP LaserJet Duplexer Auto Duplex Unit For P4010 And P4515 Series Printer CB519A

HP Hardware CB519A HP LaserJet Automatic Duplexer $477.8 HP LaserJet Automatic Duplexer for TwoSided Printing Do you need to print something back to back like a flyer? Want to save money by using both sides of the page? Just attach this duplexer to the back of your LaserJet P4014 or P4515 series printer.

Printer,Micr Laser $376.99 PRINTER,MICR LASER

Konica Minolta A0VT011 Duplexer for 1650EN and 1690MF Magicolor Printers $142.47 The Konica Minolta A0VT011 is a Duplexer for 1650EN 1690MF Printer. It requires (A0VP012) Lower Feeder unit to raise the printer height to accommodate the duplexer. Compatibility: Konica Minolta Magicolor Printers 1650EN 1690MF. Type :Auto Duplexing. Media: Type Plain Paper

HL 5370DW - printer - laser $331.99 Brother HL-5370DW - Printer - laser - USB

HP CB519A LaserJet Automatic Duplexer for Two-sided Printing, Black. Each $361.17 Manufacturer: HP. Each. CB519A LaserJet Automatic Duplexer for Two-sided Printing, Black Customers also search for: Printers; Printing; Computer Printer; Computer Equipment, Discount CB519A LaserJet Automatic Duplexer for Two-sided Printing, Black, Buy CB

Okidata 43347501 Automatic Duplexer for Two-sided Printing, Beige. Each $201.47 Manufacturer: Okidata. Each. 43347501 Automatic Duplexer for Two-sided Printing, Beige Customers also search for: Printers; Printing; Computer Printer; Computer Equipment, Discount 43347501 Automatic Duplexer for Two-sided Printing, Beige, Buy 43347501 Au

Okidata 70047804 Automatic Duplexer for Two-sided Printing, Beige. Each $226.12 Manufacturer: Okidata. Each. 70047804 Automatic Duplexer for Two-sided Printing, Beige Customers also search for: Printers; Printing; Computer Printer; Computer Equipment, Discount 70047804 Automatic Duplexer for Two-sided Printing, Beige, Buy 70047804 Au

Lexmark 34S0300 E260Dn Monochrome Laser Printer $416.67 Integrated duplexer cuts paper use and costs. Userfriendly control panel makes printer setup a since and gets you back to work fast. Printer produces professionalquality prints with sharp laser text. Fast fuser warmup has you printing in less than 10 seconds after power up. EcoMode reduces power consumption while Quiet Mode reduces noise emission. Frontloading toner cartridges makes ink replacement easy. Maximum Print Speed (Black): 35.0 ppm. Network Ready: Yes. Printer Type: Laser. Network Capable: Yes. PC Free Printing: No. Maximum Memory [Nom]: 160 MB. Operating System Compatibility: Linux: Linpus Linux Desktop 9.3 9.3 Red Hat Enterprise Linux WS 3.0 4.0 5.0 SUSE Linux Enterprise 8.0 9.0 Desktop 10 openSUSE 10.2 10.3 11.0 Linspire Linux 6.0 Red Flag Linux Desktop 5.0 6.0 Mac OS 9.x OS X Novell Open NetWare 5.x 6.x UNIX: Sun Solaris x86 10 HPUX 11.11 11.23 11.31 IBM AIX 5.2 5.3 6.1 Windows 2000 2003 2003 x64 Vista Vista x64 2008 2008 x64. Processor [Nom]: 400.0 MHz. Paper Feeder Type: Feeder Tray Manual Feed. Connector/Port/Interface: Ethernet USB. Global Product Type: PrintersLaser. Borderless Printing: No. Maximum Paper Size: 8 1/2 in x 14 . Compliance Standards: ENERGY STAR Qualified. Network Ready: Yes. Network Types: 10/100BaseTX Ethernet. Maximum Print Speed (Black) [Nom]: 35.0 ppm. Height [Nom]: 14 . Depth [Nom]: 16 1/2 . Width [Nom]: 15.90 . Duplex Printing: Automatic. Monthly Duty Cycle (Pages) [Nom]: 50000. LCD Display: No. Standard Memory [Nom]: 32.0 MB. Print Resolution (Black) (Width x Height): 1200 x 1200 dpi. Paper Input Capacity (Sheets) [Nom]: 250. Printer Type: Laser. First Page Out [Nom]: 6.5 sec.

Laser Printer 1130 - printer - B/W - laser $94.99 Dell Laser Printer 1130 - Printer - B/W - laser - Letter - up to 19 ppm - capacity: 250 sheets

Respironics Laser Printer $897.99 Laser Printer for use with Alice Sleep Stations.

C - printer - color - laser $1189.99 Lexmark C - Printer - color - laser - USB

SAMSUNG ML-3750ND Mono Laser Printer $469 SAMSUNG ML-3750ND Mono Laser Printer

Samsung / Monochrome Laser Printer / ML-2955DW $115.2 Samsung - Monochrome Laser Printer - ML-2955DW

Samsung / Network Laser Printer / ML-3312ND $175.64 Samsung - Network Laser Printer - ML-3312ND

Canon / Laser Multifunction Printer / 4509B020AA $250.97 Canon - Laser Multifunction Printer - 4509B020AA

Samsung / Laser Multifunction Printer / SCX-4835FR $448.43 Samsung - Laser Multifunction Printer - SCX-4835FR

Samsung / Color Laser printer / CLP-325W $231.13 Samsung - Color Laser printer - CLP-325W

Samsung / Laser Multifunction Printer / SCX-5639FR $542.64 Samsung - Laser Multifunction Printer - SCX-5639FR

Brother / Color Laser Printer / HL-4570CDWT $617.13 Brother - Color Laser Printer - HL-4570CDWT

Canon / Laser Multifunction Printer / 3920B003AA $522.39 Canon - Laser Multifunction Printer - 3920B003AA

Samsung / Monochrome Laser Printer / ML-3712DW $336.73 Samsung - Monochrome Laser Printer - ML-3712DW

Samsung / Network Laser Printer / ML-3712ND $283.94 Samsung - Network Laser Printer - ML-3712ND

Lexmark C734DN Laser Printer 25C0351 $933.64 Lexmark C734DN Laser Printer 25C0351

Lexmark CS736DN Laser Printer 25A0490 $1216.71 Lexmark CS736DN Laser Printer 25A0490

Xerox Phaser 3600N Laser Printer $466.72 Xerox Phaser 3600N Laser Printer

Xerox Phase 5550N Laser Printer $2561.53 Xerox Phase 5550N Laser Printer

Lexmark T652DN Laser Printer 30G0200 $1247.75 Lexmark T652DN Laser Printer 30G0200

Lexmark T650DN Laser Printer 30G0106 $934.87 Lexmark T650DN Laser Printer 30G0106

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