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Bit depth |
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Each pixel in an image contains the number of bits required to save/capture information about the image. The higher the depth, the more colors are stored in the image.
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For example: a low bit-depth (1 bit) can only show two colors: black and white. This is because there are only two combinations of numbers in one bit: 0 and 1. A 4-bit color image is capable of showing 16 colors, since there are 16 different combinations of 4 bits:
0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111
Also, 8-bit color has the capacity to show a total of 256 colors; 16-bit color shows a total capacity of 65,536 colors; 24-bit color can show up to a total of 16,777,216 colors.
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Color Technologies |
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The technology that an HP Multifunction product (MFP) or All-in-One (AIO) uses to create color output. Laser MFPs use vertical tandem intermediate transfer belt and laser electrostatic technologies, while Inkjet AIOs use ImageREt and ColorSmart technologies created by HP for the best color output. See Printing Technologies
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Colors |
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In TI DLP (Texas Instruments Digital Light Processing) technology, color is produced by passing light through a color wheel, shining through the color wheel segments as the color wheel spins. 16.8 million colors can be reproduced.
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After light is passed through the color wheel, the light is then deflected through a single TI DLP chip that contains thousands of tiny mirrors. The light combines on the screen to produce a colored image.
The colors found in HP digital projectors have consistent and accurate color because of the inherent reliability of the DLP technology. Additionally, HP has created new color wheel designs, color tables, and algorithms to provide the optimal combination of brightness and color to fit the projection environment and the content being presented.
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Connectivity: Digital Photography |
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The ability to connect a host computer for image download using USB cables. HP cameras are able to connect directly to printers and camera docks. Some systems may also include serial or parallel cables for communications.
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Connectivity: Projectors |
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The ability to connect a projector to different source devices using device-specific cables.
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HP projectors are capable of connecting to a variety of devices, such as PCs (Desktop, Portable, Handheld, and Tablet), DVDs, and VCRs. The HP xp and vp series products, for instance, have a large number of input connections for connecting multiple devices simultaneously (e.g., PC, monitor, and a VCR for teaching). Moreover, all HP projectors are “smart,” meaning they can adjust brightness, contrast, color depth, and other image properties to create the perfect image, regardless of input device – automatically, and without operator assistance.
HP products are tested using various PCs, DVDs and VCRs, and designed to support the new TV standards: SDTV (480i), EDTV (480p), and HDTV (720p and 1080i).
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Connectivity: Scanners |
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Connecting a scanner to a host computer using either a serial, parallel, or USB cable for communications.
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Copy Resolution (color/black) |
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The maximum resolution, measured in dots per inch (DPI), that an HP Multifunction product (MFP) or All-in-One (AIO) can produce on copied documents. Generally, the higher the DPI, the better the detail and clarity your copied document will have.
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Copy Settings |
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The copy capabilities that an HP Multifunction product (MFP) or All-in-One (AIO) supports. Common copy features include fit-to-page, reduce/enlarge, resolution, contrast, copy collation, number of copies and paper size. Color MFPs and AIOs may have different copy settings for color and black & white.
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Cost Per Page |
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The total cost per U.S letter-sized page with 15% color coverage or 5% monochrome coverage including ink, replaceable parts, power, paper, and average service costs. (The cost-per-page information provided for individual printer models is based on the best information available and is not guaranteed accurate by Hewlett-Packard Company. Actual prices may vary.) To see how HP's cost per page compares to other vendors, visit the Printer Comparison Center.
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Dots per inch (dpi) |
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Dots per inch has been the traditional measurement and indicator of a printer's output quality and refers to how many dots of ink are placed on each inch of a piece of paper or other media by a printer. For more about output quality, see resolution.
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Double-sided printing |
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See Duplex Printing.
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Duplex Printing |
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Printing on both sides of a page. Auto-duplexing printers offer automatic double-sided printing with help from a duplexing accessory that allows the printer to automatically output a two-sided page. This feature makes it easy to print on both sides of the page without manual intervention and saves paper.
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Duty Cycle |
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The maximum usage level per month for a printer is the duty cycle. This rating takes into account printer specifics such as the paper-handling capacity and cartridge replacement.
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Different departments in your company may have very different duty cycle needs. Some, like legal and accounting, may print reams of documents almost daily, while others like IT may not print much at all. As you consider your duty cycle needs, pay close attention to the different departments that will share the printer and how much they print monthly. You may be able to address the light duty cycle needs of one group with the heavy duty cycle needs of another in a single printer or multifunction device, or you may choose to give each group with high usage requirements their own printer to ensure their printing needs are met. Running a printer regularly at the top end of its duty cycle causes users to replace supplies more often, which reduces their productivity and increases your supplies usage. You should choose a printer with a duty cycle that exceeds your current production needs by a substantial margin to minimize interventions and maximize the life of your printer.
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Embedded Media Card Readers |
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Slots built into an HP printer that allow it to print photos directly from a memory card. HP media card readers support most common memory card formats, including CompactFlash Type I and II, SmartMedia, Secure Digital, MultiMedia Cards, Memory Stick, XD, and USB flash drive.
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Exposure control |
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Digital cameras require adjustments to control the levels of brightness, color saturation, and contrast in the final image. The factors that define correct exposure in a charge-coupled device (CCD) camera are the visible light spectrum wavelength-dependent sensitivity, the intensity of illumination, and the length of time the CCD is exposed to light.
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Exposure rating |
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Digital cameras have an ISO rating indicating their level of sensitivity to light. ISO 100 is the "normal" setting for most cameras, although some go as low as ISO 50. The sensitivities can be increased to 200, 400, 800, or even 3200 on high-end digital SLR (single-lens reflex) cameras.
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Fax PC Interface |
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Support for faxing from a PC without a physical document to scan and fax. If you plan to fax a large number of electronic documents created on a PC, this feature allows you to avoid printing the documents before faxing -- this saves time and consumables.
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First Page Out |
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The time it takes a printer to produce the first page of print job when warming up from powersave mode. HP Laser printers use Instant-on Technology to speed the first page out so you get your complete print job sooner.
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Focal range |
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The minimum and maximum range a camera can focus on an object. This includes a range from a moderate wide angle to moderate telephoto. The ability to lock focus at infinity, and to set focus manually. Maximum aperture ranges depend on the lens zoom setting.
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For example, focus ranges from 1.6 feet (0.5 meters) to infinity in normal mode, with a macro setting ranging from 6 to 39 inches (14 to 100 centimeters); as well as standard and macro focus modes.
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Hard Disk |
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A hard drive for your printer that can store files, fonts, forms, and other commonly used data right on a printer, which speeds the time it takes to print a document. Some hard drives also make it possible to protect confidential documents by holding the document on the drive until a user physically enters a PIN on the printer.
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Host-Based Printing |
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A printing approach that utilizes the processor on the PC that is sending a print job to create the printable pages, rather than generating those pages on the printer itself. Printers that utilize host-based printing can be more cost-effective because they do not require a powerful processor of their own. Since HP's host-based printing solutions utilize the GDI interface that is built into Microsoft Windows, you can begin using host-based printing immediately without investing in additional software.
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Imaging technology |
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A camera’s built-in tools for correcting two very common complaints in point and shoot photographs: red-eye removal and adaptive lighting.
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For example: adaptive lighting option (which may be available in different strength settings) simulates the effect of a fill flash by boosting brightness in shadow areas of images.
Other features may include: HP Real Life Technologies including In-Camera Panorama Preview, HP Image Advice, HP Noise Filter, HP Adaptive Demosiac, HP Vignetting, and HP Preferred Photo Reproduction.
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Ink Type |
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The kind of ink an inkjet printer uses to transfer a printed image to the page. HP inkjet and Photosmart printers use pigment-based inks that penetrate below the paper surface to provide rich color depth, minimal dot visibility, and uniform gloss. To learn more about ink technologies and HP's innovations in ink, review this PDF from HP Labs.
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Input Capacity |
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The number of sheets of standard printer paper that can be stored in a printer's paper trays. Because they do not require constant refilling, printers with high input capacities are particularly useful for printers used by a workgroup or any large group of people.
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Installed digital projectors |
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Designed for permanent placement in conference rooms and auditoriums with 15 or more participants and little or no ambient lighting. A permanent installation typically includes audio connections to built-in or permanently affixed high-end sound systems.
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HP digital projectors such as the xp8010 and xp8020 series ensure that your messages are conveyed with crisp, bright, easy-to-read images and text. Not to mention -- with the integration of HP color innovations, these digital projectors will do the work for you, allowing you to focus your attention where it needs to be the most: on your audience.
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Instant-on Technology |
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Cutting-edge fuser technology that allows HP laser printers to produce the first page faster when the printer is coming out of powersave mode, giving you your complete print job sooner. Why wait? Learn more about Instant-on Technology and the benefits it offers.
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Keystone correction |
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Also called horizontal and vertical keystone correction; the most typical adjustment is to vertical keystone correction. This means that when an image is projected upwards it creates a trapezoidal image shape; vertical keystone correction then squares the image. If an image is projected from the side, a combination of vertical and horizontal keystone correction is required to square the image. Keystone correction requires images to be rescaled, which can have a minor effect on some elements in the projected image.
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Laser Quality Speed |
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What is it?
Laser Quality Speed (LQS) is an HP-developed specification to enable a speed comparison of the HP Officejet line of printers to laser printers, thereby assisting customer purchase considerations. The print speed experienced by customers from an Inkjet printer is highly dependent on many variables, including the coverage and content of the printed document. In contrast, laser print speed is much less dependent on document content and coverage. The Laser Quality Speed specification helps customers make a performance comparison between the print speeds of an inkjet printer and a laser printer.
How does it work?
To measure Laser Quality Speed for an inkjet printing device, HP prints a representative suite of documents in the printer’s default quality setting (normal mode for HP Officejet or Officejet Pro Color Printers and AiOs). The suite includes several monochrome & color documents, including pages of various text coverage, and full page graphics and image files. The speed reporting methodology averages the print engine’s black and color speeds, in pages per minute, by calculating an average text print speed, and then averages that speed with the print speed of a more complex, full page document. The resulting average pages per minute (ppm) speed determine the “Laser Quality Speed” specification.
HP’s Laser Quality Speed measurement process is based on three important factors:
- Speed measurements use comparable print qualities. For the HP Officejet line of printers and AiOs, the default plain paper normal mode is used to generate the Laser Quality Speed specification.
- Speed measurements are done over a range of document types and content.
- The measurement process is designed to avoid the influence of the host PC performance, and to represent the printer hardware, or print engine, performance.
This approach allows a more direct comparison with published laser printer ppm speed specifications. Laser Quality Speed is based on HP internal testing and methodology and is not an industry standard.
Where is it used? Laser Quality Speed is used in product data sheets, customer education manuals, brochures, collaterals, and other customer communications meant to help customers make purchase choices between Officejet and laser printers. |
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Light source |
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The light source in a projector is derived from a bulb, also called a lamp. The intensity of the light is determined by the power it consumes: a high watt measure (300-watt) produces a brighter and hotter light. HP projectors use different size lamps ranging from 120- to 210-watt lamps. A lamp has a definitive life-span (measured in lit hours) and the brightness of the lamp diminishes over time.
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Maximum scan size |
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The physical horizontal and vertical dimension of an original document or image that can be scanned based on the size of the scanner.
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Media Size |
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The sizes of paper, envelopes, and other media that a printer's paper trays will support. The more media sizes your printer supports, the more flexibility you have in the types of documents you can print on that printer.
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Media Type |
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The various types of media a printer supports. Beyond standard office paper, which may include plain, glossy, letterhead, recycled, and other standard weight papers, a printer may also support envelopes, transparencies, cardstock, labels, and more. It's better to choose a printer with a wider variety of media options than to try to force the printer to print on media it doesn't support.
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Media Weight |
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The paper weights that a printer supports. Paper weight is determined by the total weight of 500 pieces of paper. Standard laser or inkjet paper typically weights 24lb, while photo papers may weigh 32lb and higher. The higher the paper weight your printer supports, the more media options it will have.
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Memory |
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RAM built into a print that increases print speed and helps process large and complex documents. Maximum memory is the total amount of memory a printer can accommodate.
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Memory is an important consideration on most color printers and for any printer you plan to share on a network among multiple employees. For example, a color LaserJet printer may utilize its memory to speed the printing of complicated graphics or photographs, making it easier and more efficient to print color documents in-house regularly. Similarly, a shared office inkjet printer might utilize memory to process several print jobs sent to it from different employees at one time. This reduces the time it takes to transfer the print job from the employee computers to the printer and helps employees get back to work more quickly. A printer's maximum memory is the total amount of memory it can accommodate, and is typically more than the standard memory that comes installed on the printer. As you evaluate a printer, consider how much memory you can add later as your printing needs change.
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Multitasking Capability |
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The ability of a Multifunction product (MFP) or All-in-One (AIO) to perform multiple functions at one time. When you choose an MFP or AIO with this functionality, you can utilize more than one feature of your device at one time, which improves productivity and device utilization.
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Networked/Network-ready |
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An inkjet or laser printer or MFP that you can connect to a network and administer from a Web browser via its built-in Web server. You can manage all of your networked printers at once with HP's free Web Jetadmin software.
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Many of HP's inkjet and LaserJet printers and MFPs (multifunction products) are equipped with HP Jetdirect internal print servers that allow you to connect the printer directly to your company's Local Area Network (LAN) with a standard Ethernet cable. Once you attach the printer to your network, all of the users on your network can share it. It may be less expensive to purchase a single workgroup printer to share over the network instead of several personal printers that won't be shared. Workgroup printers can typically provide your employees with more features than personal printers and you can use Web Jetadmin -- HP's free print network management tool -- to conveniently and easily manage all of your networked printers from a single location. Learn more about HP's tools for networking and managing printers
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Output Capacity |
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The number of sheets of standard printer paper that can be stored in a printer's output trays. The higher a printer's output capacity, the better it can support large printing projects.
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Paper Handling |
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Support for professional paper handling functionality such as duplexing, folding, saddle stitching, corner stapling, and stacking. If you are producing marketing or other professional documents on your in-house printer, finishing capabilities add the final touch.
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PhotoREt |
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A photo resolution enhancement technology developed by HP to achieve the highest quality photo printing results on photo and plain paper with 289 levels of shade for each color and a complete palette in excess of 1.2 million colors.
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Printers equipped with HP PhotoREt technology uses color layering technology to produce photo-quality color images. With advancements in its multidrop color layering process, HP PhotoREt controls the placement of those six inks more precisely than before. Each dot is capable of receiving up to 32 minuscule drops of color, each one precisely positioned to achieve smoother gradations in tone and to virtually eliminate any grain in the printed image. Full dye-load inks in cyan, magenta, and yellow, produce vibrant color. Light dye-load inks of light cyan and light magenta, as well as a specially formulated dye-based black ink, dramatically increase the range of available colors, while the black is richer, deeper, and glossier than the usual black that is produced by a composite of colored inks. This means you'll get finer details and a wider range of colors. The newest generation of HP color layering technology?HP PhotoREt IV uses six-ink color printing to produce up to 289 levels of color for than 1.2 million colors. Learn more about PhotoREt III technology
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Power consumption |
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The maximum energy a projector will use, measured in watts.
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Many projectors have a standard mode and an economy or low-wattage mode, with the standard mode requiring more energy to run but also producing brighter image.
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Print Drivers |
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The standard drivers available to allow the printer to interface with different operating systems and applications. HP regularly makes printer drivers available for systems beyond Windows, including Mac and Linux, so your printer will work seamlessly with all of the computers in your office.
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Projection distance |
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The maximum distance a projector can be from a screen and still cast a usable image in a dark room.
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If you are purchasing a projector to install permanently or semi-permanently in a room, be sure to measure the distance from your planned projector location to your planned screen location so you can choose a projector with the required projection distance capabilities.
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Recommended Monthly Volume |
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The number of output pages a printer is designed to support on a monthly basis. While exceeding the recommended volume occasionally poses no problem, regularly exceeding it can reduce the life of your printer and compromise print quality. It's better to choose a printer whose recommended monthly volume exceeds your current needs so you have room to grow as your printing needs grow.
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Scan input |
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The different destinations or applications a scanner supports for scanned documents. In addition to scanning a document or picture directly to a file system, many HP scanners offer featuers that allow you to scan directly to e-mail or make a copy of the scanned image. In addition, several scanners may support TWAIN scanning so you can scan images directly into TWAIN-compliant applications like Adobe Photoshop.
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Scan resolution |
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Resolution determines the size of the image to be processed. Low resolutions are used for Web content. High resolution (300x300) should be selected for professional printing.
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Scanner type |
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Scanners are available in different sizes for different purposes: flatbed, hand held, photograph (no slides or negatives), transparency scanner (slides and negatives only), and photo scanner (photographs, slides and negatives).
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Task speed |
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The speed at which an original can be scanned and placed within a software application.
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For example, less than 15 sec: 4 x 6-in color photo into Microsoft Word; less than 33 sec: OCR a full page of text into Microsoft Word; less than 18 sec: e-mail photo.
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Type Faces |
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Built-in support for a collection of standard typefaces that make it easy to create the look you want. Select HP printers support a variety of typefaces, including Microsoft Windows fonts, scalable TrueType? fonts, and PostScript language fonts.
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Versatile projectors |
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Designed for placement in boardrooms and classrooms with 2 to 50 participants and flexible lighting conditions. Weighing approximately 4 lbs, these projectors are mobile enough to be shared by different workgroups.
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Onsite projectors offer the best combination of performance, features, and price.
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Wi-Fi |
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The family of 802.11x wireless LAN protocols that allow computers to communicate with one another without wires. HP offers both internal and external Jetdirect print servers to extend Wi-Fi capabilities to your printers so they can participate on a wireless network like your PCs and notebooks. Select printers also include embedded support for Wi-Fi. A wireless printing infrastructure is easy to adapt and easy to grow as your companies needs expand. Learn more about wireless Jetdirect.
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Zoom capability: Digital Photography |
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Also called a digital camera’s focal length. Generally, this is the distance measured in millimeters and includes a “normal” view of how the naked eye sees things, and a “wide-angle” view determined by the ability of the lens to zoom out or in: zoom does not always mean “close-up.”
Digital cameras may have an optical zoom, a digital zoom, or both. See optical zoom and digital zoom.
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Zoom capability: Projectors |
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Optical/manual or digital zoom is a feature on standard, long, and short throw lenses. The zoom feature allows images to be increased or decreased on the screen.
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Printable version
