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.
Learn more
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.
Learn more
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.
Learn more
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.
Learn More
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.
Learn more
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.
Learn more
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.
Learn more
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.
Learn More
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.
Learn
More
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.
Learn More
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.
Learn more
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.
Learn more
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.
Learn more
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.
Learn more
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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