Coverage
It is the printing term used for a toner usage measurement on printing. For example, 5% coverage means that an
A4 sided paper has about 5% image or text on it. So, if the paper or original has complicated images or lots of
text on it, the coverage will be higher and at the same time, a toner usage will be as much as the coverage.
CSV
Comma Separated Values (CSV). A type of file format, CSV is used to exchange data between disparate
applications. The file format, as it is used in Microsoft Excel, has become a pseudo standard throughout the
industry, even among non-Microsoft platforms.
DADF
A Duplex Automatic Document Feeder (DADF) is a mechanism that will automatically feed and flip over an original
sheet of paper so that the machine can scan on both sides of the paper.
Default
The value or setting that is in effect when taking a printer out of its box state, reset, or initialized.
DHCP
A Dynamic Host Configuration Protocol (DHCP) is a client-server networking protocol. A DHCP server provides
configuration parameters specific to the DHCP client host requesting, generally, information required by the client
host to participate on an IP network. DHCP also provides a mechanism for allocation of IP addresses to client
hosts.
DIMM
Dual Inline Memory Module (DIMM), a small circuit board that holds memory. DIMM stores all the data within the
machine like printing data, received fax data.
DNS
The Domain Name Server (DNS) is a system that stores information associated with domain names in a
distributed database on networks, such as the Internet.
Dot Matrix Printer
A dot matrix printer refers to a type of computer printer with a print head that runs back and forth on the page
and prints by impact, striking an ink-soaked cloth ribbon against the paper, much like a typewriter.
DPI
Dots Per Inch (DPI) is a measurement of resolution that is used for scanning and printing. Generally, higher DPI
results in a higher resolution, more visible detail in the image, and a larger file size.
DRPD
Distinctive Ring Pattern Detection. Distinctive Ring is a telephone company service which enables a user to use a
single telephone line to answer several different telephone numbers.
Duplex
A mechanism that will automatically flip over a sheet of paper so that the machine can print (or scan) on both
sides of the paper. A printer equipped with a Duplex can print double-sided of paper.
Duty Cycle
Duty cycle is the page quantity which does not affect printer performance for a month. Generally the printer has
the lifespan limitation such as pages per year. The lifespan means the average capacity of print-outs, usually
within the warranty period. For example, if the duty cycle is 48,000 pages per month assuming 20 working days,
a printer limits 2,400 pages a day.
ECM
Error Correction Mode (ECM) is an optional transmission mode built into Class 1 fax machines or fax modems. It
automatically detects and corrects errors in the fax transmission process that are sometimes caused by telephone
line noise.
