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Glossary

ASCII

American Standard Code for Information Interchange. A standardized way of assigning codes to characters and control codes. This system is widely used by manufacturers of computers, printers, and software.

bitmap font

The dot-by-dot representation of a font. Bitmap fonts are displayed on computer screens and printed on dot matrix printers. See outline font.

buffer

See memory.

character set

A collection of letters, numbers, and symbols used in a particular language.

cpi (characters per inch)

A measure of the size of fixed-width text characters.

default

A value or setting that takes effect when the printer is turned on, reset, or initialized.

developer cartridge

A component of the printer that contains the toner that creates the printed image on paper.

dots per inch (dpi)

The number of dots per 25.4 mm (1 inch) is a measure of printer resolution. The higher the number of dots, the higher the resolution or print quality.

download

To transfer information from the computer to the printer.

dpi

See dots per inch.

driver

The part of a software program that converts commands from the application program into commands used by the printer. Also known as the printer driver.

emulation

See printer emulation.

fixed-width font

A font whose characters are allotted the same amount of horizontal space, no matter the width of the character. Thus, the uppercase M receives the same amount of space as the letter l.

font

A set of characters and symbols that share a common typographic design and style.

halftone

A grayscale image that is composed of small dots. The dots can be close together to create black or more widely spaced to create gray or white areas in the image. Newspaper photographs are common examples of halftones.

initialization

The act of returning the printer to its defaults (fixed set of conditions).

interface

The connection between the printer and the computer. The parallel interface of this printer complies to the IEEE 1284 Parallel Interface standard that supports the Compatibility, Nibble, and ECP modes. The USB interface is a serial interface that complies to Microsoft Plug and Play (PnP) specification. With the use of a USB hub, multiple USB peripherals can be connected to the computer at the same time.

landscape

Printing that is oriented sideways on the page. This orientation gives you a page that is wider than it is high and is useful for printing spreadsheets.

memory

The part of the printer's electronic system that is used to store information. Some information is fixed and is used to control how the printer operates. Information that is sent to the printer from the computer (such as downloaded fonts) is stored in memory temporarily. See also RAM and ROM.

orientation

Refers to the direction in which characters are printed on a page. This direction is either portrait (upright), or landscape, in which the page is rotated 90°.

outline font

A font whose outline is described mathematically, allowing it to be rendered (printed or drawn) smoothly at any size.

PCL

The command language built into the Hewlett-Packard LaserJet series printers.

photoconductor unit

A component of the printer that contains a light-sensitive print drum which permanently fixes the toner onto paper.

pitch

A measure of the number of characters per inch (cpi) for fixed-width fonts.

portrait

Printing that is oriented upright on the page (as opposed to landscape, in which the printing is oriented sideways on the page). This is the standard orientation for printing letters or documents.

printer driver

See driver.

printer emulation

A set of operating commands that determines how data sent from the computer is interpreted and acted upon. Printer emulations replicate existing printers, such as the HP LaserJet 4.

proportional font

A font whose characters have varying amounts of horizontal space depending on the width of the character. Thus, the uppercase M takes up more horizontal space than the lowercase l.

RAM

Random Access Memory (RAM) is where temporary information is stored.

reset

To refresh the printer's memory and erase the current print jobs.

resolution

A measure of the fineness and clarity of images produced by the printer or monitor. Printer resolution is measured in dots per inch. Monitor resolution is measured in pixels.

RITech

Resolution Improvement Technology. A feature that smooths the jagged edges of printed lines or shapes.

ROM

Read Only Memory (ROM) is where permanent information is stored.

status sheet

A report that lists the printer settings and other printer information.

symbol set

A collection of symbols and special characters. Symbols are assigned to specific codes in a character table.

TrueType

An outline font format that was developed jointly by Apple® Computer and Microsoft Corporation. TrueType fonts are outline fonts that can be easily resized for screen display or for printing.

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