IBM INFO PRINT 3000 User Manual

Page 331

DBCS.

Double-byte character set.

DCF.

Document Composition Facility.

developed image.

The image that has been exposed

onto the photoconductor and covered with toner by the

developer.

developer mix.

A combination of carrier beads and

toner in which the beads electrically charge the toner.

diagnostic.

Pertaining to the detection and isolation of

errors in programs and faults in equipment.

diagnostic mode.

The operational mode in which the

printer can check itself in case of a malfunction. When

the InfoPrint 3000 is in diagnostic mode, it is not

accepting information from the attached controlling

computer system. In the InfoPrint 3000, only service

representatives can use diagnostic mode. Contrast with

print mode and test mode.

direct attach.

The environment in which an

application program directly allocates the InfoPrint

3000 printing subsystem.

dishing.

The curve a stack of forms takes when folded

or refolded at the fold perforation.

diskette.

A thin, flexible, magnetic disk enclosed in a

protective jacket.

Document Composition Facility (DCF).

An IBM

licensed program that provides text formatting for the

InfoPrint 3000.

double-byte character set (DBCS).

A set of characters

in which each character is reperesented by a 2-byte

code. Languages such as Japanese, Chinese, and

Korean, which contain more symbols that can be

reprented by 256 code points, require double-byte

character sets. Because each character requires 2 bytes,

the typing, display and printing of DBCS characters

requires hardware and programs that support DBCS.

down fold.

Fanfold forms are alternately folded.

When fanfold forms are unfolded and held

horizontally, a fold is a down fold if it points down

from the horizontal surface.

DPE.

Decompression Performance Enhancement.

drag.

The resistance to forms feeding freely into the

printer; for example, the form rubbing against the

carton.

duplex printing.

A mode of printing on both sides of

a form. Contrast with simplex printing.

EBCDIC.

Extended Binary-Coded Decimal

Interchange Code.

EC.

Engineering change.

electronic overlay.

A collection of constant data

electronically composed in the controlling computer.

Can be merged with variable data on a page during

printing. An electronic overlay defines its own

environment. It can be in coded form or raster pattern

form. See also preprinted form.

electrophotographic process.

The creation of an image

on forms by uniformly charging the photoconductor,

creating an electrostatic image on the photoconductor,

attracting negatively charged toner to the discharged

areas of the photoconductor, and transferring and

fusing the toner to forms.

emboss.

To press and raise the surface of paper into a

design. Embossed paper appears thicker than

nonembossed paper, can increase printer wear, and can

degrade print quality.

end-of-forms sensor.

A sensor that detects when the

last sheet of a form enters the printer.

error log.

(1) A data set or file in a product or system

where error information is stored for later access. (2) A

record of machine checks, device errors, and volume

statistical data.

ESCON.

Enterprise System Connection.

ESCON channel.

A channel having an Enterprise

Systems Connection channel-to-control-unit I/O

interface that uses optical cable as a transmission

medium.

ESMM.

End Select Medium Modification.

Ethernet.

A local area network that allows attachments

to transmit on the network without prior coordination.

fanfold.

Continuous forms that are alternately folded

at regular intervals, usually on a perforation.

Fiber Distributed Data Interface (FDDI).

An ANSI

standard for a 100 Mbps LAN using optical fiber

cables.

FLSF.

Font Library Service Facility.

fold memory.

The ability of a form to refold at the

fold perforation after exposure to heat during the

fusing process.

fold perforation.

The perforation on which a form is

folded during manufacture and refolded after printing.