cut-sheet paper. The medium that is cut into
uniform-size sheets before being loaded into the printer.
Contrast with continuous forms.
DDASD. Direct access storage device.
data check. A synchronous indication of a condition
caused by invalid data or incorrect positioning of data.
Reporting of some data checks can be suppressed.
data control block (DCB). A control block used by
access method routines in storing and retrieving data.
data map. An internal object in a page definition that
specifies fonts, page segments, fixed text, page size,
and the placement and orientation of text. Synonymous
with page format.
data set. A named set of records stored and
processed as a unit. See also file., concatenated data
set,partitioned data set, and sequential data set.
data types. The type of data objects that can be
printed by the printer.Each type of data object has its
own architecture.An overview of the architectures is
presented in the Mixed Object Document Content
Architecture Reference.
Twotypes of text data are: PTOCA PT1 and PTOCA
PT2. PT1 provides the basic function needed to control
text data. PT2 provides additional migration controls for
underscoring, overstriking, and making a temporary
baseline move.
Twotypes of image data are: IOCA FS10 image and IM
image. IOCAimage provides more function than IM
Image; for example, compression and resolution
independence is possible with IOCAimage.
Some printers support vector graphics called GOCA
DR/2V0.
Some printers also have the capability of printing
BCOCABCD1 bar code data without requiring special
fonts or special processing in the host system.
DCB. Data control block.
DCF. .SeeDocument Composition Facility.
Decompression Performance Enhancement feature.
Afeature you can purchase and install on your AFP
printer to provide printer hardware image
decompression of IOCAdata streams that were
compressed using standard compression routines. The
DPE capability improves the decompression
performance offered with theAFIG feature.
default. An alternate value, attribute, or option that is
assumed when none has been specified, and one is
needed to continue processing.
deferred printing mode. A printing mode that spools
output through JES to a data set instead of printing it
immediately.Output is controlled using JCL statements.
Contrast with direct printing mode.
Device resolution. Printers can also be categorized
by the resolution they support. For example, .br 240-pel
resolution is supported by such printers as: 3800, 3820,
381x, 3160, 3930, theAFCCU-based 3900 family of
printers, and the group 3 printers. 240- or 300-pel
(configurable) is supported by the 3130 printer.300-pel
resolution is supported by such printers as: 391X, 3935,
4028, the PPDS and the PCL printers (such as the
4019 and 4029). 600-pel resolution is supported by the
InfoPrint 4000 DR1/DR2 printer,as well as the Network
Printers 12, 17, and 24.
direct access storage device (DASD). A computer
storage device in which access time is effectively
independent of the location of the data.
direct printing. A PSF for OS/390 printing mode that
allows PSF exclusive use of the printer.Output is
printed directly and is not controlled by the Job Entry
Subsystem (JES).
disabled mechanisms. The ability to identify one
mechanism of the printer as disabled.An example is the
ability to print from one medium source when the other
source is disabled.
Distributed Print Function (DPF). A component of
PSF for OS/2 that you can use to print jobs sent to PSF
for OS/2 from PSF for OS/390, PSF/VM, PSF/VSE, or
PSF forAS/400. DPF receives host PSF output and
resources for spooling and printing with PSF for OS/2.
DPF also stores PSF for OS/390 and PSF/VSE
resources in the DPF resource library,so that the host
system does not have to send PSF resources each time
documents are spooled. Through DPF,PSF for OS/2
2.0 provides a function similar to that provided by
Remote PrintManager (RPM) Version3.0 under DOS.
document. (1)A machine-readable collection of one or
more objects that represent a composition, a work, or a
collection of data. (2)A publication or other written
material.
Document Composition Facility (DCF). An IBM
licensed program that provides a text formatter called
SCRIPT/VS. SCRIPT/VS can process files marked up
with a unique set of controls and tags.
double-byte coded font. A font in which the
characters are defined by 2 bytes; the first defining a
coded font section, and the second defining a code
point. Double-byte coded fonts are required to support
languages requiring more than 256 graphic characters.
Twobytes are required to identify each graphic
character.Kanji is printed using a double-byte font.
Contrast with single-byte coded font.
196 Printer Information