Technics 3010 Manuel D’Utilisation

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Some of the other TLA’s you might hear when discussing the AS/400 and printing are: 
 
SCS Printing = SNA Character String 
AFP Printing = Advanced Function Printing 
IPDS Printing = Intelligent Printer Data Stream 
 
These are different types of printer data streams that are supported by the AS/400.  Each of 
these support different types of data, along with different types of equipment and each has it’s 
own unique characteristics.  SCS has a limited number of commands, so this will limit the 
amount of formatting you can do with the output.  IPDS supports an extremely complex set of 
commands, so it will allow various formatting options.  As you can see, this will affect the end 
result requirements dramatically.  
 
SCS, being a simple data stream is primarily utilized by line printers.  It supports a feature set 
comprising of overstrikes, margins, sub and super-script text, underscores and the like.  While 
AFP data streams includes support for objects and text.  This means it supports forms 
processing, overlays and various additional fonts.  It is generally known that IPDS printers 
support AFP data streams as well.   
 
Since IPDS is more complex, it supports both text and data as well as forms, fonts and overlays.  
It also supports bi-directional communications between the OS and the printer.  IPDS enabled 
printers can supply various information such as job status, error recovery and reporting as well 
as resource management of things such as fonts, forms etc. 
 
Host Print Transform 
 
 
For users who don’t need all of the advanced printing features of AFP and/or IPDS, or 
who don’t want to spend the extra dollars required to obtain these more expensive printers, HPT 
is included in all versions of the base operating system.  Whereas IPDS printers process the 
data stream after it’s sent to the printer, HPT’s data stream is processed on the AS/400 and 
then sent to the printer as ASCII text.  While this does add to the workload of the AS/400 itself, it 
will support any printer that can interpret or print ASCII (plain text).  This allows the printer to be 
attached to the AS/400 in various ways. This can be a Twinaxial connection (dual coaxial cable 
for direct connection to the AS/400), or it can be attached directly to a workstation or terminal or 
another AS/400.  Or it can be a LAN connection, such as our DP-35/45/6010.  Since it is ASCII 
that is being sent, support the most popular page description languages, PCL and PostScript, 
exists.  This can be advantageous for embedding commands for formatting data within the print 
stream. 
 
   
 
 
 
 
 
 
 
 
 
 
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