Intermate 100 manual Processing Layers, Processing layers. Read from left to right

Processing Facilities: Processing Layers

17.4. Processing Layers

Print jobs sent to the printer are processed in several layers by the Intermate1xx before the actual printing occurs.

Figure 7. Processing layers. Read from left to right.

	Print Handler
Service Protocol	Printer request	HPO	Logical	Target Printer
	system	Emulator	Printer	(physical)
Print Client
	Input Control			Output Control

When the job starts, a print handler is started as an instance of the print server, i.e. the Intermate1xx. A process is started which “carries” the job through the various layers. The protocol from the print client to the print handler is the one specified in the service.

The print handler asks the printer request system to give the job exclusive rights to use the specified target printer. It makes sure that the job waits until its turn in the print queue and keeps the following jobs at bay until it is their turn.

HPO stands for Host Print Option. The HPO emulator is used when the service is an IPDS, TN5250E, or TN3270E host-ses- sion.

In release levels 2111 and higher it is possible to direct print to a target printer without having to go through the logical layer. When you configure a service on older models, you must always tell it which logical printer to use. In turn, each logical printer redirects the job to a target printer (or to one pool of tar- get printers (enabled under NDO)).

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