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Method For Fairsharing of a Printer by Multiple Display Stations

IP.com Disclosure Number: IPCOM000050447D
Original Publication Date: 1982-Oct-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Adam, TL: AUTHOR

Abstract

This article describes a method whereby a printer can be shared among two or more display stations in a fashion so as to give each display station a chance to use the printer in an equitable manner and, at the same time, allow for getting high priority jobs printed in a timely manner.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 53% of the total text.

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Method For Fairsharing of a Printer by Multiple Display Stations

This article describes a method whereby a printer can be shared among two or more display stations in a fashion so as to give each display station a chance to use the printer in an equitable manner and, at the same time, allow for getting high priority jobs printed in a timely manner.

In a shared printer configuration, as in a standalone configuration, print requests are usually entered into a "first in, first out" (FIFO) queue at each display station. Each display station has its own print queue and can only access its own queue. jobs within a queue may be displayed, cancelled or moved to the top of the queue.

Initially (at power-on/IPL), the printer in a shared printer configuration will not be assigned to a display station. The operator may implicitly request to have the printer assigned to a display station by completing the setup for a Print Document task, pressing the Print key to invoke a Print Page function during the Typing task, or selecting a Print Diskette Contents task on the Work Diskette Task Selection menu.

When the operator implicitly requests the printer, the system issues a request for the printer followed by a release of the printer command. Therefore, once the printer is assigned as a result of an implicit request, the printer will only be assigned for the duration of a single printing job.

The operator may explicitly request the printer by selecting the Request Printer task via the Request Tasks menu. When the printer is assigned as the result of the operator making the explicit request, the printer will remain assigne...