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Browse Prior Art Database

Optional Default Response in Data Processor Controlled Printers

IP.com Disclosure Number: IPCOM000050237D
Original Publication Date: 1982-Sep-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Czyszczewski, JS: AUTHOR [+2]

Abstract

In data processing operations which control printers, the printers are required to take certain default actions if they are directed to perform a function they cannot support. For example, a printer may be asked to print a character it does not support (default is to print a space), or the printer may be asked to print a character which exceeds the physical right edge of the printer mechanism (default is to insert a carrier return and finish printing the text on the next line). But in all cases, the printer continues to print. With such data processing operations, the objective is to print as quickly as possible and to present as much data as is physically possible.

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Optional Default Response in Data Processor Controlled Printers

In data processing operations which control printers, the printers are required to take certain default actions if they are directed to perform a function they cannot support. For example, a printer may be asked to print a character it does not support (default is to print a space), or the printer may be asked to print a character which exceeds the physical right edge of the printer mechanism (default is to insert a carrier return and finish printing the text on the next line). But in all cases, the printer continues to print. With such data processing operations, the objective is to print as quickly as possible and to present as much data as is physically possible.

On the other hand, where the system is involved in word processing applications which produce high quality final documents, the emphasis is placed on printing quality. In this environment, when the printer is requested to perform a function which it is unable to do, printing must be discontinued so that the system may correct the erroneous request and reprint the document correctly.

Where a printer will be used both in data processing and word processing applications as controlled by a single host system, the printer must have both of the above capabilities. Accordingly, the system has the option of operating either in the data processing mode wherein the printer will continue to print despite the faults or in the high quality word proces...