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Enabling Backup in Article Processing

IP.com Disclosure Number: IPCOM000044941D
Original Publication Date: 1983-Jan-01
Included in the Prior Art Database: 2005-Feb-06
Document File: 3 page(s) / 54K

Publishing Venue

IBM

Related People

Stone, DE: AUTHOR

Abstract

Backup article processing, such as cut sheet printers as well as tractored paper printers, is enabled by keeping a history of article processing for the number of articles currently being processed. A separate tally is provided for critical processing points in the article processor. Each time a new article is inserted into the article processor, such as an electronic image for a printer, all of the tallies are captured. Such captured tallies are memorized until a data set boundary is reached. At that point, the tallies for that data set are cleared. When a specific error situation is detected (which causes the article processor to REIML); the accumulated tallies are recalibrated such that the oldest captured tally has a minimal count.

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Enabling Backup in Article Processing

Backup article processing, such as cut sheet printers as well as tractored paper printers, is enabled by keeping a history of article processing for the number of articles currently being processed. A separate tally is provided for critical processing points in the article processor. Each time a new article is inserted into the article processor, such as an electronic image for a printer, all of the tallies are captured. Such captured tallies are memorized until a data set boundary is reached. At that point, the tallies for that data set are cleared. When a specific error situation is detected (which causes the article processor to REIML); the accumulated tallies are recalibrated such that the oldest captured tally has a minimal count. All of the other captured tallies are adjusted to synchronize with the new minimal count. By maintaining the accumulated tally, an analysis of the article processor can yield information relating to the articles received in seriatim for facilitating processing backup recoveries.

A peripheral processor, such as a high-speed printer, has an electronics portion for receiving electronic images. The electronics portion drives an imaging apparatus which affixes electronic images onto a sheet of paper using any one of a plurality of imaging techniques. The sheet of paper travels along an article transfer path past several sensing stations, represented by the vertical arrows. Additionally, the electronics portion has a checking point corresponding to the receipt of the electrical representation of an image to be put on a sheet of paper. Each time a sheet passes the sensing point, a corresponding tally is incremented. In a similar manner, each time an electronic image is received by the electronics portion, a tally is also increased.

Upon the transfer of data to the electronics portion, counter CK within the peripheral processor is incremented by one. In a printer, having an image transfer station, counter TK is incremented by unity each time an image is affixed to a sheet of paper passing through the transfer station. Since the article transfer can be asynchronous to the receipt of the electronic images, count TK may be incremented more than once while a counter CK is incremented by unity. On the other hand, counter TK may not be incremented at all while CK is incremented several times. In a similar manner, an image-fusing station drives counter FK for tallying the sheets of paper passing therethrough. Because of the physical space between the transfer station and the fu...