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Browse Prior Art Database

Microcode Tolerance Adjustments

IP.com Disclosure Number: IPCOM000106533D
Original Publication Date: 1993-Nov-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Barker, RB: AUTHOR [+3]

Abstract

A Point-of-Sale printer usually contains several sensors which determine print positions for different print operations. These can include margin adjustment, alignment of left-to-right and right-to-left printed lines, and first print line for an inserted document. Holding tight tolerances of a sensor relative to the printhead mechanism is usually difficult, and precise alignment techniques could be costly. The MicroCode Tolerance (MCT) scheme is a software routine that is part of the system RAS utility package. This routine will be utilized at both the manufacturing site of the printer, or in the field when a printer is repaired.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 63% of the total text.

Microcode Tolerance Adjustments

      A Point-of-Sale printer usually contains several sensors which
determine print positions for different print operations.  These can
include margin adjustment, alignment of left-to-right and
right-to-left printed lines, and first print line for an inserted
document.  Holding tight tolerances of a sensor relative to the
printhead mechanism is usually difficult, and precise alignment
techniques could be costly.  The MicroCode Tolerance (MCT) scheme is
a software routine that is part of the system RAS utility package.
This routine will be utilized at both the manufacturing site of the
printer, or in the field when a printer is repaired.  MCT variables
can also be defined for engineering purposes only, whereby printers
in the field could be updated electronically for certain parameters
without releasing a new microcode P/N and a new processor module.

      A typical operation for aligning a line of print on a receipt
would be for the RAS utility program shown in the sole figure to be
executed.  This will cause a line of print to be printed on the
paper.  The operator will visually determine if the message is
properly aligned on the paper (centered).  If it is not aligned, the
operator will enter a given number of print dot positions to shift
the printed message on the receipt tape.  The routine will then
reprint a message shifted by the amount specified by the operator.
When the operator is satisfied with the results, the nu...