Browse Prior Art Database

Bi-Directional Print Alignment Ease-of-Use

IP.com Disclosure Number: IPCOM000103265D
Original Publication Date: 1990-Sep-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 1 page(s) / 46K

Publishing Venue

IBM

Related People

Do, PK: AUTHOR [+3]

Abstract

Disclosed is a process in which the bi-directional print alignment characteristics of a printer can be easily analyzed and changed by a printer user.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Bi-Directional Print Alignment Ease-of-Use

      Disclosed is a process in which the bi-directional print
alignment characteristics of a printer can be easily analyzed and
changed by a printer user.

      Upon user request, the printer microcode prints an alignment
pattern for each of a series of values stored in an internal table.
The table values are used to vary the starting of the print head wire
firing.  Therefore, each pattern will possess different
bi-directional alignment characteristics as is shown in the figure.
The number of values stored in the internal table can be large to
handle the wide variations in the tolerances of the parts that are
used to produce the printer's print mechanism.  The microcode can
restrict the range of values that the printer user sees to include
only the useful adjustment range for their printer.

      The table value that the user selects as producing the best
bi-directional print quality is remembered by the printer and is used
in the control of bi-directional printing.  The ease and accuracy of
this process allows the user to change his printer's bi-directional
print alignment characteristics periodically, as the printer's parts
wear and change.

      Disclosed anonymously.