Browse Prior Art Database

Large Character/Logo Printing With Engraved Line Printers

IP.com Disclosure Number: IPCOM000101602D
Original Publication Date: 1990-Aug-01
Included in the Prior Art Database: 2005-Mar-16
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Lee, HC: AUTHOR

Abstract

In addition to regular alphanumeric characters, bar code labels often require large characters. For example, AIAG (Automotive Industry Action Group) labels require 0.2 inch- and 0.5 inch-size characters along with bar codes. In the past, fabric elements have been used on impact line printers to print boxy characters with limited capabilities. More versatile sets can be constructed with modified dot-matrix schemes on engraved band printers.

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Large Character/Logo Printing With Engraved Line Printers

       In addition to regular alphanumeric characters, bar code
labels often require large characters.  For example, AIAG (Automotive
Industry Action Group) labels require 0.2 inch- and 0.5 inch-size
characters along with bar codes.  In the past, fabric elements have
been used on impact line printers to print boxy characters with
limited capabilities.  More versatile sets can be constructed with
modified dot-matrix schemes on engraved band printers.

      Typically, to print bar codes with band printers, 2 to 4
impacts (1 to 3 overstrikes) are required for each printed line of
1/8 inch or 1/6 inch spacing.  Thus, one set of fonts for 3-strike
scheme may consist of 21 dot-bars as shown in Fig. 1.  With 8 lines
per inch (LPI) spacing, the hammer area of 1/8 by 1/10 inch is
divided into 3 by 3 matrix of 1/24 inch by 1/30 inch dots.  The
dot-bar set consists of 3 rows (or columns) of 1, 2 or 3 dots,
totalling 21 dot-bars.  Similarly, for 6 LPI spacing, with 1, 2, 3 or
4 dots, the set requires 45 dot-bar elements for 3-strike scheme, as
shown in Fig. 2.  Alternatively, a set of 4 rows of 1, 2 and 3
dots will require 28 elements and 4 strikes.

      The above schemes can be also used to print various types of
logos along with bar codes and large characters.