Browse Prior Art Database

All-Points-Addressable Print Wheel

IP.com Disclosure Number: IPCOM000044278D
Original Publication Date: 1984-Nov-01
Included in the Prior Art Database: 2005-Feb-05
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Anderson, WG: AUTHOR

Abstract

When the 31 special characters on a normal 96-character print wheel are replaced with the graphic characters shown in the figure, the graphic printing speed for printing all-point-addressable graphics can be significantly increased. The remaining 65 characters are sufficient to accommodate the normal data processing character set; therefore, letter quality text and higher speed graphics can be printed without changing the print wheel. The prior-art graphic character set is 4 dots high and is given by the 1,2,4 and 8 characters in the figure. Since the present set of graphic characters is 5 dots high, the graphic printing speed can be increased up to 500%.

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All-Points-Addressable Print Wheel

When the 31 special characters on a normal 96-character print wheel are replaced with the graphic characters shown in the figure, the graphic printing speed for printing all-point-addressable graphics can be significantly increased. The remaining 65 characters are sufficient to accommodate the normal data processing character set; therefore, letter quality text and higher speed graphics can be printed without changing the print wheel. The prior-art graphic character set is 4 dots high and is given by the 1,2,4 and 8 characters in the figure. Since the present set of graphic characters is 5 dots high, the graphic printing speed can be increased up to 500%.

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