Browse Prior Art Database

Impact Printer

IP.com Disclosure Number: IPCOM000083257D
Original Publication Date: 1975-Apr-01
Included in the Prior Art Database: 2005-Mar-01
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Benscoter, WA: AUTHOR

Abstract

This impact printer simultaneously prints on the front side f and on the back side b of a form F, utilizing two hammers H1 and H2 on opposite sides of form F and two type slugs S1 and S2 on opposite sides of form F.

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Impact Printer

This impact printer simultaneously prints on the front side f and on the back side b of a form F, utilizing two hammers H1 and H2 on opposite sides of form F and two type slugs S1 and S2 on opposite sides of form F.

Ribbon R1 is disposed between type slug S1 and the front side f of form F, and ribbon R2 is disposed between type slug S2 and the back side b of form F. The slugs S1 and S2 may be carried by chains, and the type fonts on these two chains are identical as is illustrated for the numeral 7.

When hammer H1 is moved toward slug S1, printing is accomplished on the front side f by slug S1 and ribbon R1. When hammer H2 is moved toward slug S2, slug S2 and ribbon R2 print on the back side b of form F.

The impact printer thus simultaneously prints on the two sides f and b of form F and doubles the lines per minute print speed, while decreasing paper usage by one half as compared to a printer printing only on one side of a paper.

In lieu of fastening the slugs S1 and S2 on chains, these slugs may be in the form of trains and moveable about oval tracks while being unconnected from each other.

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