Browse Prior Art Database

Double Sided Printer

IP.com Disclosure Number: IPCOM000052328D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 93K

Publishing Venue

IBM

Related People

Kuntzleman, HC: AUTHOR [+2]

Abstract

Molecular matrix printing technology relies on the energization of suitable leuco dyes to form discernable marks on paper. In practice, the paper can be impregnated with a dye combination prior to printing, or it can be added during the printing operation itself. Because this technology is a surface phenomenon, double-sided printing is possible. As shown in the figure, a write head 2 and wetting mechanism 4 are positioned on one side of the paper 6 which is to be printed upon. A platen 8 is placed on the other side of the paper 6 opposite the write head 2. Another write head 2', wetting mechanism 4' and platen 8' combination is placed in the print path to effect almost simultaneous printing on the other side of the paper 6.

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Double Sided Printer

Molecular matrix printing technology relies on the energization of suitable leuco dyes to form discernable marks on paper. In practice, the paper can be impregnated with a dye combination prior to printing, or it can be added during the printing operation itself. Because this technology is a surface phenomenon, double-sided printing is possible. As shown in the figure, a write head 2 and wetting mechanism 4 are positioned on one side of the paper 6 which is to be printed upon. A platen 8 is placed on the other side of the paper 6 opposite the write head 2. Another write head 2', wetting mechanism 4' and platen 8' combination is placed in the print path to effect almost simultaneous printing on the other side of the paper 6.

The respective printing assemblies (each combination of write head, wetting mechanism and platen) are displaced relative to each other. Synchronism and alignment of the print line would be program controlled by suitable circuitry.

An alternative approach to double-sided printing would be to reverse the paper mechanically and feed it back to a single print assembly with its unprinted side up. The present and future achievable printing speeds of molecular matrix chemistry technology suggests that high throughputs could be so achieved.

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