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Browse Prior Art Database

Duplex Continuous-Form Printing

IP.com Disclosure Number: IPCOM000102630D
Original Publication Date: 1990-Dec-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 64K

Publishing Venue

IBM

Related People

John, CC: AUTHOR [+2]

Abstract

Disclosed is a system consisting of a software pre-processor, microcode and a microcode-controlled printer which supports printing on both sides of continuous-form paper (duplex). This feature provides the bulk printing environment of continuous-form printers with the advantages of duplex output. Duplex output reduces paper costs and provides output formats that closely resemble the book format of conventional documents.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 60% of the total text.

Duplex Continuous-Form Printing

       Disclosed is a system consisting of a software
pre-processor, microcode and a microcode-controlled printer which
supports printing on both sides of continuous-form paper (duplex).
This feature provides the bulk printing environment of
continuous-form printers with the advantages of duplex output.
Duplex output reduces paper costs and provides output formats that
closely resemble the book format of conventional documents.

      The software pre-processor formats the data, for optimal duplex
processing, prior to sending the data to the printer.  A flag in the
print image data specifies that subsequent page segments are in
duplex format.  The page segments are formatted and sent to the
printer in a ABABABAB sequence (A = Side A, B = Side B of a
physical page).  The minimum print buffer size required for this
sequence is the amount for two page segments.  The page segment
sequence depends on the type of duplex output required.  If the
duplex output is to be bursted into separate pages, then the logical
page sequence of Fig. 1a would be used.  If the duplex output is to
be read as a continuous-form listing, then the logical page sequence
of Fig. 1b would be used. Fig. 1b allows the reader to flip the last
page over to continue reading the rest of the document on the other
side of the page.

      A microcoded printer is required in conjunction with additional
printer hardware for duplex continuous-form printing.  Fig. 2...