Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Franking Letters with an Ink-Jet Printing Head

IP.com Disclosure Number: IPCOM000118214D
Original Publication Date: 1996-Nov-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Hoeschele, M: AUTHOR [+2]

Abstract

Disclosed is a method for printing or franking letters, such as registered mail or air mail.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 77% of the total text.

Franking Letters with an Ink-Jet Printing Head

      Disclosed is a method for printing or franking letters, such as
registered mail or air mail.

      Different franking machines are known in the prior art, e.g.,
franking machines which print letters by means of a rotating stamp or
by printing a paper slip which subsequently is adhered to the letter.

      However, using these machines changing the printing style is
only possible in a limited way.  Normally, the whole stamp or at
least parts thereof have to be changed.  In addition to that,
additional gumming has to take place and using paper slips is paper
consuming.

      Letters can be printed by means of an Ink-Jet printing head
which allows for a distance variation as large as possible between
the paper to be printed and the head.

      To ensure the necessary distance, the surface of the area to be
printed is sensed for roughness before printing.  Depending on this
measurement, an optimum distance between paper and printing head is
installed.

      By using this method, the layout of the printer is directly
programmable and, therefore, absolutely flexible.

      The Figure schematically shows the assembly used.  Two printing
heads are used, since the letter is printed using two colors.  The
distance measuring assembly, the printing heads as well as the
reading head are mounted on a common carrier.  This carrier is
movable in the x,y-direction.

The method runs as follows:
  o ...