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Browse Prior Art Database

Adjustment-Free Method for Passbook Printer

IP.com Disclosure Number: IPCOM000100356D
Original Publication Date: 1990-Apr-01
Included in the Prior Art Database: 2005-Mar-15
Document File: 4 page(s) / 90K

Publishing Venue

IBM

Related People

Matsukawa, T: AUTHOR

Abstract

Disclosed is a method to save labor involved in the mechanical adjustment of a passbook printer.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 53% of the total text.

Adjustment-Free Method for Passbook Printer

       Disclosed is a method to save labor involved in the
mechanical adjustment of a passbook printer.

      Prior printers need mechanical adjustment to adjust the
vertical/ horizontal location of printing as shown in Fig. 1.
Passbook printer usually has an image scanner for Optical Page
Recognition (OPR) and Optical Line Finder (OLF). The disclosed method
uses this image scanner, a special pre-printing master chart and
Non-Volatile RAM to adjust the printing location automatically and
non-mechanically.

      The pre-printing master chart is shown in Fig. 2.  The way to
adjust is as follows.

      Step 1: Measure the distance between the Top Edge Sensor and
the
      Image Scanner.
      Feed the master chart and count the steps of the feed
      motor starting from the time when the Top Edge Sensor
      detects the top edge of the master chart until the time
      when the Image Scanner detects Mark-1.  Save the value
      into NV-RAM.
      Step 2: Get the horizontal position of Image Scanner
      from the ideal position.
      Scan Mark-2 with the Image-Scanner and get the
      horizontal position of the Image Scanner from the ideal
      position.  Save the value into NV-RAM.
      Step 3: Get the value to correct between the step of
      the feed motor and the real movement.
      Feed the master chart and count the steps of the feed
      motor starting from the time when the Image Scanner
      detects Mark-1 until the time it detects Mark-2.
      Calculate the value inch/step from the step and the
      distance between Mark-1 and Mark-2, and save the value
  ...