Browse Prior Art Database

Contact Point for Paper Thickness Measurement

IP.com Disclosure Number: IPCOM000100352D
Original Publication Date: 1990-Apr-01
Included in the Prior Art Database: 2005-Mar-15
Document File: 1 page(s) / 32K

Publishing Venue

IBM

Related People

Takayama, T: AUTHOR [+2]

Abstract

Disclosed is a simple structure for the contact point required to obtain the true absolute paper thickness.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 100% of the total text.

Contact Point for Paper Thickness Measurement

       Disclosed is a simple structure for the contact point
required to obtain the true absolute paper thickness.

      This structure will be best understood with reference to Fig.
1.  The focal point of Fig. 1 is that the elastic material 1 covers
the tip of the rigid metal contact point 2.  In accordance with this
material, the pressed area of the paper 4 against a surface 3 is
wider and the squeeze of the paper becomes negligible at measuring.

      Simple rigid metal contact judges the paper thickness thinner
than the real thickness because the rigid top squeezes the paper.
The thicker the paper is, the larger the delta between the
measurement value and the true thickness.

      Fig. 2 shows the difference of the measuring data (area 3 in
Fig.  2) between simple rigid metal contact point and elastic
material contact point.  The horizontal axis shows the real paper
thickness and the vertical axis shows the measured paper thickness
data.  The curve 1 shows the data measured by the simple rigid metal
contact point and the curve 2 shows the data measured by the elastic
material contact point.