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Ink Ribbon Feed Roller

IP.com Disclosure Number: IPCOM000116679D
Original Publication Date: 1995-Oct-01
Included in the Prior Art Database: 2005-Mar-31
Document File: 2 page(s) / 38K

Publishing Venue

IBM

Related People

Hada, T: AUTHOR [+3]

Abstract

Disclosed is a roller in an ink ribbon cartridge. The center of this roller made of a foaming agent (ex. sponge) is covered closely by ceramic particles with silicon as an elastic bond, then another silicon layer covers the ceramic particles again.

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

Ink Ribbon Feed Roller

      Disclosed is a roller in an ink ribbon cartridge.  The center
of this roller made of a foaming agent (ex.  sponge) is covered
closely by ceramic particles with silicon as an elastic bond, then
another silicon layer covers the ceramic particles again.

      The ceramic particles are economical SiC and their diameters
are about 3 to 300um.  The 3 to 50um high silicon layer covering
surface of this roller is along the rugged ceramic particles.  This
fine rugged silicon surface touches texture of an ink ribbon softly
and certainly.  Therefore, it is hard to damage the ribbon by this
roller, and the force of the roller catching and feeding the ribbon
is very high.

      Silicon's affinity for oil in ink is quite low, so silicon
repels ink.  Accordingly, the properties hardly change compare to
general rollers made of rubber, and the friction coefficient of this
roller can be kept high level for a long time.  This is why silicon
is chosen for it.

      The silicon and ceramic layers prevent the roller from ink
soaking into the roller, and this makes the foaming agent keep good
quality and high modulus of elasticity.  Consequently, it is not
necessary to pinch the ribbon tight; therefore, the ribbon life
becomes longer and the force of the roller catching and feeding the
ribbon becomes stable.  On the other hand, the prevention from ink
soaking into the roller makes good use of ink and is able to extend
the ribbon life.