Surety is performing system maintenance this weekend. Electronic date stamps on new Prior Art Database disclosures may be delayed.
Browse Prior Art Database

Soft Touch Roller for Feed Roller

IP.com Disclosure Number: IPCOM000121867D
Original Publication Date: 1991-Oct-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 2 page(s) / 54K

Publishing Venue


Related People

Kanno, T: AUTHOR


Disclosed is a soft-touch roller which has a soft body but a hard surface.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 91% of the total text.

Soft Touch Roller for Feed Roller

      Disclosed is a soft-touch roller which has a soft body
but a hard surface.

      We sometimes need to add slight force to paper medium in the
paper-handling device for the purpose of preventing unexpected
movement of paper and prepare the rubber roller using soft rubber
material. Soft rubber, however, has a high frictional surface, which
causes some troubles for paper handling.

      To achieve the roller having the above characteristics, a
urethane foam roller with "skin" was proposed, but foam material is
actually unstable against high humidity, high temperature and
ultraviolet rays.

      Disclosed in this article is the soft-touch roller having the
above required characteristics.

      Fig. 1 shows the shape of the roller, which has a rim and some
ribs inside.  Based on the experience,the hardness of the rubber
material should be 60 to 90 degrees in Shore-A scale, and the
thickness of rim and ribs is less than 1 mm.

      Fig. 2 shows one example of the application. The feed rollers
for cut form (Fig. 2-1) are made of solid rubber and should be opened
for continuous-form use (Fig. 2-2) because it is fed by a tractor
unit. At that time, continuous form has no resistant force against
the horizontal force caused by horizontal movement of a printhead.

      To prevent this, the rollers (D:14 mm, d:8 mm, t06 mm, W:2.8
mm, 70 deg. in Shore-A scale) are installed on the slot (dia. 8 mm)
of the solid rol...