Browse Prior Art Database

Structure Paper Feed Mechanism

IP.com Disclosure Number: IPCOM000104727D
Original Publication Date: 1993-May-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Satoh, T: AUTHOR [+3]

Abstract

Disclosed is a structure of a paper feed mechanism for a printer wherein a ceramic abrasive grain and TEFLON* coating is applied to the perimeter of a feed roller in order to avoid ink transcription onto the feeded paper from the feed roller.

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

Structure Paper Feed Mechanism

      Disclosed is a structure of a paper feed mechanism for a
printer wherein a ceramic abrasive grain and TEFLON* coating is
applied to the perimeter of a feed roller in order to avoid ink
transcription onto the feeded paper from the feed roller.

      A coat of ceramic abrasive grain which has the characteristics
of being uniform and very fine in roughness is coated onto the
sections which cause ink transcription, on top of which TEFLON
coating is applied.  The ceramic abrasive grain makes it difficult
for ink to adhere onto the paper by touching the paper by point
contact instead of by surface contact.  The TEFLON coating makes it
possible to avoid ink transcription by making it difficult for ink to
remain on the dale of the abrasive grain, as well as making it
possible for the ink to be easily wiped off if remaining.

      Concerning the application of paper clamp mechanism and paper
feed roller on passbook/cut-form printers, during the printing
process, the surface of the paper is strongly pinched between the
movable platen and the bar-back.  Ink transcription is avoided by
applying ceramic abrasive grain and TEFLON coating onto the portions
where surface contact arises between the paper and the bar-back as
shown in Fig. 1.  Since the paper is fed through prior to the printed
ink completely drying, the paper feed roller just prior to and after
printing becomes very dirty from the ink.  For this reason, by
applying cera...