Browse Prior Art Database

Mechanism for Preventing Paper Rising

IP.com Disclosure Number: IPCOM000119726D
Original Publication Date: 1991-Feb-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Endoh, M: AUTHOR [+2]

Abstract

Disclosed is a mechanism for a high-speed passbook printer, using the narrow head-gap print head, required to prevent the passbook leaf rising and also to control the ribbon path around the head nose.

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This is the abbreviated version, containing approximately 100% of the total text.

Mechanism for Preventing Paper Rising

      Disclosed is a mechanism for a high-speed passbook
printer, using the narrow head-gap print head, required to prevent
the passbook leaf rising and also to control the ribbon path around
the head nose.

      A high-speed passbook printer uses a narrow head-gap print head
1 which requires the ribbon shield 3 to separate the ribbon 2 from
the passbook leaf 4.  But the air-layer between the passbook leaves
causes the leaf rising and pushes up the ribbon shield.  At this
condition, the ribbon smudges the passbook leaf through the hole of
the ribbon shield because the head-gap becomes too narrow to keep the
ribbon path (refer to Fig. 1).

      This mechanism has a pair of levers 5 at the side of the head
nose 6.  The levers compress the air-layer between the leaves 7 by
pinching with the platen 8 to prevent the leaf rising and also add an
adequate tension to the ribbon 9 to keep the ribbon away from the
ribbon shield 10 (refer to Fig. 2).