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Re-inking Type Ink Ribbon Cartridge

IP.com Disclosure Number: IPCOM000121872D
Original Publication Date: 1991-Oct-01
Included in the Prior Art Database: 2005-Apr-03
Document File: 3 page(s) / 86K

Publishing Venue

IBM

Related People

Kanno, T: AUTHOR [+2]

Abstract

Disclosed is a device to improve the ink usage of a re-inking type ribbon cartridge in which there is an ink roll made with elastic, porous material, such as foam rubber. In the case of a conventional re-inking type ribbon cartridge, ink is transfered to an ink ribbon through a re-inking roll or a ribbon drive roller to which an ink roll contacts. As for the "re-inking roll" method, the usage of ink contained in the ink roll is less than 60% of the ink weight contained in the ink roll. The key reason of the low usage depends on the low contact pressure of the re-inking roll and the ink roll because the pressure is generated only by ribbon tension.

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This is the abbreviated version, containing approximately 52% of the total text.

Re-inking Type Ink Ribbon Cartridge

      Disclosed is a device to improve the ink usage of a
re-inking type ribbon cartridge in which there is an ink roll made
with elastic, porous material, such as foam rubber. In the case of a
conventional re-inking type ribbon cartridge, ink is transfered to an
ink ribbon through a re-inking roll or a ribbon drive roller to which
an ink roll contacts. As for the "re-inking roll" method, the usage
of ink contained in the ink roll is less than 60% of the ink weight
contained in the ink roll. The key reason of the low usage depends on
the low contact pressure of the re-inking roll and the ink roll
because the pressure is generated only by ribbon tension. On the
other hand, the "ribbon drive roller" method can obtain the large
pressure by, for example, the movement of the ink roll toward the
ribbon drive roller, and the ink usage is approximately 75% of the
ink weight contained in an ink roll; however, the excessive ink is
transfered at the clamped area of the ribbon through the drive roller
when a printer stops to print, and it causes non-uniform print
density on a page.

      The mechanism will be well understood with reference to the
figures which schematically show the structure of a new ink ribbon
cartridge. Fig. 1 shows the structure of a re-inking type ink ribbon
cartridge. The cartridge has an ink ribbon fabric 1 which is endless
and sometimes seamless, an ink roll 2 which is made with elastic,
porous material, such as foam rubber, a re-inking roll 3 which is
pressed to the ink roll 2 by the ribbon tension and works to re-...