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RIBBON CARTRIDGE WITH FOAM DRAG ELEMENT

IP.com Disclosure Number: IPCOM000022823D
Original Publication Date: 1976-Feb-29
Included in the Prior Art Database: 2004-Mar-26
Document File: 2 page(s) / 353K

Publishing Venue

Xerox Disclosure Journal

Abstract

A ribbon cartridge 10 includes a supply reel 18 having a central hub 20 about which is wound a supply of ribbon 21 bearing a desired marking material, such as ink or the like, Hub 20 has a central tubular portion 22 in~ cluding a cylindrical opening 24 therethrough for receiving a fixed shaft 26 in relatively movable relation so that hub 20 is freely rotatable about shaft 26, Shaft 26 extends upwardly from, and the lower end of tubular portion 22 is adapted to contact, a platform 28 which projects upwardly from the interior surface 30 of bottom portion 16 of the cartridge housing.

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Page 1 of 2

XEROX DISCLOSURE JOURNAL

RIBBON CARTRIDGE WITH FOAM
DRAG ELEMENT
R. D. Trezise
A. Wang

Proposed Classification

U.S. Cl. 197
Int. Cl. B41j

A ribbon cartridge 10 includes a supply reel 18 having
a central hub 20 about which is wound a supply of ribbon
21 bearing a desired marking material, such as ink or
the like, Hub 20 has a central tubular portion 22 in~
cluding a cylindrical opening 24 therethrough for
receiving a fixed shaft 26 in relatively movable
relation so that hub 20 is freely rotatable about shaft
26, Shaft 26 extends upwardly from, and the lower end
of tubular portion 22 is adapted to contact, a platform
28 which projects upwardly from the interior surface 30
of bottom portion 16 of the cartridge housing.

A plurality of stiffening ribs 32a-d also project up-
wardly from surface 30 and extend radially outwardly
from platform 28, A portion of each rib 32 overlies
platform 28 for optimum stability and rigidity. In
view of this relationship, tubular portion 22 of hub
20 is made sufficiently long in a downward direction

12

Volume 1 Number 2 February 1976 47

[This page contains 1 picture or other non-text object]

Page 2 of 2

RIBBON CARTRIDGE WITH FOAM DRAG ELEMENT (Cont~d)

so that, when positioned about shaft 26 in contact with
platform 28, ribbon 21 wound about hub 20 will be spaced
above platform 28 and ribs 32, but in contact with a drag

element 34 mounted on platform 28. Drag element 34 is
designed to provide a resistance to the removal of ribbon
from the supply reel 18, as wi...