Appeal No. 1999-2850
Application No. 09/042,861
on the cartridge which moves the cartridge ribbon. The drive member moves
responsive to the movement of the frangible member and the frangible member is made to
break, or, in another embodiment, to deform, responsive to the drive member presenting a
resistance to movement above a predetermined level. This provides for a printer which
can withstand higher speeds and abrupt speed changes and which includes a longer,
more densely packed, ribbon to provide extended ribbon life which is reliable, economical
and readily replaced.
Representative independent claim 1 is reproduced as follows:
1. A printer apparatus comprising:
a print ribbon supported on a cartridge;
a drive member moveable on the cartridge, wherein movement of the
drive member is operative to move the ribbon;
a frangible member, said frangible member in operative connection
with the drive member, wherein the drive member is movable responsive to
the movement of the frangible member, and wherein the frangible member is
configured to break responsive to the drive member presenting a resistance
to movement above a predetermined level.
The examiner relies on the following references:
Anderson 780,490 Jan. 24,1905
Trigilio 2,892,329 Jun. 30, 1959
Norris 2,889,162 Jun. 02, 1959
Hanke 3,359,171 Dec. 19, 1967
Fabrizio et al. (Fabrizio) 3,753,625 Aug. 21, 1973
2
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