Carbon ribbon supply apparatus for a printer

Details Carbon ribbon supply apparatus for a printer Carbon ribbon supply apparatus for a printer

1988-06-03

1990-04-24

Pieprz, William

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

400234, 400242, 400246, 242 683, 242 571, B41J 3356

Patent

active

049195557

ABSTRACT:
The supply spindle for the carbon ribbon in a thermal printer is supported cantileverly at one end thereof by a pair of axially spaced bearings. The axis of the second bearing is slightly off center relative to the axis of the first bearing, the precise location of the second bearing being adjustable in a manner that tilts and thus orients the spindle axis relative to the frame of the thermal printer. This enables the supply spindle to be aligned to the other parts in the printer so as to prevent twisting and wrinkling of the carbon ribbon. The invention compensates for manufacturing and assembly tolerances in the thermal printer and results in a consistently reliable printing quality.

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patent: 3508718 (1970-04-01), Paul, Jr. et al.
patent: 3759456 (1973-09-01), Moneagle et al.
patent: 3767132 (1973-10-01), Edwards
patent: 3817173 (1974-06-01), Merbold et al.
patent: 4350064 (1982-11-01), Garnean
patent: 4438695 (1984-03-01), Maier et al.
patent: 4444364 (1984-04-01), Dahl et al.
patent: 4458591 (1984-07-01), Guaraldi
patent: 4591879 (1986-05-01), Yokota et al.
patent: 4610749 (1986-09-01), Barreto
patent: 4697516 (1987-10-01), Rombont
patent: 4709871 (1987-12-01), Tanaka et al.

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