Label printer such as a printer for printing self-adhesive label

Details Label printer such as a printer for printing self-adhesive label Label printer such as a printer for printing self-adhesive label

1994-09-22

1996-08-20

Bennett, Christopher A.

Typewriting machines

Typing by other than type-face or type-die

Thermal

400 56, 101288, 347198, B41J 2315

Patent

active

055472931

ABSTRACT:
A label printer for printing labels can typically have a pressure roller and a corresponding print head, which print head can have a support, a spring base plate, and a spring disposed between the support and the spring base plate to bias the print head into engagement with the pressure roller. The spring base plate can be rotationally mounted on a bearing shaft which is preferably parallel to the pressure roller, and the free end of the bearing shaft can be flattened over a portion of its length to form two parallel key surfaces for engaging with a locking element that adjusts the biasing force of the spring by engaging and positioning the spring base plate. The locking element has a keyhole-like opening, with a circular portion having a diameter which is approximately equal to the diameter of the free end of the bearing shaft, and a narrow portion having a width approximately equal to the distance between the key surfaces of the bearing shaft to thereby non-rotationally fix the locking element to the bearing shaft.

REFERENCES:
patent: 4666319 (1987-05-01), Hirosaki et al.
patent: 4897670 (1990-01-01), Hasegawa et al.
patent: 5014073 (1991-05-01), Sone et al.
patent: 5028155 (1991-07-01), Sugiura et al.
patent: 5156467 (1992-10-01), Kitahara et al.

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