Heat transfer printing device and printing method

Details Heat transfer printing device and printing method Heat transfer printing device and printing method

2004-11-15

2008-11-11

Nguyen, Judy (Department: 2854)

Typewriting machines

Including interposed inking device for record-medium

Ribbon-feeding mechanism

C400S234000, C400S236000, C400S229000, C400S223000

Reexamination Certificate

active

07448813

ABSTRACT:
Incorporates means for maintaining a constant tension in the printing ribbon (3) consisting of a loading drum (9-9') placed after the thermal print head (1) that attracts the ribbon to define a loop, thereby maintaining a constant tension throughout the printing stage to ensure the quality of this operation. The printing method consists of attracting or suctioning the printing ribbon (1) against the loading drum (9-9'), using an electrostatic system that involves creating an electric field between conductors (10) placed on the loading drum (9), or a pneumatic system that involves attracting the ribbon (1) by Venturi tubes (17) located inside the loading drum (9').

REFERENCES:
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patent: 5975777 (1999-11-01), Nelson et al.
patent: 6261012 (2001-07-01), Haas et al.
patent: 2002/0012559 (2002-01-01), Takahashi et al.
patent: 0 899 116 (1999-03-01), None
patent: 1 067 337 (1967-05-01), None
patent: 04368868 (1992-12-01), None
patent: 2000-255149 (2000-09-01), None

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