Recorders – Thermal recording
Patent
1990-09-18
1992-01-14
Fuller, Benjamin R.
Recorders
Thermal recording
219543, B41J 2335
Patent
active
050814710
ABSTRACT:
A true edge thermal printhead and method of fabrication wherein the printhead infrastructure is formed by thick film techniques and the individual laminations are formed in a predetermined order. The printhead infrastructure includes a dielectric substrate, a common electrode layer, a high temperature glaze, an electrode pattern, a low temperature glaze and a plurality of resistive heating elements formed on the edge of the infrastructure and interconnected to the electrode pattern and the common electrode layer. The common electrode layer is a unitary sheet of refractory conductive material that is compatible with the high firing temperatures required for the high temperature glaze, and includes multiple ground taps. The fine image electrode pattern is compatible with the reduced firing temperature of the low temperature glaze such that gold pastes may be efficaciously utilized in the formation of the electrode pattern. Driver chips for activating the resistive heating elements are mounted in the printhead infrastructure to enhance printhead performance. Thermistors may be mounted on the glaze and/or substrate to monitor printhead temperature.
REFERENCES:
patent: 4232213 (1980-11-01), Taguchi et al.
patent: 4636811 (1987-01-01), Bakewell
patent: 4651168 (1987-03-01), Terajima et al.
patent: 4705697 (1987-11-01), Nishiguchi et al.
patent: 4810852 (1989-03-01), Bakewell
Dynamics Research Corporation
Fuller Benjamin R.
Tran Huan H.
LandOfFree
True edge thermal printhead does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with True edge thermal printhead, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and True edge thermal printhead will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-544193