DE4111625

The soldering zone for the collecting rails for a heated vehicle window, where the heating system is applied to the glass by screen printing and stencil printing with conductive silver paste, is a screen with electrical connections to the unscreened collection rail sections. The screen size forming the soldering zone pattern is between the resolution of the stencil for the threshold value of the dot size and 2.5 mm. The screen is a band of parallel positive and negative lines on the longitudinal line of the collection rails. The width of the positive lines is 1.0-1.5 mm, and the width of the negative lines is 0.2-0.3 mm. The screening over the soldering zone is extended over further collection rails or all the collectors on bonding the heating conductor. ADVANTAGE - The silver layer can be soldered, without requiring a double printing action and without requiring special printing screens. The underlying ceramic dyestuff has no advese effect on the surface of the silver to the soldered.