| 摘要 |
A toner feeder matrix for a printing apparatus of the type named "toner jet" printing apparatus, and in which a dry colour powder, generally named "toner" (2), is transferred, by a direct method, from a rotating toner feeder roll (1), through toner feeder bores (8) of a fixedly mounted toner feeder matrix (3), which is formed with a flexible printing circuit (9), and down onto an object (5) to be printed, for instance a paper, which is conveyed over a support roll (4), whereupon the colour powder which has deposited on the paper (5) is finally fixed to the paper by means of a heating apparatus (12). The toner feeder matrix (3) comprises a base (13) of a thermoplastic material, which, at the upper surface thereof, is laminated with a thin copper foil, which by an etching process has been formed to electrically conducting rings (9) round the toner feeder bores (8), and which, at the lower surface thereof, is laminated with a thin stabilising copper foil (18), and in which the combined matrix (3, 9, 14) is bent to a curved shape adapted to the shape of the toner feeder roll (1) of the actual printing apparatus, and which in the curved shape has been treated by a press and heating process, whereby the thermoplastic base (13) has been solidified in the said curved shape. The invention also relates to a method of manufacturing a toner feeder matrix of the above mentioned type.
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