| 摘要 |
PURPOSE:To attain miniaturization and the extension of life and to enable high grade recording, by forming a second heat generating resistor having a length corresponding to that of the heat generating resistor row on the other surface of a flexible insulating substrate at a position except said heat generating resistor row. CONSTITUTION:A heat resistant org. film, for example, a polyimide film 11 is used as a flexible insulating substrate and a membrane resistor film 12 is adhered to one surface of said film 11 and leads 13 are laminated and adhered to said resistor film 13 by vacuum vapor deposition. Patterns are formed by photoetching to form a heat generating resistor row 14 and an abrasion protective film 15 is adhered thereto. Next, a resistor film is adhered to the other surface of the polyimide film 11 and a strip like heat generating resistor 16 is formed by photoetching so as to make the length thereof almost equal to that of the resistor row and to be almost parallel to said resistor row in the inlet side of recording paper. Lead electrodes 17 are provided to both terminals of the resistor film and insulated by coating an insulating resin 18 except the take-out parts thereof. Next, the insulating substrate is adhered to a heat dissipating plate 20 comprising a metal having good heat conductivity. |
