摘要:
Provided is a heating resistor element including: an insulating substrate including a glass material; a heat accumulating layer bonded to the insulating substrate through heating to temperature ranging from an annealing point to a softening point in a state of being adhered to a surface of the insulating substrate, and including the same material as the glass material of the insulating substrate; and a heating resistor provided on the heat accumulating layer, in which, on at least one of bonded surfaces between the insulating substrate and the heat accumulating layer, at least one of the insulating substrate and the heat accumulating layer is provided with a concave portion in a region opposed to the heating resistor to form a hollow portion. Accordingly, deformation caused by a difference in coefficient of thermal expansion is suppressed to improve printing quality.
摘要:
A thermal printer includes a rotatable platen roller (2); an elongated thermal head (3) which is movable toward or away from the platen roller; and a head supporting member (6) having an elongated head supporting portion for supporting the thermal head formed at an end. A heat radiation plate (4) through which heat generated from the thermal head during printing can escape is arranged between the thermal head and the head supporting portion, and the thermal head can be adjustably curved toward the platen roller via the heat radiation plate by an adjusting member (12) arranged in the head supporting portion.
摘要:
A thermal recording head having an electrically resistive heat-generating portion (8, 46, 66) formed on an thin-walled end portion of a ceramic substrate (2, 32, 60) and electrically connected to recording and return-circuit electrodes (4, 6, 20, 42, 44, 64, 66). A reinforcing or heat radiating member (12, 20, 26, 28, 68) is disposed on at least one of opposite sides of the substrate such that a portion of the reinforcing or heat radiating member is located at the thin-walled end portion of the substrate. The thin-walled end portion is preferably partially defined by a shoulder surface (40) which extends from one of opposite major surface of the substrate and terminates in the end face of the thin-walled end portion. The substrate preferably has a thermal conductivity within a range between 0.002 cal·cm/sec·cm 2 ·°C and 0.03 cal·cm/sec·cm 2 ·°C, while the heat radiating member preferably has a thermal conductivity higher than 0.01 cal·cm/sec·cm 2 ·°C. The conductivity of the substrate is preferably lower than that of the heat radiating member.
摘要:
A thermal recording head having an electrically resistive heat-generating portion (8, 46, 66) formed on an thin-walled end portion of a ceramic substrate (2, 32, 60) and electrically connected to recording and return-circuit electrodes (4, 6, 20, 42, 44, 64, 66). A reinforcing or heat radiating member (12, 20, 26, 28, 68) is disposed on at least one of opposite sides of the substrate such that a portion of the reinforcing or heat radiating member is located at the thin-walled end portion of the substrate. The thin-walled end portion is preferably partially defined by a shoulder surface (40) which extends from one of opposite major surface of the substrate and terminates in the end face of the thin-walled end portion. The substrate preferably has a thermal conductivity within a range between 0.002 cal·cm/sec·cm²·°C and 0.03 cal·cm/sec·cm²·°C, while the heat radiating member preferably has a thermal conductivity higher than 0.01 cal·cm/sec·cm²·°C. The conductivity of the substrate is preferably lower than that of the heat radiating member.
摘要:
A recording head operable to apply an electric current to an electrically resistive layer, the head including two substrates each of which supports at least one electrode on one of opposite major surfaces thereof. At least one of the two substrates (2, 4) has an electrically insulating property and a lower wear resistance than the electrode(s) (6, 8), and each of the at least one substrate has a proximal portion, and a distal end portion (2a, 4a) extending from the proximal portion by a predetermined distance (L) from the proximal portion for contact with said electrically resistive layer. The distal end portion having a thickness (d) smaller than that of the proximal portion, as measured in a direction perpendicular to a direction of extension of the distal end portion. The two substrates (2, 4) are superposed on each other such that a non-electrode-supporting one of the opposite major surfaces of one of the two substrates faces an electrode-supporting one of the opposite major surfaces of the other substrate.
摘要:
Provided is a heating resistor element including: an insulating substrate including a glass material; a heat accumulating layer bonded to the insulating substrate through heating to temperature ranging from an annealing point to a softening point in a state of being adhered to a surface of the insulating substrate, and including the same material as the glass material of the insulating substrate; and a heating resistor provided on the heat accumulating layer, in which, on at least one of bonded surfaces between the insulating substrate and the heat accumulating layer, at least one of the insulating substrate and the heat accumulating layer is provided with a concave portion in a region opposed to the heating resistor to form a hollow portion. Accordingly, deformation caused by a difference in coefficient of thermal expansion is suppressed to improve printing quality.