Abstract: There is provided a placement position determining part that calculates a rising gradient of an output value of the infrared sensor every after passage of a first predetermined time and performs a placement position determining operation of determining that a placement position of a cooking vessel is improper when the rising gradient is smaller than a first threshold value, and the placement position determining part performs the placement position determining operation after a lapse of a second predetermined time from the start of heating, thereby accurately determining that the cooking vessel is improperly placed on a top plate and preventing overheating of the cooking vessel.

Abstract: First material discriminating unit for comparing a magnitude of an input current to inverter circuit and a magnitude of a heating coil current to discriminate a material of cooking container between a non-magnetic body and a magnetic body; second material discriminating unit for comparing a magnitude of the heating coil current and an ON time of switching element when discriminated as the magnetic body by first material discriminating unit to discriminate the material of cooking container as magnetic SUS or iron are arranged, where control unit sets a control temperature lower when the material is discriminated as magnetic SUS by second material discriminating unit than when the material is discriminated as iron so that the temperature of cooking container can be controlled to a predetermined temperature at high accuracy even if cooking container is configured by magnetic SUS, similar to when configured by iron.

Abstract: There is provided a placement position determining part that calculates a rising gradient of an output value of the infrared sensor every after passage of a first predetermined time and performs a placement position determining operation of determining that a placement position of a cooking vessel is improper when the rising gradient is smaller than a first threshold value, and the placement position determining part performs the placement position determining operation after a lapse of a second predetermined time from the start of heating, thereby accurately determining that the cooking vessel is improperly placed on a top plate and preventing overheating of the cooking vessel.

Abstract: There are provided amplifying part (5) for amplifying an output signal of infrared detecting part (4), gain switching part (6) for switching a gain of amplifying part (5) to one of a plurality of gains according to magnitude of the output signal of amplifying part (5), and measuring part (12) for calculating a temperature based on an increase in the output signal of amplifying part (5) relative to an initial reference value, and after writing command input part (11) input a writing command, the output signal of amplifying part (5) is written as the initial reference value for each of the plurality of gains in storage medium (13). Since measuring part (12) uses the initial reference value corresponding to the gain as the initial reference value, temperature of object to be heated (1) can be accurately measured over a wide range.

Abstract: An induction-heating cooking device includes: an insulating plate which is partially or entirely light-transmissive, and on which an object to be heated is placed; a heating coil provided under the insulating plate, for heating the object to be heated; a display section for indicating a portion to be heated by the heating coil through the insulating plate; and an output control section for controlling electrical conduction to the heating coil, wherein the display section includes a light emitting section which is provided in the vicinity of a magnetic flux generated by the heating coil, and the light emitting section is laid and connected radially along a radial direction of the heating coil for indicating a portion to be heated by the heating coil.

Abstract: An induction-heating cooking device includes: an insulating plate which is partially or entirely light-transmissive, and on which an object to be heated is placed; a heating coil provided under the insulating plate, for heating the object to be heated; display means for indicating a portion to be heated by the heating coil through the insulating plate; and output control means for controlling electrical conduction to the heating coil, wherein the display means includes light emitting means which is provided in the vicinity of a magnetic flux generated by the heating coil, and the light emitting means is laid and connected radially along a radial direction of the heating coil for indicating a portion to be heated by the heating coil.

Abstract: A high-frequency inverter having a simple circuit construction capable of executing a constant-frequency operation and a zero-volt switching operation and an induction heating cooker using the high-frequency inverter are disclosed. The high-frequency inverter is comprised of an inverter circuit for converting a direct current from a DC power source into a high-frequency current and a control circuit for controlling the inverter circuit. The inverter circuit is comprised of: a one-transistor inverter constructed of a heating coil whose one terminal is connected to one terminal of a DC power source, a first switching element connected in series between the other terminal of the heating coil and the other terminal of the DC power source, and a first resonance capacitor connected so as to form a resonance circuit with the heating coil; and a series circuit connected in parallel with the heating coil and constructed of a second switching element and a second resonance capacitor.

Abstract: The present invention relates to a device of regulating a running position of unsealing tape for packing film, in which in the normal operation unsealing tape runs on a linear normal running position disposed between projecting portions and by being guided by the projecting portions and while being in contact therewith, if the unsealing tape runs on the outside of an annular groove by being shifted to either side in the width direction, as a result of a relative movement of the annular groove in the direction reverse to the rotational direction of the regulating roller with the rotation of the regulating roller, the unsealing tape gradually enters the annular groove by being guided by corner portions and on the side of openings produced by separating portions and while being in an abrasive contact therewith, thereafter, the unsealing tape is drawn to the normal running position by being guided by approaching portions and while being in contact therewith and finally the unsealing tape is returned to the normal

Abstract: A packaging device wherein a thermoplastic packaging sheet is supplied to a peripheral part of a pocket opening of a winding wheel while a box-like item, transported into the pocket, is continuously transferred, the item being transported out of the pocket and delivered whereby the sheet is wound in a U-shape along the surface of the item, and both free ends of the sheet are folded, along the surface of the item while the item is continuously transferred, and then overlapped to thermally adhere to each other, wherein an applying wheel continuously rotating synchronously in a direction opposite to that of the winding wheel, is disposed on a downstream side of the winding wheel with each of the outer circumferences of the winding wheel and the applying wheel being provided with a plurality of pockets having the items transported therein, the winding and applying wheels, being equally spaced apart in a rotational direction and being continuously oppositely rotated in a synchronous manner, with both pockets being

Abstract: Automatic splicing apparatus includes a first supply containing a first web and a second supply containing a second web. An operable puller is engaged with the first web for withdrawing the same from the first supply and moving the first web along a predetermined path. Cutters are provided for establishing a trailing end on the first web and a leading end on the second web. The presence of the trailing end in the predetermined path is detected and a splicing station is positioned in the path for butt-splicing the leading edge of the second web to the trailing end of the first web in response to detecting the presence of the trailing edge, all without interrupting operation of the puller.

Abstract: Apparatus for attaching seal-strip segments to individual packages, where the segments are in the form of a strip having opposed surfaces, includes a transfer element moveable periodically between a receiving position for receiving a segment from a supply thereof and a transfer position for transferring the segment. The transfer element releasably holds a segment with one surface thereof in contact with the element. A rotatable turret is provided having a plurality of stations at equal angular positions about the axis of rotation of the turret, each station having a support surface for supporting a segment. Rotation of the turret is synchronized with movement of the transfer element such that, during one revolution of the turret, a different one of the stations is operatively associated with the transfer element each time the latter moves to its transfer position.