Provided is an image forming apparatus including a temperature sensing circuit to which a temperature sensing element is electrically connected, wherein a surface of a heater on a side where the temperature sensing element is provided is in contact with the inner surface of a film, a heating element is provided in a primary side circuit which is electrically connected to a commercial power supply, and the temperature sensing circuit is electrically insulated from both of the primary side circuit and a secondary side circuit which is electrically insulated from the primary side circuit.

Provided is an image forming apparatus including a temperature sensing circuit to which a temperature sensing element is electrically connected, wherein a surface of a heater on a side where the temperature sensing element is provided is in contact with the inner surface of a film, a heating element is provided in a primary side circuit which is electrically connected to a commercial power supply, and the temperature sensing circuit is electrically insulated from both of the primary side circuit and a secondary side circuit which is electrically insulated from the primary side circuit.

Provided is an image forming apparatus including a temperature sensing circuit to which a temperature sensing element is electrically connected, wherein a surface of a heater on a side where the temperature sensing element is provided is in contact with the inner surface of a film, a heating element is provided in a primary side circuit which is electrically connected to a commercial power supply, and the temperature sensing circuit is electrically insulated from both of the primary side circuit and a secondary side circuit which is electrically insulated from the primary side circuit.

An atomizer includes a housing, a base and an atomization component. The housing includes a mouthpiece end and an opening end, the base is plugged into the opening end of the housing, an electronic cigarette liquid (e-liquid) storage chamber and an airflow channel are provided inside the housing; wherein the atomization component includes a porous heating element, the porous heating element includes a porous element and a heating element provided in the porous element, the porous element is provided in the airflow channel, and the porous element includes a porous body and a porous boss protruding from the porous body and extending radially along the porous body, the porous boss traverses the airflow channel and is in communication with the e-liquid storage chamber.

An atomizer includes a housing, a base and an atomization component. The housing includes a mouthpiece end and an opening end, the base is plugged into the opening end of the housing, an electronic cigarette liquid (e-liquid) storage chamber and an airflow channel are provided inside the housing; wherein the atomization component includes a porous heating element, the porous heating element includes a porous element and a heating element provided in the porous element, the porous element is provided in the airflow channel, and the porous element includes a porous body and a porous boss protruding from the porous body and extending radially along the porous body, the porous boss traverses the airflow channel and is in communication with the e-liquid storage chamber.

An electric gas flow heater has a grid-like heating element through which exhaust gas can flow axially, and which forms an electrical resistance heating. The grid-like heating element includes radially successive layers of band-like material, wherein the layers, in an axial view of the heating element, are bent in an undulating manner and include valleys and peaks. The layers that are located between the radially outermost layer and the radially innermost layer are attached by their peaks and valleys to the respectively radially adjacent layer, so that flow-through openings are formed between the layers. The wavelengths of the layers are increasing radially outwards.

An electric gas flow heater has a grid-like heating element through which exhaust gas can flow axially, and which forms an electrical resistance heating. The grid-like heating element includes radially successive layers of band-like material, wherein the layers, in an axial view of the heating element, are bent in an undulating manner and include valleys and peaks. The layers that are located between the radially outermost layer and the radially innermost layer are attached by their peaks and valleys to the respectively radially adjacent layer, so that flow-through openings are formed between the layers. The wavelengths of the layers are increasing radially outwards.

An atomizer includes a ceramic core, a first heating wire, and a second heating wire. The ceramic core includes a body including a through hole. The first heating wire is soldered on the second heating wire.

An atomizer includes a ceramic core, a first heating wire, and a second heating wire. The ceramic core includes a body including a through hole. The first heating wire is soldered on the second heating wire.

An electronic cigarette includes a liquid supply including liquid material, a heater operable to heat the liquid material to a temperature sufficient to vaporize the liquid material and form an aerosol, a wick in communication with the liquid material and in communication with the heater such that the wick delivers the liquid material to the heater, at least one air inlet operable to deliver air to a central air passage upstream of the heater, and a mouth end insert having at least two diverging outlets. The electronic cigarette can also include an air flow diverter which directs incoming air away from a heating zone of the heater.