Abstract: The present invention relates to a method of manufacturing a wiring board comprising: a build-up layer, in which wiring patterns are piled with insulating layers; and a core substrate, which is separately formed from the build-up layer, the method comprising the steps of: separably forming the build-up layer on a plate-shaped support; electrically connecting the core substrate to the wiring patterns of the build-up layer on the support; and removing the support from the build-up layer so as to form the wiring board, in which the build-up layer is connected to the core substrate. By separably forming the build-up layer and the core substrate, the wiring board effectively exhibiting characteristics thereof can be produced.

Abstract: The present invention provides a fixing device and a digital photocopier which can shorten the time from an instruction of starting image formation to end of fixing. The fixing device is provided in a cylinder made of metal and having a small thickness, and includes a magnetic excitation coil. When the power source is turned on, all the electric power defined by subtracting an electric power amount consumed by components other than the fixing device is supplied to the magnetic excitation coil to perform heating. As the structural components of the photocopier and auxiliary devices added to the photocopier operate, the electric power defined by subtracting, from the maximum input electric power, the electric power consumed by the structural components of the photocopier and the auxiliary devices is supplied to perform heating. In this manner, the heat roller of the fixing device is heated, in a short time, to a temperature which enables fixing, so that the time required for first copying can be shortened.

Abstract: An image forming apparatus is provided with a pressing roller for pressing a sheet at the time of a fixing operation; a fixing roller having a hollow portion, facing the pressing roller, rising in temperature by being heated, and fixing a developer to the sheet by sandwiching the sheet between the fixing roller and the pressing roller; and induction heating coils including a center-section coil and an end-section coil, and arranged inside the fixing roller in an axial direction so as to leave a space between the center-section coil and the end-section coil, the space being adjusted so that the temperature of one surface of the fixing roller, the one surface opposing the space, is not higher than the temperatures of the other surface of the fixing roller, the other surface opposing central portions of the coils.

Abstract: An image fanning apparatus is provided with a pressing roller for pressing a sheet at the time of a fixing operation; a fixing roller having a hollow portion, facing the pressing roller, rising in temperature by being heated, and fixing a developer to the sheet by sandwiching the sheet between the fixing roller and the pressing roller; and induction heating coils including a center-section coil and an end-section coil, and arranged inside the fixing roller in an axial direction so as to leave a space between the center-section coil and the end-section coil, the space being adjusted so that the temperature of one surface of the fixing roller, the one surface opposing the space, is not higher than the temperatures of the other surface of the fixing roller, the other surface opposing central portions of the coils.

Abstract: An electrophotographic fixing device allowing a flow of an AC current through an electromagnetic induction coil arranged close to a heating roller having a metal layer formed of a conductor and allowing the heat generation of the heating roller to heat a to-be-fixed member, in which the fixing device comprises a circuit board for outputting the AC current from an output terminal and passing the current through the electromagnetic induction coil, a conductive plate metal having one end side fixed by a fastening screw to the output terminal of the circuit board, a male-side connection terminal provided on the other end of the plate metal, and a female-side connection terminal provided at an end of a leader line of the electromagnetic induction coil and detachably connected to a male-side connection terminal.

Abstract: An image forming apparatus is provided with a pressing roller for pressing a sheet at the time of a fixing operation; a fixing roller having a hollow portion, facing the pressing roller, rising in temperature by being heated, and fixing a developer to the sheet by sandwiching the sheet between the fixing roller and the pressing roller; and induction heating coils including a center-section coil and an end-section coil, and arranged inside the fixing roller in an axial direction so as to leave a space between the center-section coil and the end-section coil, the space being adjusted so that the temperature of one surface of the fixing roller, the one surface opposing the space, is not higher than the temperatures of the other surface of the fixing roller, the other surface opposing central portions of the coils.

Abstract: An image forming apparatus is provided with a pressing roller for pressing a sheet at the time of a fixing operation; a fixing roller having a hollow portion, facing the pressing roller, rising in temperature by being heated, and fixing a developer to the sheet by sandwiching the sheet between the fixing roller and the pressing roller; and induction heating coils including a center-section coil and an end-section coil, and arranged inside the fixing roller in an axial direction so as to leave a space between the center-section coil and the end-section coil, the space being adjusted so that the temperature of one surface of the fixing roller, the one surface opposing the space, is not higher than the temperatures of the other surface of the fixing roller, the other surface opposing central portions of the coils.

Abstract: An electrophotographic fixing device allowing a flow of an AC current through an electromagnetic induction coil arranged close to a heating roller having a metal layer formed of a conductor and allowing the heat generation of the heating roller to heat a to-be-fixed member, in which the fixing device comprises a circuit board for outputting the AC current from an output terminal and passing the current through the electromagnetic induction coil, a conductive plate metal having one end side fixed by a fastening screw to the output terminal of the circuit board, a male-side connection terminal provided on the other end of the plate metal, and a female-side connection terminal provided at an end of a leader line of the electromagnetic induction coil and detachably connected to a male-side connection terminal.

Abstract: The method of manufacturing a circuit board is capable of preventing deformation of a core substrate, ensuring size thereof and highly concentrating cable patterns so as to realize compact and high-performance semiconductor devices. The method of manufacturing a circuit board of the present invention comprises the steps of: forming a multilayered body, in which cable patterns on different layers insulated by an insulating layer are electrically connected, on a core substrate by a buildup process; and separating the multilayered body from the core substrate. A metal layer is vacuum-adhered on the core substrate.

Abstract: The present invention provides a fixing device and a digital photocopier which can shorten the time from an instruction of starting image formation to end of fixing. The fixing device is provided in a cylinder made of metal and having a small thickness, and includes a magnetic excitation coil. When the power source is turned on, all the electric power defined by subtracting an electric power amount consumed by components other than the fixing device is supplied to the magnetic excitation coil to perform heating. As the structural components of the photocopier and auxiliary devices added to the photocopier operate, the electric power defined by subtracting, from the maximum input electric power, the electric power consumed by the structural components of the photocopier and the auxiliary devices is supplied to perform heating. In this manner, the heat roller of the fixing device is heated, in a short time, to a temperature which enables fixing, so that the time required for first copying can be shortened.

Abstract: The present invention provides a multi-function peripheral system, a multi-function peripheral apparatus, an option image display unit, an image information processing method, and an image information processing program, which allow a reduction in the capacity required for an image information storage unit provided on the option image display unit side in a multi-function peripheral system that can be additionally equipped with an option panel according to need.

Abstract: The present invention provides a fixing device and a digital photocopier which can shorten the time from an instruction of starting image formation to end of fixing. The fixing device is provided in a cylinder made of metal and having a small thickness, and includes a magnetic excitation coil. When the power source is turned on, all the electric power defined by subtracting an electric power amount consumed by components other than the fixing device is supplied to the magnetic excitation coil to perform heating. As the structural components of the photocopier and auxiliary devices added to the photocopier operate, the electric power defined by subtracting, from the maximum input electric power, the electric power consumed by the structural components of the photocopier and the auxiliary devices is supplied to perform heating. In this manner, the heat roller of the fixing device is heated, in a short time, to a temperature which enables fixing, so that the time required for first copying can be shortened.

Abstract: The present invention provides a fixing device and a digital photocopier which can shorten the time from an instruction of starting image formation to end of fixing. The fixing device is provided in a cylinder made of metal and having a small thickness, and includes a magnetic excitation coil. When the power source is turned on, all the electric power defined by subtracting an electric power amount consumed by components other than the fixing device is supplied to the magnetic excitation coil to perform heating. As the structural components of the photocopier and auxiliary devices added to the photocopier operate, the electric power defined by subtracting, from the maximum input electric power, the electric power consumed by the structural components of the photocopier and the auxiliary devices is supplied to perform heating. In this manner, the heat roller of the fixing device is heated, in a short time, to a temperature which enables fixing, so that the time required for first copying can be shortened.

Abstract: A fixing device comprising an endless heating member which is adapted to be contacted with a fixable member to thereby enable an image on the fixable member to be thermally fixed, an electromagnetic inductive coil member disposed close to the endless heating member and inductively heating the endless heating member, and an AC power supply circuit supplying an AC current to the electromagnetic inductive coil member. The coil member is constructed such that in a state where the coil member is positioned in the fixing device, a ratio between an inductance L of the coil member and a load resistance R of the coil member meets a condition of L/R<50×10−6 (H/&OHgr;).

Abstract: The present invention provides a fixing device and a digital photocopier which can shorten the time from an instruction of starting image formation to end of fixing. The fixing device is provided in a cylinder made of metal and having a small thickness, and includes a magnetic excitation coil. When the power source is turned on, all the electric power defined by subtracting an electric power amount consumed by components other than the fixing device is supplied to the magnetic excitation coil to perform heating. As the structural components of the photocopier and auxiliary devices added to the photocopier operate, the electric power defined by subtracting, from the maximum input electric power, the electric power consumed by the structural components of the photocopier and the auxiliary devices is supplied to perform heating. In this manner, the heat roller of the fixing device is heated, in a short time, to a temperature which enables fixing, so that the time required for first copying can be shortened.

Abstract: The present invention relates to a method for manufacturing a printed circuit board, and the method comprises forming penetrating holes in predetermined positions of an insulating substrate, then forming resist films having a predetermined pattern on the front and the rear surfaces of the insulating substrate; plating the insulating substrate provided with the resist films so as to form conductive plating patterns on the front and the rear surfaces of the insulating substrate and conductive paths on the inside surfaces of the penetrating holes, the conductive plating patterns being connected to each other via the conductive paths; and subsequently removing the resist films.

Abstract: An image forming apparatus according to the present invention includes: a pressing roller for pressing a sheet at the time of a fixing operation; a fixing roller having a hollow portion, facing said pressing roller, rising in temperature by being heated, and fixing a developer to the sheet by sandwiching the sheet between said fixing roller and said pressing roller; and induction heating coils including a center-section coil and an end-section coil, and arranged inside said fixing roller in an axial direction so as to leave a space between the center-section coil and the end-section coil, the space being adjusted so that the temperature of one surface of said fixing roller, said one surface opposing the space, is not higher than the temperatures of the other surface of said fixing roller, said other surface opposing central portions of the coils.

Abstract: An electrophotographic fixing device allowing a flow of an AC current through an electromagnetic induction coil arranged close to a heating roller having a metal layer formed of a conductor and allowing the heat generation of the heating roller to heat a to-be-fixed member, in which the fixing device comprises a circuit board for outputting the AC current from an output terminal and passing the current through the electromagnetic induction coil, a conductive plate metal having one end side fixed by a fastening screw to the output terminal of the circuit board, a male-side connection terminal provided on the other end of the plate metal, and a female-side connection terminal provided at an end of a leader line of the electromagnetic induction coil and detachably connected to a male-side connection terminal.

Abstract: The present invention provides a fixing device and a digital photocopier which can shorten the time from an instruction of starting image formation to end of fixing. The fixing device is provided in a cylinder made of metal and having a small thickness, and includes a magnetic excitation coil. When the power source is turned on, all the electric power defined by subtracting an electric power amount consumed by components other than the fixing device is supplied to the magnetic excitation coil to perform heating. As the structural components of the photocopier and auxiliary devices added to the photocopier operate, the electric power defined by subtracting, from the maximum input electric power, the electric power consumed by the structural components of the photocopier and the auxiliary devices is supplied to perform heating. In this manner, the heat roller of the fixing device is heated, in a short time, to a temperature which enables fixing, so that the time required for first copying can be shortened.

Abstract: A fixing device comprising an endless heating member which is adapted to be contacted with a fixable member to thereby enable an image on the fixable member to be thermally fixed, an electromagnetic inductive coil member disposed close to the endless heating member and inductively heating the endless heating member, and an AC power supply circuit supplying an AC current to the electromagnetic inductive coil member. The coil member is constructed such that in a state where the coil member is positioned in the fixing device, a ratio between an inductance L of the coil member and a load resistance R of the coil member meets a condition of L/R<50×10−6 (H/&OHgr;).