Abstract: A wiring substrate includes a core layer, first and second wiring layers, and a first insulating layer. The core layer has one and another surfaces and includes a plate-shaped member formed of an aluminum oxide and multiple linear conductors penetrating the plate-shaped member in a thickness direction of the plate-shaped member. The first wiring layer is formed on the one surface of the core layer. The second wiring layer is formed on the other surface of the core layer. The first insulating layer has a same thickness as the first wiring layer and is formed in an area of the one surface of the core layer on which the first wiring layer is not formed. The first and second wiring layers are positioned superposing each other in a plan view. The first and second wiring layers are electrically connected by way of the multiple linear conductors.

Abstract: A wiring substrate includes a core layer, first and second wiring layers, and a first insulating layer. The core layer has one and another surfaces and includes a plate-shaped member formed of an aluminum oxide and multiple linear conductors penetrating the plate-shaped member in a thickness direction of the plate-shaped member. The first wiring layer is formed on the one surface of the core layer. The second wiring layer is formed on the other surface of the core layer. The first insulating layer has a same thickness as the first wiring layer and is formed in an area of the one surface of the core layer on which the first wiring layer is not formed. The first and second wiring layers are positioned superposing each other in a plan view. The first and second wiring layers are electrically connected by way of the multiple linear conductors.

Abstract: A toilet roll holder includes a frame and a cover rotatably mounted to the frame by a rotary shaft. The toilet roll holder further includes a support mounted within the cover and supporting a toilet roll thereon, an operating plate located below and adjacent to a rear edge of the support and rotatably mounted to the cover by a shaft, a brake plate rotatably mounted within the frame by a shaft extending parallel to the shaft, and converging holding frames arranged on opposite sides of the brake plate. The operating plate is inserted into the holding frames through their upper ends when the cover is moved to a closed position, and is normally fit loosely between the brake plate and the holding frames so as to permit the toilet paper to freely pass between the operating plate and the brake plate.

Abstract: A roll holder for holding and dispensing a roll of paper such as toilet paper. A paper roll is mounted so that its end will come out from behind. The paper can be easily pulled out downwardly. After a desired length has been pulled out, the paper is pulled forwardly. A working plate is pivoted under tension of the paper so that the paper will be pressed and braked between the working plate and a braking member of a resilient material. Simultaneously, a cutter coupled with the working plate will project out of the body so that the paper can be cut cleanly with a single hand.