Abstract: A sheet metal model creation device (1) for creating a sheet metal model while displaying a three-view drawing includes: a three-view drawing reader (13) configured to read three-view drawing information and display the three-view drawing on a screen; a three-view drawing display controller (15); a three-dimensional face creator (17) configured to create a three-dimensional face associated with an element of the three-view drawing selected on the screen in response to an operation of a mouse; and a model display controller (19) configured to combine the three-dimensional face with the sheet metal model and display the model. Here, the operation of the mouse is movement of a mouse (7), and selection of the element of the three-view drawing on the screen is selection of an element within a region that is based on a position of a mouse pointer associated with the movement of the mouse (7).

Abstract: An apparatus of generating control signals for an electrophotographic copying machine which is provided with a disk fixed to a rotary shaft of a photosensitive drum and having through-holes formed therein, a light emitting device arranged to be opposed to a photosensitive device through the disk to form binary coded light signals and a decoder connected to the photosensitive device to decode the light signals therefrom. As the disk rotates together with the photosensitive drum, the photosensitive device sequentially senses a plurality of binary coded light signals to operate desired devices of the electrophotographic copying machine.

Abstract: A circuit for detecting trouble in a sliding contact mechanism comprising a fixed contact portion and a movable contact portion, said fixed portion being connected to an electric power source.A radio-frequency signal is generated when insufficient electrical connection is caused in the sliding contact mechanism by, for example, depositing dusts thereon, said signal being delivered to a suitable alarm device to indicate the troublesome state.

Abstract: In apparatus for stripping receptor paper away from the photosensitive drum of an electrophotographic machine after transfer printing, there are provided a stripping roller having a frictional band near its one end and urged against the photosensitive drum, and a stripping pawl having a pointed end adapted to engage the leading edge of the receptor paper for stripping the receptor paper and urging the same against the frictional band on the stripping roller.