Abstract: A sheet processing apparatus for processing a sheet bundle includes a stitching unit having a head portion for driving staples into the sheet bundle and an anvil portion for receiving and bending the staples driven by the head portion, a feeding device for feeding the sheet bundle to a stitching position between the head portion and the anvil portion, a transport device for transporting the stitching unit to a position perpendicular to a sheet bundle feeding direction, a guide member for guiding the sheet bundle to the stitching position, and a supplement guide member. The supplement guide member retracts to a position that does not hinder the movement of the stitching unit when the stitching unit moves, and guides the sheet bundle to the guide member without a leading edge of the sheet bundle touching the upstream edge of the guide member.

Abstract: In a conventional data transmission and receipt apparatus using PN flags according to PN sequence, there has occurred a flag emulation due to a bit stream similar to a PN flag in a frame of the data stream, which disables transmission of the frame therebetween. To solve the problem, the data transmission and receipt apparatus of the present invention inserts a mark representing that there is laid a bit stream similar to the PN flag into the frame while the data receipt apparatus distinguishes such a bit stream from the PN flag. Thereby, the data receipt apparatus is capable of receiving the frame involving the bit stream similar to the PN flag without occurrence of a flag emulation.

Abstract: An electromagnetic relay in which terminal pieces carrying fixed contact pieces can be assembled in the case for the electromagnetic relay from above. The case consists of a main case accommodating an electromagnet unit, a terminal case accommodating a contact unit and mounted on the main case, and a cover which is mounted on the terminal case. Each of the terminal pieces is fitted into a mounting position in a certain direction to be made immobile in any other direction perpendicular thereto. The cover is provided with a plurality of projections each of which engages with one of the terminal pieces to prevent it from moving in the said certain direction. Thus, the terminal pieces may be assembled from the upper end of the terminal case, and the work required for this assembly process may be significantly reduced.

Abstract: A hybrid relay comprising a mechanical relay provided with mechanical contact unit adapted to be actuated by an electromagnet, an electronic relay consisting of a semiconductor device, and a drive switch for supplying a drive current to the electromagnet, wherein the mechanical contact unit comprises: a first contact mechanism for controlling a load current of the hybrid relay; and a second contact mechanism for controlling a control current for a control gate of the semiconductor device; a contact point gap of the first contact mechanism being larger than that of the second contact mechanism. Thus, it is ensured that the first contact mechanism is engaged after the second contact mechanism and is disengaged before the second contact mechanism. Preferably, the mechanical contact unit further comprises a third contact mechanism, for controlling the leak current of the semiconductor device, which may be provided with a delay mechanism for delaying the returning action thereof.