Abstract: This invention relates to routing in a communication network. In particular, the invention concerns routing in telecommunication and cellular networks. The idea of the invention is to preprocess the network in order to accelerate the routing process. The preprocessing comprises finding the difficult network portions, and removing trivial network portions from the network topology. As a result of these phases the network is divided into small subnetworks. After the preprocessing predetermined endpoints of a single route are added into the subnetworks for finding the route through the network. After that, traffic in each subnetwork is routed separately. Traffic in the network parts between the subnetworks, or between the endpoints and the subnetworks, may need additional routing.

Abstract: There is disclosed a printing apparatus having control equipment for controlling the printing position. The control equipment is detachably mounted on the printing apparatus.

Abstract: A printer provided with a margin setting mechanism is disclosed which has a printing head for writing information on a recording medium, a pulse motor for scan-driving the head, a detector for detecting the position of the head to put out a detection signal, and a control for receiving a phase signal applied to the pulse motor and the detection signal and putting out a signal to reverse the moving direction of the head when receiving both of said phase signal and detection signal.

Abstract: A clutch for stopping lateral motion of a first element or device, such as a print head in a data printer, which moves along an elongated second member such as a rod or bar. The clutch includes a movable clutch member with an aperture through which the elongated bar passes. In a data printer, this bar may be the guide bar along which the print head moves laterally. The print head or other such first member is coupled to the clutch member to move it along the bar so long as the clutch member is aligned generally normal to the bar, in which condition the bar passes freely through the aperture in the clutch member. An actuator aligned with the clutch member along its lateral travel path is put into position at a point along such travel path where it is desired to stop the moving print head or other device, and operates to tilt the clutch member so that it cocks into engagement with the bar. This produces a binding action which prevents any further movement of either the clutch member or the primary device (e.g.