摘要:
Coding of items of mail is achieved to good effect irrespective of the moisture content of the mail and/or ambient relative humidity by applying to at least one part of the surface a composition comprising both phosphorescence activation means and fluorescence activation means such that exposure of the surface to ultraviolet light will lead to an emission of detectable phosphorescence to an extent which will depend upon the amount of moisture at the surface. Fluorescence will be activated irrespective of moisture content. Preferably red phosphorescence and red fluorescence are manifested.
摘要:
Communications terminal equipment comprises: an analog voice module (4), for connection to an analog private exchange (9); a high speed data communication module (6), for connection to high speed communications devices (12); and an interface (3) for common channel signalling connection to a digital network (8). The equipment may further comprise a module (5) for common channel signalling connectivity to a digital private exchange. Use of the equipment allows interconnection of a wide variety of devices to a digital network.
摘要:
An article chute comprises a helical floor (1) having a peripheral side wall (3), an outer part of the floor being cambered at an angle which is so related to the pitch and radius of the chute that articles descend the chute under conditions in which their velocity does not exceed a given maximum. The floor of the chute is inclined at substantially the same camber angle over substantially the whole extent of the floor.
摘要:
Apparatus for giving an indication of the time of flight of the ink stream of an ink jet printer comprises detector means (16) towards which one or more selected droplets of the ink stream may be directed by a deflection system comprising charging electrode (5) and deflecting electrodes (8). The detector means detects the presence of the selected droplets to give an indication of the time of flight of the said droplets. The time of flight may be calculated and displayed, or employed to control printing paramaters such as ink supply pressure, deflecting charge or the rate at which items to be printed are conveyed past the printer. The time of flight also acts as a useful "state of health" monitor, to detect blockages or other malfunctions of the printer.
摘要:
A conveyor sorting system comprises: a main conveyor (5); a plurality of feed conveyors (7) each of which has a loading station (19, 20) at which an article can be loaded on to the feed conveyor for being fed by the latter to the main conveyor; control means for controlling the main and feed conveyors, for receiving data fed to it relating to articles loaded on the feed conveyors; respective detecting means (21) at each of the feed conveyors, for detecting articles on the respective feed conveyors and supplying information to the control means in response to such detection, the control means controlling the feed conveyors in response to such information so that articles on the feed conveyors are fed to the main conveyor with a given spacing between successive articles and storing data related to the lengths of individual articles; and further detecting means (22) at the main conveyor, for detecting articles on the main conveyor and supplying information to the control means in response to such detection, the control means checking, in response to such information, whether or not said given spacing has been maintained and whether or not, from the detected length of each article on the main conveyor and using said data related to the lengths of individual articles, whether each article has arrived at the further detecting means at the expected time.
摘要:
A data transmission of the videotex type in which coded information can be transmitted from a central information store 10 to a plurality of terminals 14. The coded information includes groups of bits representing characters and groups of bits representing control codes. In the transmission technique used in the system a character attribute can be represented by a display control code which is transmitted in association with a cursor backspace code. By using this technique characters of different attributes can be displayed without a space being required between the characters on the display.