Abstract: An apparatus for monitoring whether a predetermined treatment has been effected at a predetermined working station on each of objects which are successively moved relative to the working station along a predetermined path includes an object detector for generating a first signal when each of the objects moved along the path passes a predetermined position of the working station; a timer for generating a second signal for instructing the working station to start execution of the predetermined treatment when a predetermined condition relating to execution of the predetermined treatment has been established after a lapse of a first predetermined time interval from generation of the first signal; and another timer for generating a third signal indicating failure of normal execution of the predetermined treatment when the second signal is not generated before a lapse of a second predetermined time interval from generation of the first signal, the second predetermined time interval being longer than the first prede

Abstract: A printer control apparatus and method are disclosed. A printer control apparatus includes storage for storing a plurality of printing information sets, each printing information set including printing data and printing data update information indicating update characteristics of the printing data, an input device for inputting a printing information set to the printing information set storage, an update reference signal generator for supplying an update reference signal to a printing data update device, a printing data update device for updating the printing data in accordance with update information, a selector for selecting one out of the printing information sets, and a printing information generator for reading out printing data of the selected printing information set and supplying the printing data thus read out to a printer proper to execute printing.

Abstract: An ink jet recording apparatus of a dot matrix type in which the amounts of charges given to ink droplets are controlled depending upon recording conditions. The apparatus comprises, in one embodiment, a central processing unit (CPU) capable of generating unit video data and dot data concerning an image to be recorded, a random access memory (RAM) for storing the unit video data, a selector for reading out predetermined number of unit video data among those stored in the RAM, an AND gate receiving the dot data and the selected unit video data and a digital/analog converter for generating from the output of the AND gate an image signal for giving charges to the ink droplets for controlled deflection of them.