Abstract: A recording apparatus has a linear motor, a recording head driven by the linear motor, and a detector for detecting the length of data to be recorded by the recording head. The running direction of the recording head is changed in response to the output of the detector.

Abstract: A printing device of a construction, wherein a plurality of printing hammers are arranged in parallel facing toward a character wheel provided on its outer peripheral surface with a plurality of character types to be struck by the printing hammers through a printing paper, etc., interposed between the printing hammers and the character wheel, and an ink applying device is kept in contact with the character wheel to apply printing ink onto the type face of the characters, the ink applying device having on its surface discrete sections to apply a printing ink of a color to a particular character to be struck by a particular printing hammer out of a plurality of the printing hammers, and another printing ink of another color to the remainder of the characters to be struck by the remainder of the printing hammers.

Abstract: In a printing hammer driving system, there is provided a character-bearing member having a plurality of identical characters disposed in mutually offset relationship in each of lines. The characters in each of the lines differ from those in any other line. A group of hammers is disposed in opposed relationship with the character-bearing member for impacting the characters thereon. A group of driving circuits is connected to the group of hammers for driving respective ones of the hammers. A group of gates is connected to the inputs of the group of driving circuits for selecting the hammers. Each of the gates has at least two input terminals. Memory means are provided which each have the output thereof connected to one of the input terminals of each gate for storing print digit information. Selector means are provided which each are connected to the other input terminal of each gate for selecting one or more of the gates.