3.
    发明专利
    未知

    公开(公告)号:DE2850381A1

    公开(公告)日:1979-05-31

    申请号:DE2850381

    申请日:1978-11-21

    Applicant: IBM

    Abstract: APPARATUS FOR RECORDING INFORMATION ON A RECORDING SURFACE The start of each cycle of a pump, which supplies a pressurized ink stream through a nozzle for application to a recording surface on a rotary drum, is synchronized with each revolution of the drum. If more than one cycle of the pump occurs during each revolution of the drum, the number of the cycles in each drum revolution must be an integer with each cycle starting an equal angle of the revolution of the drum from the start of the prior cycle.

    4.
    发明专利
    未知

    公开(公告)号:DE2361297A1

    公开(公告)日:1974-06-12

    申请号:DE2361297

    申请日:1973-12-08

    Applicant: IBM

    Abstract: An ink jet printing apparatus is described having facilities for printing information in character locations, (boxes) each character location comprising a plurality of vertical columns of drop locations, and a number of characters comprising a line of information. Structures and circuits are included for insuring correct location of information within the character boxes and also providing for one mode in which characters are printed continuously line-by-line and another mode in which characters are printed incrementally character-by-character. During incremental printing, as well as the first character in a line or group of characters, provision is made for re-bounding the printhead back into the box of the character just printed, that is, prior to the next character box to be printed to insure that when the printhead starts up again for the next character that all drop components for that character, including any located in the immediate vicinity of the character boundary, are properly placed during printing.

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