公开(公告)号：CA1199223A

公开(公告)日：1986-01-14

申请号：CA428748

申请日：1983-05-24

Applicant: IBM

Inventor： HILPERT FRITZ W ,  KOHM ERICH ,  RUDOLPH VOLKER ,  WOHNSDORF MANFRED E

IPC: B41J2/425 ,  B41J2/00 ,  B41J2/28 ,  B41J3/00 ,  B41J25/308 ,  G01D15/22 ,  B41J3/18

Abstract: ARRANGEMENT FOR PRESSING DOWN A PRINT HEAD COMPRISING AT LEAST ONE PRINT ELECTRODE Arrangement for a print head having at least one print electrode and being movable relative to a record carrier transported over a support, and pressed down onto the record carrier by the effect of an actuator, where a first frame piece (4) carrying the print electrode (6) supported in a holder (5) is pivotably fixed, via a spring arrangement (2, 3) biasing the print head towards the record carrier, to a second frame piece (1) opposite the first frame piece (4), where furthermore an electromagnetic actuator (9, 10) between the two frame pieces is attached to the second frame piece (1) to which a resilient ferromagnetic armature (14) is also fixed and through its greater bias acting against the bias of the spring arrangement (2, 3) abuts against a non-ferromagnetic stop (15) provided at the first frame piece and facing the end of the armature, which thus lifts the print head against the force of the spring arrangement (2, 3), and where by the operation of the actuator (9, 10), the print electrode (6) places itself against the record carrier (7) under the force of the spring arrangement (2, 3).

公开(公告)号：CA1199219A

公开(公告)日：1986-01-14

申请号：CA422613

申请日：1983-03-01

Applicant: IBM

Inventor： GOLDRIAN GOTTFRIED ,  WOHNSDORF MANFRED E ,  RUDOLPH VOLKER

IPC: B41M5/20 ,  B41J2/425 ,  G01D15/08 ,  G06K15/14 ,  G01D15/18

Abstract: METHOD OF AND ARRANGEMENT FOR CONTROLLING A ROW OF PRINT ELECTRODES FOR RECORDING INFORMATION ON AN ELECTROSENSITIVE RECORD CARRIER The invention concerns a method of and an arrangement for controlling a row of print electrodes for recording information on an electrosensitive record carrier, preferably a record carrier covered with a metallic or metalliferous layer, by means of a print head movable relatively parallel to the surface of the record carrier and comprising a row of print electrodes controlled by print pulses, and a control circuit for the timely generation of print pulses from digital or analog signals, whereby each print current pulse consists of a first section of relatively high amplitude and relatively short duration and a second section of relatively low amplitude and relatively long duration in such a manner that the first section of each print current pulse is used as a print pulse and the second section as a self-extinguishing burn-out pulse.