摘要:
A machine for digital printing of glass sheets on their entire surface, including their border, comprising a printing table (1), a printing carriage (2) that travels along the printing table (1) on a number of travel guides (3), and a printing bridge (4) associated with the printing carriage (2) on which printing modules or heads (5) travel, characterized in that it has a head controller (6) that manages up to four encoders, which allows four simultaneous printing modes: - Modality 1 along the X axis in single pass. - Modality 2 along the Y axis in single pass. - Modality 3 along the X axis in multipass. - Modality 4 along the Y axis in multipass.
摘要:
A modular peripheral error warning device (10) for use with printers having a Centronics parallel port (20). The peripheral error warning device monitors various voltages of connecting wires (18) that interface with the computer and the printer (22) and includes an interface box (12), an alarm box (14), and a power supply (16). Activation of an alarm, such as a buzzer (36) or LED (34), will occur if the monitored voltage corresponds to printer error, such as a paper jam. Correction of the printer error results in deactivation of the alarm.
摘要:
A printer with a reciprocally moving hammerbank with a plurality of hammers thereon is disclosed including a magnet for retaining hammers on the hammerbank of the printer from a firing position. A coil overcomes the magnetism of the magnet by a circuit for reversing the magnetic field. At least a portion of the circuit comprises transistor drivers located directly on the hammerbank of the printer.
摘要:
A driver circuit for driving a piezoelectric element (P), including a charging circuit having a DC power source (E) and a coil (L) for charging the piezoelectric element, and a discharging circuit for discharging the piezoelectric element. When the piezoelectric element is charged, a first switching device (TR1) in the charging circuit is held on until a voltage of the element reaches a predetermined level below a line voltage of the power source. A second switching device (TR2) provided in the discharging circuit is turned on at the time when the first switching device is turned off or at a predetermined later time, and is turned off by the time when said first switching device is again turned on next activation of the piezoelectric element. A voltage limiter (D1, D2) inhibits the voltage of the piezoelectric element element from exceeding the predetermined level. The driver circuit may be used for a dot-matrix printer, which may be adapted to discharge the piezoelectric element for a comparatively long time where a distance between adjacent two dots to be formed is larger than a predetermined value.
摘要:
A digital printhead energy control system includes a first storage device (20) for receiving hammer pulse duration data, a second storage device (22) for receiving hammer pulse energization data and for producing a trigger signal and hammer pulse energization signals, a counter (48, 50) for counting to a value equal to the value stored in the first storage device (20), a comparator (40, 42) for comparing the value stored in the first storage device (20) with the incrementing counter value, latch means (58) for latching the output of the comparator (40, 42) to produce an end pulse signal, first gating means (30) for combining the end pulse signal and a reset signal for controlling the clearing of the second storage device (22) and terminating the hammer pulse energization signals, and second gating means (38) for combining the trigger signal and a reset signal for controlling the clearing of the counter (48, 50).
摘要:
Disclosed is a printer in which the driving time of its printer head (10) is determined based on a printer head driving mode selected as a result of control commands interpreted by a control command interpreter (45) and the actual driving voltage Vp used for driving the printer head, and printing is performed according to the determined driving time. The purpose is to set the driving time of the printer head (10) to a time suited to both the used type of recording paper and the actual head driving voltage.