Commercial performance, whether for cut sheet or continuous form printers, can be impaired by local conditions outside the printers themselves. Such problems may lie in the paper you are using, its storage conditions, or the environment housing the printers.
If you suspect that your paper may be causing problems, send us a sample. Our experts analyse various characteristics, measure these characteristics against the spec required for the printer, look for anomalies, and can return a verdict often within 24 hours of receiving the paper sample.
When is this useful? The paper jams but all printer-related possibilities have been ruled out, toner doesn't adhere to the paper, or adherence is patchy.
The client was experiencing poor print quality and inadequate fusing. Their BMS was reporting a satisfactory humidity level but our independent temperature and humidity readings indicated that humidity was extremely high. Upon closer investigation, a failed BMS humidity sensor was discovered, and the humidifiers were delivering maximum moisture to the environment. Replacing the sensor resolved the problem.
A large overnight print run repeatedly failed, leading to complicated and expensive partial reruns. Our power monitoring showed that at high load the UPS developed a high frequency 'ringing' on neutral, before switching to bypass. A peak-to-peak voltage of between 17.5v and 19v was recorded. This is high enough to cause silicon circuitry to fail. A more detailed examination of the waveform showed it to comprise principally a 1.1 - 1.2 kHz component. When in bypass on utility power, the N-G voltage fell to a more reasonable < 12v peak-to-peak. The issue was identified as an overloaded UPS set. We recommended that the printing system be removed from the UPS, pending a power capacity upgrade.
The client was experiencing poor toner adhesion on customised promotional vouchers. They wanted to test toner adhesion properties on a variety of different paper stock. We analysed a number of printed paper samples and reported the adhesion characteristics of each. The client could then decide which paper best suited this print run.
A RITEL data centre audit found intermittent waveshape faults and variable rms voltage on one phase of the 3-phase supply. The cause was found to be a failing capacitor in the solid state UPS system. Unit was repaired before any loss of service occurred.
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