摘要:
According to aspects of the embodiments, there is provided methods of replenishing at least one consumable in a printer system having at least one channel with a lockout device and an indicator. The embodiments incorporate a solenoid latch on the channel, a channel closed switch and an attention light. When a consumable needs to be replaced, the user scans the new consumable label against a CRUM reader. If it is valid consumable for the printing system, the attention light above the low or empty channel is lit and its solenoid latch is released. The attention light and solenoid latch would be wired in parallel so that whenever the solenoid is energized to allow the channel to be opened, the attention light will illuminate.
摘要:
Systems and methods are provided for using a sensor to determine a charge-to-mass ratio, and a concentration, of a mixture including a first component and a second component. A base resonance frequency of the sensor in an unloaded state is measured. A surface of a vibrating element of the sensor is loaded with the mixture. A first resonance frequency, of the loaded sensor is measured and a mass of the mixture is calculated. A first component is attracted to, and a second component is removed from, the vibrating element of the sensor. A second resonance frequency, and a first charge, of the sensor are measured. The first component is removed and a second charge is measured. A mass and charge of the first component are calculated. Charge to mass ratio, and the concentration, of the first component are then derived from the calculated values.