Description: The current level if this supply is a container; the remaining space if this supply is a receptacle. If this supply container/receptacle can reliably sense this value, the value is reported by the printer and is read-only; otherwise, the value may be written (by a Remote Control Panel or a Management Application). The value (-1) means other and specifically indicates that the sub-unit places no restrictions on this parameter. The value (-2) means unknown. A value of (-3) means that the printer knows that there is some supply/remaining space, respectively. Refer to Standard Printer MIB for more details. Additional information: LaserJet 4050 Series will have a new toner-measuring feature that utilizes the GRIN ASIC's ability to detect the amount of pixels that have been placed on a single page. This Pixel-Counting Gas Gauge should be able to calculate toner levels within 10%. Because textual printing and graphics printing utilize different pixel usage, accuracy for the counting algorithms have been biased toward textual printing. Heavy graphics printing will cause the cartridge to appear to be emptier than it really is. Over time however, statistical averaging values that are kept in NVRAM will help make the gauge more accurate according to individual customer usage models. The new values will vary between 0 and 4600 depending on how much toner has been calculated to have been used.