FIELD: printing industry.
SUBSTANCE: ink level sensor comprises: a measuring capacitor which capacity varies with the change in the ink level in the chamber; a switch T2 for application to the measuring capacitor of voltage Vp, which charges the measuring capacitor; a switch T3 for the charge distribution between the measuring capacitor and the reference capacitor, resulting in a reference voltage Vg; and an evaluation transistor which configuration ensures the presence of resistance "source-drain" proportional to the reference voltage.
EFFECT: increase in accuracy.
17 cl, 10 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| DEVICE FOR EMISSION OF FLUID ENVIRONMENT WITH BUILT-IN INK LEVEL SENSOR | 2012 |
|
RU2635080C2 |
| FLUID MEDIUM LEVEL SENSOR AND RELATED METHODS | 2011 |
|
RU2572766C2 |
| PRINTHEADS WITH SENSOR PLATE IMPEDANCE MEASUREMENT | 2014 |
|
RU2654178C2 |
| FLUID EJECTION APPARATUSES INCLUDING A FIRST MEMORY AND A SECOND MEMORY | 2019 |
|
RU2779068C1 |
| PHOTOELECTRIC CONVERSION DEVICE AND IMAGE CAPTURING SYSTEM | 2015 |
|
RU2605153C2 |
| SUBSTRATE OF PRINT HEAD, PRINT HEAD AND PRINT DEVICE | 2010 |
|
RU2466026C2 |
| DEVICE FOR FLUID MEDIUM EJECTION | 2005 |
|
RU2337010C2 |
| ACCESS TO MEMORY BLOCKS IN MEMORY BANK | 2017 |
|
RU2748727C2 |
| PRINTING HEAD FOR THERMAL INKJET PRINTING, AS WELL AS PRINTING UNIT AND PRINTING DEVICE CONTAINING THEREOF | 2021 |
|
RU2826125C1 |
| OXYGEN INHIBITION FOR UNINTERRUPTED OPERATION OF PRINTHEADS | 2011 |
|
RU2541276C1 |
