Fluid cartridge and system for dispensing fluid
View Patent ↗A fluid cartridge has a bottle to retain a volume of fluid. An ejector chip resides in fluid communication with the bottle and causes ejection of fluid upon activation of fluid ejectors. Control logic coordinates ejector activation with dose control logic and temperature control circuitry. The dose control logic pre-specifies an amount of fluid to be ejected and prevents further ejection upon reaching the amount. Meanwhile, the temperature control circuit inhibits any ejection until a temperature of the fluid is within a predefined acceptable range. Bottle modularity, fluid dispense-areas and group-control of the ejectors facilitate certain designs.
1. A handheld fluid cartridge to hold a volume of fluid for dispensing and for docking with a control device, comprising:
a bottle to retain the volume of fluid;
an ejector chip on a board in fluid communication with the bottle to receive the volume of fluid and having pluralities of ejectors that cause ejection of the fluid upon actuation, wherein the bottle defines a fixed volume selected from a plurality of bottles modularly attachable to the ejector chip by way of a substrate attached to the board and having ribs for user manipulation; and
control logic in electrical communication with the ejector chip and programmed to cause said actuation of the ejectors, wherein the control logic includes
a memory that stores an energy pulse profile, a pre-specified amount of the volume of fluid to be ejected by the ejectors during use, and a desired temperature at which the pre-specified amount of the volume of fluid is to be ejected,
a fire signal generator in communication with the memory and programmed to supply electrical signals to the ejectors according to the energy pulse profile for ejecting the pre-specified amount of the volume of fluid from the ejector chip,
a dose control logic circuit in communication with the memory and that is programmed to prevents further ejection of the volume of fluid upon reaching said pre-specified amount, the dose control logic circuit including an output signal that confirms to the control device when docked that a proper dose of fluid has been ejected or not from the bottle, and
a temperature control circuit in communication with the memory that inhibits ejection of any of the volume of fluid until a temperature of the fluid to be ejected is within a predefined acceptable range of the desired temperature.
2. The fluid cartridge of claim 1 , wherein the fixed volume ranges from about 0.5 mL to about 5 mL.
3. The fluid cartridge of claim 1 , wherein the pre-specified amount of the volume of fluid is within a range of about 24 pL to about 402 uL.
4. The fluid cartridge of claim 1 , wherein the predefined acceptable range of the temperature of the fluid to be ejected is within three degrees Celsius of the desired temperature stored in the memory.
5. The fluid cartridge of claim 1 , wherein the control logic further includes address control logic that only addresses the ejectors in ejector groups (G) having a given number of individual ejectors (H).
6. The fluid cartridge of claim 5 , wherein G×H is 16×16.
7. The fluid cartridge of claim 1 , wherein a physical spacing of the ejectors on the ejector chip defines a maximum dispense area for the volume of fluid.
8. The fluid cartridge of claim 7 , wherein the ejectors (H) number two hundred fifty-six total ejectors (H 1 -H 256 ) and are arranged in four columns each having sixty-four ejectors such that the columns define the total ejectors (H 1 -H 256 ) in column 1 as (H 1 -H 64 ), column 2 as (H 65 -H 128 ), column 3 as (H 129 -H 192 ) and column 4 as (H 193 -H 256 ).
9. The fluid cartridge of claim 8 , wherein a first distance in a vertical direction of the ejector chip between ejectors H 1 and H 64 is about 4 mm and a second distance in a horizontal direction of the ejector chip between ejectors H 1 and H 193 is about 2 mm.
10. The fluid cartridge of claim 7 , wherein the maximum dispense area corresponds to a distance of sixteen adjacent said ejectors.
11. The fluid cartridge of claim 7 , wherein the maximum dispense area is about 8 mm.
12. The fluid cartridge of claim 1 , wherein the memory further stores a spatial pattern of the ejectors that delimits a dispense area on the ejection chip from which the pre-specified amount of the volume of fluid can be ejected during use.
13. The fluid cartridge of claim 1 , further including an address control logic in communication with the memory that generates address information for addressing one or more of the ejectors according to the spatial pattern of the ejectors.
14. A handheld fluid cartridge to hold a volume of fluid for dispensing and for docking with a control device, comprising:
a bottle to retain the volume of fluid;
a substrate connected to the bottle having ribs for user manipulation;
an ejector chip on a board in fluid communication with the bottle to receive the volume of fluid and having pluralities of ejectors that cause ejection of the fluid upon actuation, the ejector chip connecting to the substrate by way of the board; and
control logic in electrical communication with the ejector chip to cause said actuation of the ejectors, wherein the control logic includes
a memory in the form of polysilicon fuses that stores a spatial pattern of the ejectors as arranged on the ejector chip that delimits a dispense area on the ejection chip from which the pre-specified amount of the volume of fluid can be ejected during use, and
an address control logic in communication with the memory that is programmed to generates address information for addressing one or more of the ejectors according to the spatial pattern of the ejectors.
15. A handheld fluid cartridge system for dispensing a volume of fluid, comprising:
a control device having
a handheld housing,
a power source mounted with the housing, and a connector port having first electrical contacts; and a fluid cartridge for docking externally to the handheld housing of the control device for ease in separation of the control device from the fluid cartridge so other fluid cartridges can be docked externally thereto, the fluid cartridge having a board for releasably mating with the connector port of the control device, the board having second electrical contacts for contacting the first
electrical contacts during mating for receiving electrical power from the power source of the control device,
a bottle to retain the volume of fluid, a substrate connected to the bottle having ribs for user manipulation to allow the user to push or pull the bottle and substrate nearer or farther from the connector port, thereby connecting or not the electrical contacts of the board,
an ejector chip connected to the board residing in electrical communication with the second electrical contacts and fluid communication with the bottle to receive the volume of fluid, the ejector chip having pluralities of ejectors that cause ejection of the fluid upon actuation, wherein the bottle defines a fixed volume selected from a plurality of bottles modularly attachable
to the ejector chip by way of the substrate, and
control logic in electrical communication with the ejector chip and programmed to cause said actuation of the ejectors, wherein the control logic includes
a memory that stores an energy pulse profile, a pre-specified amount of the volume of fluid to be ejected by the ejectors during use, and a desired temperature at which the pre-specified amount of the volume of fluid is to be ejected,
a fire signal generator in communication with the memory and programmed to supply electrical signals to the ejectors according to the energy pulse profile for ejecting the pre-specified amount of the volume of fluid from the ejector chip,
a dose control logic circuit in communication with the memory and that is programmed to prevents further ejection of the volume of fluid upon reaching said pre-specified amount, the dose control logic circuit including an output signal that confirms to the control device when docked that a proper dose of fluid has been ejected or not from the bottle, and
a temperature control circuit in communication with the memory that inhibits ejection of any of the volume of fluid until a temperature of the fluid to be ejected is within a predefined acceptable range of the desired temperature.
16. The handheld fluid cartridge system of claim 15 , wherein the memory stores a spatial pattern of the ejectors as arranged on the ejector chip that delimits a dispense area on the ejection chip from which the pre-specified amount of the volume of fluid can be ejected during use.
17. The handheld fluid cartridge system of claim 16 , wherein the control logic further include an address control logic in communication with the memory that generates address information for addressing one or more of the ejectors according to the spatial pattern of the ejectors.
18. The handheld fluid cartridge system of claim 16 , wherein the board is a printed circuit board and the connector port is an edge card connector.