| Patent application number | Description | Published |
|---|
| 20090046117 | Systems and Methods for Controlling Ink Jet Pens - A control circuit is provided for controlling ink jet pens having different numbers of internal select lines using external select lines that extend between the control circuit and the ink jet pens and that are shared by the ink jet pens. In one embodiment, the control circuit includes a register that store values, the values indicating whether a pulse is or is not to be sent as to each of the external select lines, a first control module configured to control select pulses sent on a first external select line after consultation of the register, and a second control module configured to control select pulses sent on a second external select line after consultation of the register. | 02-19-2009 |
| 20090058896 | FLUID EJECTION DEVICE - Embodiments of a fluid ejection device are disclosed. | 03-05-2009 |
| 20090109253 | Controlling Fire Signals - Embodiments for controlling fire signals are disclosed. | 04-30-2009 |
| 20090244132 | Fluid Ejection Device - A fluid ejection device includes groups of firing cells, sharing a common fire signal and a common address selection mechanism, each firing cell having a drop generator for ejecting fluid and a dynamic memory addressable by the common address selection mechanism. Circuitry interfaces with the firing cells to allow the capture of data during two consecutive select cycles, then firing of all cells during a third cycle. | 10-01-2009 |
| 20090295848 | Filling, identifying, validating, and servicing tip for fluid-ejection device - A tip to be placed on a fluid-ejection device is filled with fluid. The fluid may be introduced into a substantially hollow body of the tip at a first end of the body. The body of the tip has a second end at which a fluid-ejection mechanism is disposed to eject the fluid as controlled by the fluid-ejection device. The fluid may be introduced into the substantially hollow body of the tip through of the fluid-ejection mechanism disposed at the second end of the body of the tip. The tip may further be identified and/or serviced, and the tip and/or the fluid-ejection device may further be validated. | 12-03-2009 |
| 20090315931 | FLUID EJECTION DEVICE WITH DATA SIGNAL LATCH CIRCUITRY - A fluid ejection device includes a plurality of firing cells and a fire line adapted to conduct an energy signal including energy pulses. Each firing cell in the plurality of firing cells includes a firing resistor, a drive switch, a first data switch, and a second data switch. The drive switch is configured to enable the firing resistor to respond to the energy signal. The first data switch is configured to receive data signals that represent an image and to latch the data signals to provide latched data signals. The second data switch is configured to receive the latched data signals and control the drive switch to enable the firing resistor to respond to the energy signal and heat fluid to be ejected based on the latched data signals. | 12-24-2009 |
| 20100076727 | FLUID EJECTION DEVICE AND METHOD - A fluid ejection device includes one or more digital data storage arrays having plural EPROM cells. A method for affirming performance adequacy of EPROM cells in the one or more arrays includes the steps of identifying a reference cell in each array, measuring a selected performance criterion for the reference cells, obtaining a reference criterion value, and evaluating the actual performance of at least one cell in each array with respect to the reference criterion value. | 03-25-2010 |
| 20100302293 | INKJET PRINT HEAD WITH SHARED DATA LINES - An inkjet print head includes data signal lines configured to supply inkjet control voltages and non-volatile memory cell random access addresses. The inkjet print head includes an inkjet nozzle array wherein each nozzle in the array is configured to communicate with a data signal line. Also a non-volatile attribute memory cell array is included in the inkjet print head wherein each memory cell in the array is accessed through a data signal line shared with the nozzle array. | 12-02-2010 |
| 20100328405 | Secure Access To Fluid Cartridge Memory - An integrated fluid cartridge ( | 12-30-2010 |
