Logic circuitry
AssigneeHewlett-Packard Development Company, L.P.
InventorsJames Michael Gardner, Scott A. Linn, Stephen D. Panshin, Jefferson P. Ward, David Owen Roethig, David N. Olsen, Anthony D. Studer, Michael W. Cumbie, Sirena Chi Lu
Life of this patent
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Abstract
A sensor circuit for a replaceable print material container to be connected to a host print apparatus logic circuit comprising a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus, and an interface including contact pads to connect to a voltage and/or data source of the print apparatus logic circuit, the sensor circuit configured to output signals conditioned by the pneumatic stimulus or pressurization via the contact pads.
Claims29
A sensor circuit for a replaceable print material container to be connected to a host print apparatus logic circuit, the sensor circuit comprising:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus, wherein the first sensor is configured to, in an enabled state, generate a different voltage during the pneumatic stimulus as compared to a point in time when the effect of the pneumatic stimulus has substantially ceased;
- and
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads.
A sensor circuit for a replaceable print material container to be connected to a host print apparatus logic circuit, the sensor circuit comprising:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus;
- and
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads,
- wherein the sensor circuit is configured to, in an enabled state, generate a different voltage at a higher internal reservoir pressure as compared to gauge pressure in the reservoir of approximately zero or lower.
A sensor circuit for a replaceable print material container to be connected to a host print apparatus logic circuit, the sensor circuit comprising:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus;
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads;
- and
- a digital to analog or analog to digital converter, the sensor circuit configured to output digital count values and to decrease a digital output value in response to the pneumatic stimulus as compared to a point in time when the effect of the pneumatic stimulus or pressurization has substantially ceased.
A sensor circuit for a replaceable print material container to be connected to a host print apparatus logic circuit, the sensor circuit comprising:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus;
- and
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads,
- wherein the sensor circuit is configured to detect when at least one of a start-up prime, a supply change prime, or a printhead recovery squish prime is applied to the print material container.
A sensor circuit for a replaceable print material container to be connected to a host print apparatus logic circuit, the sensor circuit comprising:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus;
- and
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads,
- wherein the sensor circuit is configured to:
- identify a plurality of class parameters;
- and
- base the output signals on:
- (a) a signal of the first sensor upon receiving a first class parameter via the interface;
- and
- (b) at least one of a different sensor, different data, or a different algorithm upon receiving a second class parameter via the interface.
A sensor circuit for a replaceable print material container to be connected to a host print apparatus logic circuit, the sensor circuit comprising:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus;
- and
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads,
- wherein the sensor circuit is configured to:
- identify a plurality of sub-class parameters;
- upon receiving the first class parameter and subsequently the plurality of sub-class parameters, condition the output based on:
- one sensor cell signal for all sub-class parameters, or
- a signal of a respective one of a plurality of cells of the first sensor for each sub-class parameter;
- and
- upon receiving the first class parameter and the same sub-class parameter at subsequent points in time during a pneumatic stimulus cycle, output a different output signal at each corresponding point in time.
A sensor circuit for a replaceable print material container to be connected to a host print apparatus logic circuit, the sensor circuit comprising:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus;
- and
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads,
- wherein the sensor circuit is configured to, in response to receiving a first class parameter corresponding to the first sensor, output:
- at least one relatively low count value when the first sensor detects the effect of an external pneumatic stimulus or pressurization, and
- at least one relatively high count value when no effect of the external pneumatic stimulus or pressurization is detected wherein the relatively low count value is lower than the relatively high count value to be able to detect said effect.
A sensor circuit for a replaceable print material container to be connected to a host print apparatus logic circuit, the sensor circuit comprising:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus;
- and
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads,
- the sensor circuit configured to:
- receive a plurality of class parameters;
- and
- output, for respective ones of the plurality of received class parameters:
- count values in a count value range,
- a highest or lowest output count value of the range for a first subset of the calibration parameters, and
- in-range count values between, and having at least one count distance from, the highest and lowest output count value for a second subset of the calibration parameters, wherein the second subset of the calibration parameters include operational calibration parameters.
A sensor circuit for a replaceable print material container to be connected to a host print apparatus logic circuit, the sensor circuit comprising:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus;
- and
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads,
- the sensor circuit configured to, upon receiving:
- (a) a command including a time period via a first communications address, and
- (b) a third communications address via a second communications address,
- respond to commands directed to the third communications address until the end of a duration based on the time period.
A sensor circuit for a replaceable print material container to be connected to a host print apparatus logic circuit, the sensor circuit comprising:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus;
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads;
- and
- sensors of different classes, wherein the sensor circuit is configured to identify class parameters, select a sensor based on a respective last received class parameter, and condition the output signals based on the selected sensor.
A replaceable print apparatus component comprising:
- a sensor circuit including:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus;
- and
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads;
- a print material reservoir;
- an air input, the air input to connect to a print apparatus air output, wherein the pneumatic stimulus includes receiving pressurized air through the air input from the print apparatus air output;
- and
- a pressure structure connected to the air input to pressurize an internal print material volume of the reservoir when receiving pressurized air through the air interface, wherein the pressure structure is adapted to provide for a back pressure in an operational state and when no pressurized air is applied, wherein the first sensor is configured to respond to a change of pressure inside the reservoir of at least 7 kPa in less than 3 seconds.
A replaceable print apparatus component comprising:
- a sensor circuit including:
- a first sensor to detect a pneumatic stimulus or pressurization applied by a print apparatus;
- and
- an interface including contact pads to connect to a voltage source or data source of the print apparatus logic circuit, the sensor circuit configured to generate output signals conditioned by the pneumatic stimulus or pressurization via the contact pads;
- a print material reservoir;
- and
- an air input, the air input to connect to a print apparatus air output, wherein the pneumatic stimulus includes receiving pressurized air through the air input from the print apparatus air output,
- wherein the sensor circuit is configured to respond with a different count value in response to a read request when there is a normal operating gauge pressure inside the reservoir of between approximately −10 and approximately 0 kPa as compared to when the gauge pressure in the reservoir is higher than 7 kPA.
Dependencies are inferred from the claim text.