Abstract: Isolated DNA encoding each of human calcium channel ?1-, ?2-, ?- and ?-subunits, including subunits that arise as splice variants of primary transcripts, is provided. Cells and vectors containing the DNA and methods for identifying compounds that modulate the activity of human calcium channels are also provided.

Abstract: Isolated DNA encoding each of human calcium channel ?1-, ?2-, ?- and ?-subunits, including subunits that arise as splice variants of primary transcripts, is provided. Cells and vectors containing the DNA and methods for identifying compounds that modulate the activity of human calcium channels are also provided.

Abstract: An apparatus for oxidizing volatile organic compounds from an electrographic printer may comprising a) a printer system that vents a gas stream containing volatile organic compounds to a first inlet; b) a first mast transfer element transmitting the gas stream to a catalytic treatment system, c) The catalytic treatment system comprising separate contact sections for an unsupported catalyst and a supported catalyst; a diverter system that can direct the gas stream along paths selected from the group consisting of to the unsupported catalyst only, to the supported catalyst only, first the unsupported catalyst and then the supported catalyst, and the supported catalyst and then the unsupported catalyst.

Abstract: A system is provided within an electrophotographic imaging environment that removes or decomposes airborne hydrocarbons (as vapor and/or droplets), at least some of which are provided from evaporation or airborne dispersal of hydrocarbon carrier from electrophotographic toners or inks during and imaging process. The system comprises a catalyst that assists in the oxidation or decomposition of hydrocarbons and a (catalyst and vapor phase) heating and oxygen-providing components comprising an chemical oxygen-generator. The chemical reaction that occurs in the oxygen generation provides both a) immediate and significant amounts of heat that heats both the catalyst and the gas phase containing the hydrocarbon and the oxygen and b) oxygen to assist in the decomposition and/or oxidation of the hydrocarbon and other airborne materials.

Abstract: A method of maintaining a surface charge on a photoreceptor within a predetermined voltage range is provided, comprising the steps of providing a charging device adjacent to a surface of the photoreceptor, determining a reference voltage to be applied by the charging device to the photoreceptor surface to establish a first photoreceptor surface voltage, and applying the reference voltage to the surface of the moving photoreceptor with the charging device while measuring a first photoreceptor current. The method further comprises comparing the first photoreceptor current to predetermined characteristics of the photoreceptor to calculate a first output value, comparing the first output value to predetermined characteristics of the photoreceptor and calculating a first correction voltage, and applying the first correction voltage to the photoreceptor surface with the charging device to obtain a surface voltage on the photoreceptor that is within the predetermined operational voltage range.

Abstract: A printer system using inks, toners or developers with solvents therein is provided with a detector for volatile organic compounds assists in reducing potential accidents in the printer. The detector may be able to identify at least a threshold level of volatile organic in a gas phase in the printer, or may be able to identify various levels or a continuous metered level of volatile organic compounds (VOC's). An automatic warning, automatic signal, or even automatic cutoff function may be associated with the detector. The detector may be inside the printer or associated with a vent or generally positioned on or near the printer. One mode of detection operation described in detail is identification of changes in dielectric constant in a vapor phase or vapor stream that can be associated with changed levels of VOC in that phase or stream.

Abstract: A printer cartridge for electrographic printing (dry or liquid) is provided with two chambers connected by a developer transportation system that traverses a development zone in a first direction. As the toner (developer) from a first of the two compartments is fed through the development zone, excess or unused toner is transported by the developer transportation system into a second of the two compartments. When the first compartment has exhausted its supply of toner, there will be sufficient toner captured in the second compartment to allow for printing capability to be maintained in the system, without any replenishment. The direction of flow of developer during printing is reversed from the second compartment to the first compartment, passing through the development zone.

Abstract: Latent charge images are provided on a photoconductor element having a photoconductive layer with a conductive stripe. This process is performed by charging the photoconductive layer with a charge having a particular vector to form a uniform charge on the photoconductive layer; and subsequently charging the conductive stripe with a charge having a vector that is opposite the vector of the charge on the photoconductive layer to lower the charge content in the photoconductive layer. The first charge may be provided by a first corona charging device and the subsequent charge may be applied by a second corona discharge device focused on a conductive stripe.

Abstract: A method measures the conductivity (?) of a liquid or paste electrophotographic toner by providing two parallel plane conductive plates with a uniform separation (d) between the plates to form a space between the plates; filling the space between the plates with liquid or paste electrophotographic toner; applying an alternating current voltage of at least 100V between the plates across the liquid or paste toner; measuring as data the current passing through an external component into the plates; adjusting the data to remove current contributions attributable to impurity ions; sending adjusted data to a processor; and determining the conductivity from the adjusted data.

Abstract: Isolated DNA encoding each of human calcium channel &agr;1-, &agr;2-, &bgr;- and &ggr;-subunits, including subunits that arise as splice variants of primary transcripts, is provided. Cells and vectors containing the DNA and methods for identifying compounds that modulate the activity of human calcium channels are also provided.

Abstract: Isolated DNA encoding each of human calcium channel &agr;1-, &agr;2-, &bgr;- and &ggr;-subunits, including subunits that arise as splice variants of primary transcripts, is provided. Cells and vectors containing the DNA and methods for identifying compounds that modulate the activity of human calcium channels are also provided.

Abstract: Calcium channel (alpha).sub.1 -subunit and (alpha).sub.2 -subunit-encoding DNA, and related compositions and methods, are provided.

Abstract: Human calcium channel .alpha..sub.1 -, .alpha..sub.2 -, .beta.- and .gamma.-subunit encoding cDNAs, and related compositions and methods, are provided.

Abstract: Isolated DNA encoding each of human calcium channel .alpha..sub.1 -, .alpha..sub.2 -, .beta.-and .gamma.-subunits, including subunits that arise as splice variants of primary transcripts, is provided. Cells and vectors containing the DNA and methods for identifying compounds that modulate the activity of human calcium channels are also provided.

Abstract: Isolated DNA encoding each of human calcium channel .alpha..sub.1 -, .alpha..sub.2 -, .beta.- and .gamma.-subunits, including subunits that arise as splice variants of primary transcripts, is provided. Cells and vectors containing the DNA and methods for identifying compounds that modulate the activity of human calcium channels are also provided.

Abstract: Isolated DNA encoding each of human calcium channel .alpha..sub.1 -, .alpha..sub.2 -, .beta.- and .gamma.-subunits, including subunits that arise as splice variants of primary transcripts, is provided. Cells and vectors containing the DNA and methods for identifying compounds that modulate the activity of human calcium channels are also provided.

Abstract: Isolated DNA encoding each of human calcium channel .alpha..sub.1 -, .alpha..sub.2 -, .beta.- and .gamma.-subunits, including subunits that arise as splice variants of primary transcripts, is provided. Cells and vectors containing the DNA and methods for identifying compounds that modulate the activity of human calcium channels are also provided.

Abstract: .alpha..sub.1 - and .alpha..sub.2 - protein subunits of voltage-dependent calcium channels are provided.

Abstract: Calcium channel (alpha).sub.1 -subunit and (alpha).sub.2 -subunit-encoding DNA, and related compositions and methods, are provided.

Abstract: [DNAs] DNA molecules encoding mammalian calcium channel a.sub.1 and a.sub.2 subunits are provided. The [DNAs] DNA molecules are used to transform host cells which may also contain a reporter gene, the transcription of which is responsive to an ion or molecule capable of entering the cell through a calcium channel.