494results about "Corona discharge" patented technology

The application relates to the technical field of image forming, in particular to a conductive component, a process cartridge and an image forming device. The conductive component is arranged on the process cartridge or the image forming device. The process cartridge is detachably mounted into the body of the image forming device. The mounting direction of the process cartridge is a first direction. The conductive component comprises: a plurality of conductive pieces, the conductive pieces are used for realizing the electrical connection between the power supply piece of the image forming device and the load piece of the process cartridge, and at least one load piece comprises a roller piece; the conductive piece comprises an electric contact point, the electric contact point is used for contacting the power supply piece to access the power supply; wherein at least two of the plurality of electric contact points are arranged at intervals along a second direction; the second direction intersects with a third direction and the first direction; and the third direction is parallel to the axial direction of the roller piece. In conclusion, the technical scheme provided by the application can reduce the number of electric contact point scratches and improve the power supply stability.

The invention provides a spark discharge device and a spark discharge accurate control method, and relates to the technical field of spark discharge. The device comprises a pair of spark electrodes, a rotary switch, a capacitor and a power supply, wherein a gap exists between working ends of the spark electrodes; the spark electrode, the rotary switch and the capacitor are connected in series to form a discharging loop, and the capacitor and the power supply are connected in series to form a charging loop; the rotary switch comprises a rotatable rotor and a toothed bar connected with the rotor; a contact is arranged in the discharge loop, and when the contact is in contact with the toothed bar, the discharge loop is conducted. According to the invention, the discharge loop is rapidly switched on and switched off through the rotary switch, various parameters of spark discharge can be accurately and stably controlled, so that the spark discharge is not influenced by the environment, such as spark breakdown voltage, discharge frequency and the like, and the spark discharge can be prevented from being converted into corona, glow or arc discharge, for example, the spark discharge can be normally generated under low air pressure.

To provide a charging roll for electro-photographic apparatuses, the roll having an excellent charging property even if the discharge amount is decreased.SOLUTION: A charging roll 10 for electro-photographic apparatuses includes a shaft body 12, an elastic body layer 14 formed on the outer peripheral surface of the shaft body 12, and a surface layer 16 formed on the outer peripheral surface of the elastic body layer 14. The elastic body layer 14 contains non-polar rubber, polar rubber, and carbon black, a dielectric constant thereof is 7 to 29, and a resistance value thereof is 6.0×104 Ω to 5.0×106 Ω, and the surface layer 16 contains fluororesin and (meth) acrylic resin, a dielectric constant thereof is 10 to 22, and a resistance value thereof is 1.2×104 Ω to 8.8×105 Ω.SELECTED DRAWING: Figure 1

The present application relates to the technical field of gas laser, in particular to a kind of adjustable corona drive creeping spark preionization structure for gas laser.It includes main discharge part and preionization part;Main discharge part and preionization part share high voltage source and thyratron switch;Preionization part includes surface discharge unit by electrically conductive metal ring, ceramic tube and ground electrode, and adjustable capacitor Cs1 in series in preionization discharge branch;Preionization discharge branch is parallel with main discharge loop and energy storage is independent of each other.In the present application, by constructing independent preionization discharge branch, introducing adjustable capacitor as core control element and realizing electrification continuous regulation, effectively solve the problems such as low regulation accuracy, poor dynamic response and limited system integration reliability caused by relying on mechanical spacing adjustment in traditional structure.

The invention relates to a device for ionization of a fluid, wherein the device (102, 202, 302, 402, 502, 602, 702) comprises an elongated container (4, 104) adapted for conveying the fluid in a gaseous state, a fluid ionizing arrangement (18, 28) for ionizing the fluid, at least one fluid flow directing unit (106, 206) arranged in the container, wherein the at least fluid flow directing unit comprises at least one peripheral fluid flow guide channel (108, 118, 120) having an outlet (110) circumferentially displaced relative to an inlet (108) for turning a first part of an incoming fluid flow, and a central fluid flow guide channel (114) with an extension substantially in parallel with the longitudinal direction of the elongated container for guiding a second part of the incoming fluid flow substantially in the longitudinal direction of the elongated container.

The present invention relates to a method for ionizing a fluid, in which a first pair (18) of electrodes (20, 22) are arranged opposite each other and at a distance from each other within a container (4), and the method includes the steps of conveying a gaseous fluid within the container through the first pair of electrodes in a fluid flow, charging the electrodes (20, 22) at the first pair of electrodes so that a discharge occurs, and supplying the fluid flow to the inlet of the container in pulses.

To provide an air cooling clothing blower which improves usability.SOLUTION: An air cooling clothing blower 4 comprises a fan case 8 in which an air inflow port is provided at one end opening side (outside a clothing body) of a cylindrical wind tunnel 5, and an air discharge port 7 is provided at the other end opening side (inside the clothing body) of the wind tunnel 5, a fan disposed inside this fan case 8, a motor that rotatably drives this fan, an attachment flange 11 disposed to extend toward this wind tunnel 5 in its outer peripheral direction at the wind tunnel 5 outer periphery portion of the fan case 8, and an attachment ring 12 which is detachably mounted at the air discharge port 7 side of the attachment flange 11 at the wind tunnel 5 outer periphery part of the fan case 8 and uses the attachment flange 11 to sandwich the air cooling clothing from its front and back surfaces, and an ion generating device is provided at the attachment ring 12.SELECTED DRAWING: Figure 3

The image forming system includes: an image holding body that rotates; a charging unit that rotates while being in contact with the image holding body and charges the surface of the image holding body by applying a charging bias voltage; a pressing member that presses the charging portion against the image holding body so as to create a bite width; a developing unit that develops a latent image formed on the surface of the image holding body with a toner; and at least one processor that performs a process in which an absolute value of a surface potential of the image holding body charged by the charging portion is lower than an absolute value of a developing potential of the developing portion; the absolute value of the potential of the charging part is raised in a rectangular wave manner only during a set time during which the charging part instantly discharges before and after the nip width of the image holding body and does not discharge at the center of the nip width, and the absolute value of the potential of the charging part is raised in a rectangular wave manner only during a set time during which the charging part does not discharge at the center of the nip width. The absolute value of the surface potential of the image holding body is higher than the absolute value of the developing potential.

The application relates to the technical field of building lightning protection, in particular to a lightning protection device for fabricated buildings, which comprises a fabricated building, a support assembly is installed at the top of the fabricated building, a lightning attracting device is installed at the top of the support assembly, a lightning guiding assembly is installed on one side of the lightning attracting device, and the lightning guiding assembly is installed on the outer side of the fabricated building. In the application, the support assembly, the lightning attracting device, the insulating block, the lightning protection grounding needle, the mounting assembly, the mounting plate, the threaded head, the reinforcing assembly, the lightning guiding assembly, the connector, the lightning protection grounding belt and the fixer are arranged, when the lightning protection grounding needle is in the lightning stroke, the lightning protection grounding needle can transfer the lightning to the ground through the connector, the wire, the lightning protection grounding belt and the grounding device. Due to the design of the insulating block and the fixer, no hole needs to be punched when the lightning protection device is installed, therefore, the connection part of the lightning protection device and the fabricated building is not conductive, the lightning cannot affect the fabricated building, and the safety of the fabricated building is improved.

To stabilize the distribution of electric charges in residual toner at a normal polarity.SOLUTION: An image forming apparatus comprises an image carrier, a developing member, a pre-transfer member, and a brush member that is in contact with a surface of the image carrier at a contact part downstream of a transfer part and upstream of a developing part in the direction of rotation of the image carrier, and the image forming apparatus recovers a toner not transferred to a transfer target body by using the developing member. In an electrification system, the toner is located on the same side as a normal electrification polarity of the toner with respect to the brush member. The maximum value of contact pressure at the contact part is 0.7 gf / mm2 or more and 3.5 gf / mm2 or less. The maximum contact area ratio at the contact part is 18% or more and 74% or less. The Clark-Evans index of the brush member at the contact part is 1 or more.SELECTED DRAWING: Figure 2

To provide a cleaning body that prevents dirt from adhering to the surface of the object to be cleaned, and that maintains its ability to adhere to the object to be cleaned for a long period of time. [Solution] The cleaning body 100 has a core body 102, a foamed elastic layer 104, and an adhesive layer 106, wherein the 25% compressive load of the foamed elastic layer 104 in the high-action region is 1 / 2 or less of the 25% compressive load of the foamed elastic layer 104 in the low-action region.

The utility model discloses a protective device for automatic monitoring equipment in a station area, which relates to the technical field of monitoring equipment protection and comprises a stand column fixedly arranged on the ground, the stand column is located on one side of the monitoring equipment, and a support horizontal rod is fixedly arranged on one side, close to the monitoring equipment, of the stand column. A mounting rod is fixedly arranged at the end, away from the stand column, of the support horizontal rod, a protective cover is fixedly mounted at the bottom end of the mounting rod through a flange and a connecting bolt, and the protective cover is located above the monitoring device. The whole protection device is not in contact with the monitoring equipment, normal work of the monitoring equipment is not interfered while the protection function of the protection device is played, 360-degree dead-corner-free data acquisition of the monitoring equipment is achieved, the protection cover is located over the monitoring equipment, the monitoring equipment is protected in severe weather, and the equipment is prevented from being damaged.

The present application provides a housing. The housing includes a first housing chamber, a housing, and a discharge portion. The first housing chamber houses an object (OB). The housing is disposed outside the first housing chamber. The housing forms a flow path that communicates with an inflow portion and an outflow portion. The inflow portion allows air to flow in. The outflow portion allows air that has flowed in from the inflow portion to flow out. The discharge portion includes an electrode. The electrode is disposed in the flow path between the inflow portion and the outflow portion.

The invention discloses a corona discharge stability control method, device and equipment for aerosol concentration detection and a medium. A ring electrode comprising a first cavity and a second cavity which are coaxially and sequentially arranged is arranged, a corona pin is coaxially located in the first cavity, and a pin tip is located close to the second cavity; a control chip is adopted to convert a low-voltage direct-current power supply signal into a high voltage of 2kV + / -5% through PWM signal control, and the high voltage is applied between the corona pin and the ring electrode; and comprehensively performing compensation control on the discharge current of the corona pin to obtain a first compensation control quantity and performing compensation control on the environmental parameters to obtain a second compensation control quantity to obtain a total compensation control quantity, and adjusting the duty ratio of the PWM signal of the control chip through the total control quantity. According to the embodiment of the invention, the current stability is high, the environmental adaptability is good, the discharge voltage is low, and the service life of the corona pin is long.

An image forming apparatus is characterized by that a region of the surface of an image bearing member in which a second potential difference that generates an electrostatic force such that developer which is charged to an opposite polarity to the normal charging polarity of the developer moves from the image bearing member to a developer bearing member was generated in a second operation that moves the developer from the surface of the image bearing member to the developer bearing member includes a region where a first potential difference that generates an electrostatic force such that the developer which is charged to an opposite polarity to the normal charging polarity of the developer moves from the charging member to the image bearing member was generated in a first operation that moves the developer from the surface of the charging member to the surface of the image bearing member.

A clamping type lightning rod for a steel structure belongs to the technical field of lightning rods. The connecting base is arranged, the clamping screws are arranged on the connecting base, and the connecting base is in a U shape, so that the connecting base can be conveniently clamped on a steel column or a cross beam of a steel structure and is fixed through the clamping screws, fire operation is not needed, and rapid installation can be achieved; the lightning rod body is installed on the connecting base in a pressing mode through the pressing plate, so that a proper lightning rod structure can be selected for installation according to different actual installation positions.

The present application relates to the technical field of image forming, in particular to a processing cartridge, the maximum distance of the normal projection of the induction starting part and the induction terminal part on the electric induction component on the imaging area in the first direction is L1, the length of the imaging area in the first direction is L2, by setting L1 / L2>1 / 3, so that when the electric induction component is located on the processing cartridge and can induce the electric signal on the imaging area, the electric signal obtained by the electric induction component through the imaging area has a greater amplitude compared with the inherent signal of the circuit of the electric induction component itself, and the interference generated by the inherent signal of the circuit of the electric induction component itself can be reduced, so that the electric signal on the surface of the photosensitive drum can be more conveniently sensed and acquired, so as to judge whether the surface of the photosensitive drum is normal.

The utility model belongs to the technical field of seismological observation, and particularly discloses a connecting structure for seismological observation cave weak signal transmission lines, which comprises a sleeve shell and a shaping chamber, the shaping chamber is arranged between material guide grooves in the sleeve shell, three groups of wire inlets are arranged in the right side of the sleeve shell, and the right side of the sleeve shell is provided with three groups of wire outlets. An upper wire harness is transversely inserted into the top end of the interior of the sleeve shell, and a middle wire harness is transversely inserted into the center of the interior of the sleeve shell. According to the connecting structure for the earthquake observation cave weak signal transmission line, the metal ring is fixedly connected in the annular groove, the metal rod serves as a tool for sealing and balancing the metal ring to be welded, the inner side wall of the metal ring is clamped in the annular groove of the rubber sleeve, and the front end and the rear end of the bottom of the metal ring are fixed through the supporting rod and the foot pad. And when lightning stroke occurs, electric power can be conducted into soil by virtue of an electricity leading mechanism formed by the metal rod, the metal ring and the supporting rod, so that the problem of lack of lightning stroke protection is solved.

A lightning protection structure of an outdoor tower type meteorological monitoring station relates to the field of meteorological monitoring equipment and is used for improving the safety and stability of a down lead and prolonging the service life of the down lead. The outdoor tower type meteorological monitoring station lightning protection structure comprises a tower type support, a meteorological monitoring element, a lightning arrester, a downlead, a grounding device, a quartz sleeve and a shielding net. A vertical cavity is formed in the middle of the tower-shaped support and penetrates through the tower-shaped support. A plurality of meteorological monitoring elements are arranged, and the meteorological monitoring elements are distributed on the tower-shaped support. The lightning arrester is fixedly arranged on the top of the tower-shaped support and located on the upper side of the vertical cavity. The down lead is electrically connected with the lightning arrester, the down lead is vertically arranged on the tower-shaped support, and the two ends of the down lead penetrate through the vertical cavity; the grounding device is fixedly arranged underground, and the lightning arrester is electrically connected with the grounding device; the quartz sleeve is arranged in the vertical cavity and sleeves the outer side of the down lead; and the shielding net is made of a high-permeability material and is arranged outside the quartz sleeve.

To provide a technique that prevents electrification voltage from becoming excessive even when an image forming apparatus performs a determination as to whether cleaning of electrifying wires is executed.SOLUTION: When an ASIC 61 determines whether electrifying wires 42Y, 42M, 42C are cleaned after an abnormal discharge detection circuit 78 detects abnormal discharge during image formation, the ASIC performs constant voltage control of an electrification voltage generation circuit 70 to generate a predetermined electrification voltage value within a voltage range in which abnormal discharge does not occur in each of a plurality of electrifiers 41Y, 41M, 41C, and executes wire cleaning determination processing of determining whether the electrifying wires 42Y, 42M, 42C are cleaned based on grid currents Ig1 to Ig3 detected by a plurality of grid current detection circuits 82Y, 82M, 82C.SELECTED DRAWING: Figure 6

The utility model relates to the technical field of iron tower lightning protection, in particular to a lightning protection grounding structure for an iron tower, and solves the problems that in the prior art, an adjusting bolt needs to be disassembled and assembled repeatedly in the height adjusting process of a lightning arrester, so that inconvenience is brought to adjustment of workers, and the working efficiency of the workers is reduced. A lightning protection grounding structure for an iron tower comprises a supporting table, the top of the supporting table is fixedly connected with a supporting frame, the top of the supporting frame is fixedly connected with a control table, the interior of the control table is fixedly connected with a lightning arrester, and the interior of the control table is provided with a lifting assembly. The lifting assembly comprises a telescopic groove, a limiting sliding groove, a transmission disc, a handle, a lead screw, a telescopic rod, a limiting sliding strip and a first threaded groove. According to the utility model, through the arrangement of the lifting assembly, the screw rod drives the telescopic rod to ascend while rotating, so that the adjustment of the height of the lightning arrester is realized, the convenience and the practicability are effectively improved, and the adjustment operation of a worker is facilitated.

An image forming apparatus includes a photosensitive drum, a charging member, a developing member, a transfer member, first and second gears, a drive source, and a control unit. The charging member contacts the photosensitive drum and forms a charging portion to charge a surface of the photosensitive drum. The control unit performs control in such a manner that an image forming operation of performing image formation by rotating the photosensitive drum at a first rotational speed is executable. Where the control unit executes the image forming operation, the control unit performs a switch operation of stopping the photosensitive drum in a state in which the photosensitive drum is driven, while a non-image forming operation to be executed after the image forming operation is executed, and rotationally driving the photosensitive drum again at a second rotational speed faster than the first rotational speed, a plurality of times.

The utility model discloses a protection device for power tower, including tower body, lightning rod, connecting end and mounting plate, lightning rod is provided in the top of tower body and with the tower body movable connection, connecting end is provided in the rear side of lightning rod lower end and with the lightning rod fixed connection, mounting plate is provided in the mounting plate. And the mounting plate is fixedly connected to the lower end of the lightning rod. Through cooperative use of the tower body, the lightning rod, the connecting end, the mounting plate, the fixing device, the box body, the self-locking assembly, the linkage assembly, the control assembly, the positioning hole, the limiting rod and the limiting plate, the problem that the existing lightning rod is usually fixedly mounted on the tower body by adopting multiple bolts, so that the tower body cannot be damaged during mounting and subsequent maintenance and replacement is solved. And in addition, the problems that the time and the labor are wasted, and the disassembly and assembly working efficiency is influenced during maintenance and replacement are solved as the bolts need to be repeatedly screwed with the help of tools for disassembly and assembly.

The subject of this disclosure is to provide an electrophotographic photosensitive material and an electrophotographic image forming apparatus that provide sufficient image quality and durability even in positively charged image forming apparatuses. The electrophotographic photosensitive material is used in an image forming apparatus having positively charged units. The electrophotographic photosensitive material has a photosensitive layer and a protective layer. The protective layer is a cured film containing metal oxide particles and formed from a polymeric compound, and the volume resistivity of the protective layer is 10⁻⁶. ９ ~10 15 Within the range of Ω·cm, the above-mentioned polymeric compound is any one of acrylic monomers or methacrylic monomers or a mixture thereof, and the hydroxyl value of the above-mentioned polymeric compound is in the range of 10 to 200 mg KOH / g.

The utility model discloses a lightning protection device for electrical equipment, which belongs to the field of lightning protection of electrical equipment, and comprises a lightning protection assembly and an installation assembly, the lightning protection assembly comprises two installation plates, a plurality of dampers are detachably installed between the two installation plates, the side surfaces of the plurality of dampers are sleeved with damping springs, and the damping springs are connected with the installation assembly. Wherein a mounting hole is formed in the upper end of one mounting plate, a lightning protection seat is mounted in the mounting hole, a lightning rod is detachably mounted at the upper end of the lightning protection seat, a spring grounding wire is connected to the lower end of the lightning protection seat, and the mounting assembly comprises a fixing plate mounted on one side of the two mounting plates. According to the lightning protection device, the lightning protection assembly is matched with the installation assembly, so that the damping protection effect of the lightning protection device can be improved, the service life of the lightning protection device is prolonged, and meanwhile, the lightning protection device can be rapidly installed without punching through mutual matching of the structures; and the use convenience of the lightning protection device can be improved.

The invention is applicable to the technical field of electrical equipment, and provides a lightning protection device for electrical equipment, which comprises a lightning arrester fixed on a connecting seat, a lightning arrester fixed on the connecting seat, a lightning arrester fixed on the connecting seat, a lightning arrester fixed on the lightning arrester, a lightning arrester fixed on the lightning arrester and a lightning arrester fixed on the lightning arrester and a lightning arrester fixed on the lightning arrester, the assembly shell is fixedly mounted at the top of the mounting box and surrounds the ceramic seat; the bottom of the sleeve shell is fixedly connected with the top of the assembly shell through a screw, and the sleeve shell surrounds the spherical cavity; the temperature sensor is mounted on the inner side wall of the sleeve shell; and the air suction and supply mechanism is arranged in the mounting box and communicates with the bottom of the cavity. The beneficial effects of the scheme are that the air suction and supply mechanism can accelerate the heat dissipation speed of the lightning arrester, and alleviate the sudden temperature rise in a short time; and the flushing mechanism is matched with the air suction and supply mechanism through a temperature sensor, automatic control over cavity cooling and external flushing is achieved, manual intervention is not needed, and the using convenience and safety of the device are improved.

The utility model provides a multifunctional recyclable measurement control point protection device, which belongs to the technical field of engineering measurement control points or monitoring references and comprises a foundation connecting layer, a standard connecting layer, a control measurement layer, a rainproof energy storage ceiling and an anti-collision early warning system which are detachably connected. A protective ladder stand is arranged on the side face of the standard connecting layer and the side face of the basic connecting layer, a measuring instrument is erected in the control measuring layer, the anti-collision early warning system comprises a radar anti-collision system and a security monitoring system, and the basic connecting layer, the standard connecting layer, the control measuring layer and the rainproof energy storage ceiling are mechanically connected through bolts. A protection locking device is arranged at the joint of each layer, and the problems that a traditional measurement control point is long in dismantling period, cannot be recycled, pollutes the environment after being dismantled, and is incomplete in security and protection, and the levelness is not easy to master during platform installation are solved.