62results about How to "Improve charge stability" patented technology

Provided is a toner having high charging rapidity to reach a sufficient charging amount in a short time, high stability of charging from the initial stage to a time when a large amount of sheets is printed out, and high stability of charging under a high temperature and high humidity. In a toner including toner particles, each of which contains at least a binder resin, a colorant, and a charge controlling resin, the charge controlling resin is a copolymer of a structure A having at least a specific salicylic acid derivative structure and a structure B having sulfonic acid or sulfonic acid ester as a substituent.

Provided is an electrophotographic positively charged toner and a manufacturing method thereof, according to which even if after kneading, pulverization and classification the toner is made spherical by melting the surfaces of the particles in a hot air current, the charge control agent is not coated and hence the charging ability thereof is not reduced, and thus the toner has sufficient tribo-charging ability for good image formation, excellent transfer efficiency, and excellent charge build-up performance and excellent charge stability upon continuous printing. In the case of an electrophotographic positively charged toner comprising a core toner that has a binder resin, a wax, a colorant and a charge control agent as principal component materials thereof and has been spherified through heat treatment, and at least fine silica particles as an external additive, the charge control agent is made to contain a resin having a quaternary ammonium salt group as a functional group and a nigrosine dye.

The invention discloses a multifunctional wall-mounted AP (access point). The multifunctional wall-mounted AP comprises a base and an AP panel, the rear end face of the base is provided with a RJ45 Ethernet interface connected to the Ethernet with a POE (power over Ethernet) power supply function, and a POE power source management module, a data transmission module, a master control module and a wireless charging board are arranged in the base. An output end of the RJ45 Ethernet interface is respectively connected to an input end of the POE power source management module and an input end of the data transmission module, and an output end of the POE power source management module and an output end of the data transmission module are respectively connected to the master control module. A wireless charging coil in horizontal arrangement is embedded in the wireless charging board and respectively connected with the POE power source management module and the master control module, and the wireless charging board can be movably drawn outside the base along the front end of the base. The multifunctional wall-mounted AP has the advantages that due to the AP is embedded into a wall, space occupancy is avoided while troubles of addition of a power line are avoided as well; external intelligent equipment can be charged wirelessly by the aid of the wireless charging coil, so that high practicality is achieved.

The invention provides an electrostatic electret loading device for melt-blown cloth. A melt-blown cloth collecting bracket is provided with a collecting conveyor belt, a preliminary electrostatic electret device is arranged above the collecting conveyor belt, the discharge end of the melt-blown cloth collecting bracket is provided with a front electret frame, one side of the front electret frameis provided with a back electret frame, and the front electret frame and the back electret frame are rotationally symmetrical; and a plurality of grounding rollers are arranged on the front electret frame, an electret wire is arranged above each grounding roller, and the two ends of each electret wire are fixed to the front electret frame through discharging bases. Through the preliminary electrostatic electret device and a double-sided electrostatic electret, charges in electret materials can be stored for a long time, the charge stability of the materials is greatly improved, the material filtering efficiency is much stable, and the electrostatic electret loading device is simple in structure, high in adaptability and suitable for application and popularization.

A magnetic toner which has superior charging stability and charging uniformity, maintains stable developing performance without any dependence on service environments and may less cause any decrease in image density and any image defects such as fog and ghost, the magnetic toner has magnetic toner particles, each of the magnetic toner particles has magnetic toner base particle containing a binder resin and a magnetic material, and an inorganic fine powder, (a) the magnetic toner having, at a frequency of 100 kHz and a temperature of 30 DEG C, a dielectric loss factor (e'') of 2.5*10-1 pF / m or more and 7.0*10-1 pF / m or less and a dielectric dissipation factor (tan delta L) of 3.0*10-2 or less, (b) the magnetic toner having, in a dielectric dissipation factor (tan delta) thereof at a frequency of 100 kHz, a maximum value (tan delta H) within the temperature range of 60 DEG C to 140 DEG C; and the tan delta H and the tan delta L satisfying (tan delta H-tan delta L)< = 3.0*10-2.

The invention discloses a multifunctional wall-mounted AP (access point). The multifunctional wall-mounted AP comprises a base and an AP panel, the rear end face of the base is provided with a RJ45 Ethernet interface connected to the Ethernet with a POE (power over Ethernet) power supply function, and a POE power source management module, a data transmission module, a master control module and a wireless charging board are arranged in the base. An output end of the RJ45 Ethernet interface is respectively connected to an input end of the POE power source management module and an input end of the data transmission module, and an output end of the POE power source management module and an output end of the data transmission module are respectively connected to the master control module. A wireless charging coil in horizontal arrangement is embedded in the wireless charging board and respectively connected with the POE power source management module and the master control module, and the wireless charging board can be movably drawn outside the base along the front end of the base. The multifunctional wall-mounted AP has the advantages that due to the AP is embedded into a wall, space occupancy is avoided while troubles of addition of a power line are avoided as well; external intelligent equipment can be charged wirelessly by the aid of the wireless charging coil, so that high practicality is achieved.