摘要:
An image forming apparatus comprising: a latent electrostatic image bearing member; a charging unit configured to uniformly charge a surface of the image bearing member; an exposing unit configured to form a latent electrostatic image on the surface of the charged image bearing member; a developing unit configured to develop the latent electrostatic image formed on the surface of the image bearing member by supplying a toner to form a visible image; a transferring unit configured to transfer the visible image formed on the surface of the image bearing member to a recording medium; a fixing unit configured to fix the visible image on the recording medium by application of at least one of heat and pressure; a cleaning unit configured to clean a residual toner on the image bearing member; and a toner replenishing device configured to replenish the toner to the developing unit, wherein the toner is replenished by the toner replenishing device comprising a pump configured to supply the toner and a toner container arranged in conjunction with the pump, and wherein the toner comprises a binder resin, a colorant and a releasing agent and has a dynamic friction coefficient of 0.15 to 0.35.
摘要:
A full color toner containing a binder resin, a release agent and a colorant. The binder resin contains a polyester resin containing a hybrid resin containing one or more vinyl group polymer units and one or more polyester units. The content A of the hybrid resin and the content B of the release agent satisfy the following relationship: B/2 ≤ A ≤ 3B
摘要:
The object is to provide a toner which can be smoothly replrenished by a toner replenishing device using a powder pump even when the toner containes a releasing agent, and an image forming apparatus using the toner. There is provided a toner, which comprises a binder resin, a colorant and a releasing agent, has a dynamic friction coefficient of 0.15 to 0.35, and is replenished by the toner replenishing device having a powder pump configured to automatically supply the toner and a toner container arranged in conjuction with the powder pump so as to develop a latent electrostatic image on a image bearing member.
摘要:
An image forming apparatus of the present invention includes a latent electrostatic image bearing member, a latent electrostatic image forming unit configured to form a latent electrostatic image on the latent electrostatic image bearing member, at least three developing units each configured to develop the latent electrostatic image using a toner to form a visible image, a transferring unit configured to transfer the visible image on a recording medium, and an image fixing unit configured to the transferred image on the recording medium, in which the developing units respectively include any one of a yellow toner, a magenta toner, and a cyan toner, the magenta toner includes C.I. pigment red 269, and the yellow toner includes C.I pigment yellow 180 or C.I pigment yellow 155.
摘要:
The present invention provides an image-forming toner having no charge-decrease at high temperature and humidity, an excellent image with no fogging and good granularity, and high transfer efficiency even with a low-charged carrier. The image-forming toner contains a binder resin, a colorant and a charge control agent comprising a complex compound represented by Formula 1: wherein X represents a hydrogen atom, lower alkyl group, nitro group or halogen group and may be identical or different, A + represents a hydrogen ion, sodium ion, potassium ion, ammonium ion or aliphatic ammonium ion; wherein, in X-ray diffraction of the charge control agent using CuKα radiation as a X-ray source, the measurement angle 2θ is within a range of 5 degrees to 30 degrees, the main peak of the Bragg angle 2θ is a Main Peak A at 8.6±0.3 degrees, and the X ray intensity of the main peak is within a range of 8000 cps to 15,000 cps at a scanning speed of 0.5 degrees /min to 4 degrees/min.