Abstract: The present invention provides an exchangeable toner cartridge which can be attached to or detached from an apparatus main body. The toner cartridge includes the toner transfer member which is provided along a longitudinal direction of the toner cartridge and which can rotate. At the first range of the upstream side in a toner transfer direction the toner transfer member is formed into a substantially spiral shape, and at the second range of the downstream side in the toner transfer direction on a side of a toner supply port, toner transfer member has a shape different from that of the first range.

Abstract: The present invention provides a toner cartridge of replaceable type that is removably loaded into an apparatus main body, the toner cartridge including: a first section that is substantially cylindrical shape and at which a toner conveying member is disposed; and a second section that is provided at a substantially central portion in a longitudinal direction of the toner cartridge, the substantially central portion being a portion other than an upstream side in a toner conveyance direction of the first section and a downstream side in the toner conveyance direction of the first section at which a toner supply opening.

Abstract: A toner cartridge can be attached to and detached from an apparatus main body. The toner cartridge includes an outer housing having a substantially rectangular upper cross section and a substantially semi-circular lower cross section, and an inner housing that is disposed inside of a lower portion of the outer housing and that has a cylindrical shape with an opening formed at its side surface, the inner housing being rotatably supported in the lower portion of the outer housing, and at the opening a bridging portion being formed along a longitudinal direction of the inner housing.

Abstract: The present invention provides an exchangeable toner cartridge which can be attached to or detached from an apparatus main body. The toner cartridge includes the toner transfer member which is provided along a longitudinal direction of the toner cartridge and which can rotate. At the first range of the upstream side in a toner transfer direction the toner transfer member is formed into a substantially spiral shape, and at the second range of the downstream side in the toner transfer direction on a side of a toner supply port, toner transfer member has a shape different from that of the first range.

Abstract: The present invention provides an exchangeable toner cartridge which can be attached to or detached from an apparatus main body. The toner cartridge includes the toner transfer member which is provided along a longitudinal direction of the toner cartridge and which can rotate. At the first range of the upstream side in a toner transfer direction the toner transfer member is formed into a substantially spiral shape, and at the second range of the downstream side in the toner transfer direction on a side of a toner supply port, toner transfer member has a shape different from that of the first range.

Abstract: A toner cartridge can be attached to and detached from an apparatus main body. The toner cartridge includes an outer housing having a substantially rectangular upper cross section and a substantially semi-circular lower cross section, and an inner housing that is disposed inside of a lower portion of the outer housing and that has a cylindrical shape with an opening formed at its side surface, the inner housing being rotatably supported in the lower portion of the outer housing, and at the opening a bridging portion being formed along a longitudinal direction of the inner housing.

Abstract: The present invention provides an exchangeable toner cartridge which can be attached to or detached from an apparatus main body. The toner cartridge includes the toner transfer member which is provided along a longitudinal direction of the toner cartridge and which can rotate. At the first range of the upstream side in a toner transfer direction the toner transfer member is formed into a substantially spiral shape, and at the second range of the downstream side in the toner transfer direction on a side of a toner supply port, toner transfer member has a shape different from that of the first range.

Abstract: The present invention provides a toner cartridge of replaceable type that is removably loaded into an apparatus main body, the toner cartridge including: a first section that is substantially cylindrical shape and at which a toner conveying member is disposed; and a second section that is provided at a substantially central portion in a longitudinal direction of the toner cartridge, the substantially central portion being a portion other than an upstream side in a toner conveyance direction of the first section and a downstream side in the toner conveyance direction of the first section at which a toner supply opening.

Abstract: An image forming apparatus for forming an image with a developing agent, includes: a collecting-developing-agent occurring part in which the collecting developing agent to be collected in the developing agent occurs; a collection container for accommodating the collecting developing agent; a transporting part provided so as to connect the collection container and the collecting-developing-agent occurring part and for collecting and transporting the collecting developing agent occurring in the collecting-developing-agent occurring part; and a replacement part removably mounted in an apparatus body, wherein the collection container is mounted to be integrated with the replacement part.

Abstract: An image forming apparatus for forming an image with a developing agent, includes: a collecting-developing-agent occurring part in which the collecting developing agent to be collected in the developing agent occurs; a collection container for accommodating the collecting developing agent; a transporting part provided so as to connect the collection container and the collecting-developing-agent occurring part and for collecting and transporting the collecting developing agent occurring in the collecting-developing-agent occurring part; and a replacement part removably mounted in an apparatus body, wherein the collection container is mounted to be integrated with the replacement part.

Abstract: An image formation apparatus including a photoreceptor, a charger having a charger member for charging the photoreceptor, a latent image write unit for writing an electrostatic latent image onto the photoreceptor charged by the charger, and a developing device having a developer support with a magnetic field production member, for rendering visible the electrostatic latent image written by the latent image write unit with a developer. Further, the charging member of the charger is disposed under effect of a magnetic field produced by the magnetic field production member of the developing device, and the charging member is made of a nonmagnetic material.

Abstract: A print head device, which includes a plurality of image carrying bodies, a plurality of developing units, a plurality of charging units, and at least one intermediate transfer unit, is constructed as a unit assembly, and the unit assembly is inserted into and removed from image forming apparatus main body. The image forming apparatus contains a mechanism that the image carrying bodies are minutely movably supported by a frame of the unit assembly with a gap being located therebetween, and are positioned and fixed to a housing of the image forming apparatus main body.

Abstract: A charger has a cylindrical rotation tube coming in contact with an image receptor on which a toner image is formed, the rotation tube to which a predetermined charge bias is applied, and drive means for driving the rotation tube at a predetermined peripheral speed, the charger for uniformly charging the surface of the image receptor. When the peripheral speed of the image receptor is V1 and the peripheral speed of the rotation tube is V2, the following relation is satisfied: 1.01<(V2/V1)≦1.10.

Abstract: A charging member 2a of a charger 2 is disposed under the effect of a magnetic field produced by a magnetic field production member 4b of a developing device 4 and is made of a nonmagnetic material. The charger 2 comprises the charging member 2a and a removal member 2b disposed in contact with an photoreceptor 1 in the upstream of the charging member 2a, the removal member 2b for removing a deposit on the photoreceptor 1 and the charging member 2a is disposed under the effect of a magnetic field produced by the magnetic field production member 4b of the developing device 4 and is made of a nonmagnetic material. On the other hand, the removal member 2b is disposed under the effect of a magnetic field produced by the magnetic field production member 4b of the developing device 4 and is made of a magnetic material.

Abstract: An print head device 02, which includes plurality of image carrying bodies, a plurality of developing units, a plurality of charging units, and at least one intermediate transfer unit, is constructed as a unit assembly, and the unit assembly is inserted into and removed from a image forming apparatus main body 01. The image forming apparatus contains a mechanism that the image carrying bodies are minutely movably supported by a frame of the unit assembly with a gap being located therebetween, and are positioned and fixed to a housing of the image forming apparatus main body.

Abstract: A charger has a cylindrical rotation tube coming in contact with an image receptor on which a toner image is formed, the rotation tube to which a predetermined charge bias is applied, and drive means for driving the rotation tube at a predetermined peripheral speed, the charger for uniformly charging the surface of the image receptor.