摘要:
A cleaning device includes at least one first cleaning member that removes residual substances that remain on a surface of an endless belt by being in contact with the surface of the endless belt while rotating in a direction that is opposite to a movement direction in which the endless belt moves; a second cleaning member that is brought into contact with and separated from the surface of the endless belt at a predetermined timing and removes the residual substances that remain on the surface of the endless belt; and a switching unit that switches a rotation direction of the first cleaning member to a direction the same as the movement direction of the endless belt when the second cleaning member is brought into contact with the surface of the endless belt and cleans the surface.
摘要:
A cleaning device includes first to third cleaning members that clean a surface of an endless belt that is looped over rollers including a driving roller. The first cleaning member is brought into contact with and separated from the surface at a predetermined timing. The second cleaning member is disposed upstream of the first cleaning member and downstream of the driving roller in a movement direction of the endless belt. The second cleaning member is in contact with the endless belt so as to prevent a tension variation of the endless belt caused by the first cleaning member from affecting the driving roller. The third cleaning member is disposed downstream of the first cleaning member. A contact state in which the third cleaning member is in contact with the endless belt is switched from a first contact state to a second contact state so as to reduce the tension variation.
摘要:
An image forming apparatus includes an image bearing member, a medium transport member, an image transfer member, a first detection member detecting widthwise deviation of the image bearing member, a first deviation correcting member tiltable relative to the width direction and supporting the image bearing member, a first correction control section tilting the first deviation correcting member to correct deviation of the image bearing member, a second detection member detecting widthwise deviation of the transport member, a second deviation correcting member tiltable relative to the width direction and supporting the transport member, and a second correction control section tilting the second deviation correcting member to correct deviation of the transport member. A width-direction moving amount of the image bearing member per unit time when the first deviation correcting member is tilted is larger than that of the transport member per unit time when the second deviation correcting member is tilted.
摘要:
An image forming apparatus includes an image bearing member, a medium transport member, an image transfer member, a first detection member detecting widthwise deviation of the image bearing member, a first deviation correcting member tiltable relative to the width direction and supporting the image bearing member, a first correction control section tilting the first deviation correcting member to correct deviation of the image bearing member, a second detection member detecting widthwise deviation of the transport member, a second deviation correcting member tiltable relative to the width direction and supporting the transport member, and a second correction control section tilting the second deviation correcting member to correct deviation of the transport member.
摘要:
A cleaning device includes a first cleaning member, a first opposing member, a second cleaning member, a second opposing member, and a pressing member. The first and second cleaning members clean an outer surface of a belt member by coming into contact with the outer surface. The first and second opposing members are in contact with an inner face of the belt member at positions that are opposite the first and second cleaning members. The pressing member is disposed between the first and second opposing members and is in contact with the outer surface of the belt member. The pressing member presses a portion of the belt member that is located between the first and second opposing members from an outer surface side of the belt member toward an inner face side of the belt member.
摘要:
An image forming apparatus includes: an apparatus body including: an image forming unit that forms toner images having the colors being different from each other; a intermediate transfer body that has a belt-shape, and that is arranged in an upper portion of the image forming unit being inclined with respect to the horizontal direction, the toner images being transferred onto the intermediate transfer body; an intermediate transfer body unit that detachably holds the intermediate transfer body with respect to the apparatus body; and a guide rail member that detachably guides the intermediate transfer body unit in a direction of one side of the apparatus body, and that is set so that the direction, in which the intermediate transfer body unit is guided, is changed in the middle of guiding.
摘要:
A lens driving device is provided to reduce a number of required high-accuracy components and also eliminate the unevenness of maximum displacement of a lens holder with respect to a base. An outer edge of a lower spring plate is clamped by a lower casing served as a base and a lower spacer. A first protrusion is formed on a sidewall of the lens holder and protruding outward therefrom. A second protrusion protruding toward the lens holder is formed on an inner circumference of the lower spacer and extends to a position above and separating from the first protrusion by a distance S. The first protrusion props against the second protrusion when the lens holder is moved toward an imaged-object side and reaching a displacement of the distance S.
摘要:
A toner for developing an electrostatic image is formed of toner particles; wherein each toner particle includes (i) 100 wt. parts of a binder resin having a glass transition point (Tg) of 50-70° C., (ii) 0.2-20 wt. parts of solid wax, and (iii) colorant particles or magnetic powder, (iv) lubricant particles carrying a liquid lubricant, so that the toner particle retains at its surface the liquid lubricant gradually released from the particles (iv). The toner may be further blended with an organically treated inorganic fine powder to provide a developer. The toner or developer retains good lubricity and releasability so that it is suitable to be used in an image forming method including means contacting a latent image-bearing means, such as a contact charging means, a contact transfer means or a contact cleaning means.
摘要:
A toner for developing an electrostatic image is composed by a binder resin, and a magnetic material and/or a colorant. The binder resin (a) comprises a styrene resin polymerized in the presence of a poly-functional polymerization initiator, (b) provides a molecular weight distribution on a GPC chromatogram showing a maximum (P1) in a molecular weight range of 3.5.times.10.sup.3 -5.times.10.sup.4 and a maximum (P2) or shoulder in a molecular weight range of at least 1.times.10.sup.5, and (c) contains 15 wt. % or less of a resin component in a molecular weight range of at most 3.times.10.sup.3. Further the toner contains at most 100 ppm of styrene and benzaldehyde.
摘要:
The present invention relates to an electrophotographic image forming method characterized in using a photosensitive member having an organic photoconductive layer and fluorine-containing resin particles in the surface, a contact charging means being in contact with the photosensitive member to electrostatically charge it, a contact transfer means being in contact with the photosensitive member to transfer the developed image to the transfer medium;wherein the toner to be used for developing the latent image is a magnetic toner comprising at least a magnetic material and a binder resin, wherein the binder resin contains a polymer synthesized from vinyl monomer in the presence of an aromatic organic solvent in an amount of 50 parts by weight or more on the basis of 100 parts of the binder resin, and the amount of the residual aromatic organic solvent in the magnetic toner is 500 ppm by weight or less.