摘要:
A cleaning blade includes a supporting member, and a tabular elastic member. One end portion of the elastic member is fixed to the supporting member, and the other end portion is a free end portion whose tip edge is to be contacted with a member to be cleaned while rubbing the surface to remove a residual material therefrom. The tip portion of the free end portion of the elastic member ranging in length from 0 to 500 μm from the tip surface thereof includes at least a cured material of a curable compound and an elastic material of the elastic member. The elastic member satisfies the relationship, 0.05(%)≦[(tM−tA)/tA]×100≦2%, wherein tM represents the maximum thickness of the tip portion of the elastic member, and tA represents the average thickness of the rear portion of the free end portion of the elastic member.
摘要:
An image forming apparatus, including: an image bearing member; a charging unit; an exposure unit; a developing unit; a transfer unit; a fixing unit; and a cleaning unit including a cleaning blade, wherein the charging unit includes a charging roller that is brought into contact with the image bearing member for charging, the charging roller abutting the image bearing member at a pressing force of 10 mN/cm to 1,000 mN/cm, wherein the cleaning blade includes an elastic member that abuts the surface of the image bearing member to remove a residue attached to the surface of the image bearing member, and wherein an abutment part of the elastic member, which abuts the surface of the image bearing member, includes a cured product of an ultraviolet curable composition containing a (meth)acrylate compound having an alicyclic structure having 6 or more carbon atoms in a molecule.
摘要:
An image forming apparatus includes an image carrier, a charging mechanism to charge a surface of the image carrier, an electrostatic latent image forming mechanism to form an electrostatic latent image on the surface of the image carrier, a developing mechanism to develop the electrostatic latent image formed on the surface of the image carrier into a toner image, a transfer mechanism to transfer the toner image on the surface of the image carrier to a transfer body, and a cleaning mechanism including a cleaning blade to clean a transfer residue toner adhering to the surface of the image carrier by contacting the surface of the image carrier. The cleaning blade includes a strip shaped elastic blade and a surface layer formed on an opposing surface of the strip shaped elastic blade opposite the surface of the image carrier.
摘要:
A cleaning blade is provided. The cleaning blade includes a strip-shaped elastic blade. At least the tip edge portion of the elastic blade, which is to be contacted with the surface of a moving object to remove a powdery material from the surface of the moving object, includes an ultraviolet crosslinked resin, which includes an acrylate or methacrylate unit including a fluorine-containing group, and another acrylate or methacrylate unit having a tricyclodecane or adamantane skeleton, from the surface of the tip edge portion to a depth of not less than 5 μm.
摘要:
A cleaning blade includes an elastic member configured to come into contact with a surface of a member to be cleaned and remove residual matter adhering to the surface of the member to be cleaned. The elastic member satisfies the following requirements a and b: a. The elastic member has a contact portion configured to come into contact with the surface of the member to be cleaned and the contact portion includes a modified layer that contains a cured product of an ultraviolet curable composition containing a (meth)acrylate compound; and b. A value obtained by normalizing a peak area ratio SA/SB of a modified portion with a peak area ratio SA′/SB′ of a portion outside the modified layer is 1.5 or more and 10 or less where SA is a peak area value at 1162 cm−1 and SB is a peak area value at 1533 cm−1 obtained by infrared microspectrometry, and the modified portion is a region that extends 100 μm in a contact portion thickness inward direction from the contact portion on a plane that lies at an equal distance from two surfaces constituting the contact portion.
摘要:
An image forming apparatus, including: an image bearing member; a charging unit; an exposure unit; a developing unit; a transfer unit; a fixing unit; and a cleaning unit including a cleaning blade, wherein the charging unit includes a charging roller that is brought into contact with the image bearing member for charging, the charging roller abutting the image bearing member at a pressing force of 10 mN/cm to 1,000 mN/cm, wherein the cleaning blade includes an elastic member that abuts the surface of the image bearing member to remove a residue attached to the surface of the image bearing member, and wherein an abutment part of the elastic member, which abuts the surface of the image bearing member, includes a cured product of an ultraviolet curable composition containing a (meth)acrylate compound having an alicyclic structure having 6 or more carbon atoms in a molecule.
摘要:
Provided is a cleaning blade including an elastic member configured to abut on a surface of a cleaning target member and remove residual material deposited thereon, wherein elastic member satisfies requirements a to c below, a. an abutment part of the elastic member to abut on the surface of the cleaning target member has a reformed layer, b. Martens hardness at a surface of the reformed layer is from 1.5 to 15 N/mm2, and c. a relationship H/L between maximum Martens hardness H among Martens hardnesses H in a region inward from the abutment part thicknesswise and distance L from the surface of the reformed layer is from 0.010 to 0.2 (N/mm2·1/μm), where distance L represents minimum distance among distances to the surface of the reformed layer, from positions at which a measured Martens hardness and a measured elastic power are equal to those of the elastic member.
摘要:
A cleaning blade, including a strip-shaped elastic blade to contact the surface of a member to be cleaned, traveling on an edge line of the elastic blade, to remove a powder from the surface thereof, wherein the edge line of the elastic blade is impregnated with an ultraviolet curable resin including a fluorinated acrylic monomer, a surface layer harder than the elastic blade is formed on each of an under surface thereof, having the edge line as one line of the under surface and facing the member, and an apical surface thereof, having the edge line as one line of the apical surface and being parallel to a direction of the thickness thereof, and the apical surface is impregnated with the ultraviolet curable resin at a depth of from 50 to 150 μm and the under surface is impregnated therewith at a depth of from 20 to 100 μm.
摘要:
A method for producing a cleaning blade including at least a strip-shaped elastic blade, the method including: (1) a step of producing an elastic blade preform formed of a polyurethane rubber; (2) a step of impregnating at least a part, which is to contact an image bearer, of the elastic blade preform with an ultraviolet-curable composition including a (meth)acrylate compound; (3) a step of immersing the part impregnated of the elastic blade preform in a washing solvent to remove the ultraviolet-curable composition including the (meth)acrylate compound remaining on a surface of the impregnated part; and (4) a step of curing the ultraviolet-curable composition including the (meth)acrylate compound that has impregnated the elastic blade preform to produce an elastic blade.
摘要:
A cleaning blade cleaning the surface of an object includes a rigid holder; and a strip-shaped elastic body fixed on the holder, including a tip ridgeline contacting the surface of the object. The elastic body has a length (L) projecting from the holder not less than 4 mm, a Martens hardness of from 1.0 to 10.0 N/mm2 from the tip ridgeline to the middle (L/2) thereof, and a Martens hardness of from 0.3 to 0.8 N/mm2 from the middle (L/2) thereof.