Image forming apparatus
An image forming apparatus includes a photoreceptor that has a surface layer in which a transmittance of light having a wavelength of 1,000 nm is 5% or more and 95% or less, a charging device that charges a surface of the photoreceptor, an electrostatic latent image forming device that forms an electrostatic latent image on the charged surface of the photoreceptor, a developing device that develops the electrostatic latent image formed on the surface of the photoreceptor with a developer containing a toner to form a toner image, a transfer device that transfers the toner image to a surface of a recording medium, and a photoreceptor cleaning device that has a cleaning blade coming into contact with the surface of the photoreceptor to clean the surface of the photoreceptor, in which a contact portion of the cleaning blade coming into contact with the photoreceptor contains a polyurethane rubber that is obtained by polymerizing at least a polyol component and a polyisocyanate component, a ratio M100/Re of a 100% modulus M100 (MPa) to an impact resilience coefficient Re (%) is 0.25 or more, the impact resilience coefficient Re is less than 25%, and a tensile stress with a 200% strain at a temperature of 23° C. is 15 MPa or more.
1 . An image forming apparatus comprising:
a photoreceptor that has a surface layer in which a transmittance of light having a wavelength of 1,000 nm is 5% or more and 95% or less;
a charging device that charges a surface of the photoreceptor;
an electrostatic latent image forming device that forms an electrostatic latent image on the charged surface of the photoreceptor;
a developing device that develops the electrostatic latent image formed on the surface of the photoreceptor with a developer containing a toner to form a toner image;
a transfer device that transfers the toner image to a surface of a recording medium; and
a photoreceptor cleaning device that has a cleaning blade coming into contact with the surface of the photoreceptor to clean the surface of the photoreceptor,
wherein a contact portion of the cleaning blade coming into contact with the photoreceptor contains a polyurethane rubber that is obtained by polymerizing at least a polyol component and a polyisocyanate component,
a ratio M100/Re of a 100% modulus M100 (MPa) to an impact resilience coefficient Re (%) is 0.25 or more,
the impact resilience coefficient Re is less than 25%, and
a tensile stress with a 200% strain at a temperature of 23° C. is 15 MPa or more.
2 . The image forming apparatus according to claim 1 ,
wherein the ratio M100/Re is 0.28 or more and 1.0 or less.
3 . The image forming apparatus according to claim 1 ,
wherein the cleaning blade is a laminate of the polyurethane rubber.
4 . The image forming apparatus according to claim 1 ,
wherein the surface layer of the photoreceptor contains at least one filler particle selected from the group consisting of organic particles and inorganic particles.
5 . The image forming apparatus according to claim 1 ,
wherein the surface layer of the photoreceptor is a layer that is obtained by curing a composition containing a monomer having a polymerizable functional group and fluororesin particles.
6 . The image forming apparatus according to claim 2 ,
wherein the surface layer of the photoreceptor is a layer that is obtained by curing a composition containing a monomer having a polymerizable functional group and fluororesin particles.
7 . The image forming apparatus according to claim 3 ,
wherein the surface layer of the photoreceptor is a layer that is obtained by curing a composition containing a monomer having a polymerizable functional group and fluororesin particles.
8 . The image forming apparatus according to claim 4 ,
wherein the surface layer of the photoreceptor is a layer that is obtained by curing a composition containing a monomer having a polymerizable functional group and fluororesin particles.
9 . The image forming apparatus according to claim 1 ,
wherein the surface layer of the photoreceptor is a layer that is obtained by curing a composition containing an ultraviolet curable acrylic resin and at least one particle selected from the group consisting of metal oxide particles and silica particles.
10 . The image forming apparatus according to claim 2 ,
wherein the surface layer of the photoreceptor is a layer that is obtained by curing a composition containing an ultraviolet curable acrylic resin and at least one particle selected from the group consisting of metal oxide particles and silica particles.
11 . The image forming apparatus according to claim 3 ,
wherein the surface layer of the photoreceptor is a layer that is obtained by curing a composition containing an ultraviolet curable acrylic resin and at least one particle selected from the group consisting of metal oxide particles and silica particles.
12 . The image forming apparatus according to claim 4 ,
wherein the surface layer of the photoreceptor is a layer that is obtained by curing a composition containing an ultraviolet curable acrylic resin and at least one particle selected from the group consisting of metal oxide particles and silica particles.