Abstract: A sheet supporting apparatus includes a cassette body supporting a sheet, a regulation device disposed on the cassette body in a moving direction and regulating a position of an edge of the sheet, and a plurality of engaged portions disposed on the cassette body. The regulation device includes a body portion, an engaging portion moving between an engagement position at which the engaging portion engages with one of the engaged portions and a separation position at which the engaging portion is separated from the engaged portions, an operation member pivotably supported on the body portion and operated between a first posture at which the operation member positions the engaging portion at the engagement position and a second posture at which the operation member positions the engaging portion at the separation position, and a retention portion retaining the operation member at the first posture.

Abstract: An electrostatic charge developing toner includes a toner particle that includes a pigment particle having a surface aluminum proportion by an X-ray photoelectron spectroscopy of 6.0 atom % or more and 12.0 atom % or less and a binder resin having a carboxy group.

Abstract: A sheet supporting apparatus includes a supporting portion to support a sheet, and a regulation unit to regulate a position of an edge of the supported sheet. The regulation unit includes a body portion, an engagement portion to move between an engagement position at which the engagement portion engages with the supporting portion and a separation position at which the engagement portion is separated away from the supporting portion, and an operation portion to move the engagement portion between the engagement position and the separation position. The operation portion is pivotably supported by the body portion and includes a pressing portion to press the engagement portion from the engagement position to the separation position by the operation portion being pivoted. In addition, a fixing component fixes the operation portion to be immovable with respect to the body portion so as to retain the engagement portion at the engagement position.

Abstract: An image forming apparatus includes an openable member rotatable relative to a main assembly of the image forming apparatus; and a supporting member connected between the main assembly of the image forming apparatus and the openable member configured to support the openable member when the openable member is opened. The supporting member includes a first arm member and a second arm member which are slidable relative to each other, a pinion provided on the first arm member, a viscous damper mounted on a rotation shaft of the pinion, a rack provided on the second arm member and engaged with the pinion. By opening the openable member, relative slide movement is caused between the first arm member and the second arm member so that the pinion engaged with the rack rotates and a braking force is produced by the viscous damper.

Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin and a white pigment, wherein, in a particle size distribution of a maximum Feret diameter of particles of the white pigment present in the toner particle, a ratio of particles of the white pigment having a maximum Feret diameter of 200 nm or more and less than 400 nm is 50% by number or more with respect to the entire particles of the white pigment, and a maximum value of a frequency with respect to particles of the white pigment having a maximum Feret diameter of 650 nm or more and less than 1,000 nm is larger than a minimum value of a frequency with respect to particles of the white pigment having a maximum Feret diameter of 500 nm or more and less than 650 nm.

Abstract: A toner for developing an electrostatic image includes toner particles that each include a binder resin and a release agent. The ratio B/A of a half-width B of an exothermic peak Tc resulting from the release agent which is determined in a first cooling step by differential scanning calorimetry to a half-width A of an endothermic peak Tm resulting from the release agent which is determined in a first heating step prior to the first cooling step by differential scanning calorimetry is 1.5 or more and 4 or less.

Abstract: An electrostatic charge image developing toner includes a toner particle which contains a crystalline resin, an amorphous resin, and at least one of an inorganic pigment and a metallic pigment, wherein in differential scanning calorimetry, an endothermic peak Tm (° C.) derived from the crystalline resin in a first temperature rising process and an exothermic peak Tc (° C.) derived from the crystalline resin in a first temperature falling process after the first temperature rising process are present, and a relationship expressed by Tm>Tc is satisfied.

Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin and a white pigment, wherein, in a particle size distribution of a maximum Feret diameter of particles of the white pigment present in the toner particle, a ratio of particles of the white pigment having a maximum Feret diameter of 200 nm or more and less than 400 nm is 50% by number or more with respect to the entire particles of the white pigment, and a maximum value of a frequency with respect to particles of the white pigment having a maximum Feret diameter of 650 nm or more and less than 1,000 nm is larger than a minimum value of a frequency with respect to particles of the white pigment having a maximum Feret diameter of 500 nm or more and less than 650 nm.

Abstract: An electrostatic charge image developing toner includes toner particles including a binder resin and a white pigment, wherein a maximum frequent value in distribution of eccentricity B of the white pigment represented by the following Expression (1) is from 0.75 to 0.95, and a skewness in the distribution of the eccentricity B is from ?1.20 to 0.00: Expression (1): eccentricity B=2d/D, wherein D represents an equivalent circle diameter (?m) of a toner particle in observation of the cross section of the toner particle, and d represents a distance (?m) from the centroid of the toner particle to the centroid of the white pigment in observation of the cross section of the toner particle.

Abstract: An electrostatic charge image developing toner includes toner particles including a binder resin and a white pigment, wherein a maximum frequent value in distribution of eccentricity B of the white pigment represented by the following Expression (1) is from 0.75 to 0.95, and a skewness in the distribution of the eccentricity B is from ?1.20 to 0.00: Expression (1): eccentricity B=2d/D, wherein D represents an equivalent circle diameter (?m) of a toner particle in observation of the cross section of the toner particle, and d represents a distance (?m) from the centroid of the toner particle to the centroid of the white pigment in observation of the cross section of the toner particle.

Abstract: A white toner for developing an electrostatic charge image includes a white toner particle containing a binder resin and a white pigment particle, wherein, when a number average circle equivalent diameter of the white pigment particles, which are observed in a sectional image of the white toner particle, is taken as A, and a number average circle equivalent diameter of the white pigment particles, which are present in a surface layer portion within 35% from a surface of the white toner particle with respect to a particle diameter thereof, is taken as B, a relationship expressed by A>B is satisfied.

Abstract: A sheet supporting apparatus includes a supporting portion configured to support a sheet, and a regulation unit configured to regulate a position of edge of the sheet supported by the supporting portion, the regulation unit configured to be moved and positioned with respect to the supporting portion. The regulation unit includes a body portion, an engagement portion supported by the body portion, and configured to move between an engagement position at which the engagement portion engages with the supporting portion and a separation position at which the engagement portion is separated away from the supporting portion, and a regulation portion configured to position the engagement portion with respect to the body portion such that the engagement portion is retained at the engagement position.

Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin, a colorant, and 5?-chloro-3-hydroxy-2?-methoxy-2-naphthanilide, wherein the colorant contains at least one of Pigment Red 238 and Pigment Red 269, the content of the colorant is from 1% by weight to 20% by weight, and the content of 5?-chloro-3-hydroxy-2?-methoxy-2-naphthanilide is from 1 ppm to 300 ppm based on the weight.

Abstract: An image forming apparatus includes an openable member rotatable relative to a main assembly of the image forming apparatus; and a supporting member connected between the main assembly of the image forming apparatus and the openable member configured to support the openable member when the openable member is opened. The supporting member includes a first arm member and a second arm member which are slidable relative to each other, a pinion provided on the first arm member, a viscous damper mounted on a rotation shaft of the pinion, a rack provided on the second arm member and engaged with the pinion. By opening the openable member, relative slide movement is caused between the first arm member and the second arm member so that the pinion engaged with the rack rotates and a braking force is produced by the viscous damper.

Abstract: An electrostatic charge image developing toner includes a binder resin, C.I. Pigment Yellow 155, and toner particles containing at least one selected from dimethyl 2-aminoterephthalate and 1,4-bis(acetoacetylamino)benzene, wherein a total content of dimethyl 2-aminoterephthalate and 1,4-bis(acetoacetylamino)benzene in the toner particles is from 1 ppm to 500 ppm.

Abstract: An electrostatic charge image developing toner includes a binder resin, C.I. Pigment Yellow 155, and toner particles containing at least one selected from dimethyl 2-aminoterephthalate and 1,4-bis(acetoacetylamino)benzene, wherein a total content of dimethyl 2-aminoterephthalate and 1,4-bis(acetoacetylamino)benzene in the toner particles is from 1 ppm to 500 ppm.

Abstract: An electrostatic charge image developing toner includes toner particles including a binder resin, a cyano pigment containing cyano group (—CN) in a molecular structure, and a benzonitrile compound which has a structure in which at least one cyano group (—CN) is present on a benzene ring as a substituent and has a molecular weight equal to or smaller than 300, wherein a content of the benzonitrile compound is from 1 ppm to 500 ppm with respect to the total amount of the toner particles.

Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin, a colorant, and 5?-chloro-3-hydroxy-2?-methoxy-2-naphthanilide, wherein the colorant contains at least one of Pigment Red 238 and Pigment Red 269, the content of the colorant is from 1% by weight to 20% by weight, and the content of 5?-chloro-3-hydroxy-2?-methoxy-2-naphthanilide is from 1 ppm to 300 ppm based on the weight.

Abstract: An electrostatic charge image developing toner includes a binder resin, a colorant, and 4-nitro-o-anisidine, wherein the colorant contains a compound represented by the following formula (I), a content of the colorant in the toner is from 1.0% by weight to 20.0% by weight, and a content of 4-nitro-o-anisidine in the toner is from 0.1 ppm to 1,000 ppm based on the weight: wherein R represents an organic group.

Abstract: An image forming apparatus includes a fixing portion for fixing an image on a recording material while feeding the recording material carrying the image; a guiding member, provided downstream of the fixing portion with respect to a feeding direction of the recording material, for guiding the recording material; and an openable member for opening and closing a main assembly of the image forming apparatus, wherein the guiding member moves to narrow a feeding path of the recording material when the openable member is opened.