摘要:
A developer carrying member for carrying a developer is includes a substrate and a resin coat layer which is formed on the surface of the substrate and contains a binder resin and a conductive fine powder. The binder resin is composed of a copolymer having a monomeric unit of a methyl methacrylate monomer (M) and a monomeric unit of a nitrogen-containing vinyl monomer (N). A copolymerization molar ratio of the methyl methacrylate monomer (M) to the nitrogen-containing vinyl monomer (N) in the copolymer fulfills the following condition: M:N=4:1 to 999:1. The binder resin has a weight-average molecular weight (Mw) of from 3,000 to 50,000.
摘要:
The present invention relates to a developer carrying member for carrying a developer having at least a substrate and a resin-coated layer formed on the surface of the substrate. The developer carrying member is the one which carries a one-component developer to visualize the electrostatic latent image carried by the electrostatic latent image carrying member, the resin-coated layer contains at least a binder resin, graphitized particles and roughing particles, the graphitized particles has 0.20 to 0.95 of graphitization degree (p (002)), and wherein in the surface configuration of the resin-coated layer as measured by use of focusing optical laser, the volume (B) of a microtopographical region defined by a certain area (A) of the microtopographical region without convexity formed by the roughing particles meets the following relationship 4.5≦B/A≦6.5, and the resin-coated layer has 0.9 to 2.5 μm of arithmetic mean roughness (Ra).
摘要翻译:本发明涉及用于承载至少具有基材的显影剂和形成在基材表面上的树脂涂层的显影剂承载构件。 显影剂承载构件是携带单组分显影剂以使由静电潜像承载构件承载的静电潜像可视化的显影剂承载构件,树脂涂层至少含有粘合剂树脂,石墨化颗粒和粗粒,石墨化颗粒 具有0.20〜0.95的石墨化度(p(002)),其中,在通过使用聚焦光学激光测定的树脂被覆层的表面构造中,由特定区域限定的微图形区域的体积(B) A)的粗糙粒子形成的无凸形的微观形貌区域满足以下关系4.5 <= B / A <= 6.5,树脂涂层的算术平均粗糙度(Ra)为0.9〜2.5μm。
摘要:
The present invention relates to a developer carrying member for carrying a developer having at least a substrate and a resin-coated layer formed on the surface of the substrate. The developer carrying member is the one which carries a one-component developer to visualize the electrostatic latent image carried by the electrostatic latent image carrying member, the resin-coated layer contains at least a binder resin, graphitized particles and roughing particles, the graphitized particles has 0.20 to 0.95 of graphitization degree (p (002)), and wherein in the surface configuration of the resin-coated layer as measured by use of focusing optical laser, the volume (B) of a microtopographical region defined by a certain area (A) of the microtopographical region without convexity formed by the roughing particles meets the following relationship 4.5≦B/A≦6.5, and the resin-coated layer has 0.9 to 2.5 μm of arithmetic mean roughness (Ra).
摘要翻译:本发明涉及用于承载至少具有基材的显影剂和形成在基材表面上的树脂涂层的显影剂承载构件。 显影剂承载构件是携带单组分显影剂以使由静电潜像承载构件承载的静电潜像可视化的显影剂承载构件,树脂涂层至少含有粘合剂树脂,石墨化颗粒和粗粒,石墨化颗粒 具有0.20〜0.95的石墨化度(p(002)),其中,在通过使用聚焦光学激光测定的树脂被覆层的表面构造中,由特定区域限定的微图形区域的体积(B) A)的粗糙粒子形成的无凸形的微观形貌区域满足以下关系4.5 <= B / A <= 6.5,树脂涂层的算术平均粗糙度(Ra)为0.9〜2.5μm。
摘要:
The present invention relates to a developer carrying member for carrying a developer having at least a substrate and a resin-coated layer formed on the surface of the substrate. The developer carrying member is the one which carries a one-component developer to visualize the electrostatic latent image carried by the electrostatic latent image carrying member, the resin-coated layer contains at least a binder resin, graphitized particles and roughing particles, the graphitized particles has 0.20 to 0.95 of graphitization degree (p (002)), and wherein in the surface configuration of the resin-coated layer as measured by use of focusing optical laser, the volume (B) of a microtopographical region defined by a certain area (A) of the microtopographical region without convexity formed by the roughing particles meets the following relationship 4.5≦B/A≦6.5, and the resin-coated layer has 0.9 to 2.5 μm of arithmetic mean roughness (Ra).
摘要翻译:本发明涉及用于承载至少具有基材的显影剂和形成在基材表面上的树脂涂层的显影剂承载构件。 显影剂承载构件是携带单组分显影剂以使由静电潜像承载构件承载的静电潜像可视化的显影剂承载构件,树脂涂层至少含有粘合剂树脂,石墨化颗粒和粗粒,石墨化颗粒 具有0.20〜0.95的石墨化度(p(002)),其中,在通过使用聚焦光学激光测定的树脂被覆层的表面构造中,由特定区域限定的微图形区域的体积(B) A)的粗糙粒子形成的无凸形的微观形貌区域满足以下关系4.5 <= B / A <= 6.5,树脂涂层的算术平均粗糙度(Ra)为0.9〜2.5μm。
摘要:
A developer carrying member includes a substrate, the surface of which is covered with a conducting layer. The conducting layer contains a binder resin and conducting spherical particles dispersed therein having a number average particle diameter of from 0.3 .mu.m to 30 .mu.m and a true density of 3 g/cm.sup.3 or below.
摘要翻译:显影剂承载构件包括其表面被导电层覆盖的基板。 导电层含有数均粒径为0.3μm〜30μm,真密度为3g / cm 3以下的分散在其中的粘合剂树脂和导电球状粒子。
摘要:
The present invention relates to a developer carrying member for carrying a developer having at least a substrate and a resin-coated layer formed on the surface of the substrate. The developer carrying member is the one which carries a one-component developer to visualize the electrostatic latent image carried by the electrostatic latent image carrying member, the resin-coated layer contains at least a binder resin, graphitized particles and roughing particles, the graphitized particles has 0.20 to 0.95 of graphitization degree (p (002)), and wherein in the surface configuration of the resin-coated layer as measured by use of focusing optical laser, the volume (B) of a microtopographical region defined by a certain area (A) of the microtopographical region without convexity formed by the roughing particles meets the following relationship 4.5≦B/A≦6.5, and the resin-coated layer has 0.9 to 2.5 μm of arithmetic mean roughness (Ra).
摘要翻译:本发明涉及用于承载至少具有基材的显影剂和形成在基材表面上的树脂涂层的显影剂承载构件。 显影剂承载构件是携带单组分显影剂以使由静电潜像承载构件承载的静电潜像可视化的显影剂承载构件,树脂涂层至少含有粘合剂树脂,石墨化颗粒和粗粒,石墨化颗粒 具有石墨化度为0.20〜0.95(p(002)),在通过使用聚焦光学激光测定的树脂被覆层的表面构造中,由特定区域( A)的粗糙粒子形成的无凸形的微观形貌区域满足以下关系4.5 <= B / A <= 6.5,树脂涂层的算术平均粗糙度(Ra)为0.9〜2.5μm。
摘要:
A developer carrier is capable of stably charging a toner over a long term without change in physical surface shape and composition. The developer carrier has at least a substrate and resin coating layer formed on a surface of the substrate. The resin coating layer includes at least graphitized particles (i) with a degree of graphitization p(002) of 0.20 to 0.95 and an indentation hardness HUT [68] of 15 to 60 or graphitized particles (ii) with a degree of graphitization p(002) of 0.20 to 0.95 and an average circularity SF-1 of 0.64 or more.
摘要:
The present invention relates to a developer carrying member for carrying a developer having at least a substrate and a resin-coated layer formed on the surface of the substrate. The developer carrying member is the one which carries a one-component developer to visualize the electrostatic latent image carried by the electrostatic latent image carrying member, the resin-coated layer contains at least a binder resin, graphitized particles and roughing particles, the graphitized particles has 0.20 to 0.95 of graphitization degree (p (002)), and wherein in the surface configuration of the resin-coated layer as measured by use of focusing optical laser, the volume (B) of a microtopographical region defined by a certain area (A) of the microtopographical region without convexity formed by the roughing particles meets the following relationship 4.5≦B/A≦6.5, and the resin-coated layer has 0.9 to 2.5 μm of arithmetic mean roughness (Ra).
摘要翻译:本发明涉及用于承载至少具有基材的显影剂和形成在基材表面上的树脂涂层的显影剂承载构件。 显影剂承载构件是携带单组分显影剂以使由静电潜像承载构件承载的静电潜像可视化的显影剂承载构件,树脂涂层至少含有粘合剂树脂,石墨化颗粒和粗粒,石墨化颗粒 具有石墨化度为0.20〜0.95(p(002)),在通过使用聚焦光学激光测定的树脂被覆层的表面构造中,由特定区域( A)的粗糙粒子形成的无凸形的微观形貌区域满足以下关系4.5 <= B / A <= 6.5,树脂涂层的算术平均粗糙度(Ra)为0.9〜2.5μm。
摘要:
A developer carrier is capable of stably charging a toner over a long term without change in physical surface shape and composition. The developer carrier has at least a substrate and resin coating layer formed on a surface of the substrate. The resin coating layer includes at least graphitized particles (i) with a degree of graphitization p(002) of 0.20 to 0.95 and an indentation hardness HUT [68] of 15 to 60 or graphitized particles (ii) with a degree of graphitization p(002) of 0.20 to 0.95 and an average circularity SF-1 of 0.64 or more.
摘要:
In a developing assembly, a process cartridge and an image-forming method, a specific developer and a specific developer-carrying member are used in combination. The developer comprises toner particles containing at least a binder resin and a colorant, and conductive fine particles; the toner particles having a Circularity a of less than 0.970 as found from the following expression: Circularity a=L0/L where L0 represents the circumferential length of a circle having the same projected area as a particle image, and L represents the circumferential length of a projected image of a particle. The developer-carrying member has at least a substrate and a resin coat layer formed on the substrate; the resin coat layer containing at least a coat layer binder resin and a positively chargeable material.