DEVELOPING DEVICE

• Main Author: SAKAMAKI TOMOYUKI
• Format: Patent
• Language: English; Japanese
• Published: 22.03.2018
• Subjects: CINEMATOGRAPHY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

PROBLEM TO BE SOLVED: To suppress bending of a developer regulating member supported at both ends only even if regulated in size of a space for supporting the developer regulating member in a developer container and when the developer regulating member receives an agent pressure and a magnetic force.SOLUTION: A developer regulating member is unrotatably supported by a developer container only at both ends of the developer regulating member. A size of a cross-section of the developer regulating member orthogonal to a rotation axial line of the developer regulating member is equal to or less than 28 mm. The size of the cross-section secondary moment in a normal line of the developer carrier for a centroid of the cross-section of the developer regulating member orthogonal to the rotation axial line of the developer carrier is equal to or more than 25 mm, and the size of the cross-section secondary moment in a tangential direction of the developer carrier for the centroid of the cross-section of the developer regulating member orthogonal to the rotation axial line of the developer carrier is equal to or more than 70 mm.SELECTED DRAWING: Figure 6 【課題】 現像剤規制部材を現像容器に支持するための空間の大きさに制約があっても、両端部のみが支持され、磁性体の現像剤規制部材が剤圧力や磁気力を受けたときの現像剤規制部材の撓みを抑制する。【解決手段】 現像剤規制部材は、現像剤規制部材の両端部のみが現像容器に回転不能に支持され、現像剤担持体の回転軸線に直交する現像剤規制部材の断面積の大きさは２８ｍｍ２よりも小さく、現像剤担持体の回転軸線に直交する現像剤規制部材の断面の図心に対する現像剤担持体の法線方向の断面２次モーメントの大きさは２５ｍｍ４よりも大きく、現像剤担持体の回転軸線に直交する現像剤規制部材の断面の図心に対する現像剤担持体の接線方向の断面２次モーメントの大きさは７０ｍｍ４よりも大きいことを特徴とする。ことを特徴とする。【選択図】 図６