JP2015025857A5 - - Google Patents

Description

A developing device according to claim 1 of the present invention regulates a developing member that holds a developer while rotating and a layer thickness of the developer that extends along an axial direction of the developing member and is held by the developing member. and the layer thickness regulating member, fixed the holding member that accommodates and holds the developing member and the layer thickness regulating member, the holding member so as to sandwich the layer thickness regulating member in the longitudinal direction on both sides of the layer thickness regulating member A sheet-like sheet that is open to the holding member side and that contains a developer therein and that suppresses the developer contained in the container from being supplied to the holding member side. A member is affixed around the opening edge of the housing portion, and a housing member in which a facing surface facing the at least one end surface of the layer thickness regulating member in the axial direction is formed, and the facing surface and the end surface Disposed between the housing member and the holding member. Characterized in that it and a gap member for regulating the axial direction of deformation of the housing member when said end surface or the opposing surface when the deformation in the axial direction relative to the member.

In addition, a circular through-hole 162A (see FIG. 5) is formed in the attachment portion 162, and a screw 164 is formed through the through-hole 162A on the front side of the housing 116 in the apparatus depth direction. The screw hole 117 is tightened. As a result, the housing member 118 is fixed to the housing 116 at the front side of the protection unit 134 in the apparatus depth direction. In other words, the housing member 118 is fixed to the housing 116 at one end side in the longitudinal direction of the layer thickness regulating member 104 .

As shown in FIG. 2B, the attachment site 170 is formed with a through-hole 170A that passes therethrough. On the other hand, a mounting portion 176 is formed on the rear side of the housing 116 in the apparatus depth direction so as to protrude upward from the support portion 154 as shown in FIG. 2A and 2B, the screw 172 is tightened into the screw hole 176A formed in the attachment portion 176 through the above-described through hole 170A. As a result, the housing member 118 is fixed to the housing 116 at the back portion of the protection portion 134 in the apparatus depth direction. In other words, the housing member 118 is fixed to the housing 116 on the other end side in the longitudinal direction of the layer thickness regulating member 104 .

Claims (6)

A developing member that holds the developer while rotating;
A layer thickness regulating member that extends along the axial direction of the developing member and regulates the layer thickness of the developer held by the developing member;
A holding member that holds and accommodates the developing member and the layer thickness regulating member;
Said layer being fixed to the holding member as in the longitudinal direction of the both sides sandwiching the layer thickness regulating member having a thickness regulating member, receiving portion developer therein is accommodated in an opening in the holding member side is formed, the A sheet-like sheet member that suppresses the developer contained in the housing part from being supplied to the holding member side is pasted around the opening edge of the housing part, and at least one end surface of the layer thickness regulating member And a housing member formed with opposing surfaces facing each other in the axial direction;
It arrange | positions between the said opposing surface and the said end surface, and when the said accommodating member deform | transforms with respect to the said holding member in the said axial direction, it contacts the said end surface or the said opposing surface, and the deformation | transformation of the said axial direction of the said accommodating member is controlled. A gap member;
A developing device comprising: The layer thickness regulating member is cylindrical.
The developing device according to claim 1, wherein the gap member is disposed on a center line of the layer thickness regulating member.   The developing device according to claim 1, wherein the gap member is a protrusion that is formed integrally with the housing member and protrudes from the facing surface toward the end surface. An image carrier on which an electrostatic latent image is formed;
The developing device according to claim 1, wherein the electrostatic latent image formed on the image carrier is developed as a toner image.
An image forming unit comprising: An image forming unit according to claim 4,
A transfer member for transferring a toner image formed by the developing device of the image forming unit to a recording medium;
An image forming apparatus comprising: An image carrier on which an electrostatic latent image is formed;
The developing device according to claim 1, wherein the electrostatic latent image formed on the image carrier is developed as a toner image.
A transfer member for transferring a toner image developed by the developing device to a recording medium;
An image forming apparatus comprising: