JP2020118736A5

JP2020118736A5 -

Info

Publication number: JP2020118736A5
Application number: JP2019007379A
Authority: JP
Filing date: 2019-01-18
Publication date: 2022-01-25
Anticipated expiration: 2039-01-18

Description

上記課題を解決するため、本発明の画像形成装置は、トナーを収容した収容容器が着脱可能な画像形成装置であって、感光体と、前記感光体に静電潜像を形成するために前記感光体を露光する露光手段と、前記感光体に形成された前記静電潜像をトナーを用いて現像する現像手段と、前記現像手段に設けられ、前記現像手段の前記トナーを撹拌するために回転する現像スクリューと、前記現像スクリューを回転する駆動源と、前記現像手段に補給するための前記トナーを収容した収容容器が装着される装着部と、回転することによって前記現像手段へ前記トナーを補給する補給スクリューと、前記補給スクリューが回転することで前記補給スクリューと一緒に回転する回転体と、前記駆動源の駆動力を前記補給スクリューへ伝達する連結状態と、前記駆動源の駆動力を前記補給スクリューへ伝達しない非連結状態とに制御される電磁クラッチと、前記収容容器を装着するために開閉される扉と、
前記扉の開閉を検知する開閉検知手段と、前記回転体に設けられたフラグと、前記回転体の回転によって前記フラグが検知位置を通過することを検知するフラグ検知手段と、前記電磁クラッチを非連結状態に制御した状態、且つ、前記開閉検知手段の検知結果が前記扉の閉じた閉状態において前記駆動源を駆動させたときの前記フラグ検知手段の検知結果を取得し、前記検知結果に基づいて前記電磁クラッチの異常を判定する制御手段と、を有することを特徴とする。 In order to solve the above problems, the image forming apparatus of the present invention is an image forming apparatus in which a container containing toner is removable, and is described above in order to form an electrostatic latent image on a photoconductor and the photoconductor. An exposure means for exposing the photoconductor, a developing means for developing the electrostatic latent image formed on the photoconductor using toner, and a developing means provided in the developing means for stirring the toner of the developing means. A rotating developing screw, a driving source for rotating the developing screw, a mounting portion on which a storage container containing the toner for replenishing the developing means is mounted, and a mounting portion for mounting the toner to the developing means by rotating. The replenishment screw to be replenished, the rotating body that rotates together with the replenishment screw by rotating the replenishment screw, the connected state in which the driving force of the driving source is transmitted to the replenishing screw, and the driving force of the driving source. An electromagnetic clutch controlled to a non-connected state that does not transmit to the replenishment screw, a door that opens and closes to mount the storage container, and
The open / close detecting means for detecting the opening / closing of the door, the flag provided on the rotating body, the flag detecting means for detecting that the flag passes through the detection position due to the rotation of the rotating body, and the electromagnetic clutch are not used. The detection result of the flag detecting means when the drive source is driven in the state controlled to the connected state and the detection result of the opening / closing detecting means is the closed state of the door is acquired, and the detection result is based on the detection result. It is characterized by having a control means for determining an abnormality of the electromagnetic clutch.

Claims

An image forming device in which the container containing toner is removable.
Photoreceptor and
An exposure means for exposing the photoconductor in order to form an electrostatic latent image on the photoconductor, and an exposure means.
A developing means for developing the electrostatic latent image formed on the photoconductor using toner, and
A developing screw provided in the developing means and rotated to stir the toner of the developing means, and a developing screw.
The drive source that rotates the developing screw and
A mounting portion on which a storage container containing the toner for replenishing the developing means is mounted, and a mounting portion.
A replenishment screw that replenishes the toner to the developing means by rotating,
A rotating body that rotates together with the replenishment screw when the replenishment screw rotates,
An electromagnetic clutch controlled to a connected state in which the driving force of the driving source is transmitted to the replenishing screw and a non-connected state in which the driving force of the driving source is not transmitted to the replenishing screw.
A door that opens and closes to attach the storage container,
An opening / closing detecting means for detecting the opening / closing of the door,
The flag provided on the rotating body and
A flag detecting means for detecting that the flag passes through the detection position due to the rotation of the rotating body, and
The detection result of the flag detecting means when the drive source is driven in the state where the electromagnetic clutch is controlled to the non-connected state and the detection result of the opening / closing detecting means is the closed state of the door is acquired. An image forming apparatus comprising: a control means for determining an abnormality of the electromagnetic clutch based on the detection result.

The image forming apparatus according to claim 1, wherein the control means determines an abnormality of the electromagnetic clutch when the number of times the flag detecting means detects the flag is a predetermined number of times or more.

The image forming apparatus according to claim 2, wherein the predetermined number of times is a number larger than 1.

The image forming apparatus according to any one of claims 1 to 3, wherein the rotating body is a gear that transmits the driving force of the driving electric power to the supply screw.

The invention according to any one of claims 1 to 4, wherein the control means sets the number of times the flag detecting means detects the flag to 0 each time the electromagnetic clutch is controlled to the connected state. Image forming device.

1. 5. The image forming apparatus according to any one of 5.

The image forming according to any one of claims 1 to 6, further comprising a notifying means for notifying the display that an abnormality has occurred when the abnormality of the electromagnetic clutch is determined by the control means. Device.