JP2009063669A5

JP2009063669A5 -

Info

Publication number: JP2009063669A5
Application number: JP2007229394A
Authority: JP
Filing date: 2007-09-04
Publication date: 2010-10-21
Anticipated expiration: 2027-09-04

Claims

An image carrier on which an electrostatic latent image is formed;
Developing means for developing an electrostatic latent image on the image carrier into a developer image by supplying a developer onto the image carrier;
An intermediate transfer member that forms a first transfer portion together with the image carrier and onto which the developer image on the image carrier is transferred at the first transfer portion;
A transfer member that forms a second transfer portion together with the intermediate transfer member, and transfers the developer image on the intermediate transfer member to a recording material at the second transfer portion;
An image carrier cleaning member for recovering the developer on the image carrier;
An intermediate transfer member cleaning member for collecting the developer on the intermediate transfer member;
In an image forming apparatus comprising:
At a timing different from the case where the image forming operation in which the developer image developed on the image carrier developed by the developing means is transferred to the recording material via the first transfer portion and the second transfer portion is performed. It is possible to form an adjustment developer image on the image carrier by the developing means,
If the adjustment developer image on the image bearing member is formed, a first adjustment mode in which the adjusting developer image collected by the image carrier cleaning member, the intermediate said adjusting developer image an image forming apparatus comprising: a decision means to decide whether to perform a second adjustment mode in which the recovered by transferring member cleaning member, respectively.

The determination unit includes a determination unit that determines whether or not the usage amount of the constituent members constituting the image forming apparatus is a predetermined amount or more,
The determining means includes
When it is determined by the determining means that the usage amount of the constituent member is less than the predetermined amount, a determination is made to execute only the first adjustment mode,
If the amount of the component by the determination means determines that said the predetermined amount or more, in claim 1, characterized in that the decision to execute each said first adjustment mode and the second adjustment mode The image forming apparatus described.

The constituent members, an image forming apparatus according to claim 2, wherein said a transfer member.

The image forming apparatus according to claim 2, wherein the component member is the intermediate transfer member cleaning member.

A second transfer portion electric field forming means for forming an electric field in the second transfer portion;
When executing the second adjustment mode, the adjustment developer image is transferred from the image carrier to the intermediate transfer member, and the image forming operation is performed by the second transfer portion electric field forming unit. by forming a reverse polarity electric field of the second transfer section, one of the claims 1 to 4, characterized in that to convey the adjusting developer image on the intermediate transfer member to the intermediate transfer member cleaning member The image forming apparatus according to claim 1.

First transfer portion electric field forming means for forming an electric field in the first transfer portion ;
When performing pre Symbol first adjustment mode, by the first transfer unit electric field forming means, wherein the case where the image forming operation is performed by an electric field of opposite polarity to said first transfer unit, said image bearing the image forming apparatus according to any one of claims 1 to 5, characterized in that to convey the adjusting developer image on the body up to the image bearing member cleaning member.

A contact / separation means for separating the image carrier and the intermediate transfer member ;
When performing pre Symbol first adjustment mode by the moving means, by separating the said image bearing member and said intermediate transfer member, the image bearing member and the adjustment developer image on said image bearing member The image forming apparatus according to claim 1, wherein the image forming apparatus is conveyed to a cleaning member.

An image carrier on which an electrostatic latent image is formed;
Developing means for developing an electrostatic latent image on the image carrier into a developer image by supplying a developer onto the image carrier;
A recording material transport body that forms a transfer portion together with the image carrier and holds and transports the recording material ;
An image carrier cleaning member for recovering the developer on the image carrier;
A recording material conveying member cleaning member for collecting the developer on said recording material conveying member,
In an image forming apparatus comprising:
The image carrying member is developed by the developing unit at a timing different from the case where an image forming operation in which the developer image developed by the developing unit is transferred to a recording material through the transfer unit is performed. It is possible to form the adjustment developer image on the top,
When the adjustment developer image is formed on the image carrier, a first adjustment mode in which the adjustment developer image is collected by the image carrier cleaning member, and the adjustment developer image is recorded. an image forming apparatus comprising: a decision means to decide whether to perform a second adjustment mode in which collected by wood carrier cleaning member, respectively.

The determination unit includes a determination unit that determines whether or not the usage amount of the constituent members constituting the image forming apparatus is a predetermined amount or more,
The determining means includes
When it is determined by the determining means that the usage amount of the constituent member is less than the predetermined amount, a determination is made to execute only the first adjustment mode,
9. The method according to claim 8 , wherein when the determination unit determines that the usage amount of the constituent member is equal to or greater than the predetermined amount, the determination unit executes the first adjustment mode and the second adjustment mode. The image forming apparatus described.

The image forming apparatus according to claim 9 , wherein the component member is the recording material conveyance member cleaning member.

A transfer portion electric field forming means for forming an electric field in the transfer portion ;
When performing pre Symbol first adjustment mode, by the transfer unit electric field forming means, said by forming an electric field of opposite polarity to the transfer section and when the image forming operation is performed, the on the image bearing member the image forming apparatus according to adjustment developer image to any one of claims 8 to 10, characterized in that to convey to said image bearing member cleaning member.

A contact / separation means for separating the image carrier and the recording material transport body ;
When performing pre Symbol first adjustment mode, the by moving means, by separating the said recording material conveying member and the image bearing member, said image bearing the adjusting developer image on said image bearing member the image forming apparatus according to any one of claims 8 to 11, characterized in that to convey to the body cleaning member.