Image-formation apparatus

Abstract

An image forming apparatus transfers a toner image formed on a photoconductor drum onto a sheet-like recording member while the sheet-like recording member is transported and attracted to a transfer belt, and comprises a jam handling control unit for detecting a transport fault of the sheet-like recording member, and for stopping the transport operation when the transport fault is detected. When the transport fault is detected in a section other than a fixing section, the jam handling control unit first causes the transport operation of the fixing section, and thereafter causes the transfer belt and the transport operation on the upstream side thereof to stop, and any sheet-like recording member remaining on the transfer belt so that the transport mechanism on the upstream side thereof is transported and stopped at the position spanning between the area of the fixing section and the area of the transfer belt.

Description

technical field [0001] The present invention relates to an image forming apparatus such as a copying machine, a printer, a facsimile machine, etc. for forming various images on paper-type records, and more particularly, to an apparatus for dealing with paper jams that occur during conveyance of paper-type records technology. Background technique [0002] A prior art image forming apparatus is well known; in this apparatus, a toner image formed on an image carrier is transferred to a paper-like recording member by electrostatic adhesion of the transfer carrier to the toner image , Then, the image formation is completed by fixing the toner image on the paper recording member in the fixing unit. In some such imaging devices, especially in tandem imaging devices comprising multiple imaging stations each having an image carrier surrounded by various processing units, a single transfer The carrier is positioned facing the image carrier, ie the transfer carrier runs along the ent...

AI Technical Summary

Problems solved by technology

[0005] However, it is difficult to visually determine the position of the paper record between the transfer carrier and the image carrier; in addition, since the imaging device is usually not equipped with a device for detecting the position of the paper record on the transfer carrier, the image forming device itself Or it is difficult for the operator to judge whether the jammed paper record stays on the transfer carrier

[0006] Therefore, in the configuration in which the transfer carrier is driven in the reverse direction once a jam occurs, there is a problem that if the paper-like recording is not on the transfer carrier, the reverse action does not work, and it is time-consuming and expensive. Uneconomical

[0010] Therefore, the force causing the paper-like recording member to be attracted to the transfer carrier cannot be reduced only by cutting off the transfer bias as described in JP-A11-119490, the attraction between the transfer carrier and the paper-like recording member The force is still high; therefore, it is difficult to solve the problem of removing jammed paper records using the above structure

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