Image forming apparatus

• US 8,588,643 B2
• Filed: 07/07/2011
• Issued: 11/19/2013
• Est. Priority Date: 07/21/2010
• Status: Active Grant

• Current Assignee: Ricoh Company Limited
• Original Assignee: Ricoh Company Limited
• Inventors: Fukao, Takeshi
• Primary Examiner(s): Gray, David
• Assistant Examiner(s): HARRISON, MICHAEL A
• Application Number:
  US13/177,702
• Publication Number:
  US 20120020698A1
• Time in Patent Office: 866 Days
• Field of Search: 399/101, 399/256, 399/302, 399/308, 399/358, 399/360
• US Class Current: 399/101
• CPC Class Codes: G03G 15/161 with means for handling the intermediate support, e.g. heating, cleaning, coating with a transfer agent
• CPC Class Codes: G03G 21/0005 for removing solid developer or debris from the electrographic recording medium
• CPC Class Codes: G03G 21/105 Arrangements for conveying toner waste
• CPC Class Codes: G03G 21/12 Toner waste containers

Abstract

An image forming apparatus includes an image bearing member to bear a toner image, a waste toner storage mechanism to store residual toner, and an intermediate transfer unit detachable from the image forming apparatus. The intermediate transfer unit includes an intermediate transfer member onto which the toner image is transferred, a cleaning device to remove residual toner remaining on the intermediate transfer member after the toner image is transferred to a recording medium, and a connecting mechanism to connect the cleaning device and the waste toner storage mechanism. The connecting mechanism includes a movable connecting tube and a moving device to move the connecting tube between a first position at which the connecting tube engages the cleaning device and the waste toner storage mechanism, and the second position at which the connecting tube separates the cleaning device from the waste toner storage mechanism.

Claims

1. An image forming apparatus, comprising:

an image bearing member to bear a toner image;

a waste toner storage mechanism to store residual toner; and

an intermediate transfer unit removably installable in the image forming apparatus and disposed opposite the image bearing member, the intermediate transfer unit including

an intermediate transfer member onto which the toner image is transferred,

a cleaning device disposed opposite the intermediate transfer member, the cleaning device removing residual toner remaining on the intermediate transfer member after the toner image is transferred from the intermediate transfer member onto a recording medium, the residual toner being stored in the waste toner storage mechanism, and

a connecting mechanism to connect the cleaning device and the waste toner storage mechanism, the connecting mechanism including a connecting tube and a moving device, the connecting tube being movable between a first position and a second position, the moving device moving the connecting tube between the first position and the second position, the connecting tube engaging the cleaning device and the waste toner storage mechanism at the first position, and separating the cleaning device from the waste toner storage mechanism at the second position,

wherein the moving device comprises a lever that prevents the intermediate transfer unit from moving to a proximal side in the image forming apparatus in a state in which the connecting tube is at the first position.

2. An image forming apparatus, comprising:

an image bearing member to bear a toner image;

a waste toner storage mechanism to store residual toner; and

an intermediate transfer unit removably installable in the image forming apparatus and disposed opposite the image bearing member, the intermediate transfer unit including

an intermediate transfer member onto which the toner image is transferred,

a cleaning device disposed opposite the intermediate transfer member, the cleaning device removing residual toner remaining on the intermediate transfer member after the toner image is transferred from the intermediate transfer member onto a recording medium, the residual toner being stored in the waste toner storage mechanism, and

a connecting mechanism to connect the cleaning device and the waste toner storage mechanism, the connecting mechanism including a connecting tube and a moving device, the connecting tube being movable between a first position and a second position, the moving device moving the connecting tube between the first position and the second position, the connecting tube engaging the cleaning device and the waste toner storage mechanism at the first position, and separating the cleaning device from the waste toner storage mechanism at the second position,

wherein the moving device comprises a cam that moves the connecting tube between the first position and the second position.

3. An image forming apparatus, comprising:

an image bearing member to bear a toner image;

a waste toner storage mechanism to store residual toner; and

an intermediate transfer unit removably installable in the image forming apparatus and disposed opposite the image bearing member, the intermediate transfer unit including

an intermediate transfer member onto which the toner image is transferred,

a cleaning device disposed opposite the intermediate transfer member, the cleaning device removing residual toner remaining on the intermediate transfer member after the toner image is transferred from the intermediate transfer member onto a recording medium, the residual toner being stored in the waste toner storage mechanism, and

a connecting mechanism to connect the cleaning device and the waste toner storage mechanism, the connecting mechanism including a connecting tube and a moving device, the connecting tube being movable between a first position and a second position, the moving device moving the connecting tube between the first position and the second position, the connecting tube engaging the cleaning device and the waste toner storage mechanism at the first position, and separating the cleaning device from the waste toner storage mechanism at the second position,

wherein a direction of movement of the connecting tube between the first position and the second position is different from a direction from which the intermediate transfer unit is installed in the image forming apparatus.

4. An image forming apparatus, comprising:

an image bearing member to bear a toner image;

a waste toner storage mechanism to store residual toner; and

an intermediate transfer unit removably installable in the image forming apparatus and disposed opposite the image bearing member, the intermediate transfer unit including

an intermediate transfer member onto which the toner image is transferred,

a cleaning device disposed opposite the intermediate transfer member, the cleaning device removing residual toner remaining on the intermediate transfer member after the toner image is transferred from the intermediate transfer member onto a recording medium, the residual toner being stored in the waste toner storage mechanism, and

a connecting mechanism to connect the cleaning device and the waste toner storage mechanism, the connecting mechanism including a connecting tube and a moving device, the connecting tube being movable between a first position and a second position, the moving device moving the connecting tube between the first position and the second position, the connecting tube engaging the cleaning device and the waste toner storage mechanism at the first position, and separating the cleaning device from the waste toner storage mechanism at the second position,

wherein the connecting tube includes a plurality of openings that connect to the cleaning device and the waste toner storage mechanism, the intermediate transfer unit includes a plurality of shutters corresponding to the plurality of openings, and the shutters cover the openings in a state in which the connecting tube is at the second position.

5. An image forming apparatus, comprising:

an image bearing member to bear a toner image;

a waste toner storage mechanism to store residual toner; and

an intermediate transfer unit removably installable in the image forming apparatus and disposed opposite the image bearing member, the intermediate transfer unit including

an intermediate transfer member onto which the toner image is transferred,

a cleaning device disposed opposite the intermediate transfer member, the cleaning device removing residual toner remaining on the intermediate transfer member after the toner image is transferred from the intermediate transfer member onto a recording medium, the residual toner being stored in the waste toner storage mechanism, and

a connecting mechanism to connect the cleaning device and the waste toner storage mechanism, the connecting mechanism including a connecting tube and a moving device, the connecting tube being movable between a first position and a second position, the moving device moving the connecting tube between the first position and the second position, the connecting tube engaging the cleaning device and the waste toner storage mechanism at the first position, and separating the cleaning device from the waste toner storage mechanism at the second position,

wherein residual toner remaining in the connecting tube is discharged to the waste toner storage mechanism before removing the intermediate transfer unit from the image forming apparatus.