IMAGE FORMING APPARATUS, METHOD OF ALLOWING DRIVEN MEMBER TO BE MOUNTED ON APPARATUS BODY IN IMAGE FORMING APPARATUS AND METHOD OF ALLOWING DRIVE FORCE TO BE TRANSMITTED TO BELT UNIT IN IMAGE FORMING APPARATUS
First Claim
1. An image forming apparatus comprising:
- an apparatus body that includes a drive source;
a driven member that is detachably attachable to the apparatus body;
a first transmission member that is provided in the apparatus body, that includes a base rotatable around a rotation axis, and that transmits drive force from the drive source to the driven member; and
a second transmission member that is provided in the driven member, that includes a base rotatable around the rotation axis, and that transmits drive force from the first transmission member to the driven member,any one of the first transmission member and the second transmission member including a projection that projects from the base of the one of the transmission members, the other transmission member including a receiving port in the base of the other transmission member, the receiving port receiving the projection,the receiving port being allowed to receive the projection when a rotation angle between the second transmission member and the first transmission member is an angle set in advance while not being allowed to receive the projection when the rotation angle is out of the angle set in advance, at the time of mounting the driven member on the apparatus body.
1 Assignment
0 Petitions
Accused Products
Abstract
The image forming apparatus includes: an apparatus body including a drive source; a driven member detachably attachable to the apparatus body; a first transmission member in the apparatus body, including a base rotatable around a rotation axis, and transmitting drive force from the drive source to the driven member; and a second transmission member in the driven member, including a base rotatable around the rotation axis, and transmitting drive force from the first transmission member to the driven member. Any of the first and second transmission members includes a projection, and the other includes a receiving port. The receiving port receives the projection when a rotation angle between the first and second transmission members is an angle set in advance while not receiving the projection when the rotation angle is out of the angle, at the time of mounting the driven member on the apparatus body.
21 Citations
22 Claims
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1. An image forming apparatus comprising:
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an apparatus body that includes a drive source; a driven member that is detachably attachable to the apparatus body; a first transmission member that is provided in the apparatus body, that includes a base rotatable around a rotation axis, and that transmits drive force from the drive source to the driven member; and a second transmission member that is provided in the driven member, that includes a base rotatable around the rotation axis, and that transmits drive force from the first transmission member to the driven member, any one of the first transmission member and the second transmission member including a projection that projects from the base of the one of the transmission members, the other transmission member including a receiving port in the base of the other transmission member, the receiving port receiving the projection, the receiving port being allowed to receive the projection when a rotation angle between the second transmission member and the first transmission member is an angle set in advance while not being allowed to receive the projection when the rotation angle is out of the angle set in advance, at the time of mounting the driven member on the apparatus body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An image forming apparatus comprising:
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an image forming part that includes a plurality of image carriers; a setting mechanism that sets the image forming part in any one of a first mode in which rotation drive force is transmitted to the plurality of image carriers, and a second mode in which transmission of rotation drive force to any of the plurality of image carriers is stopped; a belt unit that is detachably provided to an apparatus body, and that includes a belt member arranged in contact with the plurality of image carriers, an arrangement mechanism arranging the belt member in any one of a first arrangement state of being separated from the any of the plurality of image carriers and a second arrangement state of being in contact with the any of the plurality of image carriers, and a receiving member receiving drive force to be used by the arrangement mechanism; and a transmission member that is coupled with the receiving member of the belt unit, and that transmits drive force to the receiving member, coupling of the receiving member and the transmission member being prevented in any one of cases where the image forming part is in the first mode and the belt member is in the first arrangement state, and where the image forming part is in the second mode and the belt member is in the second arrangement state, at the time of mounting the belt unit on the apparatus body. - View Dependent Claims (10, 11, 12, 13, 14)
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15. An image forming apparatus comprising:
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a plurality of image carriers that are rotatably provided, and that each carry a toner image; a plurality of carrier-side receiving members that are provided corresponding to the plurality of image carriers, respectively, and that each receive drive force for a corresponding one of the plurality of image carriers; a plurality of drive-side transmission members that are provided corresponding to the plurality of image carriers, respectively, that are each coupled with a corresponding one of the plurality of carrier-side receiving members, and that each transmit drive force to a corresponding one of the plurality of carrier-side receiving members; a release member that releases coupling of any of the plurality of carrier-side receiving members and a corresponding one of the plurality of drive-side transmission members, which correspond to any of the plurality of image carriers; a belt unit that includes an intermediate transfer belt arranged in contact with the plurality of image carriers and onto which the toner image is transferred, a separation mechanism causing the intermediate transfer belt to be separated from the any of the plurality of image carriers, and a receiving member receiving drive force used by the separation mechanism; and a drive force supplying member that is provided so as to be capable of moving in conjunction with the release member and the receiving member, and that supplies drive force to the release member and the receiving member. - View Dependent Claims (16, 17, 18, 19)
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20. A method of allowing a driven member to be mounted on an apparatus body in an image forming apparatus having:
- the apparatus body that includes a drive source;
the driven member that is detachably attachable to the apparatus body;
a first transmission member that is provided in the apparatus body, that includes a base rotatable around a rotation axis, and that transmits drive force from the drive source to the driven member; and
a second transmission member that is provided in the driven member, that includes a base rotatable around the rotation axis, and that transmits drive force from the first transmission member to the driven member, anyone of the first transmission member and the second transmission member including a projection that projects from the base of the one of the transmission members, the other transmission member including a receiving port in the base of the other transmission member, the receiving port receiving the projection, the method of allowing the driven member to be mounted on the apparatus body in the image forming apparatus comprising;allowing the receiving port to receive the projection when a rotation angle between the second transmission member and the first transmission member is an angle set in advance and preventing the receiving port from receiving the projection when the rotation angle is out of the angle set in advance, at the time of mounting the driven member on the apparatus body.
- the apparatus body that includes a drive source;
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21. A method of allowing drive force to be transmitted to a belt unit in an image forming apparatus having an image forming part that includes a plurality of image carriers;
- a setting mechanism that sets the image forming part in any one of a first mode in which rotation drive force is transmitted to the plurality of image carriers, and a second mode in which transmission of rotation drive force to any of the plurality of image carriers is stopped;
the belt unit that is detachably provided to an apparatus body, and that includes a belt member arranged in contact with the plurality of image carriers, an arrangement mechanism arranging the belt member in any one of a first arrangement state of being separated from the any of the plurality of image carriers and a second arrangement state of being in contact with the any of the plurality of image carriers, and a receiving member receiving drive force to be used by the arrangement mechanism; and
a transmission member that is coupled with the receiving member of the belt unit, and that transmits drive force to the receiving member, the method of allowing drive force to be transmitted to the belt unit in the image forming apparatus comprising;allowing coupling of the receiving member and the transmission member in any one of cases where the image forming part is in the first mode and the belt member is in the second arrangement state, and where the image forming part is in the second mode and the belt member is in the first arrangement state, at the time of mounting the belt unit on the apparatus body. - View Dependent Claims (22)
- a setting mechanism that sets the image forming part in any one of a first mode in which rotation drive force is transmitted to the plurality of image carriers, and a second mode in which transmission of rotation drive force to any of the plurality of image carriers is stopped;
Specification