IMAGE FORMING APPARATUS
First Claim
Patent Images
1. An image forming apparatus comprising:
- a plurality of developing apparatuses, each of the developing apparatuses including;
a first chamber storing developer in an initial state and having at least one communication port communicating an inside and an outside of the first chamber;
a second chamber forming a circulation path of the developer with the first chamber during operation;
at least one sealing member sealing the communication port by being adhered to a circumference of the communication port in the initial state, the sealing member including a wide adhesion part which is adhered to be wider in area in a width direction orthogonal to a removing direction to be removed than another part in the removing direction; and
a removing device configured to remove the sealing member from the communication port;
a driving source driving each removing device of the plurality of developing apparatuses;
a plurality of switching devices switching connection/disconnection of transmission of a drive of the driving source and each removing device; and
a control portion controlling the plurality of switching devices such that the wide adhesion part of each sealing member is removed at timings different from each other per each developing apparatus.
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Abstract
A sheet member is adhered to a circumference of the communication port such that a part thereof in a removing direction to be removed is wider in area in a width direction orthogonal to the removing direction than another part. Therefore, a load required in removing the part in the removing direction increases. The parts in the removing direction of a plurality of sheet members are removed at timing different from each other. This arrangement makes it possible to reduce the load because the timings causing the high load in removing the sheet members are shifted.
12 Citations
10 Claims
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1. An image forming apparatus comprising:
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a plurality of developing apparatuses, each of the developing apparatuses including; a first chamber storing developer in an initial state and having at least one communication port communicating an inside and an outside of the first chamber; a second chamber forming a circulation path of the developer with the first chamber during operation; at least one sealing member sealing the communication port by being adhered to a circumference of the communication port in the initial state, the sealing member including a wide adhesion part which is adhered to be wider in area in a width direction orthogonal to a removing direction to be removed than another part in the removing direction; and a removing device configured to remove the sealing member from the communication port; a driving source driving each removing device of the plurality of developing apparatuses; a plurality of switching devices switching connection/disconnection of transmission of a drive of the driving source and each removing device; and a control portion controlling the plurality of switching devices such that the wide adhesion part of each sealing member is removed at timings different from each other per each developing apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image forming apparatus comprising:
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a plurality of developing apparatuses, each of the developing apparatuses including; a first chamber storing developer in an initial state and having at least one communication port communicating an inside and an outside of the first chamber; a second chamber forming a circulation path of the developer with the first chamber during operation; at least one sheet member sealing the communication port by being adhered to a circumference of the communication port in the initial state, the sealing member including a wide adhesion part which is adhered to be wider in area in a width direction orthogonal to a removing direction to be removed than another part in the removing direction; and a winding device configured to remove the sheet member from the communication port by winding up the sheet member; and a driving source driving each winding device of the plurality of developing apparatuses, wherein the wide adhesion parts of the sheet members of the plurality of developing apparatus are removed at different timings from each other per each developing apparatuses. - View Dependent Claims (9)
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10. An image forming apparatus comprising:
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a plurality of developing apparatuses, each of the developing apparatuses including; a first chamber storing developer in an initial state and having at least one communication port communicating an inside and an outside of the chamber; a second chamber forming a circulation path of the developer with the first chamber during operation; at least one sealing member sealing the communication port in the initial state; and a removing device configured to remove the sealing member from the communication port; and a driving source driving each removing device of the plurality of developing apparatuses, wherein the removing devices remove the sealing members such that a maximum value of a load in removing of each sealing member of the plurality of developing apparatuses is shifted from each other.
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Specification