1. An image forming apparatus comprising:
a body;
a conveyance belt looped around at least two rotation members for circulation to convey a sheet of recording media;
an image forming device disposed opposing the conveyance belt to form images on the sheet at a first side of the conveyance belt opposing the image forming device;
a refeeding unit arranged to switch back the sheet having an image formed on a first face of the sheet and refeed and guide the sheet to the surface of the conveyance belt at a second side of the conveyance belt not opposing the image forming device;
a reverse passage arranged to, after the sheet refed from the refeeding unit passes the surface of the conveyance belt at the second side, guide the sheet again to the surface of the conveyance belt at the first side of the conveyance belt opposing the image forming device while turning around the sheet and bypassing an outer circumferential part of the conveyance belt looped around the at least two rotation members;
a charging unit forming part of the reverse passage and including a charger to charge the conveyance belt, the charger disposed between an inner side of the reverse passage and one of the at least two rotation members upstream in a direction in which the sheet is conveyed by the surface of the conveyance belt at the first side of the conveyance belt;
an openable cover pivotable between a closed position to cover an internal area of the body including at least the charger and the reverse passage and an open position to open the internal area to an outside of the body; and
a unit-interlocked moving device to, with a pivoting movement of the openable cover from the closed position to the open position, move the charging unit toward an outside of the reverse passage to a removable position at which the charging unit is removable from the body with the openable cover placed at the open position.
2. The image forming apparatus of claim 1, further comprising a pressing unit to press the charging unit in such a direction as to prevent the charging unit from moving to the removable position when the openable cover is placed at the closed position.
3. The image forming apparatus of claim 1, wherein the open position includes a first open position and a second open position,
the openable cover is pivotable between the first open position and the second open position,
when the openable cover is placed at the first open position, a refeed passage from the refeeding unit and the reverse passage are open to the outside of the body,
when the openable cover is placed at the second open position, the charging unit is removable from the body, and
with a pivoting movement of the openable cover from the first open position to the second open position, the unit-interlocked moving device causes the charging unit to move to the removable position.
4. The image forming apparatus of claim 3, further comprising a pressing unit to press the charging unit in such a direction as to prevent the charging unit from moving to the removable position when the openable cover is placed at the closed position or the first open position.
5. The image forming apparatus of claim 3, further comprising an urging member to urge the unit-interlocked moving device in such a direction as to prevent the charging unit from moving to the outside of the reverse passage when the openable cover is placed at the first open position.
6. The image forming apparatus of claim 1, wherein the unit-linked moving device is disposed at each end of the reverse passage in a width direction of the sheet passing the reverse passage.
7. The image forming apparatus of claim 6, wherein the unit-linked moving device has a slider guide member fixed at the body at a position adjacent to the each end of the reverse passage and a link unit disposed between the slider guide member and the charging unit to link the slider guide member and the charging unit.
8. The image forming apparatus of claim 7, wherein the slider guide member has a groove formed along a longitudinal direction of the slider guide member, and
the link unit has a slider slidably engaging the groove of the slider guide member and the charging unit.
9. The image forming apparatus of claim 8, wherein with the pivoting movement of the openable cover from the closed position to the open position, the charging unit slides along a length of the groove of the slider guide member.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A low-voltage contactor comprising:
an actuating unit,
a stationary contact, and
a contact carrier operated by the actuating unit and including a movable contact, a spring having a first end and a second end and acting on the movable contact to produce a force that reduces the resistance between the stationary and movable contacts and a connecting means for connecting to the contact carrier to the actuating unit, wherein the contact carrier comprises,
a framework part including the connecting means,
a holder part including a holding member adapted to receive and hold the movable contact and the spring,
the holder part and the framework part are arranged to be detachably connected to each other such that said holder part is slid into said framework part in a direction perpendicular to the force of the spring acting between said framework part and said holder part and,
the holder part and the framework part are designed so that the first end of the spring is acting on the movable contact held by the holder part and the second end is acting on the framework part when the framework part and the holder part are connected to each other,
wherein the framework part includes a framework spring positioner retaining the second end of the spring so that the spring is in a stable position with respect to the framework part and the movable contact is received by the holding member, and
wherein the contact carrier includes a carrier spring positioner retaining the first end of the spring so that the spring is in a stable position with respect to the movable contact so as to prevent the holder part gliding from the framework part.
2. The low-voltage contactor according to claim 1, wherein the framework part and the holder part further respectively comprise a linking means, the linking means are designed to be connected to each other.
3. The low-voltage contactor according to claim 1, wherein the framework part is made of a first thermal and electrical insulation material.
4. The low-voltage contactor according to claim 1, wherein the holder part is made of a second thermal and electrical insulation material different from the first thermal and electrical insulation material.
5. The low-voltage contactor according to claim 4, wherein the second thermal and electrical insulation material is a thermosetting plastic material.
6. The low-voltage contactor according to claim 4, wherein the first thermal and electrical insulation material is a thermoplastic material.
7. The low-voltage contactor according to claim 5, wherein the first thermal and electrical insulation material is a thermoplastic material.
8. The low-voltage contactor according to claim 1, wherein the framework spring positioner comprises a raised portion on the framework part that interacts with the spring such that the second end of the spring is prevented from displacing laterally with respect to a longitudinal axis of the spring.
9. The low-voltage contactor according to claim 8, wherein the carrier spring positioner comprises a raised portion that interacts with the spring such that the first end of the spring is prevented from displacing laterally with respect to a longitudinal axis of the spring.
10. The low-voltage contactor according to claim 9, wherein the carrier spring positioner is positioned on the movable contact.
11. The low-voltage contactor according to claim 10, wherein the holder part includes a contact retainer that comprises a raised portion that interacts with a cavity located in the movable contact such that the movable contact is prevented from sliding out of the holder part.