Image forming apparatus with high-voltage board

1. An image forming apparatus, comprising:

a processing unit for performing an image forming process using a toner to form an image on a sheet;

a housing body including a frame member made of a sheet metal and having a first surface and a second surface opposite to the first surface, the first and second surface defining an accommodation space for accommodating the processing unit;

a waste toner unit to be mounted on the second surface of the frame member, the waste toner unit including a unit housing and a discharge path for discharging waste toner that was not used in the image forming process, the discharge path being defined by the unit housing;

a high-voltage board to be mounted on the second surface of the frame member with the second unit located therebetween for supplying a high voltage to the first unit; and

a connecting mechanism for electrically connecting the first unit and the high-voltage board to supply the high voltage to the first unit;

wherein:

the connecting mechanism includes a unit-side wire member extending in the accommodation space, a unit-side holding member made of resin and adapted to hold the unit-side wire member, a board-side wire member connectable to the unit-side wire member and extending outside the accommodation space, and a board-side holding member made of resin and adapted to hold the board-side wire member, the board-side holding member being a part of the unit housing;

the unit-side wire member includes a first end portion connectable to the first unit and a second end portion opposite to the first end portion;

the board-side wire member includes a third end portion connectable to the high-voltage board and a fourth end portion opposite to the third end portion;

one of the second and fourth end portions serves as a first contact with a biasing shape and the other serves as a second contact which can come into contact with the first contact; and

the first contact is pressed into contact with the second contact while accumulating a biasing force when the unit-side wire member and the board-side wire member are connected.

2. An image forming apparatus according to claim 1 , wherein:

the unit housing includes a first housing part extending along the frame member and a second housing part defining the discharge path by facing the first housing part;

the board-side wire member includes a first board-side wire member and a second board-side wire member;

the first board-side wire member includes a fifth end portion formed with the first or second contact and a sixth end portion formed with a third contact;

the second board-side wire member includes a seventh end portion connectable to the high-voltage board and an eighth end portion formed with a fourth contact which can be locked to the third contact;

the board-side holding member includes a first holding member for holding the first board-side wire member and a second holding member for holding the second board-side wire member;

the first holding member is a part of the first housing part; and

the second holding member is a part of the second housing part.

3. An image forming apparatus according to claim 1 , wherein:

the unit-side holding member is made of an electric insulator and the board-side holding member is made of an electric insulator; and

the unit-side wire member and the board-side wire member are metal wires having no insulation coatings.

4. An image forming apparatus, comprising:

a first unit for performing an image forming process on a sheet;

a frame member made of a sheet metal and having a first surface facing the first unit and a second surface opposite to the first surface;

a second unit to be mounted on the second surface of the frame member;

a high-voltage board to be mounted on the second surface of the frame member with the second unit located therebetween for supplying a high voltage to the first unit;

a fan arranged at the second surface of the frame member; and

a connecting mechanism for electrically connecting the first unit and the high-voltage board to supply the high voltage to the first unit;

wherein:

the connecting mechanism includes a unit-side wire member extending at a side of the first surface, a unit-side holding member made of resin and adapted to hold the unit-side wire member, a board-side wire member connectable to the unit-side wire member and extending at a side of the second surface, and a board-side holding member made of resin and adapted to hold the board-side wire member;

the unit-side holding member includes a part configured to form a ventilation path with a part to receive air blown by the fan and an opening to blow the air to the first unit therethrough;

the unit-side wire member includes a first end portion connectable to the first unit and a second end portion opposite to the first end portion;

the board-side wire member includes a third end portion connectable to the high-voltage board and a fourth end portion opposite to the third end portion;

one of the second and fourth end portions serves as a first contact with a biasing shape and the other serves as a second contact which can come into contact with the first contact; and

the first contact is pressed into contact with the second contact while accumulating a biasing force when the unit-side wire member and the board-side wire member are connected.