Image forming apparatus
AssigneeOki Data Corporation
InventorYukifumi Ito
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes a first image supporting member for forming a first image; a second image supporting member arranged adjacent to the first image supporting member for forming a second image; a first drive unit for driving the first image supporting member through a first driving force having a first phase; a second drive unit for driving the second image supporting member through a second driving force having a second phase shifted from the first phase; and a transfer unit for transferring the first image and the second image to a printing medium.
Claims13
An image forming apparatus comprising:
- a first image supporting member for forming a first image;
- a second image supporting member arranged adjacent to the first image supporting member for forming a second image, said second image supporting member being arranged to be paired with the first image supporting member as a first pair;
- a third image supporting member for forming a third image;
- a fourth image supporting member for forming a fourth image, said fourth image supporting member being arranged to be paired with the third image supporting member as a second pair;
- a first drive unit having a first phase for driving the first image supporting member;
- a second drive unit having a second phase shifted from the first phase for driving the second image supporting member;
- a third drive unit having a third phase for driving the third image supporting member;
- a fourth drive unit having a fourth phase shifted from the third phase by an angle of about 180 degrees for driving the fourth image supporting member;
- and
- a transfer unit for transferring the first image and the second image to a printing medium,
- wherein said second drive unit is arranged to have the second phase shifted from the first phase by an angle of about 180 degrees,
- said third drive unit is arranged to have the third phase shifted from the first phase by an angle of about 90 degrees, and
- said fourth drive unit is arranged to have the fourth phase shifted from the first phase by an angle of about 90 degrees.
An image forming apparatus comprising:
- a first image supporting member for forming a first image;
- a second image supporting member arranged adjacent to the first image supporting member for forming a second image, said second image supporting member being arranged to be paired with the first image supporting member as a first pair;
- a third image supporting member for forming a third image;
- a fourth image supporting member for forming a fourth image, said fourth image supporting member being arranged to be paired with the third image supporting member as a second pair;
- a first drive unit including a first gear for driving the first image supporting member, said first gear having a first rotational phase;
- a second drive unit including a second gear for driving the second image supporting member, said second gear having a second rotational phase shifted from the first rotational phase by an angle of about 180 degrees;
- a third drive unit including a third gear for driving the third image supporting member;
- a fourth drive unit including a fourth gear for driving the fourth image supporting member;
- and
- a transfer unit including a transportation belt for transferring the first image and the second image to a printing medium,
- wherein said third drive unit is arranged to have the third rotational phase shifted from the first rotational phase by an angle of about 90 degrees, and
- said fourth drive unit is arranged to have the fourth rotational phase shifted from the first rotational phase by an angle of about 90 degrees.
Dependencies are inferred from the claim text.