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US 2016/0103411 A1Published application
Sheet conveyance apparatus and image forming apparatus
AssigneeCanon Kabushiki Kaisha
InventorsKengo Sato, Masaki Kakitani
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AssigneeCanon Kabushiki Kaisha
InventorsKengo Sato, Masaki Kakitani
Estimating the term…
A sheet conveyance apparatus is equipped with a first rotator, a second rotator conveying a sheet together with the first rotator, a cam member changing a position of the second rotator with respect to the first rotator, a drive unit rotating the cam member, and a load portion applying load on a rotation of the cam member. The load portion includes a contact member having a cam surface formed on a side surface in an axial direction of the cam member, an abutment member capable of abutting against the cam surface, and a biasing member biasing one of the contact member and the abutment member toward the other, a biasing force of the biasing member converted into a force, applying load to the rotating cam member, by the cam surface opposing to a rotating direction in which the cam member is driven by the drive unit.
A sheet conveyance apparatus comprising:
The sheet conveyance apparatus comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
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Feeding path after the fixing point and up to the discharge tray or the finisher, e.g. special treatment of copy material to compensate for…:…
By rollers or balls, e.g. between rollers: between rollers or balls
Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of
Special constructions
Term end not estimated
1. Field of the Invention
The present invention relates to a sheet conveyance apparatus for conveying sheets, and an image forming apparatus equipped with the sheet conveyance apparatus.
2. Description of the Related Art
FIG. 1 is a view showing a configuration outline of a color laser printer as an example of an image forming apparatus equipped with a sheet conveyance apparatus according to one preferred embodiment of the present invention.
FIG. 2A is a perspective view showing a state where a front end and a rear end of a sheet are curled upward.
FIG. 2B is a perspective view showing a state where a front end and a rear end of a sheet are curled downward.
Now, a preferred embodiment for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a view illustrating a configuration outline of a color laser printer as an example of an image forming apparatus having a sheet conveyance apparatus according to a preferred embodiment of the present invention. As shown in FIG. 1, a color laser printer 100 is equipped with a color laser printer body 101 (hereinafter referred to as printer body), a sheet processing apparatus 25 performing processes such as sorting, stapling and punching of sheets, and a curl correcting apparatus 20 disposed between the printer body 101 and the sheet processing apparatus 25. The printer body 101 is equipped with an image forming portion 102 forming an image on a sheet S, an intermediate transfer portion 103, a fixing unit 12, and a sheet feeding apparatus 104 for feeding a sheet S to the image forming portion 102.
The image forming portion 102 is equipped with four processing stations 4Y, 4M, 4C and 4K arranged substantially horizontally for forming toner images of four colors, which are yellow (y), magenta (m), cyan (c) and black (k). The image forming portion 102 is also equipped with four scanner units 1Y, 1M, 1C and 1K.
The processing station 4Y is equipped with a photosensitive drum 2Y which is an image bearing member bearing an yellow toner image and driven by a stepping motor not illustrated. Further, the processing station 4Y is equipped with a charging roller 3Y, a developing portion 5Y, and a cleaner portion 6Y for cleaning the photosensitive drum 2Y. The charging roller 3Y, the developing portion 5Y, the cleaner portion 6Y and so on are arranged in the circumference of the photosensitive drum 2Y respectively along a direction of rotation of the photosensitive drum 2. The processing stations 4M, 4C and 4K have a similar configuration as the above-described processing station 4Y, except for the difference in toner color.