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US 6,618,577 B2Granted
Sheet guiding device with electromagnetic shield plate serving as one guide surface and image forming apparatus including the same
AssigneeCanon Kabushiki Kaisha
InventorKinya Omura
Life of this patent
Estimating the term…
Abstract
A sheet guiding device has an electromagnetic shield plate disposed between a re-transportation path for a sheet material and a video controller board, with the bottom surface of the electromagnetic shield plate being used as a sheet guiding surface and a portion of the sheet guiding surface protruding towards the re-transportation path to form a guiding section made of metal and integrally formed with the electromagnetic shield plate.
Claims17
A sheet guiding device for guiding a sheet material, the sheet guiding device comprising:
- an electromagnetic shield plate which is disposed between an electrical member and a sheet transportation path, a sheet-transportation-path-side surface of the electromagnetic shield plate forming a sheet guiding surface for guiding the sheet material through a guiding section,
- wherein an integral portion of said electromagnetic shield plate protrudes into the sheet transportation path, thereby narrowing a height of the sheet transportation path.
An image forming apparatus comprising:
- an image forming section which forms an image on a surface of a sheet material;
- a sheet transportation path used to guide the sheet material upon which an image has been formed by the image forming section;
- and
- a sheet guiding device comprising an electromagnetic shield plate disposed between an electrical member and the sheet transportation path, a sheet-transportation-path-side surface of the electromagnetic shield plate forming a sheet guiding surface for guiding the sheet material through a guiding section, wherein the electromagnetic shield plate protrudes into the sheet transportation path, thereby narrowing a height of the sheet transportation path.
1 more element
An image forming apparatus comprising:
- image forming means for forming an image on the sheet material to be transported;
- an oblique movement correcting guide which restricts a side edge of a sheet material in a sheet transportation path;
- means for transporting the sheet from the image forming means and through the sheet transportation path while pushing the sheet against said oblique movement correcting guide;
- an electromagnetic shield plate which covers an electrical member, said electromagnetic shield plate having a front surface facing the electrical member and a back surface facing away from the electrical member, wherein the back surface of the electromagnetic shield plate is a first guiding surface which guides one of the surface sides of the sheet material as it is transported through the sheet transporting path;
- and
- a second guiding surface, which opposes the first guiding surface, for guiding the sheet, wherein the first guiding surface and the second guiding surface form the sheet transportation path between them and the first guiding surface has a protruding portion which protrudes towards the second guiding surface to thereby narrow the sheet transportation path formed between the first guiding surface and the second guiding surface.
3 more elements
Dependencies are inferred from the claim text.