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US 6,204,932 B1Granted
Image forming apparatus
AssigneeKonica Corporation
InventorsSatoshi Haneda, Kunio Shigeta, Kiyoshi Kimura
Life of this patent
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Abstract
In an image forming apparatus, a document image is read by an image scanner and image data are applied with image processing and stored in a memory. An image correction device corrects the image data with a different correcting condition depending on whether the image data are used for a toner image on the obverse side of the sheet or for a toner image on the reverse side of the sheet. A fixing device fixes the toner images on the obverse side and the reverse side of the sheet simultaneously.
Claims25
An image forming apparatus comprising:
- an input device that inputs an output mode with respect to how images are to be formed;
- an image reader that successively reads images from at least one of single-sided documents and both-sided documents, and that produces image data corresponding to the read images;
- an image processor that processes the image data produced by the image reader;
- a memory that stores the image data processed by the image processor;
- a selector that portions out the image data in the memory into first side image data and second side image data in accordance with the output mode input by the input device;
- an image corrector that conducts a first side correction operation with respect to the first side image data to produce first side output image data, and that conducts a second side correction operation with respect to the second side image data to produce second side output image data, said second side correction operation being different from said first side correction operation;
- an image carrying member;
- an intermediate image carrying member;
- a toner image forming device that forms on the image carrying member a first side toner image based on the first side output image data and a second side toner image based on the second side output image data;
- a transfer device that:
- (i) transfers the second side toner image from the image carrying member to the intermediate image carrying member, (ii) transfers the first side toner image from the image carrying member to a first side of a recording sheet, and (iii) transfers the second side toner image from the intermediate image carrying member to a second side of the recording sheet;
- and
- a fixing device that fixes the first side toner image and the second side toner image on the recording sheet simultaneously.
10 more elements
Dependencies are inferred from the claim text.