Image reading apparatus for reading adjustment document used for image adjustment, image forming apparatus with image reading apparatus and adjustment document used in image reading apparatus

An adjustment document which is a document for image adjustment used in an image adjustment processing in an image reading apparatus, comprising:

• line images each indicating the same chromaticness in a main scanning direction and arranged in parallel in a sub scanning direction;
• and
• parameter images provided at a plurality of predetermined positions respectively spaced apart in the main scanning direction in a margin area where the line images are not provided,
• wherein the image reading apparatus includes:
• an image reader that performs an image reading processing of reading a document and generating image data while moving relative to the document in the sub scanning direction;
• an image adjuster that performs an image adjustment processing using image data generated by reading the adjustment document by the image reading processing performed by the image reader;
• an instruction receiver that receives an instruction to perform the image adjustment processing;
• and
• an execution controller that causes the image reader to perform the image reading processing of reading the adjustment document, and causes the image adjuster to perform the image adjustment processing using the image data generated by the image reading processing when the instruction to perform the image adjustment processing is received by the instruction receiver,
• wherein the parameter images indicate parameters used in a case of performing the image adjustment processing using image data corresponding to positions in the main scanning direction respectively indicated by the plurality of predetermined positions out of image data generated by reading the line images by the image reading processing, and
• wherein the execution controller causes the image reader to perform the image reading processing of reading the adjustment document, judges whether or not the respective image data generated by reading the line images and corresponding to the plurality of predetermined positions in the main scanning direction coincide with each other, selects any one of the image data judged to coincide out of the respective image data, and causes the image adjuster to perform the image adjustment processing using the selected image data and the parameter indicated by the image data generated by reading the parameter image provided at the position in the main scanning direction of the selected image data.

An image reading apparatus, comprising:

• an image reader that performs an image reading processing of reading a document and generating image data while moving relative to the document in a sub scanning direction;
• an image adjuster that performs an image adjustment processing using image data generated by reading an adjustment document, which is a document for image adjustment, by the image reading processing performed by the image reader;
• an instruction receiver that receives an instruction to perform the image adjustment processing;
• and
• an execution controller that causes the image reader to perform the image reading processing of reading the adjustment document and generating the image data, and causes the image adjuster to perform the image adjustment processing using the image data generated by the image reading processing when the instruction to perform the image adjustment processing is received by the instruction receiver,
• wherein the adjustment document includes line images each indicating the same chromaticness in a main scanning direction and arranged in parallel in the sub scanning direction, parameter images provided at a plurality of predetermined positions respectively spaced apart in the main scanning direction in a margin area where the line images are not provided, and a sub-parameter image provided at a predetermined position in a part of the margin area where the parameter images are not provided and which is not sufficient to provide the parameter image,
• wherein the parameter images indicate parameters used in a case of performing the image adjustment processing using image data generated by reading the line images by the image reading processing,
• wherein the sub-parameter image indicates a sub-parameter used to perform at least a part of the image adjustment processing using the parameters, and
• wherein the execution controller causes the image reader to perform the image reading processing of reading the adjustment document and generating the image data, judges whether or not all the image data generated by reading the parameter images coincide with each other, and causes, when judging that none of the image data coincide with each other, the image adjuster to perform at least a part of the image adjustment processing using the parameters, using the sub-parameter indicated by the image data generated by reading the sub-parameter image.

An image reading apparatus, comprising:

• an operation unit that includes a display unit on which a setting screen used to set and input execution conditions of various functional operations executable in the image reading apparatus is displayed, and is adapted to set and input the execution condition on the setting screen displayed on the display unit;
• an image reader that performs an image reading processing of reading a document and generating image data while moving relative to the document in a sub scanning direction;
• an image adjuster that performs an image adjustment processing using image data generated by reading an adjustment document, which is a document for image adjustment, by the image reading processing performed by the image reader;
• an instruction receiver that receives an instruction to perform the image adjustment processing using the execution condition set and input by the operation unit;
• and
• an execution controller that causes the image reader to perform the image reading processing of reading the adjustment document and generating the image data, and causes the image adjuster to perform the image adjustment processing using the image data generated by the image reading processing and the execution condition of the image adjustment processing set and input by the operation unit when the instruction to perform the image adjustment processing is received by the instruction receiver,
• wherein the adjustment document includes line images each indicating the same chromaticness in a main scanning direction and arranged in parallel in the sub scanning direction, parameter images provided at a plurality of predetermined positions respectively spaced apart in the main scanning direction in a margin area where the line images are not provided, and a sub-parameter image provided at a predetermined position in a part of the margin area where the parameter images are not provided and which is not sufficient to provide the parameter image,
• wherein the parameter images indicate parameters used in a case of performing the image adjustment processing using image data generated by reading the line images by the image reading processing,
• wherein the sub-parameter image indicates a sub-parameter used to perform at least a part of the image adjustment processing using the parameters and coinciding with at least some of elements indicated by the parameters,
• wherein the execution controller causes the image reader to perform the image reading processing of reading the adjustment document and generating the image data, judges whether or not all the image data generated by reading the parameter images coincide with each other, and causes, when judging that none of the image data coincide with each other, the sub-parameter indicated by image data generated by reading the sub-parameter image to be displayed within the setting screen displayed on the display unit and used to set and input the execution condition of the image adjustment processing, and
• wherein the execution controller causes the image adjuster to perform the image adjustment processing using an execution condition corresponding to the set and input parameter when the execution condition of the image adjustment processing corresponding to the parameter is set and input on the displayed setting screen by the operation unit and an instruction to perform the image adjustment processing using the set and input execution condition is received by the instruction receiver.