There are provided a printing system, a method of generating a halftone processing rule, a method of acquiring a characteristic parameter, image processing device and method, a halftone processing rule, a halftone image, a method of manufacturing a printed material, an ink jet printing system, and a program which are capable of reducing an operation load of a user and acquiring a halftone processing rule appropriate for the printing system. A characteristic parameter acquisition chart including a pattern for acquiring characteristic parameters related to characteristics of the printing system is output, and the output characteristic parameter acquisition chart is read by image reading means. The characteristic parameters are acquired by analyzing the read image of the characteristic parameter acquisition chart, and halftone processing rules that define the processing contents of halftone processes used in the printing system are generated based on the acquired characteristic parameters.

An image forming unit forms an image based on image data. A roller conveys a sheet from a tray. A reading unit reads the sheet. A controller controls the image forming unit to form a test image on one side of the sheet, controls the roller to convey the sheet on which the test image has been formed, obtains first read data relating to a read result of a first surface of the sheet on which the test image is formed, obtains second read data relating to a read result of a second surface from the first read data and the second read data, selects read data relating to a read result relating to the test image, and controls, based on the selected read data, a density of an output image to be formed by the image forming unit.

Conveyance modes include a registration mode accompanied with skew correction and a registrationless mode unaccompanied with skew correction. When a jam occurs, the controller interrupts a job, and invokes blank-feed processing starting from a state with all sheets re-set. On invoking blank-feed processing, the controller checks the conveyance mode and recognizes the number of jams. If the conveyance mode is the registration mode and in addition the number of jams has not reached a threshold number of jams, the controller invokes blank-feed processing in the registrationless mode.

Examples of an apparatus and method for use with a printing system are described herein. A correction to be applied to a printing system during print calibration is obtained. A distortion is applied to the correction. A relationship between an expected and measured output of the printing system is determined based on the print performed at least in part on the distorted correction. The printing system is calibrated on the basis of the determined correction.

A programmable logic circuit device includes: a processor; and plural reconfiguration regions each including a circuit configured by change of connection between elements. The processor is configured to: upon detection of an abnormality while performing processing in a state in which the elements in the reconfiguration regions are connected in accordance with reconfiguration data designating connection between the elements in the reconfiguration regions, acquire reconfiguration data designating such connection between the elements that the processing being performed is not performed; and change connection between the elements in the reconfiguration regions in accordance with the designation by the acquired reconfiguration data.

An image processing apparatus includes an acquisition unit configured to acquire reference data and image data representing an inspection target image, the reference data representing a reference image that is a reference printing result, a setting unit configured to set a detection sensitivity for a plurality of defects in a printing result, a correction unit configured to correct a difference image acquired from the reference data and the image data so that a difference in the difference image that is greater than a threshold value is reduced, and a processing unit configured to inspect the inspection target image based on the detection sensitivity and the corrected difference image.

A scanner calibration system is provided. The scanner calibration system includes memory configured in a format to store therein encoded gain and offset parameters. Such a configuration reduces the amount of required memory for the scanner calibration system without a compromise of performance.

An image forming apparatus includes an image forming unit, an intermediate transfer member, a transfer member, a power source, a fixing unit, a photo sensor photosensor, and a control unit configured to perform a mode to output a test chart which is formed by transferring a plurality of test toner images from the intermediate transfer member onto a plurality of sheets of the recording material, the test chart being used to adjust the transfer voltage applied to the transfer member. The control unit is configured to adjust the transfer voltage based on a detection result of the photo sensor photosensor detecting the plurality of test toner images recovered fixed on the recording material. In a case where a jam occurred during execution of the mode, the control unit is configured to resume the mode after the jam has been recovered.

An image outputting device includes a scanning module, a storage module, an identification module, a calibration module and a printing module. The scanning module generates an image by scanning an object. The storage module stores the image. The identification module identifies a layout orientation and a text orientation of the image. The calibration module calibrates the layout orientation and the text orientation of the image according to a relation of an identification result of the identification module and a layout orientation of the printing medium. When the printing module prints the calibrated image on a printing surface of the printing medium and outputs the printing medium with the printing surface facing downwardly, the layout orientation of the printed image matches with the layout orientation of the printing medium, and the text orientation of the printed image is opposite to an medium outputting direction or arranged from proximal to distal.

An image scanning device scans one or plural document images of one or plural predetermined head pages, and a preview processing unit performs preview display of the document image(s) of the head page(s). After detecting a user operation to accept the document image on the preview display, the image scanning device scans a document image of a subsequent page to the head page(s), and the image processing unit performs the image process for the document image of the subsequent page. Further, the image processing unit performs a part or whole of the image process for the document image(s) of the head page(s) before the preview display. If a part of the image process is displayed before the preview display, the image processing unit performs a remaining part of the image process after detecting a user operation to accept the document image on the preview display.