摘要:
The present invention provides a sheet conveying apparatus, and an image reading apparatus and an image forming apparatus having such a sheet conveying apparatus, in which skew correction of a sheet can be effected with high accuracy. A sheet convey means is provided at an upstream side of a skew correction means for correcting skew-feed of a sheet, and the sheet convey means is shifted by a shift means in a direction substantially perpendicular to the sheet conveying direction. A control means drives the shift means to shift the sheet convey means pinching the sheet to be skew-corrected by the skew correction means by a distance corresponding to a sheet skew amount on the basis of sheet skew amount information from a sheet skew amount detection means for detecting a skew amount of the sheet, thereby shifting the sheet in a skew correction direction.
摘要:
A sheet conveying apparatus which can correct a conveying velocity of a sheet is constructed by, a conveying unit to convey the sheet, a reader such as a CCD linear sensor for reading a fringe pattern formed on a pattern sheet while the pattern sheet is conveyed by the conveying unit, a detector to detect a conveying velocity of the pattern sheet on the basis of the pattern read by the reader, and a controller to control a conveying velocity of the conveying unit on the basis of the conveying velocity detected by the detector.
摘要:
An object of the present invention is to improve an efficiency in using bins in a sorter of an image forming system, to which a plurality of personal computers are connected. If the number of the receptacles appointed in accordance with the receptacle appointment command or the number of sets of sheets to be sorted is larger than the number of empty receptacles, offset sorting is performed in which the position, at which the recording sheets are received, is shifted in the same receptacle. If the appointed number of the receptacles or the number of sets of sheets to be sorted is smaller than the number of empty receptacles, a normal sorting process is performed in such a manner that the bins are allotted in accordance with the position of the bins appointed with the command for appointing receptacles or the number of sets of sheets to be sorted.
摘要:
An object of the present invention is to improve an efficiency in using bins in a sorter of an image forming system, to which a plurality of personal computers are connected. If the number of the receptacles appointed in accordance with the receptacle appointment command or the number of sets of sheets to be sorted is larger than the number of empty receptacles, offset sorting is performed in which the position, at which the recording sheets are received, is shifted in the same receptacle. If the appointed number of the receptacles or the number of sets of sheets to be sorted is smaller than the number of empty receptacles, a normal sorting process is performed in such a manner that the bins are allotted in accordance with the position of the bins appointed with the command for appointing receptacles or the number of sets of sheets to be sorted.
摘要:
A copying apparatus includes a first cassette for stacking recording sheets each having a protruding portion, a second cassette for stacking recording sheets having no protruding portion, a detecting unit for detecting a protruding portion of an original to be copied, and a copy unit for copying an image of an original onto the recording sheet fed from the first cassette in the case where the protruding portion of the original is detected by the detecting unit and for copying the image of the original onto the recording sheet fed from the second cassette in the case where the protruding portion of the original is not detected by the detecting unit.
摘要:
An image forming apparatus performing development using light toner of a first color and dark toner of the first color includes a control unit configured to control tone in order to set gradation characteristics of an image developed with the light toner; a determination unit configured to determine whether the gradation characteristics of the light toner image are in a desirable state as a result of the tone control by the control unit; and a shift unit configured to shift an area where mixture of the light toner with the dark toner is started, the area corresponding to the desirable state, responsive to the determination unit determining that the gradation characteristics of the light toner image are not in the desirable state.
摘要:
An image forming apparatus includes a plurality of image forming stations each having an image carrier and forming an image on the image carrier; a mark detecting unit for detecting a plurality of registration correction marks formed on a recording medium by the plurality of image forming stations; a correction mechanism for correcting a position difference between images formed by the plurality of image forming stations in accordance with a detection result by the mark detecting unit; and a controller for independently controlling an image forming operation of each of the plurality of the image forming stations so that the image density of each of the registration correction marks formed by the plurality of image forming units has a different predetermined image density.
摘要:
An image forming apparatus includes an air ejecting portion that ejects air toward a gap between the top end of a sheet having passed through a nip of the heating roller and a pressure roller, and the circumference of the heating roller. The air ejecting portion includes a plurality of air nozzles and a plurality of electromagnetic valves being respectively connected thereto and ejects air selectively from a plurality of air ejection positions arranged in the width direction perpendicular to the sheet conveying direction.
摘要:
A color image forming apparatus configured to form a combination toner pattern including a second toner image formed downstream in a conveying direction of an intermediate transfer belt on a first toner image and a third toner image formed upstream in the conveying direction of the intermediate transfer belt on the first toner image so that the second and the third toner images cover at least a portion of the first toner image.
摘要:
An image forming apparatus includes a pattern forming unit which forms a light amount adjustment pattern on an image carrier belt, a light amount control unit which controls the amount of light irradiating the image carrier belt and pattern, a detection sensor which detects reflected light amounts from the image carrier belt and pattern with respect to the irradiating light amount and stores the detection results in a storage unit, a calculation unit which calculates the correspondence between the irradiating light amount and the reflected light amounts from the image carrier belt and pattern on the basis of the detection results and stores the calculation results in the storage unit, and a light amount decision unit which decides, on the basis of the calculation results, a light amount at which the difference between the reflected light amounts from the image carrier belt and pattern exhibits a value set in advance.