Patent application number | Description | Published |
20130135484 | IMAGE CAPTURING UNIT, COLOR MEASURING DEVICE, IMAGE FORMING APPARATUS, COLOR MEASURING SYSTEM AND COLOR MEASUREMENT METHOD - An image capturing unit includes a sensor unit that image-captures a predetermined area including a subject; and a reference chart unit that is arranged in the predetermined area and captured with the subject by the sensor unit. | 05-30-2013 |
20130208289 | COLOR MEASURING DEVICE, IMAGE FORMING APPARATUS, COLOR MEASURING METHOD, AND COLOR MEASURING SYSTEM - A color measuring device includes a unit configured to calculate a reference-value matrix for converting imaged reference RGB value of a reference color patch a reference colorimetric value of the reference color patch; a unit configured to convert a color-measurement RGB value of a color measurement object into an imaged colorimetric value of the color measurement object by using the corresponding reference-value matrix; a unit configured to select reference color patches of which the reference colorimetric values each have a close distance from the imaged colorimetric value in the predetermined color space; a unit configured to select, as selection RGB values, the imaged reference RGB values of the selected patches; a unit configured to calculate a selection-RGB-value matrix for converting the selection RGB values into the reference colorimetric values; and a unit configured to convert the color-measurement RGB value into a colorimetric value by using the selection-RGB-value matrix. | 08-15-2013 |
20130229671 | IMAGE CAPTURING UNIT, COLOR MEASURING DEVICE, IMAGE FORMING DEVICE, COLOR MEASURING SYSTEM, AND COLOR MEASURING METHOD - An image capturing unit includes a sensor section that images a predetermined range including a subject; a reference chart section that is imaged by the sensor section with the subject; and an illumination light source that illuminates the subject and the reference chart section. The illumination light source is arranged at a position where a mirror reflection region that mirror reflects light entering from the illumination light source to the sensor section is outside a region of the subject and the reference chart section. | 09-05-2013 |
20130242319 | IMAGING UNIT, COLOR MEASURING DEVICE, IMAGE FORMING APPARATUS, COLOR MEASURING SYSTEM, AND COLOR MEASURING METHOD - An imaging unit includes a frame having an opening; a sensor unit that captures, via the opening, a subject located outside the frame; a reference chart unit that is arranged on the frame and is captured by the sensor unit together with the subject; and a cover member that covers the opening. | 09-19-2013 |
20130242320 | IMAGE CAPTURING UNIT, COLOR MEASURING DEVICE, IMAGE FORMING APPARATUS, COLOR MEASURING SYSTEM, AND COLOR MEASUREMENT METHOD - An image capturing unit includes: a sensor unit that captures an image of a predetermined area including an image capture object; a reference chart portion that is disposed in the predetermined area and an image of which is captured together with an image of the image capture object by the sensor unit; an illumination light source that illuminates the image capture object and the reference chart portion; and a specular reflection preventing member that prevents that specular reflection light of light emitted from the illumination light source enters the sensor unit. | 09-19-2013 |
20130242321 | IMAGE CAPTURING UNIT, COLOR MEASURING DEVICE, IMAGE FORMING DEVICE, COLOR MEASURING SYSTEM, AND COLOR MEASURING METHOD - An image capturing unit includes a sensor unit that captures a predetermined area including a subject; a reference chart that is arranged in the predetermined area and captured together with the subject by the sensor unit; an optical path length changing member that is arranged on an optical path extending from the subject to the sensor unit and is capable of changing a length of the optical path. | 09-19-2013 |
20130242361 | IMAGE CAPTURING DEVICE, COLOR MEASURING DEVICE, COLOR MEASURING SYSTEM, IMAGE FORMING APPARATUS, AND COLOR MEASURING METHOD - An image capturing device includes a sensor unit that captures a predetermined range including a subject; a reference chart that is captured by the sensor unit together with the subject; an illumination light source that illuminates the subject and the reference chart; a lens member including one or more lenses arranged in an optical path of reflected light extending from the subject and the reference chart to the sensor unit; and a lens moving unit that moves at least one lens of the lens member so as to change a position thereof in a direction along the optical path. | 09-19-2013 |
20140139848 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM - According to an embodiment, an image forming apparatus includes: a carriage, on which a recording head is mounted, to be driven by a driving source to reciprocate; and a drive control unit that controls driving of the driving source by PWM control. The drive control unit includes a detecting unit that detects at least any one of a position and a velocity of the carriage, a calculating unit that calculates PWM command values from detection results output from the detecting unit, a storing unit that stores a maximum value and a minimum value of the PWM command values, a comparing unit that compares a difference between the maximum value and the minimum value against a predetermined threshold value, and a stop-output command unit that, when the difference between the maximum value and the minimum value exceeds the threshold value, outputs a command to stop driving of the carriage. | 05-22-2014 |
20140146103 | IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND RECORDING MEDIUM STORING AN IMAGE FORMING PROGRAM - An image forming apparatus can detect a foreign object promptly during homing operation. After starting the homing operation, the image forming apparatus determines whether or not a carriage stops moving by detecting motion or stop of the carriage until timing to change detecting when either the carriage reaches predetermined position or velocity of the carriage reaches predetermined value. If the image forming apparatus determines that the carriage stops moving, the image forming apparatus controls a main scanning motor to stop driving. After the timing to change detecting, the image forming apparatus detects load variation of the main scanning motor. If the load variation is detected, the image forming apparatus controls the main scanning motor to stop driving. | 05-29-2014 |
20140151491 | ROLLED RECORDING MEDIUM CONVEYANCE DEVICE, IMAGE FORMING APPARATUS, ROLLED RECORDING MEDIUM CONVEYANCE METHOD, AND COMPUTER PROGRAM PRODUCT - In an image forming apparatus that the present invention is concerning to, rolled paper is conveyed in a forward conveyance direction for a predetermined period of time, when it is detected that an amount of the rolled paper rolled around a core pipe equals a predetermined amount or less. On the basis of the detection result, a CPU determines the rolled state of the rolled paper with respect to the core pipe and conveys the rolled paper in the forward conveyance direction or a reverse conveyance direction according to the rolled state. | 06-05-2014 |
20140152736 | DRIVER APPARATUS, IMAGE FORMING APPARATUS, AND METHOD OF CONTROLLING DRIVER APPARATUS - A driver apparatus includes a drive unit to move a moveable unit along a given path using a drive force; a movement detector to detect movement of the moveable unit; a drive control unit to control the drive unit using a given output for a given time to drive the moveable unit; a determination unit to determine whether the movement detector detects a movement of the moveable unit for a given distance or more in a driving direction when the moveable unit is driven under a control of the drive control unit; and an abnormality detector to determine occurrence of abnormal when the determination unit determines that the moveable unit does not move the given distance or more. | 06-05-2014 |