| Patent application number | Description | Published |
|---|
| 20090290200 | DOCUMENT READ APPARATUS AND IMAGE FORMING APPARATUS - The document read apparatus according to the present invention has a light source unit that includes a linear first light and second light sources, both light sources aligned parallel to the sub scanning direction (moving direction). When the light source unit is scanning a book document in a second region shifted toward a side of the first light source from a center position for emitting light to the center of the document, a light quantity of the second light source becomes larger than a light quantity of the first light source. When the light source unit is scanning the book document in a third region shifted toward a side of the second light source from the center position, the light quantity of the first light source becomes larger than the light quantity of the second light source. A sum of both light quantities is controlled to be constant. | 11-26-2009 |
| 20100124439 | ILLUMINATING DEVICE, IMAGE-READING APPARATUS, AND IMAGE-FORMING EQUIPMENT - An embodiment of the present invention provides an illuminating device that is disposed in an image-reading apparatus and image-forming equipment, comprising: a light-source portion on one side; a light-source portion on the other side; and a long translucent light-guiding member having a light-discharging face long in a longitudinal direction thereof, and guiding light derived from the one light-source portion from one end face in the longitudinal direction, and light derived from the other light-source portion from the other end face in the longitudinal direction so that the guided light is irradiated to an object through the long light-discharging face; wherein the one and the other light-source portions are arranged such that positions of optical axes thereof differ from each other. | 05-20-2010 |
| 20100208306 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, AND IMAGE PROCESSING APPARATUS - In one embodiment, image reading apparatuses | 08-19-2010 |
| 20100245944 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS - In regard to a secured original method, an image reading apparatus provided in an image forming apparatus reads a first original guide using an original reading portion and, based on a reading result thereof, changes a reading position of an adjustment sheet in a main scanning direction to enable detection of a difference between a brightness of the first original guide and a brightness of the adjustment sheet. In regard to a moving original method, the image reading apparatus reads a reading member using the original reading portion and, based on a reading result thereof, changes a reading position of an adjustment sheet in a main scanning direction to enable detection of a difference between a brightness of the reading member and a brightness of the adjustment sheet. | 09-30-2010 |
| 20100290095 | LIGHT SOURCE APPARATUS, LIGHT IRRADIATING APPARATUS PROVIDED WITH SAME LIGHT SOURCE APPARATUS, IMAGE READING APPARATUS PROVIDED WITH SAME LIGHT IRRADIATING APPARATUS, AND IMAGE FORMING APPARATUS PROVIDED WITH SAME IMAGE READING APPARATUS - In one embodiment of a semiconductor apparatus of the present invention, a plurality of light-emitting elements provided with a light-emitting face are disposed at intervals in a line on a surface of a substrate, and serve as a light source apparatus that emits irradiating light forward from the light-emitting face along the surface of the substrate, and on a forward side of the light-emitting face in the surface of the substrate, a light reflection suppression area is formed extending forward with a width less than the width of the light-emitting face from a lower edge of the light-emitting face. | 11-18-2010 |
| 20110164413 | ILLUMINATING DEVICE, IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS - An illuminating device ( | 07-07-2011 |
| 20110164899 | ILLUMINATING DEVICE, IMAGE-READING APPARATUS COMPRISING THE ILLUMINATING DEVICE, AND IMAGE-FORMING APPARATUS COMPRISING THE IMAGE-READING APPARATUS - An illuminating device includes a light-emitting element that is mounted on a base material and a light-guiding member that guides light from the light-emitting element to an irradiation target, and illuminates the irradiation target with the light transmitted through the light-guiding member. The light-guiding member includes an extending portion that extends from the surface of the base material on which the light-emitting element is mounted to a left side end portion of the base material so as to cover the left side end portion. An image-reading includes this illuminating device. Image-forming apparatus includes this image-reading apparatus. | 07-07-2011 |
| 20110181921 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS INCUDING THE SAME - An image reading apparatus of the present invention includes a photoelectric transducer that performs reading scanning along a main scanning line and reads an original, the image reading apparatus obtaining a white shading level of pixels based on an output level of the photoelectric transducer obtained when a reference white is read, obtaining a black shading level of the pixels based on an output level of the photoelectric transducer obtained when a black reference is read or obtained in a dark condition, and correcting the output level of the photoelectric transducer obtained when an original image is read with the use of the white shading level and the black shading level, and the image reading apparatus further comprising a correction unit that obtains a variation amount of the white shading level between a pixel and other pixels in the vicinity of that pixel for each of pixels on the main scanning line, determines whether the variation amount exceeds a pre-set threshold value, and when the correction unit determines that the variation amount exceeds the threshold value, corrects the black shading level of the pixel subject to that determination to increase the black shading level. | 07-28-2011 |
