Patent application number | Description | Published |
20080204841 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a deflecting unit, a first sensor, and a modulating system. The deflecting unit deflects a plurality of beams in a main scanning direction to a writing area of a surface to be scanned for scanning the writing area. The first sensor detects a beam to be incident on a point on a first side of the writing area, and outputs a signal in response to detected beam. The modulating system modulates the beams in synchronization with the signal output from the first sensor. | 08-28-2008 |
20080218829 | OPTICAL SCANNING APPARATUS AND IMAGE FORMING APPARATUS - In an optical scanning apparatus, an aperture is provided between a semiconductor laser in a light source unit and an oscillating mirror, and between a cylindrical lens and the oscillating mirror. When a light beam from the semiconductor laser comes into an reflection surface of the oscillating mirror, the optical scanning apparatus is configured to limit a beam width of the light beam to a width appropriate to the reflection surface, and then to ensure an irradiation position of the light beam in a main-scanning direction to come into the reflection surface of the oscillating mirror, by causing the light beam to pass through an opening of the aperture. | 09-11-2008 |
20090073523 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - In an optical scanning device, a light-source driving unit drives a light source to modulate a light beam in units of single dot, a deflecting unit deflects the light beam, and a scanning optical system guides the deflected light beam to a scanning surface having an active writing area for forming an image. A static beam spot size, which is a beam spot size of the light beam on the scanning surface when the light beam passes a predetermined image height, is set such that a scanning beam spot size, which is a beam spot size of the light beam on the scanning surface when the light beam is moved to scan during the light beam exposes a single dot, is kept substantially constant. | 03-19-2009 |
20090074459 | Optical Scanning Device and Image Forming Apparatus - A common photodetecting unit detects a plurality of beams scanned by a plurality of polyhedral reflection mirrors provided in a multiple stages with a common rotation axis, and generates a synchronization detection signal based on detected beams. The reflection mirrors make a predetermined angle θ1 in a direction of rotation of the reflection mirrors. When time between two consecutive synchronization detection signals on a time line generated by the common photodetecting unit is ti, where i is a positive integer equal to or smaller than number of split beams, at least one of ti is different from others. | 03-19-2009 |
20090201358 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a light source; a light source driving unit configured to modulate/drive the light source; a pulse width information holding unit configured to hold pulse width information items of predetermined pixels corresponding to scanning positions on a scan target surface; a deflecting unit including a reflection surface configured to deflect/scan a light beam from the light source; and a scan-imaging optical system configured to image the light beam deflected by the deflecting unit on the scan target surface. The pulse width information holding unit holds the pulse width information items which cancel out deviations of main scanning beam spot diameters among the scanning positions on the scan target surface; and the light source driving unit drives the light source based on the pulse width information items held by the pulse width information holding unit. | 08-13-2009 |
20100033487 | DISPLAY DEVICE, CONTROL METHOD FOR THE SAME, AND INFORMATION STORAGE MEDIUM - To provide a display device for enabling preferable Japanese hyphenation while suppressing restriction due to a character code system. A font data memory unit stores font data which contains a plurality of font records each containing font information for displaying a character and line feed control information for controlling line feed conducted before and/or after the character. A character string display unit displays a character string based on the font information relevant to all or some of the plurality of font records. A line feed control unit determines a line feed position in the character string being displayed by the character string display unit based on line feed control information relevant to characters included in the character string. | 02-11-2010 |
20100091342 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - A first main-scanning-position correction unit divides a surface to be scanned into first areas in a main scanning direction into areas, sets a separate clock-pulse timing for first area, and corrects a main-scanning position error. A second main-scanning-position correction unit divides the surface into second areas in the main scanning direction based on first-scanning-position correction data, sets a separate clock-pulse timing for each second area, and corrects the main-scanning position error. | 04-15-2010 |
20130038523 | Character Input Device, Character Input Device Control Method, And Information Storage Medium - Methods and apparatus provide for displaying a plurality of character key images in a first display area on the computing device, each character key image representing and being associated with at least one of the character groups, each character group including a plurality of characters; and displaying, in a case where one of the character key images is selected by a user of the computing device, a plurality of input candidate characters in a second display area on the computing device, the plurality of input candidate characters including at least some of the plurality of characters in the character group associated with the selected one of the character key images, the second display area being set in a partially overlapping manner over the first display area. | 02-14-2013 |