| Patent Number |
Title Of Patent |
Date Issued |
| 7425975 |
Multi-beam image forming apparatus |
September 16, 2008 |
| A multi-beam image forming apparatus includes: first and second semiconductor laser arrays each having n laser elements; a multi-beam generation unit that generates 2n laser beams by synthesizing laser beams generated by the first and second semiconductor laser arrays; a beam detecti |
| 7343110 |
Color image forming device having a temperature detector |
March 11, 2008 |
| A color image forming device can minimize a registration error in a color image. A plurality of image forming units form the color image on a recording material. An image position detector detects a position of each patch pattern of a toner image formed on the recording material. A t |
| 7245841 |
Electrophotographic apparatus |
July 17, 2007 |
| An image detector has an I/V converter for converting, into a voltage output., a current output as a result of a photoelectric element arranged in a traveling direction of an intermediate transfer belt having received light reflected from the intermediate transfer belt and light reflecte |
| 6836278 |
Optical scanning apparatus using a plurality of laser beams |
December 28, 2004 |
| In a simultaneous multibeam scanning system, composite beams are formed by using two semiconductor laser arrays each of which can singly output a plurality of beams. An optical system is enabled to scan beams of the number, which corresponds to the sum total of output beams of each of |
| 6829265 |
Semiconductor laser array |
December 7, 2004 |
| The subject of the disclosed art is to prevent a short circuit between plural electrodes caused by soldering in the assembling process for a semiconductor laser element. The constitution for improving the subject is as follows. A semiconductor laser device comprises a semiconductor laser |
| 6825457 |
Two-dimensional beam writing position detecting device and image forming apparatus using the det |
November 30, 2004 |
| A two-dimensional beam writing position detecting device for providing an optical system for scanning on a photoconductor by laser beams emitted from a semiconductor laser to form an electrostatic latent image and arranging a plurality of the laser beams in two dimensions and slantingly |
| 6657653 |
Electric photograph system |
December 2, 2003 |
| An electric photograph system for improving non-linearities of an exposing light intensity and an operating current at a low exposing level when performing analog printing operation. A range (saturable absorber) having a saturable absorbing characteristic is provided in a part of an opti |
| 6243187 |
Polygonal mirror device |
June 5, 2001 |
| An annular groove is formed on the upper surface, or a surface C, of a rotor member. A surface D and a surface E of a rotor member, which are located closer to the center than the annular groove when radially viewed, are machined for correcting a dynamic unbalance of the rotor member. |
| 5903078 |
Rotary polygon mirror motor |
May 11, 1999 |
| A rotary sleeve 1 is integral with a rotary polygon mirror 14 forming a rotor section, one end portion of the rotary sleeve is formed into a magnet mounting section 15, on which a magnet yoke 3 and rotary magnets 4 are mounted. The rotary sleeve 1 has a bearing on its inner cylindrical |
| 5691833 |
Rotary polygon mirror device |
November 25, 1997 |
| In a rotary polygon mirror device comprising a cylinder rotatably supported for holding a polygon mirror and a casing over the outer peripheral surface of said cylinder through a predetermined gap, the thermal expansion coefficient of said casing is set for 1.2-1.6 times as large as |
| 5434695 |
Dynamic pressure bearing and rotary polygon mirror device with the bearing |
July 18, 1995 |
| A rotary polygon mirror device comprises: a rotor including a polygon mirror secured to one end face of a cylinder, a central rod secured inside said cylinder in such a manner that the central rod is extended along the axis of the cylinder, and a thrust bearing magnet secured to the end |
| 4836349 |
Clutch type tightening apparatus for allowing free adjustment of tightening force |
June 6, 1989 |
| A tightening apparatus includes a drive motor and a bit are coupled to each other by engagement of a clutch mechanism, the engagement thereof being maintained by a force of a spring one end of which is coupled to the clutch mechanism and the drive motor is released from engagement with t |
| 4556831 |
Circuit arrangement for electrical tool with clutch |
December 3, 1985 |
| In an electrical tool having a clutch for adjusting rotational torque of the driven shaft, a limit switch of double-throw type is used for detecting the state of the clutch, and a capacitor is arranged to be charged via the limit switch. In one embodiment of the instant invention, th |
