Abstract:
An optical scanning device includes a light source which emits a light beam, a deflector, an incident optical system and one scanning lens. The deflector reflects and deflects/scans the light beam emitted from the light source. The scanning lens includes a first face facing the deflector and a second face on an opposite side to the first face, and performs imaging of the deflected/scanned light beam on a surface to be scanned. In a main scanning cross section, when an angle relative to an optical axis of an incident light beam which enters the scanning lens from the first face is θin, and an angle relative to an optical axis of an outgoing light beam which is output from the second face toward the surface to be scanned is θout, in an entire scanning region, a condition of 0.9
Abstract:
In a collimator lens, in a case where divergent light emitted from a position P1 at a distance S1 from a second face enters the second face and imaging is performed at a position P2 at a distance S2 from a first face, in a temperature range of 0° C. to 60° C. and in a range of the emission wavelength of the light source which changes within the temperature range, and when a minimum value of a wavefront aberration of an image, which is generated at the position P2 by the divergent light emitted from the position P1 in a range of 0
Abstract:
An inkjet recording apparatus includes a recording head including a plurality of nozzles for ejecting ink, a conveyor belt that has a plurality of apertures and conveys recording media one by one, a control unit, an ink receiver, and a pipe-shaped ink discharge flow path. The control unit controls drive of the recording head and the conveyor belt to perform flushing, in which the ink is ejected from the nozzle of the recording head to pass through one of the apertures, at a timing different from a timing contributing to image recording. The ink receiver is disposed to face the recording head sandwiching the conveyor belt therebetween, to receive the ink after passing through the aperture when the flushing is performed. The ink discharge flow path is connected to the ink receiver. When the flushing is performed, a predetermined amount of liquid is stored in the ink receiver.
Abstract:
A housing includes a base portion for installation of an optical beam emission unit, a light guiding unit, and a deflection unit, and a cover portion that includes an indented heat emission channel that transmits heat in an inner portion of the housing to a fluid.
Abstract:
An optical scanning device includes a light source which emits a light beam, a deflector, an incident optical system and one scanning lens. The deflector reflects and deflects/scans the light beam emitted from the light source. The scanning lens includes a first face facing the deflector and a second face on an opposite side to the first face, and performs imaging of the deflected/scanned light beam on a surface to be scanned. In a main scanning cross section, when an angle relative to an optical axis of an incident light beam which enters the scanning lens from the first face is θin, and an angle relative to an optical axis of an outgoing light beam which is output from the second face toward the surface to be scanned is θout, in an entire scanning region, a condition of 0.9
Abstract:
In a first scanning lens, a first lens section and a second lens section are vertically overlapped in such a manner as to separate lens centers thereof by a first distance. In a second scanning lens, a third lens section and a fourth lens section are vertically overlapped in such a manner as to separate lens centers thereof by a second distance equal to the first distance. A vertical positional relationship of the first lens section with the second lens section is the same as a vertical positional relationship of the third lens section with the fourth lens section. Further, a separating direction of a lens center of the first lens section from that of the second lens section is opposite to a separating direction of a lens center of the third lens section from that of the fourth lens section.
Abstract:
In a first scanning lens, a first lens section and a second lens section are vertically overlapped in such a manner as to separate lens centers thereof by a first distance. In a second scanning lens, a third lens section and a fourth lens section are vertically overlapped in such a manner as to separate lens centers thereof by a second distance equal to the first distance. A vertical positional relationship of the first lens section with the second lens section is the same as a vertical positional relationship of the third lens section with the fourth lens section. Further, a separating direction of a lens center of the first lens section from that of the second lens section is opposite to a separating direction of a lens center of the third lens section from that of the fourth lens section.
Abstract:
A light scanning device includes a deflection unit, a first imaging lens, and a second imaging lens. The first imaging lens has a bottom surface adhesively secured to a housing via a plurality of adhesion portions. The second imaging lens has a bottom surface adhesively secured to a top surface of the first imaging lens via a plurality of adhesion portions. The plurality of the adhesion portions interposed between the first imaging lens and the housing are symmetrically located with respect to a center position of the first imaging lens in a main-scanning direction. The adhesion portions interposed between the first imaging lens and the second imaging lens are symmetrically located with respect to the center position of the first imaging lens in the main-scanning direction, and are located outside in the main-scanning direction with respect to the adhesion portions between the first imaging lens and the housing.
Abstract:
An optical scanning device includes a light source unit, a deflector, and a scanning lens. The deflector reflects first and second light beams emitted from the light source such that the beams scan a scanned surface in main scanning direction. The scanning lens is disposed between the deflector and the scanned surface, includes incident and emission surfaces, and focuses the first and second light beams on the scanned surface. At least one of incident and emission surfaces is an optical refractive surface in which first and second refractive surfaces through which the first and second light beams pass respectively are arranged in alignment in the sub scanning direction. An interval between a first generatrix of the first refractive surface and a second generatrix of the second refractive surface in the sub scanning direction increases from a center portion toward end portions of the scanning lens in the main scanning direction.
Abstract:
An optical scanning device includes a light source unit, a deflector, and a scanning lens. The deflector reflects first and second light beams emitted from the light source such that the beams scan a scanned surface in main scanning direction. The scanning lens is disposed between the deflector and the scanned surface, includes incident and emission surfaces, and focuses the first and second light beams on the scanned surface. At least one of incident and emission surfaces is an optical refractive surface in which first and second refractive surfaces through which the first and second light beams pass respectively are arranged in alignment in the sub scanning direction. An interval between a first generatrix of the first refractive surface and a second generatrix of the second refractive surface in the sub scanning direction increases from a center portion toward end portions of the scanning lens in the main scanning direction.