Sony Corporation

Fuji Xerox Co., Ltd.

Takeshi Tanimoto

Yoshio Suzuki

Yoshiki Shirochi

Sou Miyasaka

Koji Miura

Kazumasa Kaneda

Keita Mori

Kenji Yagi

A display apparatus of the present disclosure includes: a light source section that outputs a light beam of a plurality of predetermined colors; an image data processing section that generates a sub-frame image of a single color by dividing a unit frame into a plurality of sub-frames, on the basis of an input image signal, and generates a sub-frame image of a mixed color based on the image signals of at least two colors; a display device that modulates the light beam based on the sub-frame images generated by the image data processing section; and a light source control section that causes the light source section to output the light beam of the color corresponding to the sub-frame image of the single color, in a selected period, and causes the light source section to output the light beams of the at least two colors sequentially.

Display apparatus

Spherical aberration, astigmatism and coma can be corrected by a single liquid-crystal optical element, the electrode patterns in the optical element can be simplified, and the optical element can be controlled in a simple manner. The present invention provides an optical pickup including a light source to emit a light beam of a predetermined wavelength, an objective lens to focus the light beam emitted from the light source onto the signal recording surface of an optical disk, a liquid-crystal optical element provided between the light source and objective lens to correct spherical aberration, astigmatism and coma by varying the refractive index thereof, and a photodetector to detect return light from the signal recording surface of the optical disk. The liquid-crystal optical element has a pair of electrodes disposed opposite to each other in the optical-axial direction, and the liquid-crystal optical element has a pattern to correct spherical aberration, pattern to correct astigmatism and a pattern to correct coma, and the patterns are disposed dispersedly on the pair of electrodes to divide the electrode pair into a plurality of zones, and the plurality of zones resulted from division of the electrode pair by the patterns are used in combination to correct the spherical aberration, astigmatism and coma.

Optical pickup and optical disk drive using same

In an optical pickup for irradiating a laser beam emitted from a photoemission element on a disk-like recording medium through an objective lens, there is provided a diffraction element including a first region for splitting the laser beam emitted from the photoemission element into a main beam and a pair of first sub-beams and a second region for splitting the laser into a main beam and a pair of second sub-beams, wherein a following relation hold or approximately hold: (2n&#x2212;1)&#xd7;P/2, where D is a distance between a spot center of the first sub-beam and a spot center of the second sub-beam, the spots being formed on a recording surface of the disk-like recording medium spaced in a substantially radial direction of the disk-like recording medium, n is a natural number, and P is a track pitch of the disk-like recording medium.

Optical pickup and disk drive apparatus

An image forming apparatus that conveys a long belt-like recording sheet on a conveyance path and forms an image on the recording sheet when the recording sheet passes through an image forming section, the image forming apparatus comprising: a recording medium drive component that is disposed downstream of the image forming section in a conveyance direction on the conveyance path and conveys the recording medium; a tension imparting component that is disposed upstream of the image forming section in the conveyance direction on the conveyance path and imparts tension to the recording medium; and a control unit which, when a printing operation for forming an image is started, drives the tension imparting component to impart tension to the recording medium between the recording medium drive component and the tension imparting component, and starts the recording medium conveyance operation.

Image forming apparatus and image forming method

An apparatus and a method for forming an image is provided that uses a contact type transfer member and a retract mechanism so as to transfer a toner image onto a continuous medium, performs the transfer process stably onto various continuous media and reduces unnecessary transfer of toner from the contact type transfer member to the continuous medium. The unnecessary transfer of toner may be caused by a concentration of contact stress when the contact type transfer member (), which is moved by a retract mechanism, contacts with the continuous medium (). To dissipate the contact stress, the transfer member () contacts with the continuous medium () while the continuous medium () is steadily conveyed and the transfer member is steadily rotated. Accordingly, the transfer of the toner from the transfer member () to the continuous medium () may be reduced. Furthermore, the friction at the contact line may be reduced and thus staining of the continuous medium may be further reduced.

Image forming method and image forming apparatus

Provided is a projection type liquid crystal display apparatus, which can improve black-level display and thus can display a higher-contrast image as compared to the related art. An optical compensator is located on the light exit side with respect to the liquid crystal display device so as to compensate for the optical phase difference caused by liquid crystal molecules in a light-entry-side region of the liquid crystal layer. As the optical compensator is located on the light exit side with respect to the liquid crystal display device, birefringence, caused by the liquid crystal molecules present in the light-entry-side region, is compensated for without being influenced by a microlenses provided in the liquid crystal plane. Consequently, the apparatus can improve the black-level display and thus can display a higher-contrast image as compared to the related art. Further, a phase difference caused by the birefringence of the nematic liquid crystal molecule is compensated for by using a substance having properties optically opposite to the positive crystal, namely, a substance having birefringence equivalent to birefringence of a negative crystal.

Apparatus and method for displaying image

A clearance regulating amount L by a clearance regulating member which is provided above a developing roller on a side closer to a photosensitive drum is determined at a size not greater than a height T of a developer at a magnetic pole just downstream of the clearance regulated position. Thus, the scattering of the developer from a developing unit is significantly reduced.

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Saitama, Japan

Takeshi Tanimoto