Ricoh Company, Ltd.

Other

Dwango Co., Ltd.

Logic Meister Inc.

B.b.designlab Co., Ltd.

Yuji Yasuda

Shinji Kobayashi

Kan Tomita

Yoshiki Yoshida

Takashi Mama

Fumihiro Miyagawa

Takanobu Fujioka

Hidetoshi Kanai

Hiroshi Takahashi

Tetsuya Fujioka

Shigeru Suzuki

Tomotoshi Nakahara

Koichi Noguchi

Michihito Ohashi

Yoshiyuki Tanimoto

Shohei Moriyama

Shota Sakuragi

An object of the present invention is to obtain calibration data more easily in a VR (Virtual Reality) device. a user wearing a pair of VR goggles visually recognizes overlapped marker images displayed in the 360-degree VR space, and a stationary state is detected when the images for right and left eyes are overlapped, and when the stationary state satisfies a predetermined condition set in advance, one of the plurality of marker images displayed on the display in this state, which is at the center, is set as a marker image for calibration setting, calibration data of the interpupillary distance based on the marker image for calibration setting having been set is acquired, and the acquired calibration data is set as calibration data used for subsequent reproduction of images.

Computer-readable non-transitory storage medium, web server, and calibration method for interpupillary distance

A server includes a storage unit, a determination unit, and a notification unit. The storage unit stores content identification information and interrupted spot information in association with user identification information in a case where the viewing of a content during live distribution is interrupted in a first terminal logged in using the user identification information. The determination unit determines whether or not the content identification information and/or the interrupted spot information that are associated with the user identification information are stored in the storage unit in a case where the server is accessed from a second terminal logged in using the user identification information after the viewing is interrupted. In a case where such information is stored in the storage unit, the notification unit notifies the second terminal that the viewing of the content can be restarted from a viewing interrupted spot by time shift reproduction.

Server and program

A development device includes a developer bearing member including a plurality of magnetic poles for bearing a two component developer, and rotating so that the toner is supplied to a latent image bearing member, a supply and conveyance path including a member configured to convey the developer in a first direction, a regulation member configured to regulate the developer on the developer bearing member, a collection and conveyance path including a member configured to convey the developer in a second direction parallel to the first direction, arranged below the development bearing member and at a substantially same height as the supply and conveyance path, an agitation and conveyance path including a member configured to convey the developer in a third direction opposite to the first direction, arranged at a substantially same height as the collection and conveyance path, and partition members partitioning the three paths.

Development device and method capable of maintaining toner concentration at constant level without shortening life of developer, process cartridge, and imaging forming apparatus

A second material is fastened to a first material by a tapping screw having a male thread. The first material includes a hole and a concave portion around the hole. The hole has a surface in which a female thread is formed as the tapping screw is screwed in.

Structure for fastening by screw

An image forming apparatus having deflection scanning type and line type exposing devices and first and second developing devices arranged around a photoconductive element, so that parts around the photoconductive element are arranged with ease to promote the miniaturization of the apparatus. The exposing devices are selected based on the principle that the image quality is enhanced for an image of particular color and is lowered for an image of another color expected to be printed less frequently. Specifically, the deflection scanning type exposing device forms the image of the particular color, and the line type exposing device which has an inherently long optical path and simple structure forms the image of another color. Fans are provided to produce cooling air flow to the line type exposing device and to draw out toner dirt and ozone produced by the charger associated therewith. The line type exposing device and the associated charger are electrically insulated from each other and mounted in a common casing. Cleaning elements are provided to clean the charger and the line type exposing device during withdrawal of these elements from the photoconductive element.

Compact BI-color electrophotographic image forming apparatus

An optical image writing unit includes a photoconductive body, a writing device for optically writing images periodically on the photoconductive body at a writing interval t.sub.0, and a driving mechanism, operatively coupled to the writing means, for moving the photoconductive body so that the images are periodically written by the writing device at a predetermined area on the photoconductive body. The driving mechanism includes a driving motor, and a driving pulley rotated by the driving motor so that the photoconductive body is moved by rotation of the driving pulley, wherein the driving mechanism is formed so that a time in which the driving pulley makes one revolution is approximately one n-th of the writing interval t.sub.0, n being an integer.

Optical image writing unit having improved driving mechanism

A bicolor image forming apparatus having first and second exposing means and first and second developing means arranged around a photoconductive element. The first and second developing means are implemented as a deflection scanning type and a line type, respectively. Parts around a photoconductive element are arranged with ease to promote the miniaturization of the apparatus. This stems from the principle that the image quality may be enhanced for an image of particular color and lowered for an image of another color expected to be printed less frequently. Specifically, the apparatus has deflection scanning type exposing means for forming the image of particular color, and line type exposing means which has an inherently long optical path and simple structure for forming the image of another color.

Bicolor image forming apparatus for forming a bicolor image on a

An electrophotographic digital copier capable of identifying a particular color existing in a document image. The copier copies both of a bicolor document and a monocolor document in the same period of time. Even when monocolor documents and bicolor documents are to be copied together, the copier executes monocolor copy processing with the former and bicolor copy processing with the latter automatically.

Digital copier for copying a bicolored document at the same speed as a

A laser writing device for a laser printer or similar image forming equipment which steers two laser beams by one rotary polygonal mirror to a first and a second writing position defined on one or two photoconductive elements for thereby electrostatically forming latent images thereon. The first and second positions are set up to satisfy a particular condition.

Laser writing device for image forming equipment

Variable magnification optics for an image forming apparatus has a plurality of optical members, especially a first mirror and a lens located at the rear of the mirror, which are movable in association with each other and over a minimum of distance. This reduces the exclusive space which the optics occupies in the apparatus and, therefore, the overall dimensions of the apparatus. The mirror and lens which are interlocked with each other do not need independent drive lines, whereby the overall dimensions of the apparatus are further reduced.

Variable magnification optics for an image forming apparatus

An illuminating device for use with an imagewise exposing arrangement of an electrophotographic copier, electrostatic printer or similar image recording equipment. A delimited area of a glass platen is illuminated by a light source and a main reflector which is implemented by a mirror. The main reflector is located outside of one end of the delimited area. Three auxiliary reflectors are individually associated with, among four sides which are individually associated with the outer edges of the delimited area, a side facing the one end where the main reflector is provided and two facing sides which adjoin the above-mentioned side. Light reflected by the main reflector is redirected by the auxiliary reflectors toward the delimited area.

Illuminating device

A transmissive filter for correcting illuminance distribution is positioned between a lens for forming an image of an illuminated original on an image forming surface and the image forming surface, or between the original and the image forming lens, and having transparent areas for passing light therethrough and opaque areas for blocking light, for correcting illuminance irregularities on the image forming surface. The transmissive filter has lowest transmittance around an effective pupil formed by projecting an exit pupil of the lens onto the filter when the filter is disposed between the lens and the image forming surface, or lowest transmittance around an effective pupil formed by projecting an entrance pupil of the lens onto the filter when the filter is disposed between the original and the lens. The transmittance is progressively higher concentrically in a stepwise manner toward an axial center and an outer periphery of the filter.

Transmissive filter for correcting illuminance distribution

An illuminating device for uniformly illuminating a planar object has a single light source and a reflecting mirror. The planar object is illuminated by light reflected from the reflecting mirror. The reflecting mirror has a reflecting surface shaped to cause the reflected light to uniformly illuminate the planar object dependent on whether the planar object is illuminated directly or through a transparent plane-parallel plate such as a glass plate, or dependent on the type of the light source.

A flash lamp type device for illuminating an original document insures safety operation by alerting an operator, by an alarm, display and others, to the breakage of a glass platen and/or the open position of a protective cover which may occur while the voltage charge in a capacitor is higher than any desired voltage. A trigger circuit associated with a trigger wire is disenabled by sensing the breakage of a glass platen and/or the open position of the protective cover.

Growing community of inventors

Tokyo, Japan

Yuji Yasuda