Brother Kogyo Kabushiki-Kaisha

Ryota Kato

Yasuo Tamaru

Jun Mihara

Koji Ito

Yutaka Hattori

Taizo Matsuura

Shogo Mori

Shougo Sato

Kiyotaka Ohara

Masashi Suzuki

Toshio Sakai

Hidenori Hisada

Yukimasa Yoshida

An optical scanner includes a light source, optical deflector, mirror, first photosensitive drum, and second photosensitive drum. The light source emits a first light beam and a second light beam. The optical deflector deflects the first light beam and the second light beam. The mirror has a reflecting part that reflects the deflected first light beam and a passing part that passes the deflected second light beam. The passing part is displaced from the reflecting part. The first photosensitive drum performs a development with a first toner having a first color. The reflected first light beam scans the first photosensitive drum in a main scanning direction. The second photosensitive drum performs a development with a second toner having a second color different from the first color. The passed second light beam scans the second photosensitive drum in the main scanning direction. The first photosensitive drum and second photosensitive drum are arranged in a sub scanning direction orthogonal to the main scanning direction.

Optical scanner

An scanning unit scanner includes a light source and a polygon mirror unit. A front-to-rear rib is disposed between the light source and the polygon mirror unit and near the polygon mirror unit. An input side opening having a slit shape is formed as a cutout in the top edge of the front-to-rear rib. When laser light from the light source passes through the input side opening, the input side opening restricts the width of the light in a main scanning direction.

Optical scanner and image-forming device

There is provided an information processing device, comprising: a display unit configured to display at least one of a plurality of data files; an information providing unit configured to transmit, to a host computer, first information enabling a client device accessing the host computer to display information contained in the first information; a display switch unit configured to switch onscreen representation on the display unit between images corresponding to the plurality of data files; and a data changing unit configured to transmit, to the host computer, second information concerning an image corresponding to one of the plurality of data files currently displayed on the display unit in response to a fact that the onscreen representation on the display unit is switched.

Information processing device

An optical scanning device is configured to cause a light beam to scan a photosensitive drum to form a latent image on the photosensitive drum. The optical scanning device includes light emitting units configured to emit light beams and a light deflecting unit having deflecting surfaces and being configured to cause the light beams emitted from the light emitting units to reflect at the deflecting surfaces and deflect and scan in a main scanning direction. Also, the device includes a lens disposed between the light emitting units and the light deflecting unit, the lens being configured to cause the light beams emitted from the light emitting units to be directed along the main scanning direction to the deflecting surfaces, and an aperture member disposed between the lens and the light deflecting unit, and having apertures formed in line in a sub scanning direction perpendicular to the main scanning direction.

Optical scanning device and image forming apparatus

A light source device and an exposure device are disclosed. A light source device includes: a semiconductor laser; a coupling lens; a holder; a sheet-metal member and a photopolymerizable resin. The coupling lens converts laser light from the semiconductor laser to a light flux. The coupling lens has an optical axis. The sheet-metal member holds the semiconductor laser and the coupling lens. The photopolymerizable rein is cured to fix the coupling lens on the sheet-metal member. An exposure device for forming an electrostatic latent image by scanning light on a photosensitive body includes: a light source device having a semiconductor laser; a coupling lens, a sheet-metal member and a photopolymerizable resin, a deflector and a scanning lens.

Light source device and manufacturing method thereof

An optical scanner used for an image-forming device to form a color image includes a plurality of photosensitive drums for superimposing a developer image formed on each of the plurality of photosensitive drums. The optical scanner includes a casing, a plurality of light sources, a deflector, an optical system, and a storage device. The plurality of light sources is provided in a one-to-one correspondence with the plurality of photosensitive drums. Each of the plurality of light source emits a laser beam. The deflector is provided in the casing for deflecting the laser beam. The optical system is provided in the casing for guiding the deflected laser beam to a corresponding one of the plurality of photosensitive drums to make the laser beam scan the corresponding one of the plurality of photosensitive drums. The storage device stores a characteristic related to the laser beam scanning the corresponding one of the photosensitive drums.

Optical scanner used in color image-forming device

An optical scanner includes a frame, a light source, an optical member, and a spacer. The light source emits a light beam. The optical member is mounted on the frame to guide the light beam to a scanning target. The spacer maintains the optical member at a predetermined position with respect to the frame. The spacer is formed of a photocurable resin that is cured in response to a predetermined light having a wavelength within a prescribed range.

A light source device includes: a semiconductor laser; a coupling lens; a holder; and a photopolymerizable resin. The coupling lens converts laser light from the semiconductor laser to a light flux, the coupling lens having a first side and a second side opposite to the first side, the coupling lens having an outer peripheral surface connecting the first side and the second side. The holder holds the semiconductor laser and the coupling lens in a manner that the first side of the coupling lens confronts the semiconductor laser. A part of the photopolymerizable resin is provided between the outer peripheral surface of the coupling lens and the holder and another remaining part of the photopolymerizable resin protrudes from between the outer peripheral surface of the coupling lens and the holder in a direction defined from the first side to the second side, the photopolymerizable resin being cured to fix the coupling lens on the holder.

An optical scanner forms an electrostatic latent image on a photosensitive member by scanning the photosensitive member with a light beam. The optical scanner includes: an incident optical system which at least comprises: a light beam emission device configured to emit a light beam; and a cylindrical lens configured to condense the light beam emitted from the light beam emission device, and a scanning optical system which at least comprises: a light deflecting device configured to reflect the light beam having passed through the cylindrical lens to deflect the light beam in a main scanning direction for scanning the photosensitive member; and a scanning lens configured to focus the light beam deflected by the light deflecting device on the photosensitive member to form an electrostatic latent image thereon. The incident optical system and the scanning optical system are divided by a light shielding wall.

In an image forming apparatus, a polygon mirror, a plurality of laser generators, a first sensor, and a second sensor are disposed at a resin frame. A laser beam outputted from each of the laser generators and deflected by a deflection surface is irradiated onto a surface of a photosensitive drum to scan the surface over a scan part. The first sensor is disposed at a first position to detect a laser beam deflected by the deflection surface. The second sensor is disposed at a second position to detect a laser beam deflected by the deflection surface. A storage unit stores correspondence information indicating shift of the scan part from a reference scan part in relation to time difference between detections of the laser beam by the first and second sensor. A controller controls the laser generator to output a laser beam based on the shift of the scan part.

Image forming apparatus

An optical scanner includes a light source, a polygon mirror, an optical member, a casing, and an exit hole cover. The light source emits a light beam. The polygon mirror rotates and deflects the light beam to be scanned in a scanning direction. The optical member focuses the light beam deflected by the polygon mirror onto a scanning target. The casing houses the polygon mirror and the optical member and includes a first wall portion having a wall inner surface opposing the polygon mirror and the optical member and a wall outer surface opposing the scanning target. The first wall portion is formed with an exit hole through which the light beam is irradiated toward the scanning target. The exit hole cover is formed of a light transmissible member and is disposed on the wall outer surface to cover the exit hole.

Optical scanner and image-forming device having the same

An image-forming device has cylindrical image-carrying members, and an optical scanning unit. The cylindrical image-carrying members are in a main casing for rotating about respective rotational axes which are parallel to one another and juxtaposed in a single direction. The optical scanning unit is in the main casing and has laser generators, a rotatable polygon mirror, mirrors, and lenses. The laser generators have a one-to-one relationship to the image-carrying members to emit laser beams. The rotatable polygon mirror deflects the respective laser beams to scan the respective image-carrying members. The mirrors have a one-to-one relationship to the image-carrying members to guide the respective laser beams along respective optical paths to the respective image-carrying members. The lenses have a one-to-one relationship to the plurality of image-carrying members provided in the respective optical paths and between the respective mirrors and the respective image-carrying members.

Growing community of inventors

Nagoya, Japan

Ryota Kato