A micro light-emitting diode (LED) display assembly includes a backplane, a passivation layer on the backplane, a micro LED on the passivation layer, and a non-transparent metal housing on the passivation layer. The housing includes a base portion on the passivation layer, a sidewall portion upwardly extending from the base portion, a cap portion connected at a top of the sidewall portion, an orifice in the cap portion, and a notch in the cap portion and adjacent to the orifice. The assembly also includes a translucent filter positioned in the notch and covering the orifice, and a pocket defined by an enclosed area in between the sidewall portion, the cap portion, the filter, and the passivation layer. The micro LED is encased within the pocket such that light transmitted from the micro LED directly hits and passes through the filter.

A light-emitting thyristor includes a first semiconductor layer of a P type, a second semiconductor layer of an N type arranged adjacent to the first semiconductor layer; a third semiconductor layer of the P type arranged adjacent to the second semiconductor layer; and a fourth semiconductor layer of the N type arranged adjacent to the third semiconductor layer. A part of the first semiconductor layer is an active layer adjacent to the second semiconductor layer. A dopant concentration of the active layer is higher than or equal to a dopant concentration of the third semiconductor layer. A thickness of the third semiconductor layer is thinner than a thickness of the second semiconductor layer. A dopant concentration of the second semiconductor layer is lower than the dopant concentration of the third semiconductor layer.

An image forming apparatus includes a photoconductive body, a light source, a lens, a light housing, a first fulcrum, a second fulcrum, a stay, and a repositioning mechanism. The lens is positioned to focus light emitted from the light source at a focal position. The light housing holds the light source and the lens. The fulcrums are positioned such that a surface of the photoconductive body is positioned at the focal position when the light housing engages the first fulcrum and the second fulcrum. The stay is positioned to support the light housing at two or more points between the fulcrums. The repositioning mechanism is coupled to the stay. The light housing presses against the fulcrums when the repositioning mechanism is in a first configuration and is spaced from the fulcrums when the repositioning mechanism is in a second configuration.

A print agent transfer assembly including a print agent transfer member to receive a first layer and a second layer of print agent, and an energy source to provide energy at a first predetermined intensity level to the first layer and to provide energy at a second, different predetermined intensity level to the second layer.

Provided is a light emitting chip C including: a substrate 80; light emitting elements each having one terminal connected to a predetermined reference potential and the other terminal, the light emitting element having a rectifying characteristic; and thyristors each connected in series with the other terminal of the light emitting elements, respectively, the thyristors being configured to make the light emitting element connected thereto emit light or increase light emission amount of the light emitting element when the thyristors turn on in an ON state.

A configuration in which print heads disposed on an upper cover and a control substrate disposed on a housing are electrically connected via cables. The cables connect the print heads and the control substrate while passing through the back side of the rotating shaft in the housing so that a part of the cables contacts the rotating shaft or a grounded metallic receiving member disposed near the rotating shaft for supporting a part of the cables.

Provided is a semiconductor light-emitting device including a plurality of nodes and a plurality of transfer diodes connecting the nodes, and gates of a shift thyristor and a light-emitting thyristor are connected to each of the nodes. Each of the transfer diodes includes a stacked structure including a first semiconductor layer of a first conductivity type provided over a semiconductor substrate, a second semiconductor layer of a second conductivity type, which is different from the first conductivity type, provided over the first semiconductor layer, a third semiconductor layer of the first conductivity type provided over the second semiconductor layer, a fourth semiconductor layer of the second conductivity type provided over the third semiconductor layer, and a fifth semiconductor layer of the first conductivity type provided over the fourth semiconductor layer, and a diode is formed by a p-n junction between the fourth and fifth semiconductor layers.

An exposure apparatus includes: a substrate that extends in a longitudinal direction intersecting with a gravity direction and has light emitting elements emitting light toward a gravity direction; a housing that extends in the longitudinal direction, to which the substrate is attached; a support section that supports both end side portions of the housing in the longitudinal direction against gravity; and a structure section having a weight that is attached to an intermediate portion of the housing in the longitudinal direction and supported by the support section in the gravity direction.

An image forming apparatus includes a photoconductor, a light emitting substrate, and imaging optical systems, wherein an optical axis of the imaging optical systems are parallel, imaging magnifications of the imaging optical systems are substantially equal for the light emitting point groups, the imaging optical systems includes a first lens array, a second lens array, and apertures, central points of the light emitting point group exist in a first plane, central points of the imaging lenses exist in a second plane, central points of the apertures exist in a third plane, central points of the imaging lenses exist in a fourth plane, the first plane forms a non-zero predetermined angle with respect to a plane perpendicular to an optical axis direction, and the angle formed with respect to the plane perpendicular to the optical axis direction is greater in the order of the first, second, third, and the fourth plane.

An exposure apparatus includes: a substrate that, extends in a longitudinal direction intersecting with a gravity direction and has light emitting elements emitting light, toward a gravity direction; a housing that extends in the longitudinal direction, to which the substrate is attached; a support section that supports both end side portions of the housing in the longitudinal direction against gravity; and a structure section having a weight that is attached to an intermediate portion of the housing in the longitudinal direction and supported by the support section in the gravity direction.