An example laser assembly for a laser printer may include a plurality of lasers to emit respective photons; a prism to redirect the respective laser beams emitted from the plurality of lasers toward a collimator lens of the laser printer to generate a photon beam; and one or more processors to: determine a timing schedule for individually activating the plurality of lasers based on a resolution setting of the laser printer, and when printing at a resolution corresponding to the resolution setting, control activation of each of the plurality of lasers to emit the respective photons according to the timing schedule to form the photon beam.

An example laser assembly for a laser printer may include a plurality of lasers to emit respective photons; a prism to redirect the respective laser beams emitted from the plurality of lasers toward a collimator lens of the laser printer to generate a photon beam; and one or more processors to: determine a timing schedule for individually activating the plurality of lasers based on a resolution setting of the laser printer, and when printing at a resolution corresponding to the resolution setting, control activation of each of the plurality of lasers to emit the respective photons according to the timing schedule to form the photon beam.

An image recording apparatus includes a light source, a switching drive circuit configured to control an electric current for causing the light source to emit a light beam, a moving part configured to move one of a recording target on which an image is to be recorded by the light beam and a light emitting position at which the light beam is emitted relative to another one of the recording target and the light emitting position, and a controller configured to control a light emission timing of the light source and a relative moving speed of the moving part based on image information. The drive circuit includes a switching circuit configured to turn on and off a switching element. The controller is configured to change a switching frequency of the switching element according to at least one of the light emission timing and the relative moving speed.

An image forming apparatus includes a unit configured to perform image forming operation, a unit board in the unit, a wiring configured to be connected to the unit board, and a control board configured to be connected to the unit board with the wiring and control the unit. The unit board includes a connector to which the wiring is to be connected. A length of the connector in a longitudinal direction of the connector is longer than a length of the unit board in a widthwise direction of the unit board, and the longitudinal direction of the connector intersects the widthwise direction of the unit board.

An image forming apparatus includes a unit configured to perform image forming operation, a unit board in the unit, a wiring configured to be connected to the unit board, and a control board configured to be connected to the unit board with the wiring and control the unit. The unit board includes a connector to which the wiring is to be connected. A length of the connector in a longitudinal direction of the connector is longer than a length of the unit board in a widthwise direction of the unit board, and the longitudinal direction of the connector intersects the widthwise direction of the unit board.

A light emitting device includes: a base plate extending in a first direction; a plurality of light emitting units arranged over a front surface of the base plate while being shifted from each other in the first direction, and each including a support body extending in the first direction and a plurality of light sources supported on the support body while being arranged in the first direction; a flow path disposed on a side of the base plate opposite to a side facing the light emitting units to feed air therethrough in the first direction; and a wire electrically connected to at least one of the plurality of the light emitting units, and disposed inside the flow path.

A light emitting device includes: a base plate extending in a first direction; a plurality of light emitting units arranged over a front surface of the base plate while being shifted from each other in the first direction, and each including a support body extending in the first direction and a plurality of light sources supported on the support body while being arranged in the first direction; a flow path disposed on a side of the base plate opposite to a side facing the light emitting units to feed air therethrough in the first direction; and a wire electrically connected to at least one of the plurality of the light emitting units, and disposed inside the flow path.

A method for laser marking plastics labels includes providing at least one plastics label to be marked. A marking laser that is a diode laser having at least one laser diode and no other laser-active medium is provided. The plastics label is marked by laser marking with the marking laser.

A system for marking a coated optical article (10) having at least one first mark (18) on a surface of a substrate (20) of the coated optical article (10) includes at least one mark (18) identification device having at least one electromagnetic radiation source (111) configured to irradiate at least a portion of the surface of the substrate (20) having the at least one first mark (18) with electromagnetic radiation (119A, 123). The at least one mark (18) identification device further includes at least one imaging device configured to receive a portion of the electromagnetic radiation (119A, 123) reflected from the surface of the substrate (20) having the least one first mark (18) and determine a position of the at least one first mark (18) on the surface of the substrate (20). The system further includes at least one marking device configured for marking the coated optical article (10) with at least one second mark (180) based on the position of the at least one first mark (18).

A system for marking a coated optical article (10) having at least one first mark (18) on a surface of a substrate (20) of the coated optical article (10) includes at least one mark (18) identification device having at least one electromagnetic radiation source (111) configured to irradiate at least a portion of the surface of the substrate (20) having the at least one first mark (18) with electromagnetic radiation (119A, 123). The at least one mark (18) identification device further includes at least one imaging device configured to receive a portion of the electromagnetic radiation (119A, 123) reflected from the surface of the substrate (20) having the least one first mark (18) and determine a position of the at least one first mark (18) on the surface of the substrate (20). The system further includes at least one marking device configured for marking the coated optical article (10) with at least one second mark (180) based on the position of the at least one first mark (18).