A liquid ejection device that ejects an ultraviolet-curable liquid includes an inkjet head, which is an ejection head that ejects the ultraviolet-curable liquid; a scanning driver that causes the inkjet head to perform a main scan; an ultraviolet generator; and a light source driver; where the ultraviolet generator irradiates the ultraviolet while moving in the main scanning direction together with the inkjet head; the ultraviolet generator includes a plurality of UV LED elements; the plurality of UV LED elements are arranged such that a light emitting range overlaps a range of the nozzle row in a sub scanning direction; and the light source driver drives the plurality of UV LED elements such that an illuminance at an end portion in the sub scanning direction is larger than an illuminance at a central portion in the light emitting range.

A liquid ejection device that ejects an ultraviolet-curable liquid includes an inkjet head, which is an ejection head that ejects the ultraviolet-curable liquid; a scanning driver that causes the inkjet head to perform a main scan; an ultraviolet generator; and a light source driver; where the ultraviolet generator irradiates the ultraviolet while moving in the main scanning direction together with the inkjet head; the ultraviolet generator includes a plurality of UV LED elements; the plurality of UV LED elements are arranged such that a light emitting range overlaps a range of the nozzle row in a sub scanning direction; and the light source driver drives the plurality of UV LED elements such that an illuminance at an end portion in the sub scanning direction is larger than an illuminance at a central portion in the light emitting range.

An image controller of an image forming apparatus is configured to generate a light emission signal for detection for forming light emission for detection, and transmit the light emission signal for detection to a laser controller through a flexible flat cable, and the laser controller is configured to cause a semiconductor laser to emit light in accordance with the light emission signal for detection, and determine, based on a PD signal output from a PD that has received a light beam, whether improper connection has occurred in the flexible flat cable.

A data generation system includes circuitry configured to generate data of sub-images constructing an image. Each of the sub-images includes at least one of image elements of the image. The image elements are aligned in a direction perpendicular to a given direction in which an image forming apparatus moves to form the image. The circuitry is configured to, when, in an attempt to add another one of the image elements adjacent to the at least one of the image elements in one of the sub-images, the other one of the image elements does not fit within the one of the sub-images, generate data of the one of the sub-images without the other one of the image elements.

A data generation system includes circuitry configured to generate data of sub-images constructing an image. Each of the sub-images includes at least one of image elements of the image. The image elements are aligned in a direction perpendicular to a given direction in which an image forming apparatus moves to form the image. The circuitry is configured to, when, in an attempt to add another one of the image elements adjacent to the at least one of the image elements in one of the sub-images, the other one of the image elements does not fit within the one of the sub-images, generate data of the one of the sub-images without the other one of the image elements.

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 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.

A computer-readable medium configured to store instructions for marking one or more items by an object marking system having a conveyor assembly, a laser etching unit, a laser distance sensor, an inductive proximity sensor, and a controller, the instructions comprising delivering, via the conveyor assembly, a container having the one or more items stored therein, the conveyor assembly having a conveyor line and a conveyor drive, the conveyor line including a first portion and a second portion, the second portion defining a marking position of the one or more items; receiving the container on the second portion of the conveyor line; detecting, via the laser distance sensor, the one or more items by measuring a distance from and differentiating between a low surface and a high surface.

A computer-readable medium configured to store instructions for marking one or more items by an object marking system having a conveyor assembly, a laser etching unit, a laser distance sensor, an inductive proximity sensor, and a controller, the instructions comprising delivering, via the conveyor assembly, a container having the one or more items stored therein, the conveyor assembly having a conveyor line and a conveyor drive, the conveyor line including a first portion and a second portion, the second portion defining a marking position of the one or more items; receiving the container on the second portion of the conveyor line; detecting, via the laser distance sensor, the one or more items by measuring a distance from and differentiating between a low surface and a high surface.

A controller which causes a light emitting element to continuously perform minute emission for a plurality of dots in a level in which toner is not attached to a non-image section on an image bearing member is provided. The controller controls a first driving current for an image section and controls a second driving current used to perform the minute emission by the light emitting element in the non-image section several times in one job. In the image section, a driving current obtained by adding the first driving current to the second driving current is supplied so that the light emitting element emits light.