An information processing apparatus is configured to perform: acquiring target image data representing a target image made up of a plurality of partial images; determining whether a specific condition is met for each of the plurality of partial images; selecting a direction-determining method of a printing direction for each of the plurality of partial images in accordance with a determination result; determining whether the selected direction-determining method matches a correct method; and adjusting condition data for controlling a printing device so as to increase selectability of the correct method in response to determining that the selected direction-determining method differs from the correct method. The specific condition indicates that an image evaluation value be greater than or equal to a threshold. The image evaluation value represents an expected color difference between a first image printed by a first-directional partial print and a second image printed by a second-directional partial print.

An information processing apparatus is configured to perform: acquiring target image data representing a target image made up of a plurality of partial images; determining whether a specific condition is met for each of the plurality of partial images; selecting a direction-determining method of a printing direction for each of the plurality of partial images in accordance with a determination result; determining whether the selected direction-determining method matches a correct method; and adjusting condition data for controlling a printing device so as to increase selectability of the correct method in response to determining that the selected direction-determining method differs from the correct method. The specific condition indicates that an image evaluation value be greater than or equal to a threshold. The image evaluation value represents an expected color difference between a first image printed by a first-directional partial print and a second image printed by a second-directional partial print.

An example device including a laser source for generating a laser pulse, a scanner for mounting the laser source, and a motion detector for detecting a motion of the scanner when the laser pulse scans an object. The motion detector includes an optical sensor for generating an optical signal based on the motion of the scanner, and a controller. The controller determines a movement of the scanner and disables the laser source when the scanner ceases to move.

An example device including a laser source for generating a laser pulse, a scanner for mounting the laser source, and a motion detector for detecting a motion of the scanner when the laser pulse scans an object. The motion detector includes an optical sensor for generating an optical signal based on the motion of the scanner, and a controller. The controller determines a movement of the scanner and disables the laser source when the scanner ceases to move.

An optical scanning apparatus, an image projecting apparatus, and a mobile object. The optical scanning apparatus includes a light source to emit light, a light deflector to deflect the light emitted from the light source at least in a sub-scanning direction to perform optical scanning on a scan region, a light receiver to receive, within a predetermined range in the sub-scanning direction, the light used for optical scanning performed by the light deflector, and a controller to control the light deflector based on a number of times of light reception of the light receiver at a plurality of positions in the sub-scanning direction within the predetermined range. The image projecting apparatus includes the optical scanning apparatus, and a projection optical system configured to project light emitted from the optical scanning apparatus to the scan region.

An optical scanning apparatus, an image projecting apparatus, and a mobile object. The optical scanning apparatus includes a light source to emit light, a light deflector to deflect the light emitted from the light source at least in a sub-scanning direction to perform optical scanning on a scan region, a light receiver to receive, within a predetermined range in the sub-scanning direction, the light used for optical scanning performed by the light deflector, and a controller to control the light deflector based on a number of times of light reception of the light receiver at a plurality of positions in the sub-scanning direction within the predetermined range. The image projecting apparatus includes the optical scanning apparatus, and a projection optical system configured to project light emitted from the optical scanning apparatus to the scan region.

There is provided an image processing apparatus provided with a printer driver comprising an input interface that accepts a print request, at least one memory device that stores a set of instructions, and at least one processor that executes the set of instructions to detect an orientation of a color change in a gradation included in the print request, determine a rendering method of the gradation based on the detected orientation of the color change, and instruct a printing apparatus to perform printing in accordance with the determined rendering method.

There is provided an image processing apparatus provided with a printer driver comprising an input interface that accepts a print request, at least one memory device that stores a set of instructions, and at least one processor that executes the set of instructions to detect an orientation of a color change in a gradation included in the print request, determine a rendering method of the gradation based on the detected orientation of the color change, and instruct a printing apparatus to perform printing in accordance with the determined rendering method.

An image reading device includes at least one reference portion that is provided in a reading area of a reading unit provided with a moving mechanism, a memory unit that stores, as an initial value, positional data of the reference portion that is read by the reading unit, an acquisition unit that reads the positional data of the reference portion and acquires a displacement amount of the read positional data from the initial value, and an error handling unit that performs error handling when the displacement amount exceeds a predetermined value.

An image reading device includes at least one reference portion that is provided in a reading area of a reading unit provided with a moving mechanism, a memory unit that stores, as an initial value, positional data of the reference portion that is read by the reading unit, an acquisition unit that reads the positional data of the reference portion and acquires a displacement amount of the read positional data from the initial value, and an error handling unit that performs error handling when the displacement amount exceeds a predetermined value.