An image forming apparatus includes a photosensitive member, a light source, a deflecting unit, a storing unit, a correcting unit, and a light source driving portion. Magnification correction data is determined using a quadratic function of a variable representing a scanning position with respect to a scanning direction. Coefficients of two quadratic functions corresponding to adjacent two regions included in a plurality of scanning regions are set so that a differential value calculated at the variable corresponding to a boundary of the two regions by a differential of the quadratic function for one region and a differential value calculated at the variable corresponding to the boundary of the two regions by a differential of the quadratic function for the other region are equal to each other.

The invention discloses a decoration apparatus for decorating a web of labeling material. The decoration apparatus comprises conveyor for advancing the web of labeling material between a first station and a second station, an activation unit adapted to apply an activation energy at a activation station for selectively activating activatable pigments comprised in the web of labeling material or to locally ablate the web of labeling material and a temperature-conditioning unit which is adapted to actively cool and/or heat the web of labeling material, in particular, in use, prior, during and/or after selectively activating the activatable pigments or ablating the web of labeling material.

A method comprises: providing a first stream of discrete volumes (908b) of material, and directing a pulsed laser beam (912) at a first discrete volume (908b) of material in the first stream of discrete volumes of material so as to interact with the first discrete volume of material and thereby displace the first discrete volume away from the first stream. An apparatus and a system for achieving such steps are also disclosed.

Some examples include a fuser assembly to operate with a roller including a fuser housing, and an array of fusers disposed in the fuser housing, each fuser including a heating element exposed along a surface of the fuser housing and adjacent to an outer surface of the roller.

Some examples include a fuser assembly to operate with a roller including a fuser housing, and an array of fusers disposed in the fuser housing, each fuser including a heating element exposed along a surface of the fuser housing and adjacent to an outer surface of the roller.

The present disclosure relates to equipment and a method for additive manufacturing, comprising an orientable energy excitation means for generating intermittent interaction with a fluid covering a blade in order to trigger a jet oriented in the direction of a target, the fluid consisting of a liquid vector containing inhomogeneities, wherein: the fluid forms a liquid film of a thickness measuring less than 500 m on a blade having at least one area allowing the interaction with the laser, into which at least one inlet leads, the interaction area leading into at least one outlet, the equipment also comprising means for the circulation of the fluid between the inlet and the outlet.

A laser marking system comprises at least one controller to control an array of optical devices, between a laser source and a scan head. The array applies a selected pattern of portions of the received spatial profile of the laser beam to the substrate to achieve a second intensity different from the first intensity of laser beam at a rate of power deposition relative to a rate of thermal diffusion in the substrate for a predetermined time interval to thermally heat locations of the substrate with the selected pattern of the portions. The second intensity effectuates carbonization of materials of the substrate to create a mark without ablation.

Systems and methods for laser printing product codes on products include, in at least one aspect, a system including: a laser marking device that directs a laser beam to dwell at different locations to form marks on the products; and a controller that obtains a code to be printed, groups discrete symbols in the code with each other into separate symbol groups based on locations of the discrete symbols in the code, organizes symbol(s) in each respective symbol group into one or more stripes in a direction perpendicular to a direction of motion of the products, adds extra distance or time delay between stripes in at least one of the separate symbol groups to prevent clipping of a symbol by the laser marking device by the laser marking device's print aperture, and causes the laser marking device to direct the laser beam in accordance with the separate symbol groups.

Some examples include a fuser assembly to operate with a roller including a fuser housing, and an array of fusers disposed in the fuser housing, each fuser including a heating element exposed along a surface of the fuser housing and adjacent to an outer surface of the roller.

An optical scanning apparatus includes a deflector configured to deflect a light beam from a light source and scan a surface to be scanned in a main-scanning direction and a single imaging optical element configured to guide the light beam deflected by the deflector to the surface to be scanned. Scanning speeds of the light beam on the surface to be scanned at an on-axis image height and at an off-axis image height are different from each other, and conditions
0.0<(R1.sub.h/2+R2.sub.h/2)/(R1.sub.h/2R2.sub.h/2)<1.7 and
0.8<h/TC<2.0
are satisfied.