A method (1) for preparing a laser marking system (100) to create a colored laser mark on a specimen comprising the following steps: a) Providing a laser marking system (100) and a specimen (105) comprising a surface layer (105a), wherein the laser marking system comprises a preset number of laser parameters (12); b) Performing an exploration of a first gamut (2) specified by the laser marking system (100) and the specimen (105) comprising a surface layer (105a) including the following steps: aa) Creating (3) a design space (10) with a preset number of design points (11), wherein each design point (11) represents a combination of the preset number of laser parameters (12); bb) Performing (4) a marking of a sample on the specimen (105) for each design point (11); cc) Measuring (5) the sample using at least one detection device (106) and deter-mine for each design point a performance point (14), wherein the measured performance points (14) define a performance space (13); dd) Evaluating (6) the performance space (13) with regard to preset performance criteria using an evaluation device (107), wherein a Pareto front is determined comprising a subset of performance points; ee) Generating (7) an offspring design space (10a) with offspring design points (11a); ff) Creating (8) a first gamut (2) using the subset of performance points forming the Pareto front; wherein the steps bb) to dd) are iterated (9) for a preset iteration number, wherein in each iteration (9) the offspring design space (10a) of the previous iteration is used in step bb), wherein in each iteration the measured performance space is combined (15) with the performance space of the previous iteration (9) such that in step dd) the combined performance space (13a) is used.

A method (1) for preparing a laser marking system (100) to create a colored laser mark on a specimen comprising the following steps: a) Providing a laser marking system (100) and a specimen (105) comprising a surface layer (105a), wherein the laser marking system comprises a preset number of laser parameters (12); b) Performing an exploration of a first gamut (2) specified by the laser marking system (100) and the specimen (105) comprising a surface layer (105a) including the following steps: aa) Creating (3) a design space (10) with a preset number of design points (11), wherein each design point (11) represents a combination of the preset number of laser parameters (12); bb) Performing (4) a marking of a sample on the specimen (105) for each design point (11); cc) Measuring (5) the sample using at least one detection device (106) and deter-mine for each design point a performance point (14), wherein the measured performance points (14) define a performance space (13); dd) Evaluating (6) the performance space (13) with regard to preset performance criteria using an evaluation device (107), wherein a Pareto front is determined comprising a subset of performance points; ee) Generating (7) an offspring design space (10a) with offspring design points (11a); ff) Creating (8) a first gamut (2) using the subset of performance points forming the Pareto front; wherein the steps bb) to dd) are iterated (9) for a preset iteration number, wherein in each iteration (9) the offspring design space (10a) of the previous iteration is used in step bb), wherein in each iteration the measured performance space is combined (15) with the performance space of the previous iteration (9) such that in step dd) the combined performance space (13a) is used.

A method of marking a package of articles, especially consumer articles, such as cigarettes or the like, includes providing a package of one or more article and a first wrapping material. The package is wrapped with the first wrapping material. A marking is provided on a region of the enclosure. The step of providing a marking on the region of the enclosure includes irradiating the wrapped package with a laser beam, and the first wrapping material is substantially transparent to the laser beam, at least in the region to be marked. An apparatus for marking a package of articles, such as a pack of cigarettes, is also described.

A method of marking a package of articles, especially consumer articles, such as cigarettes or the like, includes providing a package of one or more article and a first wrapping material. The package is wrapped with the first wrapping material. A marking is provided on a region of the enclosure. The step of providing a marking on the region of the enclosure includes irradiating the wrapped package with a laser beam, and the first wrapping material is substantially transparent to the laser beam, at least in the region to be marked. An apparatus for marking a package of articles, such as a pack of cigarettes, is also described.

It has been found, that when co-absorbing substances are added to intrinsic laser-absorbing bismuthoxide, the marking performance with a Nd.YAG-laser is improved or at least kept at the same level by reducing the costs. It is suspected, that the co-absorbing additive is not simply adding a contrast to the polymer by carbonizing the surrounding polymer but helping the bismuthoxide to couple the laser radiation and to ease the color change of this additive. This so found effect helps to cheapen the replacement of antimony trioxide and therewith have a safer and more sustainable solution for the current and future technology of laser marking.

A method for manufacturing a sintered body having one or more hard constituents in a metallic binder phase, the method including the steps of forming a green body from a powder composition including at least the one or more hard constituents, the metallic binder phase, and an organic binder system, forming a pattern in a surface of the green body such as to provide a tag enabling individual identification of the green body, and sintering the green body with the tag to form a sintered body having a smaller volume than the green body. The pattern is formed such that the tag is readable after the sintering operation.

Iodonium salt initiator and processing-free thermally sensitive plate precursor containing thereof, and processing-free thermally sensitive plate and use thereof, At least one of two para positions of two benzene rings of the iodonium salt initiator is an alkene group containing a carbon or nitrogen or oxygen atom and a double bond at an end. The alkene group can increase a steric hindrance of the iodonium salt, improves compatibility of the iodonium salt, the thermosensitive resin and the crosslinkable prepolymer, reduces the surface migration of the iodonium salt in the imaging layer and improves the initiation efficiency. During the laser imaging, a double bond contained in a residual end of the iodonium salt can perform a crosslinking reaction with the thermosensitive resin and the crosslinkable prepolymer, and thus reduces damage to the imaging layer caused by small molecules. At the same time, substituents can be arranged at four meta positions of the two benzene rings to increase the steric hindrance of the iodonium salt, and therefore, the surface migration of the iodonium salt in the imaging layer is further reduced, and the initiation efficiency is improved and the performance of the processing-free thermally sensitive plate is further improved.

A glass container including a body having a delamination factor less than or equal to 10 and at least one marking is described. The body has an inner surface, an outer surface, and a wall thickness extending between the outer surface and the inner surface. The marking is located within the wall thickness. In particular, the marking is a portion of the body having a refractive index that differs from a refractive index of an unmarked portion of the body. Methods of forming the marking within the body are also described.

Software and lasers are used in finishing apparel to produce a desired wear pattern or other design. A technique includes determining a fabric's response to a laser, capturing an initial image of a wear pattern on a garment, and processing the initial image to obtain a working image in grayscale. The working image is further processed to obtain a difference image by comparing each pixel relative to a dark reference. The difference image is converted to a laser values image by using the previously determined fabric response to the laser.

A casting system includes a laser marking device configured to mark an identifying mark on a casting or a mold under a set marking condition, a recognition device configured to recognize the identifying mark marked on a surface of the casting by the laser marking device or the identifying mark transferred to the surface of a casting produced using the mold marked by the laser marking device, on the basis of a detection result of a sensor, wherein the laser marking device changes the set marking condition in a case in which the identifying mark on the casting is not recognized by the recognition device.