A set of laminates includes an outer laminate and an inner laminate, wherein the outer laminate includes a transparent polymeric support including on a first side of the support a color laser markable layer containing an infrared dye having an absorption maximum λ.sub.max(IR-1) in the infrared region; wherein the inner laminate includes a transparent polymeric support including on, a first side of the transparent polymeric support, a color laser markable layer containing an infrared dye having an absorption maximum λ.sub.max(IR-2) in the infrared region and, on a second side of the transparent polymeric support, a color laser markable layer containing an infrared dye having an absorption maximum λ.sub.max(IR-3) in the infrared region; and the conditions a) and b) are satisfied:
λ.sub.max(IR-1)>λ.sub.max(IR-2)>λ.sub.max(IR-3); and  a)
λ.sub.max(IR-1)>1100 nm and λ.sub.max(IR-3)<1000 nm.  b)

The detector that detects a light beam emitted from a light source of a second image forming device and reflected by a polygon mirror, and an adjustment device that performs adjustment processing of adjusting the velocity of the polygon mirror based on an output of the detector are provided. Before a first image forming device performs the image forming processing, the adjustment device performs the adjustment processing while causing the light source of the second image forming device to emit the light beam during a time period including at least a time period in which a photosensitive member of the second image forming device is emitted with the light beam. Before the adjustment processing is finished, the first image forming device starts to move a developing member to a developing position.

This method, intended for the marking of a receptacle (2) while it is moved along a conveying path, comprises: moving the receptacle (2) in a marking station along the conveying path; simultaneously marking a first surface region (2A) and a second surface region (2B) of the receptacle (2) while it is moved in the marking station along the conveying path, using a first laser beam (44) and a second laser beam (54) emitted in opposite directions on both sides of the receptacle, transversally to the conveying direction (X.sub.1), the first and second surface regions (2A, 2B) being arranged substantially at 180° from each other with respect to a main axis (X.sub.2) of the receptacle.

An edible body marking device that forms a marking pattern on an edible body by scanning a laser spot. The marking pattern includes, as additional information, positional information of one or more index dots that are made by partially deforming or removing one or more dots of the laser spot, or newly adding one or more dots of the laser spot with respect to a basic pattern that is obtained by forming a plurality of the dots of the laser spot.

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.

An electrophotographic imaging device, including at least one photoconductive member, a printhead unit, at least one shutter-wiper member, and at least one shutter actuator. The at least one shutter-wiper member is moveable in a first direction between a first position in which the shutter-wiper covers the at least one exit lens of the printhead unit and a second position in which the at least one shutter-wiper does not cover the at least one exit lens so as to allow the at least one light beam generated by the printhead unit to pass therethrough. The at least one actuator is coupled to the at least one shutter-wiper member such that movement of the at least one shutter actuator in a second direction substantially orthogonal to the first direction causes the corresponding shutter-wiper member to move in the first direction.

A laser printing apparatus and method for a color dynamic image are provided. The laser printing apparatus includes an optical system and a recording material; the recording material includes a refraction layer formed by multiple microspheres or microlenses, and a shading layer formed on a focal plane of the multiple microshperes or microlenses; the optical system includes a laser and an graph generator, a laser light emitted by the laser irradiates onto the recording material after being processed by the image generator, the laser light irradiating onto the recording material is focused on the shading layer via the refraction layer, and a focus point is formed on the shading layer when energy of the focused laser light is greater than an evaporation threshold value of the shading layer.

The present invention is aimed to design an invented portable laser marking apparatus with a mini size body, which includes several modules received in a single body for providing improved utility. That is, the present invention includes a laser control module, a marking module, a plug-in computer module, and a power supply module. All modules are easily assembled in the apparatus to become a portable single mini body, which can then be provided with a panel thereon. Therefore, by use of the single mini apparatus according to the present invention, users can operate the laser marking apparatus easily and obtain the design effect of the invention.

To provide a protection barrier, which includes an inlet from which laser light emitted from a laser device enters; an outlet from which the laser light is output towards an irradiation target; and a unit configured to prevent a leakage, where the unit is configured to reduce an intensity of the laser light leaked from the protection barrier, wherein the protection barrier is configured to surround a light path of the laser light emitted from the laser device.

A device having a function of adjusting image processing such as PWM setting, printer density setting and engine speed downstream of a video counter or a dot counter determines a correction coefficient of a video count value or a dot count value, according to a combination of adjustment values of image processing for realizing configured print settings, and corrects the count value by applying the correction coefficient to the video count value or the dot count value.