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36 results about "Lines per inch" patented technology

Lines per inch (LPI) is a measurement of printing resolution. A line consists of halftones that is built up by physical ink dots made by the printer device to create different tones. Specifically LPI is a measure of how close together the lines in a halftone grid are. The quality of printer device or screen determines how high the LPI will be. High LPI indicates greater detail and sharpness.

System for preparing prime label pressure sensitive intermediate laminates

The present invention is in the field of composite manufacturing systems that are used in the preparation of articles, namely pressure sensitive laminates such as prime labels and tags. The system of the instant specification includes a computer for creating a file, an image generation means for rendering typically a graphical depiction on one or more surfaces of a substrate, an inserter for placing ribbon or label segments and a web processing apparatus. The labels of the present invention are produced in part, initially from a pre-imaged or printed sheet that are then converted or merged to a roll type of format. The sheets are printed with high quality graphics or images which are then slit or cut to size to form ribbons or label segments for the prime label application and then are converted to or merged with a continuously advancing web to create a continuous roll format. Then the label segments that have been affixed to the web are provided in one or more intermediate configurations to an end user typically for application to consumer packaged goods. More particularly, the pressure sensitive laminates of the instant application can be used to create individual, prime labels having a high or photo quality resolution level such as those about 300 lines per inch or approximately 2500 to 3500 dots per inch.
Owner:WARDKRAFT

Method for printing a material onto a substrate

The invention provides a method for printing a material onto a substrate with a relief printing form made from a photosensitive element. The method includes forming an in-situ mask having a line screen resolution equal to or greater than 250 lines per inch on the photosensitive element, exposing the element to actinic radiation through the in-situ mask in an environment having an inert gas and a concentration of oxygen between 190,000 and 100 ppm, and treating the exposed element to form a relief structure having a plurality of raised surfaces with a line screen resolution equal to or greater than 250 lines per inch. Printing is accomplished by applying an imaging material to the plurality of raised surfaces and contacting to transfer the imaging material to the substrate. The method is suitable for printing high resolution graphic images, as well as for forming a uniform layer of imaging material on the substrate.
Owner:DUPONT ELECTRONICS INC

Image forming apparatus and method to improve image quality thereof

An image forming apparatus to improve image quality. The image forming apparatus includes a window control unit to generate a window of a predetermined size using a lines per inch (LPI) value of a dithering mask and an angle, and to detect locations of a center reference pixel and neighboring reference pixels in the window, a weighting set unit to apply weighted values to the reference pixels based on locations of the detected center reference pixel and the neighboring reference pixels, and a control unit to determine a dot size of the center reference pixel corresponding to weighted values corresponding to locations of black pixels of the center reference pixel and neighboring reference pixels. Accordingly, image quality is improved by generating dots corresponding to a plurality of gray levels based on weighted values.
Owner:S PRINTING SOLUTION CO LTD

Image forming device

An image forming device is disclosed which can easily and promptly execute a copy restriction process that restricts the copying of an original document based on a background pattern included in the original document image that is obtained by scanning the original document. In the restriction process, when an original document is scanned, the number of lines (i.e., lines per inch) in the background pattern included in the original document image will be detected. Then, it will be determined whether the detected number of lines per inch is a predetermined number of lines per inch (e.g., less than 65 LPI). Based on the determination result, the copying of the original document will either be permitted or restricted.
Owner:KYOCERA DOCUMENT SOLUTIONS INC

Thermal recording apparatus, image forming method, and printed object

A control section 9 of a thermal printer 1 performs resolution conversion, gradation conversion, and CMYK color separation for input image data 3. After that, for image data of each color, the control section 9 performs shift processing for double-tone printing, to thereby obtain two types of image data. The control section 9 performs dot conversion and reverse shift processing for these image data, and prints the two types of image data in a superposed state. In the shift processing, the control section 9 shifts the image data of each color by the number of pixels corresponding to the resolution of the thermal printer 1 and the number of lines per inch. At that time, the image data of each color may be shifted by the corresponding number of pixels which differs among the colors. Further, for some colors, single-tone printing is performed, rather than double-tone printing, to thereby reduce the number of times of overprinting. Further, dot-on-dot processing, which is special shift processing, is performed for image data of a color to be printed second or later. Image data combining is performed such that the image data having undergone the dot-on-dot processing is used in a highlight region, and the image data having undergone the ordinary shift processing is used in the remaining region.
Owner:DAI NIPPON PRINTING CO LTD

Printing process for UV (ultraviolet) snowflake pattern by offset printing

InactiveCN103625138AImprove printing process efficiencyStrong flash effectOther printing apparatusPrinting after-treatmentComputer to plateLines per inch
The invention belongs to the technical field of printing, and in particular relates to a printing process for finishing a UV (ultraviolet) snowflake pattern by offset printing. The technical scheme of the printing process is characterized by comprising the following steps: (1) designing and typesetting according to the printed characters, patterns and signs to generate to a CTP (computer-to-plate) with 150 to 200 lines per inch; (2) arranging the CTP generated in the step (1) to the last group of printing units of a UV offset printing machine, and placing printing paper into a Fidek; (3) adjusting the viscosity of UV offset printing snowflake printing ink to be 20 to 30 S, and adjusting an inking position of the UV offset printing machine to be 20 to 70 percent; (4) adjusting the paper feeding speed of the UV offset printing machine to be 7,000 to 12,000 pieces / hour, starting a UV drying system of the UV offset printing machine, adjusting the drying power of the UV drying system to be 2 to 5 Kw, and starting the machine to print. According to the printing process, the UV snowflake pattern is printed by adopting the offset printing machine, so that the consumption of the printing ink is effectively reduced, the printing efficiency is improved, and the UV snowflake pattern with a strong flash effect and three-dimensional effect can be generated by printing once.
Owner:SHENZHEN NINE STARS PRINTING & PACKAGING GRP

Image processing apparatus and image processing method

An image processing apparatus includes a receiving section, an edge detection section and a screen processing section. The receiving section receives image information. The edge detection section detects an edge area from the image information received by the receiving section. The screen processing section performs a screen process, which is based on area coverage modulation, for the image information on a basis of the detection result by the edge detection section. The screen processing section performs a screen process for the edge area detected by the edge detection section with (i) a screen angle, which is equal to that of a screen process performed for a non-edge area other than the edge area, and (ii) a number of lines per inch, which is an integer multiple of that of the screen process performed for the non-edge area.
Owner:FUJIFILM BUSINESS INNOVATION CORP

Method for generating basic template utilized to form screening mask

Disclosed is a method for generating a basic template utilized to form a screening mask. The method includes adjusting lines per inch or minimum pattern (such as cluster size or density) of a testing template, printing the adjusted testing template by an outputting device, determining if the gray level of the printing result matches a specific gray level, and continuously adjusting the setting of the lines per inch or the minimum pattern when it does not match the specific gray level, otherwise selecting the adjusted testing template as a basic template. The basic template is optimized according to the printing ability of the outputting device, so the printing performance of the outputting device when using the screening mask formed from the basic template can also be optimized, and the minimum color points can be printed faithfully thereby avoiding dropping of the carbon powder.
Owner:PRIMAX ELECTRONICS LTD
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