75 results about "Dots per inch" patented technology

An optical scanning apparatus includes light sources, an aperture having, and coupling lenses. Numbers of the light sources and the coupling lenses are equal to each other and the apparatus satisfies an inequality 12.7<(D×β0×m0×dpi) / (2×NA)<38.1 and an equation β0=(β+−β−) / (n−1), wherein D represents a width of the slit of the aperture, β0 represents a beam open angle, mo represents a total lateral magnification ratio, dpi represents a number of dots per inch, NA represents a numerical aperture, β+ represents a positive open angle, β− represents a negative open angle, and n represents the number. Further, an image forming apparatus using this optical scanning apparatus and an image forming method are provided.

A method and an apparatus for measuring the depositability of particulate contaminants present in a pulp or paper mill fluid stream and evaluating interactions of such particulate contaminants with other contaminants collects the particulate contaminants on a suitable substrate, such as a plastic film coated with an adhesive or coated with organic contaminate, placed in contact with the pulp or paper mill fluid stream for at least five minutes up to several hours. The amount of contaminants collected on the substrate is quantified and evaluated by taking one or more scanned images of the substrate with a resolution of at least 2,000 dots per inch (DPI) and analyzing the scanned images with image analysis technique.

In an apparatus for performing printing using a color ink-jet head having a plurality of ink-discharge-port strings corresponding to ink materials having different color tones, a high-quality image having excellent gradation can be recorded, while reducing the cost of the apparatus and increasing the data processing speed by reducing the capacity of a memory for storing dot arrangement patterns. For that purpose, as a plurality of dot arrangement patterns for determining dot arrangement at output within a M×N-dot region for one input pixel, (1) patterns having a large number of gradation levels that can be represented (for example, nine gradation levels) and a high recording resolution (for example, 1,200 dpi (dots per inch)×2,400 dpi) are used for colors in which uneven stripes tend to be pronouncedly observed (for example, light cyan and light magenta), and (2) patterns having a small number of gradation levels that can be represented (for example, five gradation levels) and a low recording resolution (for example, 1,200 dpi×1,200 dpi) are used for colors in which uneven stripes tend to be less pronouncedly observed (for example, black, cyan, magenta and yellow).

The invention provides thermal-transfer coloured crystal glass which can be used for printing fine texts and images and can realize scale industrial production and a preparation method of the thermal-transfer coloured crystal glass. The preparation method comprises the following steps of: carrying out corona treatment on a surface of a biaxially oriented polyester (BOPET) film; coating organic silicon resins, acrylic resins and a printing oil ink layer in a layered mode and coating a polyester and epoxy mixed resin layer to form a thermal-transfer coating film; hot-pressing a coating on the thermal-transfer coating film by hot-pressing equipment, and transferring the coating to the back of the glass; and carrying out heating and solidification to form thermal-transfer flat or curved coloured crystal glass. The thermal-transfer coloured crystal glass is characterized in that: the oil ink layer is high in high combination firmness, colour consistency is good, temperature resistance and weathering resistance are achieved, a long-term non-discolouring effect is achieved, the colour is uniform, the printing of the texts and the images is fine, and resolution reaches 600 dots per inch (dpi).

The present invention includes as one embodiment a fluid ejection device coupled to an ink supply and having multiple printing modes, including a sufficient number of ink drop generators fluidically coupled to the ink supply device and formed in the fluid ejection device and arranged along at least three axes that are substantially parallel and spaced apart from each other to provided printing resolution of at least 600 dots per inch with each printing mode. The plurality of ink drop generators is arranged along four axes that are substantially parallel and spaced transverse to each other and wherein the plurality of ink drop generators arranged along the four axes are staggered with respect to each of the axes to decrease an effective pitch of the fluid ejection device to approximately one-fourth that of a plurality of ink drop generators arranged along a single axis.

An untethered, arbitrary-surface printing device includes a housing, a print head, positioning means, locomotive means, and sensors configured to perform multi-pass high-precision printing (i.e. at least 300 dots per inch) on nearly any surface texture.

A systematic approach to producing multi-dimensional photon images on a computer platform having applications to a plurality of input image(s) from various sources, and applications to coordinate and adjust numerous variables which determine the quality of the image, such as the size of the imported images, the output image size, the resolving power of the viewing screen and the width of the resolving elements, the dots per inch of the output device (or pixels per inch), the desired nearest object, the desired furthest object and the determination of the central or the “key subject”, rules of interphasing, the number of frames or layers, the minimum parallax, and the maximum parallax, and, thus, provide a digital multi-dimensional image without jumping images or fuzzy features or other visual distortions by creating high quality output images both in the form of a printed hardcopy or as a viewed image on an appropriate viewing device. The digital multi-dimensional image platform based system controls the position and path of light from the original object to the human visual system.

A systematic approach to producing multi-dimensional photon images on a computer platform having applications to a plurality of input image(s) from various sources, and applications to coordinate and adjust numerous variables which determine the quality of the image, such as the size of the imported images, the output image size, the resolving power of the viewing screen and the width of the resolving elements, the dots per inch of the output device (or pixels per inch), the desired nearest object, the desired furthest object and the determination of the central or the “key subject”, rules of interphasing, the number of frames or layers, the minimum parallax, and the maximum parallax, and, thus, provide a digital multi-dimensional image without jumping images or fuzzy features or other visual distortions by creating high quality output images both in the form of a printed hardcopy or as a viewed image on an appropriate viewing device. The digital multi-dimensional image platform based system controls the position and path of light from the original object to the human visual system.

A systematic approach to producing multi-dimensional photon images on a computer platform having applications to input image(s) from various sources, and applications to coordinate and adjust numerous variables which determine the quality of the image, such as the size of the imported images, the output image size, the resolving power of the viewing screen and the width of the resolving elements, the dots per inch of the output device (or pixels per inch), the desired nearest object, the desired furthest object and the determination of the central or the “key subject”, rules of interphasing, the number of frames or layers, the minimum parallax, and the maximum parallax, and, thus, provide a digital multi-dimensional image without jumping images or fuzzy features or other visual distortions by creating high quality output images both in the form of a printed hardcopy or as a viewed image on an appropriate viewing device.

The invention provides a VoIP (voice over internet protocol) control system which comprises an acquisition unit, an identification unit, a storage unit, a search unit and a decision-making unit, wherein the acquisition unit is used for carrying out acquisition on data; the identification unit is used for carrying out identification on data, and when a situation that a VoIP signaling stream exists in the data is identified, extracting signaling information in the signaling stream, and sending the signaling information to other DPI (dots per inch) acquisitors in a DPI acquisitor cluster; the storage unit is used for receiving signaling information sent by the other DPI acquisitors in the DPI acquisitor cluster, and storing the signaling information; the search unit is used for searching signaling information corresponding to a media stream from the stored signaling information when a situation that the media stream exists in the data is identified, if the signaling information is searched, identifying the protocol type of the media stream into a VoIP protocol type the same as that of the information; and the decision-making unit is used for controlling the VoIP protocol according to a control strategy corresponding to the stored VoIP protocol type. Accordingly, the invention also provides a VoIP control method. Through the technical scheme of the invention, under the condition that the signaling stream is separated from the media stream, the VoIP protocol type can be correctly identified, and a corresponding control strategy can be taken for the VoIP protocol type.