摘要:
A thermal head, in which the catching of a foreign object on a partial glaze is prevented and the head pressure of the partial glaze is not reduced, is provided such that the image quality is improved by preventing the occurrences of line voids, irregularities, and roughness. In a thermal head which includes a partial glaze, which protrudes and whose cross-sectional configuration is substantially arc-shaped, on a recording material opposing surface, the radius of curvature of a heater portion on the partial glaze is less than 50 mm and the height of the partial glaze from the recording material opposing surface is 40 .mu.m or less. Further, the height of the partial glaze from the recording material opposing surface at the conveying direction upstream side of the recording material may be set lower than the height of the partial glaze from the recording material opposing surface at the conveying direction downstream side of the recording material with the heater portion therebetween.
摘要:
In a contact type recording head which moves relatively with respect to the recording material while its one portion is coming into contact with the recording material, and directly prints an image onto the recording material or indirectly prints an image onto the recording material through the recording material, the microscopic irregularity is provided on a material contact portion S of the heating element 45 which comes into contact with the recording material. It is preferable that the microscopic irregularity is formed in a streak-like manner in the direction of the relative movement with the recording material, and the average roughness Ra of the microscopic irregularity in the perpendicular direction to the relative movement direction is 0.03-0.5 &mgr;m.
摘要:
A cleaning roller system, which is preferable for use in a printer having a printing head, is disclosed. The cleaning roller system comprises an adhesive roller which is provided on a recording material feeding side relative to a print head, the adhesive roller has adhesive property, and is in contact with a surface of said recording material, and rotates in a direction of transporting said recording material.
摘要:
An image recording apparatus in which ink transfer from a donor sheet to an image-receiving sheet is carried out. The donor sheet has a size larger than the image-receiving sheet. The apparatus includes a rotating drum around which the image-receiving sheet and the donor sheet may be wound and laminated, and a squeeze roller. The squeeze roller has a middle portion with a fixed radius and a smaller radius portion at one or both ends. Outside an area for the image-receiving sheet, the drum has a first protruding mound portion with which the donor sheet is in surface-contact when the sheets are wound around the drum. A boundary of the smaller radius portion and the middle portion is positioned at an image-receiving sheet side of the first mound portion when the sheets are pressed against the drum.
摘要:
In an ink ribbon separation device for use with a thermal transfer apparatus having a separation bar, the shape of the separation bar is such that the thickness of the bar in an ink ribbon travelling direction is greater at its center in the direction orthogonal to the ink ribbon travelling direction than that at the ends thereof. The center bulges in a downstream direction in a bow shape at a rate of 10 to 200 &mgr;m with respect to a toner width of 100 mm.
摘要:
An electroluminescent device including a substrate on which a first electrode is formed; a transparent substrate disposed on the first electrode side of the substrate; a color filter disposed between the first electrode and the transparent substrate; an electroluminescent layer disposed between the first electrode and the color filter; and a second electrode disposed between the electroluminescent layer and the color filter.
摘要:
The optical modulator includes an optical waveguide for receiving light entered from a first end surface thereof and for emitting the light from a second end surface opposing to the first end surface, a flexible light transmitting member disposed so as to face with a boundary surface of the optical waveguide and has a gap between the flexible light transmitting member and the boundary surface of the optical waveguide and a modulation device for bringing the flexible light transmitting member into contact with the boundary surface of the optical waveguide. The image recording apparatus includes the above exposure head and a scanning device for relatively moving a photosensitive material and the exposure head.
摘要:
An image transfer apparatus is arranged in a manner that an image bearing sheet on which an image is formed and a sheet on which an image is to be transferred are laminated, and the two sheets thus laminated are passed between a pair of heat rollers from an insertion table thereby to transfer the image formed on the image bearing sheet on the sheet on which the image is to be transferred. The image bearing sheet is placed on the insertion table, then the sheet on which an image is to be transferred is laminated on the image bearing sheet, and the two sheets thus laminated are inserted between the pair of heat rollers.
摘要:
A writable and erasable flexible medium 2 as display is stored in a cylindrical magazine type case 3 as a scroll so that the flexible medium can be rewound. Write and read can be executed by means of a CPU, write head, scanner, etc., contained in the case 3, and additional write, erasion, etc., with a write pen 5 can also be performed as desired.
摘要:
An image correction method structured such that supplied image data is converted into image data which must be output when supplied image data is output by a printing apparatus including a line-type head, the image correction method including steps of performing: CMS-conversion (21) of supplied image data in three dimensional or higher order; increase (30) of a gradation accuracy of image data after the CMS conversion has been performed; a correction process (31) of image data having the increased gradation accuracy; and a multivalued dither process (32).