摘要:
A method is realized for easily performing, without using a masking tape, an operation to accurately form a coating film 31 only on a coated section (α8) partly formed on the surface of a hub main body 13a. The upper end face of a rubber closed end cylindrical masking cover 32 is elastically pressed against the outside end surface of a cylindrical section 16 forming the hub main body 13a. As a result a border section between the coated section (α8) and the portion adjacent to the coated section (α8) can be made liquid-tight. In this state, coating particles are electrodeposited on the coated section (α8) by bringing a coating liquid 28 discharged from a liquid supply tube 29 into contact with the coated section (α8). By adopting such a method, the problems can be solved.
摘要:
An method and apparatus for measuring the preload gap of a double row rolling bearing, such that it is possible to accurately determine the preload to be obtained when the inner ring is fully pressed onto the cylindrical surface of the spindle from a condition wherein the rolling bodies or members are in an unpreloaded condition prior to fully pressing the inner ring.
摘要:
An electrode of a color picture tube electron gun with a recess provided on the periphery of an electron beam pass aperture, characterized in that the electrode has a thickness of 0.4 to 1.0 times the diameter of the electron beam pass aperture at the portion at which the recess is to be formed and a thickness of 0.1 to 0.2 times the diameter of the electron beam pass aperture at the recessed portion, and the sheet material for the electrode is subjected to plastic working so that the recess forming surface has a thickness of 25 to 50% the thickness of the sheet material or a projection and/or a groove having a section with steeply inclined side portions is provided on both sides of the recess at least in the direction of the width of the recess approximate to the diameter of the electron beam pass aperture.
摘要:
There is provided an electron gun which has an assembly precision improved by the reduction of deformation of an electrode during assembly as well as good focusing performance due to the elimination of positional deviation of electron beams. There is also provided a method of assembling such an electron gun. The electron gun comprises a composite electrode including at least two electrode elements united together and a plurality of electrodes sequentially arrayed along a single axis at predetermined intervals. In the electron gun, opposed faces of the electrode elements of the composite electrode are perpendicular to the axis and the opposed faces are provided with projections 1a and 1b which serve to constitute the composite electrode when the projections are united together in opposed relationship to each other.
摘要:
A method of fabricating an electrode of a color picture tube electron gun, the electrode having an aperture for passing an electron beam and having a recess formed in a surface of a single metal plate, comprises the steps of forming in the metal plate a laterally elongated through hole being substantially symmetrical with the axis of the electron beam pass aperture and having a major diameter in a longitudinal direction of the recess, before the recess is formed, forming the recess at a peripheral wall area of the laterally elongated through hole through a coining process, and forming the electron beam pass aperture by removing a wall portion of the through hole existing after completion of the coining process to form a through hole of a predetermined shape.
摘要:
A sheet processing apparatus has a function of stapling sheets together, wherein the sheets are fed from an image forming apparatus one by one after images are formed on the sheets. The sheet processing apparatus includes a stapler to staple the sheets together, a sheet guide which guides the sheets along a sheet transporting path from the image forming apparatus to a position at which the sheets are stapled by the stapler, and a reference surface against which edges of the sheets are butted to stop movement of the sheets. The sheets are guided along the sheet transporting path by the sheet guide and the edges of the sheets are butted against the reference surface at a same position relative to a sheet conveying direction, irrespective of whether the sheet processing apparatus is in a stapling mode in which the stapler staples the sheets or a non-stapling mode in which the stapler does not staple the sheets, and irrespective of sizes of the sheets.
摘要:
A color cathode ray tube having an electron gun which includes a one piece electrode plate. The one piece electrode plate has three beam passage holes in an in-line arrangement and bead supports. The one piece electrode plate has two portions including a portion having the beam passage holes and a portion having the bead supports which are formed as a one piece structure. The portion having the beam passage holes has a thickness larger than a thickness of the bead supports portion and the one piece structure has steps and continuous walls between the two portions.
摘要:
An automatic document conveyance apparatus includes: a document feeding section on which a plurality of documents can be placed, for feeding documents one by one therefrom; a zigzag reversal path through which the document fed from the document feeding section is reversed with respect to front and back sides of each of the documents; a reading position forming device for forming an image reading position of the document fed zigzag from and conveyed to the zigzag reversal path; and a document ejection tray on which the document passed through the reading position forming device and ejected through an ejection path is placed. The document fed from the document feeding section is conveyed to the zigzag reversal path at which the document is reversed, the document is fed zigzag to the reading position at which one side of the document is read, the document is conveyed again to the zigzag reversal path at which the document is reversed again, the document is fed zigzag again from the zigzag reversal path to the reading position at which the other side of the document is read, and then the document is ejected from the reading position to the document ejection tray.
摘要:
A sheet finishing apparatus for finishing a sheet, on which an image has been formed, conveyed from an image forming apparatus, the sheet finishing apparatus includes: a sheet ejecting member for ejecting the sheet after finishing; and an exit tray for receiving the sheet ejected by the sheet ejecting member after finishing is conducted. The exit tray includes a movable exit tray member on which the sheet is stacked, and a stationary exit tray member for supporting the movable exit tray member. The movable exit tray member has a sheet stacking surface on which the sheet is stacked, and a stopper portion provided adjacent to the sheet ejecting member to bring an edge of the sheet into contact with the stopper portion. The movable exit tray member is pivotally supported around a supporting shaft provided on a leading edge portion of the stationary exit tray member. An edge portion of the movable exit tray member, which is adjacent to the sheet ejecting means, can be moved upward or downward according to the number of sheets stacked on the movable exit tray.
摘要:
An electrode structure for an electron gun, especially an in-line type electrode structure for an electron gun of a color picture tube. The electrode structure dispenses with auxiliary electrodes and its three cylindrical members are integrally formed by press work. After the pressing step, the inner edge of the bottom portion of each cylindrical members is beveled to provide a tapering surface having a desired circular cross section. By forming a circular groove in the bottom portion, opposite to the tapering surface, the formation of the tapering surface is made more exact.