Abstract: A method for changing spools in which a sheet continuously supplied to a reel drum is wound onto a new spool, comprising the steps of bringing the new spool held on an arm at a waiting position into contact with the reel drum; cutting the center part of the sheet with two cutting devices along two approximately parallel cutting lines in the running direction of the sheet at a location on the reel drum upstream in the running direction of the sheet; supplying an adhesive to an area between the cutting lines and letting the adhesive adhere onto a surface of the new spool; and moving said two cutting devices toward the two respective edges of the sheet so as to cut the sheet into a triangular shape.

Abstract: The frame member for pressurized screening device includes an inflatable tube disposed along and outwardly of the peripheral wall of the frame. A screen is stretched over an opening in the frame and extends above the peripheral wall and the inflatable tube so that the inflatable tube can be brought into contact with the screen to impart tension to the screen. The inflatable tube is only inflatable in a direction transverse to the direction of the stretching of the screen and in such a manner as not to touch the holder member. A holder member is removably mounted on the screen attaching portion of the frame to sandwich the screen between the upper surface of the screen attaching portion and the lower surface of the holder member.

Abstract: A coating composition for use to produce heat-sensitive record material is produced by admixing and heating at least one colorless chromogenic material or acceptor and at least one heat fusible material having a melting point within the range of 60.degree. C. to 200.degree. C. to form a co-melt, atomizing the co-melt with a spray nozzle to form finely divided particles comprising the colorless chromogenic material or acceptor and the heat fusible material, and preparing a coating composition including said finely divided particles dispersed therein.