摘要:
A printing apparatus and method that provides for severing of prints from receiver media being printed. The receiver media is moved in a process direction past plural printing stations and the printing stations are recording images upon the receiver sheet. While printing is occurring a cutting mechanism having one or more cutting elements is operated to cut the receiver media along a transverse direction to separate a previously printed image on the receiver media from a portion of the receiver media being currently printed. The cutting mechanism includes a clamping member located proximate the one or more cutting elements for stopping movement of the receiver sheet downstream of the clamping mechanism to provide for a substantially square cut relative to the process direction of the receiver media.
摘要:
A method of equalizing web-stretching caused by web tensioning in a dye transfer printer that is for use with a donor web having a dye transfer area and opposite edge areas alongside the dye transfer area, includes the steps of heating a dye transfer area to effect a dye transfer from the dye transfer area to a dye receiver, and heating the edge areas alongside the dye transfer area less than the dye transfer area is heated to effect the dye transfer, but sufficiently so that the edge areas may be stretched by tension substantially the same as the dye transfer area may be stretched. If the edge areas alongside a dye transfer area being used in the printer are stretched substantially the same as the dye transfer area, the likelihood of any creases being created in the next unused transfer area is substantially reduced. Thus, no line artifacts will be printed on a dye receiver in the printer.
摘要:
A donor web having successive dye transfer areas and opposite longitudinal edge areas alongside each one of the dye transfer areas is subjected to a longitudinal tension when the donor web is advanced in a dye transfer printer, which can stretch the dye transfer areas more than the edge areas because the dye transfer areas, but not the edge areas, are heated at a print head in the printer. According to the invention, the edge areas are pre-weakened before the donor web is used in the printer to weaken a resistance of the edge areas, relative to the dye transfer areas, to being stretched so that the edge areas can be stretched substantially the same as the dye transfer areas when the donor web is used in the printer. The edge areas can be pre-weakened, for example, by perforating or piercing them to create holes in them, or by slitting or cutting them to create cuts in them. If the edge areas alongside a dye transfer area being used in the printer are stretched substantially the same as the dye transfer area, the likelihood of any creases being created in the next unused transfer area is substantially reduced. Thus, no line artifacts will be printed on a dye receiver in the printer.
摘要:
A dye transfer printer uses a dye donor web that is capable of developing a crease-causing wave-like or ripple distortion across the donor web when the donor web is subjected to a longitudinal tension as it is advanced from a print head, over a web guide, and onto a web take-up spool in the printer. The web guide is positioned to extend across the donor web and is adapted to be bowed to effect a curvature across the donor web in proportion to the longitudinal web tension in order to urge the donor web to spread substantially widthwise to reduce the likelihood of the wave-like or ripple distortion developing across the donor web. If the wave-like or ripple distortion is prevented from developing in a dye transfer area being used, it is unlikely that any creases will be created in the next unused transfer area. Thus, no line artifacts will be printed on a dye receiver during dye transfer in the printer.
摘要:
A disk film camera which is of simple, compact and inexpensive construction and yet which provides one-button operation to locate the film, expose the film, disengage the film and advance the next frame. The camera requires no separate operation to initialize a cartridge when it is loaded into the camera. A photographer is free to change his mind about taking a picture at any time after moving the shutter button until the shutter is actually released, without adversely affecting the operation of the camera, such as by jamming it or by placing any component of the camera (such as a spring) in a stressed condition for an indeterminate period of time.
摘要:
In a dye transfer printer, a donor web having successive dye transfer areas that are used for printing and opposite longitudinal edge areas alongside each one of the dye transfer areas that are not used for printing are wrapped under longitudinal tension about a cylindrical spool core. The dye transfer areas that are wrapped under tension about the spool core are stretched thinner than the two edge areas that are wrapped under tension about the spool core due to their being heated during printing. The spool core is depressible inward at respective portions on which the two edge areas are wrapped under tension and is not depressible at an intermediate portion between the depressible portions on which the thinner transfer areas are wrapped under tension. As a result, a convolution build-up of the edge areas on the spool core will be no more than a convolution build-up of the thinner transfer areas on the spool core. This substantially reduces the likelihood of any creases being created in the dye transfer areas which would cause line artifacts to be printed on a dye receiver.
摘要:
In a dye transfer printer, a donor web having successive dye transfer areas and opposite longitudinal edge areas alongside each one of the dye transfer areas is subjected to a longitudinal tension when the donor web is advanced in the printer. The longitudinal tension can stretch the dye transfer areas more than the edge areas because the dye transfer areas, but not the edge areas, are heated at a print head. According to the invention, the resistance of the edge areas relative to the dye transfer areas, to being stretched, is weakened so that the edge areas can be stretched substantially the same as the dye transfer areas. If the edge areas alongside a dye transfer area being used are stretched substantially the same as the dye transfer area, the likelihood of any creases being created in the next unused transfer area is substantially reduced. Thus, no line artifacts will be printed on a dye receiver during dye transfer in the printer.
摘要:
A printer includes a print head for printing from a donor medium to a receiver medium, a platen member for holding the donor medium in a printing relation with the receiver medium at said print head, a pair of steering and drive rollers for feeding the receiver medium from between the steering and drive rollers, and a movable support for the platen member and the steering roller that moves the platen member towards the print head to hold the receiver medium in the printing relation with the donor medium and away from the print head to release the receiver medium from the printing relation with the donor medium and that moves the steering roller to vary a feeding angle at which the receiver medium is fed from between the steering and driver rollers. The support is movable to three positions, a print position in which the platen member is moved towards the print head to hold the receiver medium in the printing relation with the donor medium and the steering roller is moved to change the feeding angle to one for advancing the receiver medium, a feed-only position in which the platen member is moved away from the print head to release the receiver medium from the printing relation with the donor medium and the steering roller is moved to change the feeding angle to one for returning the receiver medium, and an exit position in which the platen member is moved away from the print head farther than in the feed-only position and the steering roller is moved to change the feeding angle to one for exiting the receiver medium.
摘要:
A sheet feeding device is particularly useful in feeding sheets from a stack in apparatus in which a trailing portion of the sheet is returned toward the stack as the sheet moves through a reciprocating path. Corner nails used to help prevent double feeds in the sheet feeding device are attached to a guide means positioned to guide the trailing portion above the stack. The nails and guide means float vertically with respect to the top of the stack, preventing interference between the leading edge of the sheet and the guide means and between the trailing edge of the sheet and the stack.