초록 ▼

This invention relates to a non-impact printer apparatus such as a xerographic, magnetic, or ion deposition type printer in which the image is produced with a plurality of dots, which collectively combine to form the characters of a printed text or plot. The printer includes a dot forming array for

This invention relates to a non-impact printer apparatus such as a xerographic, magnetic, or ion deposition type printer in which the image is produced with a plurality of dots, which collectively combine to form the characters of a printed text or plot. The printer includes a dot forming array for selectively generating dots to form a pattern on a rotating transfer drum or belt. The drum having an image on the surface thereof, is adapted to transfer the image onto sheet material. The drum rotates through a plurality of rotations while an image is being formed thereon prior to transferring that image to a sheet. This is accomplished by selectively activating the drum charging mechanism, as well as the drum cleaning and toning mechanisms. The dot forming array may be an array of light emitting diodes and either the array or the drum are shifted between rotations to allow the same dot forming array to transfer dots to a different position during each rotation of the drum.

대표청구항 ▼

An apparatus for producing dots which forms images on a surface comprising in combination: a dot forming array for selectively generating a plurality of groups of said dots to form each image; a transfer drum rotatably mounted to receive said dots on the surface thereof from said dot forming array,

An apparatus for producing dots which forms images on a surface comprising in combination: a dot forming array for selectively generating a plurality of groups of said dots to form each image; a transfer drum rotatably mounted to receive said dots on the surface thereof from said dot forming array, said transfer drum being adapted to place said dots onto another surface; charging means for charging said drum during at least one rotation of said drum of a plurality of rotations of said drum and to be disabled during at least one of said plurality of rotation of said drum; means to shift the relative position of said dot forming array relative to said transfer drum to permit one group of said groups of dots to be generated during one of said rotations and a difference groups of said groups of dots to be generated during a different rotation of said plurality of rotations of said drum; and developer means shiftably mounted for developing an image on said transfer drum in one position and having a second position disabling said developer means from developing the image on said transfer drum; and means to shift said developer means between said one position and said second position during selected of said rotations of said drum, whereby said drum may have said dots placed thereon during said plurality of rotations of the drum.