Abstract Apparatus for developing a latent electrostatic image carried on an image retaining member comprising A MEMBER INCLUDING AN ELECTRICALLY CONDUCTIVE LAYER AND A DIELECTRIC LAYER HAVING A GENERALLY CONTINUOUS SURFACE FOR CARRYING TONER PARTICLES FOR THE DEVELOPMENT OF THE LATENT IMAGE, A PLURALITY OF STYLII SUPPORTED FOR RELATIVE MOVEMENT WITH THE DONOR MEMBER SPACED FROM EACH OTHER AND POSITIONED TO CONTACT THE DONOR MEMBER ENABLING ELECTROSTATIC CHARGE TO BE DEPOSITED ONTO SEPARATE, DISCRETE AREAS OF THE TONER CARRYING SURFACE OF THE DONOR MEMBER CORRESPONDING IN SIZE TO THE SURFACE AREA OF THE TIPS OF THE STYLII CREATING AN ELECTROSTATIC CHARGE PATTERN COMPRISING A PLURALITY OF LINES ON THE DONOR MEMBER UPON COUPLING THE DONOR MEMBER CONDUCTIVE LAYER AND STYLII TO AN ELECTRICAL ENERGY SOURCE AND UPON MOVING THE STYLII AND DONOR MEMBER RELATIVE TO ONE ANOTHER AND MEANS TO MOVE THE DONOR MEMBER RELATIVE TO A SUPPLY OF TONER PARTICLES FOR LOADING TONER PARTICLES ONTO THE DONOR MEMBER IN AREAS ASSOCIATED WITH THE CHARGE PATTERN OF LINES CREATED BY THE PLURALITY OF STYLII AND TO MOVE THE TONER LOADED DONOR MEMBER RELATIVE TO THE IMAGE RETAINING MEMBER FOR THE DEVELOPMENT OF THE LATENT ELECTROSTATIC IMAGE.
Apparatus for developing a latent electrostatic image carried on an image retaining member comprising a donor member including an electrically conductive layer and a dielectric layer having a generally continuous surface for carrying toner particles for the development of the latent image, a plurality of stylii supported for relative movement with the donor member spaced from each other and positioned to contact the donor member enabling electrostatic charge to be deposited onto separate, discrete areas of the tonor carrying surface of the donor member corresponding in size to the surface area of the tips of the stylii creating an electrostatic charge pattern comprising a plurality of lines on the donor member uPon coupling the donor member conductive layer and stylii to an electrical energy source and upon moving the stylii and donor member relative to one another and means to move the donor member relative to a supply of tonor particles for loading tonor particles onto the donor member in areas associated with the charge pattern of lines created by the plurality of stylii and to move the tonor loaded donor member relative to the image retaining member for the development of the latent electrostatic image.
Claim 2
Dependent Claim
196 words
Apparatus for developing a latent electrostatic image carried on an image retaining member comprising a donor member including an electrically conductive layer and a dielectric layer having a generally continuous surface for carrying toner particles for the development of the latent image, a plurality of stylii supported for relative movement with the donor member spaced from each other and positioned to contact the donor member enabling electrostatic charge to be deposited onto separate, discrete areas of the tonor carrying surface of the donor member corresponding in size to the surface area of the tips of the stylii creating an electrostatic charge pattern comprising a plurality of lines on the donor member uPon coupling the donor member conductive layer and stylii to an electrical energy source and upon moving the stylii and donor member relative to one another and means to move the donor member relative to a supply of tonor particles for loading tonor particles onto the donor member in areas associated with the charge pattern of lines created by the plurality of stylii and to move the tonor loaded donor member relative to the image retaining member for the development of the latent electrostatic image.
Claim 3
Dependent Claim
38 words
The apparatus of claim 1 including oscillating means for imparting relative movement between the stylii and donor member in a lateral coordinate generally transverse to the direction of movement between the donor member and the image retaining member.
Claim 4
Dependent Claim
22 words
The apparatus of claim 1 including an electrical energy source coupled to said stylii to maintain them at substantially the same potential.
Claim 5
Dependent Claim
26 words
The apparatus of claim 1 including an electrical energy source coupled to said stylii by means to maintain some stylii at different potentials from other stylii.
Claim 6
Dependent Claim
15 words
The apparatus of claim 1 wherein the dielectric layer of the donor member includes glass.
Claim 7
Dependent Claim
23 words
The apparatus of claim 1 wherein said donor member includes a metal drum having an outermost coating of glass comprising the dielectric layer.