Color highlighting electrophotographic printing machine

Claim 2

An electrostatographic printing machine of the type having successive differently colored powder images deposited on an image bearing member and means for transferring the differently colored powder images from the image bearing member to different portions of a sheet of support material, wherein the improvement includes: a receiving station; a supply station; a plurality of transport members connecting said supply station with said receiving station defining a plurality of paths therebetween; means for advancing the sheet of support material along one of said plurality of transport members from said supply station to said receiving station with a first one of said transport members moving the sheet of support material to said receiving station after the transfer of a single powder image to a first surface thereof, and a second one of said transport members recirculating the sheet of support material so that successive differently colored powder images are transferred to different portions of the first surface thereof as the sheet of support material advances from said supply station to said receiving station; means operatively associated with said advancing means, for selecting one of said plurality of transport members for moving the sheet of support material therealong; and means for inverting the sheet of support material so that said advancing means moves the sheet of support material along one of said transport members, thereby transferring at least one powder image to a second surface opposed from the first surface of the sheet of support material.

Claim 3

A printing machine as recited in claim 1, further including means for fixing substantially permanently the powder image to the sheet of support material.

Claim 4

An electrostatographic printing machine of the type having successive powder images deposited on an image bearing member and means for transferring the powder images from the image bearing member to a sheet of support material, wherein the improvement includes: a receiving station; a supply station; first tranport means for moving the sheet of support material from said supply station to the transfer means; second transport means for moving the sheet of support material from the transfer means; means for housing a sheet of support material having a powder image thereon; means for feeding the sheet of support material from said housing means; third transport means, operatively associated with said housing means, for moving the sheet of support material fed therefrom to the transfer means; fourth transport means for moving the sheet of support material to said housing means with the surface having the powder image thereon being face down; fifth movable transport means, said fifth transport means being movable to a first position connecting said second transport means with said receiving station so as to advance the sheet of support material thereto, and said fifth transport means being movable to a second position connecting said fourth transport means with said second transport means; means for moving said fifth transport means to the first position so that the sheet of support material advances to said receiving station after the transfer of a single powder image to a first surface thereof, said moving means positioning said fifth transport means in the second position so that the sheet of support material advances to said housing means with the first powder image on the first surface thereof so that said feeding means advances the sheet of support material to said third transport means which moves the sheet of support material to the transfer means permitting a second powder image to be transferred to the first surface thereof; and means for inverting the sheet of support material so as to transfer successive powder images to the second surface and the first surface thereof.

Claim 5

An electrostatographic printing machine of the type having successive powder images deposited on an image bearing member and means for transferring the powder images from the image bearing member to a sheet of support material, wherein the improvement includes: a receiving station; a supply station; first tranport means for moving the sheet of support material from said supply station to the transfer means; second transport means for moving the sheet of support material from the transfer means; means for housing a sheet of support material having a powder image thereon; means for feeding the sheet of support material from said housing means; third transport means, operatively associated with said housing means, for moving the sheet of support material fed therefrom to the transfer means; fourth transport means for moving the sheet of support material to said housing means with the surface having the powder image thereon being face down; fifth movable transport means, said fifth transport means being movable to a first position connecting said second transport means with said receiving station so as to advance the sheet of support material thereto, and said fifth transport means being movable to a second position connecting said fourth transport means with said second transport means; means for moving said fifth transport means to the first position so that the sheet of support material advances to said receiving station after the transfer of a single powder image to a first surface thereof, said moving means positioning said fifth transport means in the second position so that the sheet of support material advances to said housing means with the first powder image on the first surface thereof so that said feeding means advances the sheet of support material to said third transport means which moves the sheet of support material to the transfer means permitting a second powder image to be transferred to the first surface thereof; and means for inverting the sheet of support material so as to transfer successive powder images to the second surface and the first surface thereof.

Claim 6

An electrophotographic printing machine, including: a photoconductive member; means for charging said photoconductive member to a substantially uniform potential; means for exposing said charged photoconductive member to differently colored light images recording single color electrostatic latent images thereon; means for developing the electrostatic latent images recorded on said photoconductive member with differently colored toner particles forming differently colored toner powder images thereon; means for transferring the differently colored toner powder images from the electrostatic latent images to different portions of a sheet of support material; a receiving station; a supply station; a plurality of transport members connecting said supply station with said receiving station defining a plurality of paths therebetween; means for advancing the sheet of support material along one of said plurality of transport members from said supply station to said receiving station with a first one of said transport members moving the sheet of support material to said receiving station after the transfer of a single toner powder image to a first surface thereof, and a second one of said transport members recirculating the sheet of support material so that successive differently colored toner powder images are transferred to different portions of the first surface thereof as the sheet of support material advances from said supply station to said receiving station; means, operatively associated with said advancing means, for selecting one of said plurality of transport members for moving the sheet of support material therealong; and means for inverting the sheet of support material so that said advancing means moves the sheet of support material along one of said transport members, thereby transferring at least one powder image to a second surface opposed from the first surface of the sheet of support material.

Claim 7

An electrophotographic printing machine, including: a photoconductive member; means for charging said photoconductive member to a substantially uniform potential; means for exposing said charged photoconductive member to differently colored light images recording single color electrostatic latent images thereon; means for developing the electrostatic latent images recorded on said photoconductive member with differently colored toner particles forming differently colored toner powder images thereon; means for transferring the differently colored toner powder images from the electrostatic latent images to different portions of a sheet of support material; a receiving station; a supply station; a plurality of transport members connecting said supply station with said receiving station defining a plurality of paths therebetween; means for advancing the sheet of support material along one of said plurality of transport members from said supply station to said receiving station with a first one of said transport members moving the sheet of support material to said receiving station after the transfer of a single toner powder image to a first surface thereof, and a second one of said transport members recirculating the sheet of support material so that successive differently colored toner powder images are transferred to different portions of the first surface thereof as the sheet of support material advances from said supply station to said receiving station; means, operatively associated with said advancing means, for selecting one of said plurality of transport members for moving the sheet of support material therealong; and means for inverting the sheet of support material so that said advancing means moves the sheet of support material along one of said transport members, thereby transferring at least one powder image to a second surface opposed from the first surface of the sheet of support material.

Claim 8

A printing machine as recited in claim 4, further including means for fixing substantially permanently the toner powder image to the sheet of support material.

Claim 9

A printing machine as recited in claim 5, wherein said exposing means includes: a light source arranged to illuminate an original document disposed in the printing machine; and lens means for receiving the light rays from the original document to form a light image thereof.

Claim 10

An electrophotographic printing machine, including: a photoconductive member; means for charging said photoconductive member to a substantially uniform potential; means for exposing said charged photoconductive member to a light image recording an electrostatic latent image thereon; means for developing the electrostatic latent image recorded on said photoconductive member with toner particles; means for transferring the toner powder image from the electrostatic latent image to a sheet of support material; a receiving station; a supply station; first transport means for moving the sheet of support material from said supply station to said transfer means; second transport means for moving the sheet of support material from said transfer means; means for housing a sheet of support material having a toner powder image thereon; means for feeding the sheet of support material from said housing means; third transport means, operatively associated with said housing means, for moving the sheet of support material fed therefrom to said transfer means; fourth transport means for moving the sheet of support material to said housing means with the surface having the toner powder image thereon being face down; fifth movable transport means, said fifth transport means being movable to a first position connecting said second transport means with the receiving station so as to advance the sheet of support material thereto, and said fifth transport means being movable to a second position connecting said fourth transport means with said second transport means; means for moving said fifth transport means to the first position so that the sheet of support material advances to said receiving station after the transfer of a single toner powder image to a first surface thereof, said moving means positioning said fifth transport means in the second position so that the sheet of support material advances to said housing means with the first toner powder image on the first surface thereof so that said feeding means advances the sheet of support material to said third transport means which moves the sheet of support material to said transfer means permitting a second toner powder image to be transferred to the first surface thereof; and means for inverting the sheet of support material so as to transfer successive toner powder images to the second surface and the first surface thereof.

Claim 11

An electrophotographic printing machine, including: a photoconductive member; means for charging said photoconductive member to a substantially uniform potential; means for exposing said charged photoconductive member to a light image recording an electrostatic latent image thereon; means for developing the electrostatic latent image recorded on said photoconductive member with toner particles; means for transferring the toner powder image from the electrostatic latent image to a sheet of support material; a receiving station; a supply station; first transport means for moving the sheet of support material from said supply station to said transfer means; second transport means for moving the sheet of support material from said transfer means; means for housing a sheet of support material having a toner powder image thereon; means for feeding the sheet of support material from said housing means; third transport means, operatively associated with said housing means, for moving the sheet of support material fed therefrom to said transfer means; fourth transport means for moving the sheet of support material to said housing means with the surface having the toner powder image thereon being face down; fifth movable transport means, said fifth transport means being movable to a first position connecting said second transport means with the receiving station so as to advance the sheet of support material thereto, and said fifth transport means being movable to a second position connecting said fourth transport means with said second transport means; means for moving said fifth transport means to the first position so that the sheet of support material advances to said receiving station after the transfer of a single toner powder image to a first surface thereof, said moving means positioning said fifth transport means in the second position so that the sheet of support material advances to said housing means with the first toner powder image on the first surface thereof so that said feeding means advances the sheet of support material to said third transport means which moves the sheet of support material to said transfer means permitting a second toner powder image to be transferred to the first surface thereof; and means for inverting the sheet of support material so as to transfer successive toner powder images to the second surface and the first surface thereof.