Electrophotographic process of transfering colored electrostatic images

Claim 2

AN ELECTROPHOTOGRAPHIC PROCESS FOR COPYING AN ORIGINAL COMPRISED OF N DIFFERENT COLOR CONTENTS, N BEING A WHOLE INTEGER, COMPRISING THE STEPS OF: A. FORMING SEPARATE ELECTROSTATICE IMAGE ON A PHOTOSENSITICE MEMBER, EACH SAID ELECTROSTATIC IMAGE CORRESPONDING TO A DIFFERENT ONE OF SAID N DIFFERENT COLOR CONTENTS OF SAID ORIGINAL. B. DECELOPING EACH SAID ELECTROSTATIC IMAGE WITH A DEVELOPING AGENT CORRESPONDING TO THE COLOR CONTENT OF SAID ORIGINAL INVOLVED IN SAID FORMING OF SAID ELECTROSTATIC IMAGE, C. APPLYING EACH SUCH DEVELOPED IMAGE TO THE SAME EXPANSE OF A NON-ELASTIC IMAGE TRANSFER MEMBERTO FORM AMULTICOLOR IMAGE THEREON, AND D. TRANSFERRING SAID MULTICOLOR IMAGE TO A RECORDING MEM BER.

Claim 3

An electrophotographic process for copying a multicolor original, comprising the steps of: a. forming separate electrostatic images on a photosensitive member, each said electrostatic image corresponding to one selected color content of said original; b. developing each said electrostatic image with a developing agent corresponding to the color content of said original involved in said forming of said electrostatic image; c. applying each such developed image to the same expanse of non-elastic image transfer member to form a composite color image thereon; and d. transferring said composite color image to a recording member.

Claim 4

An electrophotographic process for copying a multicolor original, comprising the steps of: a. forming separate electrostatic images on a photosensitive member, each said electrostatic image corresponding to one selected color content of said original; b. developing each said electrostatic image with a developing agent corresponding to the color content of said original involved in said forming of said electrostatic image; c. applying each such developed image to the same expanse of non-elastic image transfer member to form a composite color image thereon; and d. transferring said composite color image to a recording member.

Claim 5

An electrophotographic process comprising the steps of: a. forming a first electrostatic image corresponding to a first color content of a multicolor original image on a photosensitive member comprising a substrate, a photoconductive layer overlying said substrate and an insulative layer overlying said photoconductive layer; b. developing said first electrostatic image with a developing agent of said first color; c. applying said developed first image to an expanse of a non-elastic image transfer member; d. forming on said photosensitive member a second electrostatic image corresponding to a second color content of said original image; e. developing said second electrostatic image with a developing agent of said second color; f. applying said developed second image transfer member expanse; and g. disposing on image recording member in pressure contacting relation with said image transfer member expanse, thereby providing a multicolored image of said original shape in said image recording member.

Claim 6

An electrophotographic process comprising the steps of: a. forming a first electrostatic image corresponding to a first color content of a multicolor original image on a photosensitive member comprising a substrate, a photoconductive layer overlying said substrate and an insulative layer overlying said photoconductive layer; b. developing said first electrostatic image with a developing agent of said first color; c. applying said developed first image to an expanse of a non-elastic image transfer member; d. forming on said photosensitive member a second electrostatic image corresponding to a second color content of said original image; e. developing said second electrostatic image with a developing agent of said second color; f. applying said developed second image transfer member expanse; and g. disposing on image recording member in pressure contacting relation with said image transfer member expanse, thereby providing a multicolored image of said original shape in said image recording member.

Claim 7

The process claimed in claim 3 wherein said steps of forming said electrostatic images on said Photosensitive member are performed by: a. applying a charge of one polarity to the surface of said insulative layer; and b. while exposing said photoconductive layer to a pattern of image radiation corresponding to one color content of said original image, applying to said insulative layer surface an electrostatic charge of polarity opposite to said one polarity.

Claim 8

The process claimed in claim 3 wherein said steps of forming said electrostatic images on said photosensitive member are performed by: a. applying a charge of one polarity to the surface of said insulative layer; b. while exposing said photoconductive layer to a pattern of image radiation corresponding to one color content of said original image applying to said insulative layer surface an electrostatic charge of polarity opposite to said one polarity; and exposing said photoconductive layer to unpatterned radiation.

Claim 9

The process claimed in claim 3 wherein said steps of forming said electrostatic image on said photosensitive member are performed by: a. applying a charge of one polarity to the surface of said insulative layer; and b. while exposing said photoconductive layer to a pattern of image radiation corresponding to one color content of said original image, applying to said insulative layer surface an alternating current corona discharge.

Claim 10

The process claimed in claim 3 wherein said steps of forming said electrostatic image on said photosensitive member are performed by: a. applying a charge of one polarity to the surface of said insulative layer; b. while exposing said photoconductive layer to a pattern of image radiation corresponding to one color content of said original image, applying to said insulative layer surface an alternating current corona discharge; and c. exposing said photoconductive layer to unpatterned radiation.

Claim 11

The process claimed in claim 3 wherein said color developing agents are dry color developing agents.

Claim 12

The process claimed in claim 3 wherein said color developing agents are wet color developing agents.

Claim 13

The process claimed in claim 3 further including the terminal step of fixing said multicolored image on said image recording member.

Claim 14

The process claimed in claim 3 wherein said image transfer member includes a surface film of insulative material.

Claim 15

The process claimed in claim 3 wherein said image transfer member includes a surface film of semiconductor material.

Claim 16

An electrophotographic process comprising the steps of: a. supporting for rotation a first drum bearing a surface photosensitive member comprising a substrate, a photoconductive layer overlying said substrate and an insulative layer overlying said photoconductive layer; b. disposing a second drum supported for rotation and bearing on its surface a non-elastic image transfer member in contacting relation with said first drum for rotation synchronously therewith; c. forming on said photosensitive member a first electrostatic image corresponding to a first color content of a multicolor original image; d. developing said first electrostatic image on said photosensitive member with a developer of said first color; e. rotating said first drum sufficiently to transfer said first colored image onto said image transfer member; f. repeating said image forming, image developing and first drum rotating steps in respect of a second color content of said original image, thereby transferring a second colored image onto said image transfer member in registration with said first colored image thereon; and g. further rotating said first drum while pressing a translatable image recording member into substantially line contacting relation with said second drum, thereby providing a multicolored image of said original image in said image recording member.

Claim 17

An electrophotographic process comprising the steps of: a. supporting for rotation a first drum bearing a surface photosensitive member comprising a substrate, a photoconductive layer overlying said substrate and an insulative layer overlying said photoconductive layer; b. disposing a second drum supported for rotation and bearing on its surface a non-elastic image transfer member in contacting relation with said first drum for rotation synchronously therewith; c. forming on said photosensitive member a first electrostatic image corresponding to a first color content of a multicolor original image; d. developing said first electrostatic image on said photosensitive member with a developer of said first color; e. rotating said first drum sufficiently to transfer said first colored image onto said image transfer member; f. repeating said image forming, image developing and first drum rotating steps in respect of a second color content of said original image, thereby transferring a second colored image onto said image transfer member in registration with said first colored image thereon; and g. further rotating said first drum while pressing a translatable image recording member into substantially line contacting relation with said second drum, thereby providing a multicolored image of said original image in said image recording member.