Apparatus for xerographically printing a composite record based on fixed and variable data

In a xerographic printer of the class wherein information from a first informational source is printed through the process of applying a uniform electrostatic charge to a photoreceptive medium and imaging a light pattern representative of the information from said first source to form a first electrostatic image thereof, an improvement comprising means for printing information from a second complementary informational source in composite form with the information from the first source, the improvement characterized by:

• second imaging means for applying an electrostatic charge pattern representative of information from the second complementary source onto the photoreceptive medium over the first electrostatic image to form a composite electrostatic image embodying the information from both the first and second sources;
• said information from said second source being derived from a central processing unit;
• said second imaging means further including laser means responsive to informational signals from said central processing unit for providing a pattern of light energy representative thereof;
• and
• stylus means, responsive to said pattern of light energy provided by said laser means, for translating said pattern of light energy into a corresponding electrostatic charge pattern and transferring the charge pattern onto said photoreceptive medium.

Apparatus for xerographically printing information from first and second complementary informational sources onto a record medium comprising:

• a photoreceptive medium comprising an electrically conductive base layer and a photoconductive surface layer;
• charge deposit means for applying a uniform deposition of charge onto the photorespective medium;
• first imaging means for imaging a light pattern representative of information from the first source onto the charge deposition on the photoreceptive medium to form a first electrostatic image embodying the information from the first source;
• said information from said second source being derived from a central processing unit;
• second imaging means for applying an electrostatic charge pattern representative of information from the second complementary source onto the photoreceptive medium over the first electrostatic image to form a composite electrostatic image embodying the information from both the first and second sources;
• said second imaging means including laser means responsive to informational signals from said central processing unit for providing a pattern of light energy representative thereof, and stylus means, responsive to said pattern of light energy provided by said laser means, for translating said pattern of light energy into a corresponding electrostatic charge pattern and transferring the charge pattern onto said photoreceptive medium;
• said stylus means including a stratified belt mounted in close surface proximity to said photoreceptive medium;
• said stratified belt including:
• an optically translucent base stratum;
• an optically translucent, electrically conductive intermediate stratum energized at an electrical potential;
• and
• a photoconductive outer stratum formed of material optically dissimilar to said photoconductive surface layer of said photoreceptive medium;
• developing means for developing the composite electrostatic image on the photoreceptive medium;
• and
• image transfer means for transferring a developed composite image from the photoreceptive medium onto the record medium.

In a xerographic printer of the class wherein information from a first informational source is printed through the process of applying a uniform electrostatic charge to a photoreceptive medium and imaging a light pattern representative to the information from said first source to form a first electrostatic image thereof, an improvement comprising means for printing information from a second complementary informational source in composite form with the information from the first source, the improvement characterized by:

• second imaging means for applying an electrostatic charge pattern representative of information from the second complementary source onto the photoreceptive medium over the first electrostatic image to form a composite electrostatic image embodying the information from both the first and second sources;
• said information from said second source being derived from a central processing unit;
• said second imaging means further including laser means responsive to informational signals from said central processing unit for providing a pattern of light energy representative thereof and stylus means, responsive to said pattern of light energy provided by said laser means, for translating said pattern of light energy into a corresponding electrostatic charge pattern and transferring the charge pattern onto said photoreceptive medium;
• said stylus means including a stratified belt mounted in close surface proximity to said photoreceptive medium;
• said stratified belt including:
• an optically translucent base stratum;
• an optically translucent, electrically conductive intermediate stratum energized at an electrical potential;
• and
• a photoconductive outer stratum formed of material optically dissimilar to the photoconductive surface layer of said photoreceptive medium.