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Integrated computer Scanner printer in a single system enclosure sharing control circuitry and light source wherein a single CPU performing all of the control tasks

  • US 5,752,075 A
  • Filed: 08/07/1995
  • Issued: 05/12/1998
  • Est. Priority Date: 02/10/1993
  • Status: Expired due to Fees
First Claim
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1. An image-enhanced computer system comprising:

  • a system enclosure;

    a fixed point light source;

    a first mirror continuously rotatable for laterally scattering a light beam directed along a first light path from the light source, along a second light path within a fixed width;

    a modulator connected to the point light source and adapted for modulating the light source on and off according to an input signal;

    an electrostatic printer portion within the system enclosure including an organic photoconducting cartridge (OPC), a document handling system, and a fuser;

    scanner elements within the system enclosure including a light-intensity detector and a document support surface;

    a second mirror adapted to be moved into and out of the second path;

    a digital storage system; and

    a computer portion within the system enclosure, the computer portion comprising a CPU for operating the overall system, including the modulator and the second mirror, a system memory, a video adapter circuit coupled to an output port for a video monitor, a keyboard controller coupled to a keyboard port, a scanner drive and interface circuit, a printer drive and interface circuit, and a computer bus connecting the digital elements of the computer portion;

    wherein stored images are printed by driving the modulator to modulate the light source in an image pattern retrieved from the storage system by the computer portion, and positioning the second mirror outside the second path, such that a modulated, laterally-scanned light beam is directed on the OPC, and wherein scanning is accomplished by modulating the light source in at a fixed frequency, positioning the second mirror in the second light path such that the modulated, laterally-scanned light beam is diverted to the document support surface and the light-intensity detector, the light intensity detector producing a scanned image stored in the digital storage system.

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