Deformable mirror electrostatic printer

• US 4,571,603 A
• Filed: 01/10/1984
• Issued: 02/18/1986
• Est. Priority Date: 11/03/1981
• Status: Expired due to Term

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Nelson, William E., Hornbeck, Larry J., Carlo, James T.
• Primary Examiner(s): Tarcza, Thomas H.
• Application Number:
  US06/568,938
• Time in Patent Office: 770 Days
• Field of Search: 346/154, 346/153.1, 346/160, 346/76 L, 346/107, 346/108, 350/360, 354/5, 340/783
• US Class Current: 347/239
• CPC Class Codes: G01D 15/14 Optical recording elements; Recording elements using X-or nuclear radiation
• CPC Class Codes: G02B 26/0816 by means of one or more reflecting elements

Abstract

An image projection system for producing a projected image in response to electrical signals which represent the image to be projected. The projection system includes input capability to produce electrical signals in response to an image to be projected. These electrical signals are then transmitted to a light modulator which receives light from an external source. The light modulator consists of arrays of deformable mirrors which selectively deflect the light from the external source in response to the electrical signals received from the input capability. The deflected light is absorbed by opaque stops. The undeflected light travels through optics which form the projected image. A printer using this image projection system is also disclosed. The printer further includes the ability to develop the projected image in such a manner that the image is transferrable to a paper surface in a printer in such a manner that the image is reproduced upon the surface in a printer form.

Claims

1. An image projection system comprising:

input means to produce electrical signals in response to an image to be projected;

serial-to-parallel shift register to receive the electrical signal from said input means;

decoder means connected to said input means to receive electrical signals;

a plurality of light modulator means arranged in an array of columns and rows, said columns connected to said serial-to-parallel shift register and said rows connected to said decoder, said modulator means selectively deflecting external light in response to signals from said shift register and said decoder; and

optical means to project an image from said selectively deflected light.

2. An image projection system according to claim 1, wherein said serial-to-parallel shift register, said decoder, and said light modulator means are monolithically integrated on a single semiconductor substrate.

3. An image projection system according to claim 1, wherein said input means further includes means to receive data from an image projection system operator than defines the image to be projected.

4. An image projection system according to claim 1, wherein said optical means includes surface to receive the image to be projected.

5. An image projection system according to claim 1, wherein said light modulator means includes a plurality of deformable mirror devices that individually form a curved surface in response to signals from said shift register and said decoder.

6. An image projection system according to claim 5, wherein said deformable mirror devices include light stops to absorb the deflected light.

8. A printer system according to claim 1, wherein said serial-to-parallel shift register and said light modulator means are monolithically integrated on a single semiconductor substrate.

7. A printer system comprising:

input means to produce electrical signals in response to an image to be printed;

a serial-to-parallel register to receive said electrical signals;

a plurality of light modulator means connected in parallel to said serial-to-parallel register, said modulator means to selectively deflect external light in response to data from said serial-to-parallel shift register;

optical means to produce a projected image from said selected light; and

printing means to print said projected image upon a surface.

9. A printer system according to claim 7, wherein said input means further includes means to receive data from a printer system operator that defines the image to be printed.

10. A printer system according to claim 7, wherein said light modulator means includes a plurality of deformable mirror devices that individually form a curved surface in response to signals from said shift register.

11. A printer system according to claim 10, wherein said deformable mirror devices include light stops to absorb the deflected light.

12. A printer system according to claim 10, wherein said shift register provides a voltage gain to said deformable mirror devices.

13. A printer system according to claim 12, wherein said shift registers contain a greater capacitance than said deformable mirror devices.

14. A printer system according to claim 10, wherein said light modulator means includes a first set of deformable mirror devices and a second set of deformable mirror devices, the first set of mirror devices being vertically offset and laterally interspaced in relation to the second set of mirror devices.