Digital film recorder

• US 6,724,990 B2
• Filed: 08/01/2002
• Issued: 04/20/2004
• Est. Priority Date: 08/01/2002
• Status: Expired due to Fees

• Current Assignee: Eastman Kodak Company
• Original Assignee: Eastman Kodak Company
• Inventors: Fredlund, John R., Manico, Joseph A.
• Primary Examiner(s): Gray, David M.
• Application Number:
  US10/210,225
• Publication Number:
  US 20040022533A1
• Time in Patent Office: 628 Days
• Field of Search: 396/305, 396/308, 355/32, 358/501, 358/515, 369/125
• US Class Current: 396/305
• CPC Class Codes: G03B 17/00 Details of cameras or camera bodies; Accessories therefor lens hoods or caps G03B11/04
• CPC Class Codes: H04N 1/00249 with a photographic apparatus, e.g. a photographic printer or a projector photographic apparatus per se G03B, G03D
• CPC Class Codes: H04N 1/0027 Reading or writing of non-image information from or to a photographic material, e.g. processing data stored in a magnetic track
• CPC Class Codes: H04N 1/00275 Recording image information on a photographic material
• CPC Class Codes: H04N 1/036 for optical reproduction
• CPC Class Codes: H04N 1/12 using the sheet-feed movement or the medium-advance or the drum-rotation movement as the slow scanning component, e.g. arrangements for the main-scanningsheet-feed movement by translatory movement of a flat picture-bearing surface H04N1/1008; main-scanning using oscillating or rotating mirrors H04N1/113; using multi-element arrays H04N1/19
• CPC Class Codes: H04N 1/192 Simultaneously or substantially simultaneously scanning picture elements on one main scanning line
• CPC Class Codes: H04N 2101/00 Still video cameras
• CPC Class Codes: H04N 2201/0058 Docking-station, cradle or the like
• CPC Class Codes: H04N 2201/0082 Image hardcopy reproducer H04N2201/0091 - H04N2201/0094 take precedence

Abstract

A digital film recorder for recording a digital image on a strip of photographic film includes a light tight housing; a cartridge chamber in the housing for receiving a cartridge of unexposed photographic film; a film receiver in the housing for receiving the film strip from the cartridge, a write head located in the housing between the cartridge chamber and the film receiver, the write head including a linear array of pixels for exposing the film strip a line at a time across the width of the film strip; a film transport for moving the film from the cartridge to the film receiver a line at a time; control electronics for receiving the digital image and controlling the film transport and the write head to write the digital image on the film strip as a plurality of color separations including at least one positive human readable image.

Claims

1. A digital film recorder for recording a digital image on a strip of photographic film, comprising:

a) a light tight housing;

b) a cartridge chamber in the housing for receiving a cartridge of unexposed photographic film;

c) a film receiver in the housing for receiving the film strip from the cartridge;

d) a write head located in the housing between the cartridge chamber and the film receiver, the write head including a linear array of pixels for exposing the film strip a line at a time across the width of the film strip;

e) a film transport for moving the film from the cartridge to the film receiver a line at a time; and

f) control electronics for receiving the digital image and controlling the film transport and the write head to write the digital image on the film strip as a plurality of color separations including at least one positive human readable image and a timing track for assisting in the readout of the recorded image.

2. The film recorder claimed in claim 1, further comprising a portable power supply.

3. The film recorder claimed in claim 1, wherein the linear array of pixels is an array of light emitting diodes.

4. The film recorder claimed in claim 1, wherein the light emitting diodes are OLEDs.

5. The film recorder claimed in claim 1, wherein the linear array is a light valve with a back light source.

6. The film recorder claimed in claim 1, wherein the linear array emits a narrow bandwidth of light.

7. The film recorder claimed in claim 1, wherein the color separations are a luminance image and one or more lower chrominance images.

8. The film recorder claimed in claim 7, wherein the luminance image has a higher spatial resolution than the chrominance images.

9. The film recorder claimed in claim 7, wherein the luminance image has a larger bit depth resolution than the chrominance images.

10. The film recorder claimed in claim 1 wherein the color separations are cyan, magenta, yellow, and black.

11. The film recorder claimed in claim 1 wherein the color separations are positive images.

12. The film recorder claimed in claim 1, wherein the film transport includes a stepper motor.

13. The film recorder claimed in claim 1, wherein the control electronics causes the write head to write calibration information in the form of an exposure series for assisting in the readout of the recorded image.

14. The film recorder claimed in claim 13, wherein the control electronics drives the write head to write a bar code containing code values used to create the calibration information.

15. The film recorder claimed in claim 1, wherein the linear array has a lower resolution than the digital image, and the control electronics further includes means for generating a lower resolution image and a delta image representing the difference between the lower resolution image and the digital image, and means for writing both the lower resolution image and the delta image.

16. The film recorder claimed in claim 1, further including a read head located in the housing between the cartridge chamber and the film receiver, the read head including a linear array of pixels for sensing light transmitted through the film strip a line at a time across the width of the film strip, whereby the film recorder can also function as a film scanner.

17. The film recorder claimed in claim 16, wherein the read head is located opposite the write head, and the write head functions as a light source for the read head.

18. The film recorder claimed in claim 17, wherein the control electronics includes means for calibrating the write head output using the read head.

19. The film recorder claimed in claim 18, wherein the calibration includes detecting defective pixels in the write head, and wherein the write head includes additional pixels and the control electronics drives the additional pixels to write information intended for the defective pixels at an outer edge of the image.

20. The film recorder claimed in claim 17, wherein the control electronics drives the write head to write calibration information in the form of an exposure series on the film for assisting in reading out the image on the film.

21. The film recorder claimed in claim 17, wherein the control electronics drives the write head to write alpha numeric and machine readable data on the film.

22. The film recorder claimed in claim 17, wherein the control electronics drives the write head to write a single line across the film that can be used to sense skew of the write head with respect to the film in a film scanner.

23. The film recorder claimed in claim 1, further comprising a magnetic write head for writing information on a magnetic layer on a photographic film.

24. The film recorder claimed in claim 1, wherein the control electronics drives the write head to write a bar code containing resolutions of the color separations, or coordinates of a color space represented by the color separations.

25. The film recorder claimed in claim 1, wherein the control electronics drives the write head to write human readable text.

26. The film recorder claimed in claim 1, wherein the write head contains defective pixels and additional pixels and the control electronics drives the additional pixels in the write head to write information intended for the defective pixels at an outer edge of the image.