Imaging device and method for developing, duplicating and printing graphic media

• US 5,414,262 A
• Filed: 11/05/1993
• Issued: 05/09/1995
• Est. Priority Date: 10/16/1990
• Status: Expired due to Fees

• Current Assignee: Dittler Brothers, Inc. (RR Donnelley & Sons Company)
• Original Assignee: Dittler Brothers, Inc. (RR Donnelley & Sons Company)
• Inventors: Filo, Andrew S.
• Primary Examiner(s): Berman, Jack I.
• Application Number:
  US08/148,759
• Time in Patent Office: 550 Days
• Field of Search: 250/316.1, 250/317.1, 250/271, 273/139, 283/85, 283/903
• US Class Current: 250/316.1
• CPC Class Codes: B41M 5/26 Thermography B41M5/20, B41M5/24 take precedence; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used B23K takes precedence; thermographic or photothermographic systems using noble metal compounds G03C1/494
• CPC Class Codes: B41M 5/48 combined with other image registration layers or compositions; Special originals for reproduction by thermography
• CPC Class Codes: G07B 15/063 using wireless information transmission between the vehicle and a fixed station identification of vehicles G08G
• CPC Class Codes: G07C 15/005 with dispensing of lottery tickets
• CPC Class Codes: H04N 1/00795 Reading arrangements details of scanning heads H04N1/024; scanning arrangements therefor H04N1/04
• CPC Class Codes: H04N 1/00803 Presence or absence of information
• CPC Class Codes: H04N 1/00806 According to type of the original, e.g. colour paper or transparency, or reading a plurality of different types of original
• CPC Class Codes: H04N 1/02865 using an array of light sources or a combination of such arrays, e.g. an LED bar
• 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 1/128 using a scanning head arranged for linear reciprocating motion
• CPC Class Codes: H04N 1/2323 according to characteristics of the reproducing medium, e.g. type, size or availability
• CPC Class Codes: Y10S 283/903 Lottery ticket

Abstract

The present invention provides an imaging device and method for developing, duplicating and printing graphic media. The imaging device of the present invention is utilized in devices such as copiers, printers, game cards and the like, and comprises a substrate bearing an infrared image producing layer, a thermal image forming layer and a light source. A brief but intense flash of visible light from the light source causes latent heat properties of the infrared layer to generate heat and convert visible light into far infrared light. This far infrared light develops or marks portions of the thermal layer which are adjacent the infrared layer.

Claims

1. Apparatus for reproducing an image, comprising:

a substrate;

an image on the substrate, the image being responsive to visible light applied thereto for converting the applied visible light into infrared light;

means for applying pulses of visible light to the image on the substrate, the intensity and duration of the applied pulses being controlled to result in the conversion of said pulses into an infrared light replica of said image; and

an image forming layer responsive to said infrared light replica to develop a visible replica of said image.

2. The apparatus of claim 1, wherein said means for applying pulses of visible light further comprises:

means for emitting pulses of visible light without substantial infrared content.

3. The apparatus of claim 1, wherein said image forming layer is disposed between said source and said image.

4. The apparatus of claim 3, wherein said image forming layer is positioned on said image.

5. The apparatus of claim 3, wherein said image forming layer further comprises:

a translucent layer responsive to said infrared light replica to develop a portion of said image forming layer by darkening.

6. A method for reproducing an image, comprising the step of:

applying pulses of visible light to the image on a substrate, the intensity and duration of the applied pulses being controlled to result in the conversion of the pulses into an infrared light replica of said image; and

applying the infrared light replica of the image to a thermographic layer to develop a visible replica of said image.

7. The method of claim 6, wherein the step of applying pulses of visible light further comprises the step of:

emitting pulses of visible light without substantial infrared content.

8. The method of claim 6, wherein the step of applying the infrared light replica of the image to a thermographic layer further comprises the step of:

darkening a portion of a translucent thermographic layer in response to said infrared light replica to develop the image.

9. Apparatus for reproducing an original image, comprising:

light source means for applying visible light to the original image;

means, mounted for motion with respect to the original image and responsive to energy from the original image resulting from the application of visible light thereto, for producing a pattern of infrared energy related to the original image; and

thermographic means for developing a visible copy of the original image in response to the pattern of infrared energy.

10. The apparatus of claim 9, wherein the means for converting the applied pulses of visible light into a pattern of infrared light further comprises:

detector means for producing an image signal in response to energy from the original image; and

print head means for producing the pattern of infrared energy in response to the image signal.

11. The apparatus of claim 10, wherein the print head means further comprises:

printing means for operating the light source means to produce the pattern of infrared energy.

12. The apparatus of claim 11, wherein the printing means further comprises:

printing element means for converting a pattern of visible light into the pattern on infrared energy; and

means for operating the light source means to apply the pattern of visible light to the printing element means.

13. The apparatus of claim 12, wherein the light source further comprises:

a scan head mounted for motion in between the original image and the thermographic means;

a plurality of light emitting devices mounted on the scan head; and

means for illuminating the light emitting devices.

14. The apparatus of claim 13, wherein the scan head further comprises:

means for mounting the light emitting devices on a first side of the scan head to apply visible light directly to the original image; and

transparent means for conducting visible light from the light emitting devices to a second side of the scan head to apply visible light to the printing element means.

15. The apparatus of claim 10, wherein the detector means further comprises:

means for detecting the energy from the original image to produce an analog image signal;

means for converting the analog image signal into a digital image signal; and

means for producing the image signal from the digital image signal.

16. The apparatus of claim 15, wherein the detector means further comprises:

means for storing the digital image signal.

17. The apparatus of claim 10, wherein the original image is formed of IR ink and the detector means further comprises:

IR detector means for detecting infrared energy to produce the image signal.

18. The apparatus of claim 10, wherein the detector means further comprises:

visible light detector means for detecting visible light to produce the image signal.

19. The apparatus of claim 9, wherein the thermographic image forming means further comprises:

a translucent layer responsive to the infrared light to develop a portion of the layer by darkening.

20. The method of reproducing an original image, comprising the steps of:

applying first pulses of visible light to the original image;

converting the applied first pulses of visible light into a pattern of infrared energy related to the original image; and

developing a visible copy of the original image in response to the pattern of infrared energy.

21. The method of claim 20, wherein the step of converting the applied first pulses of visible light into a pattern of infrared energy further comprises the steps of:

producing an image signal in response to energy from the original image; and

producing the pattern of infrared energy in response to the image signal.

22. The method of claim 21, wherein the step of producing the pattern of infrared energy in response to the image signal further comprises the step of:

applying second pulses of visible light to a printing element in response to the image signal; and

converting the second pulses of visible light into the pattern of infrared energy.

23. The method of claim 22 further comprising the step of:

operating a light source to produce the first and second pulses of visible light.

24. The method of claim 23, wherein the step of operating the light source further comprises the steps of:

mounting a plurality of light emitting devices for motion in between the original image and the visible copy; and

illuminating the light emitting devices.

25. The method of claim 24, wherein the step of operating the light source comprises the steps of:

mounting the light emitting devices on a first side of a scan head to apply the first pulses of visible light directly to the original image; and

conducting visible light from the light emitting devices to a second side of the scan head to produce the visible copy.

26. The method of claim 21, wherein the step of producing the image signal further comprises the steps of:

detecting energy from the original image to produce an analog image signal;

converting the analog image signal into a digital image signal; and

producing the image signal from the digital image signal.

27. The method of claim 26, wherein the step of producing the image signal further comprises the step of:

means for storing the digital image signal before the image signal is produced.

28. The method of claim 21, wherein the step of producing the image signal further comprises the step of:

detecting infrared energy from the original image.

29. The method of claim 21, wherein the step of producing the image signal further comprises the step of:

detecting visible light from the original image.

30. Imaging apparatus, comprising:

a source of visible light;

means for converting the visible light into a pattern of first infrared energy;

thermographic means for forming a visible image in response to the pattern of first infrared energy;

a source of second infrared energy;

means for converting the second infrared energy into a second pattern of infrared energy to provide verification of the visible image.

31. The apparatus of claim 30, wherein the means for converting the second infrared energy further comprises:

a pattern of areas of infrared ink and non-infrared ink.

32. The apparatus of claim 31, wherein the means for converting the visible light into a pattern of first infrared energy further comprises:

an infrared ink image.

33. The apparatus of claim 32, wherein the means for converting visible light into a pattern of first infrared energy further comprises:

a substrate supporting the infrared ink image.

34. The apparatus of claim 33, wherein the source of visible light further comprises:

means for providing pulses of visible light to the infrared ink image and substrate.

35. The apparatus of claim 34, wherein the means for providing pulses of visible light further comprises:

means for controlling the intensity and duration of the pulses of visible light applied to the infrared ink image and the substrate so that pattern of first infrared energy represents a replica of the image.

36. The apparatus of claim 35, further comprising:

masking means for rendering the infrared ink image not visible.

37. The apparatus of claim 36, wherein the masking means further comprises:

a masking layer obscuring the infrared ink image.

38. The apparatus of claim 37, wherein the masking layer further comprises:

a masking pattern of non-infrared ink.

39. The apparatus of claim 30, wherein the means for converting the additional infrared energy into the second pattern of infrared energy further comprises:

a pattern of infrared ink.

40. The apparatus of claim 39, wherein the means for converting the additional infrared energy into the second pattern of infrared energy further comprises:

means for rendering the pattern of infrared ink not visible.

41. The apparatus of claim 40, wherein the means for rendering the pattern of infrared ink not visible further comprises:

a masking pattern of non infrared ink.

42. The apparatus of claim 30, wherein the source of additional infrared energy further comprises:

a plurality of infrared light emitting devices.

43. The apparatus of claim 30, wherein the imaging apparatus further comprises:

means in response to the second pattern of infrared energy for providing voice information relating to said visible image.

44. The apparatus of claim 30, wherein the thermographic means further comprises:

a heat sensitive layer positioned between the source of visible light and the infrared ink image.

45. A method of producing a verified image, comprising the steps of:

converting visible light into a first pattern of infrared energy;

thermographically forming a visible image in response to the first pattern of infrared energy; and

converting additional infrared energy into a second pattern of infrared energy to provide verification of the visible image.

46. The method of claim 45, wherein the step of converting the second infrared energy further comprises the step of:

providing a pattern of areas of infrared ink and non-infrared ink.

47. The method of claim 46, wherein the step of converting the visible light into a first pattern of infrared energy further comprises the step of:

providing an infrared ink image.

48. The method of claim 47, wherein the step of converting visible light into a first pattern of infrared energy further comprises the step of:

supporting the infrared ink image on a substrate.

49. The method of claim 48, wherein the step of converting visible light further comprises the step of:

providing pulses of visible light to the infrared ink image and substrate.

50. The method of claim 49 wherein the step of providing pulses of visible light further comprises the step of:

controlling the intensity and duration of the pulses of visible light applied to the infrared ink image and the substrate so that pattern of first infrared energy represents a replica of the image.

51. The method of claim 45, wherein the step of thermographically forming a visible image further comprises the step of:

positioning a heat sensitive layer between the source of visible light and the infrared ink image.

52. The method of claim 51, further comprising the step of:

rendering the infrared ink image not visible.

53. The method of claim 52, wherein the step of rending the infrared ink image not visible further comprises the step of:

obscuring the infrared ink image with a masking layer.

54. The method of claim 53, wherein the step of rending the infrared ink image not visible further comprises the step of:

masking the pattern of infrared ink with a masking pattern of non-infrared ink.

55. The method of claim 45, wherein the step of converting additional infrared energy into a second pattern of infrared energy further comprises the step of:

illuminating a plurality of infrared light emitting devices.

56. The method of claim 45, further comprises the step of:

generating voice information relative to said visible image in response to the second pattern of infrared energy.