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US 4,865,943 AGranted
Method for forming images using free flowing photosensitive microcapsules
AssigneeThe Mead Corporation
InventorRichard F. Wright
Life of this patent
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Abstract
A method for forming images in which photosensitive microcapsules having an image-forming agent associated therewith are coated on a support as a free-flowing powder; the layer of microcapsules thus formed is image-wise exposed to actinic radiation and subjected to a uniform rupturing force to produce an image; the image may be formed directly on the support upon which the microcapsules are coated or the support may contact an image-receiving sheet to which the image is imparted.
Claims20
A method for forming images which comprises:
- depositing a uniform layer of photosensitive microcapsules on the surface of a support, said microcapsules being in the form of a free-flowing powder which is distributed upon said support but not permanently fixed thereto, said microcapsules comprising a discrete capsule wall containing a photosensitive composition and said microcapsules having associated therewith an image-forming agent,
- image-wise exposing said layer of photosensitive microcapsules to actinic radiation,
- subjecting said layer of microcapsules to a uniform rupturing force such that said microcapsules rupture and image-wise release said internal phase, and
- removing microcapsules from said support.
1 more element
A method for forming images which comprises:
- depositing a uniform layer of photosensitive microcapsules on the surface of a support, said microcapsules being in the form of a free-flowing powder which is distributed upon said support but not permanently fixed thereto, said microcapsules comprising a discrete capsule wall containing a photosensitive composition and said microcapsules having associated therewith a substantially colorless color-former,
- image-wise exposing said layer of photosensitive microcapsules to actinic radiation,
- subjecting said layer of microcapsules to a uniform rupturing force such that said microcapsules image-wise rupture and release said internal phase,
- reacting the color-former associated with said ruptured capsules with a developer material to produce a visible image, and
- removing microcapsules from said support.
2 more elements
A method for forming images which comprises:
- depositing a uniform layer of photosensitive microcapsules on the surface of a support, said microcapsules being in the form of a free-flowing powder which is distributed upon said support but not permanently fixed thereto, said microcapsules comprising a discrete capsule wall containing a photosensitive composition and said microcapsules having associated therewith an image-forming agent,
- image-wise exposing said layer of photosensitive microcapsules to actinic radiation,
- contacting said support with an image-receiving sheet,
- subjecting said layer of microcapsules to a uniform rupturing force such that said microcapsules rupture and image-wise release said internal phase, and
- removing microcapsules from said support.
2 more elements
Dependencies are inferred from the claim text.