US4034843A — Split correction ribbon and method

Claim 1

Independent Claim 182 words

A correction-imaging ribbon for use in pressure-imaging devices comprising (a) a first elongate strip of a flexible plastic film foundation having bonded to the front surface thereof a thin layer of a pressure-transferable imaging composition comprising synthetic resin binder material and coloring matter, and (b) a second elongate strip of a flexible plastic film foundation having bonded to the front surface thereof a latent adhesive layer which is substantially non-sticky to the touch but which becomes sticky under the effects of applied pressure, whereby an image formed on a copy sheet by typing aganist the back of said first elongate strip can be removed cleanly from said copy sheet by typing thereover against the back of said second elongate strip to cause the impressed area of said latent adhesive layer to stick to said image and pull it off the copy sheet, a marginal stripe of said latent adhesive layer of the second elongate strip being bonded directly to a marginal stripe of the rear surface of the plastic film foundation of the first elongate strip to provide a unitary correction-imaging ribbon.

Claim 2

Dependent Claim 182 words

A correction-imaging ribbon for use in pressure-imaging devices comprising (a) a first elongate strip of a flexible plastic film foundation having bonded to the front surface thereof a thin layer of a pressure-transferable imaging composition comprising synthetic resin binder material and coloring matter, and (b) a second elongate strip of a flexible plastic film foundation having bonded to the front surface thereof a latent adhesive layer which is substantially non-sticky to the touch but which becomes sticky under the effects of applied pressure, whereby an image formed on a copy sheet by typing aganist the back of said first elongate strip can be removed cleanly from said copy sheet by typing thereover against the back of said second elongate strip to cause the impressed area of said latent adhesive layer to stick to said image and pull it off the copy sheet, a marginal stripe of said latent adhesive layer of the second elongate strip being bonded directly to a marginal stripe of the rear surface of the plastic film foundation of the first elongate strip to provide a unitary correction-imaging ribbon.

Claim 3

Dependent Claim 30 words

A correction-imaging ribbon according to claim 1 in which the plastic film foundation of the second elongate strip is thicker than the plastic film foundation of the first elongate strip.

Claim 4

Dependent Claim 65 words

A correction-imaging ribbon according to claim 2 in which the foundation of the second elongate strip has a thickness of from about 1.0 to 5 mils and the foundation of the first elongate strip has a thickness of from about 0.25 mil to 1.5 mil, the foundation of the second strip being at least about 0.5 mil thicker than the foundation of the first strip.

Claim 5

Dependent Claim 20 words

A correction-imaging ribbon according to claim 1 in which the plastic film foundation of the first elongate strip comprises polyethylene.

Claim 6

Dependent Claim 22 words

A correction-imaging ribbon according to claim 1 in which the plastic film foundation of the second elongate strip comprises polyethylene terephthalate polyester.

Claim 7

Dependent Claim 38 words

A correction-imaging ribbon according to claim 1 in which said latent adhesive correction layer comprises a pressure-flowable adhesive resin and a non-adhesive surface material which renders the layer non-sticky to the touch in the absence of applied pressure.

Claim 8

Dependent Claim 166 words

A process for producing correction-imaging ribbons for use in pressure-imaging devices, comprising the steps of: a. producing a first elongate strip by applying a thin layer of pressure-transferable imaging composition comprising synthetic resin binder material and coloring matter to a flexible plastic film foundation; b. producing a second elongate strip by applying a latent adhesive correction layer to a flexible plastic film foundation, said layer being substantially non-adhesive to the touch but becoming sticky under the effects of applied presssure; c. superposing said first elongate strip over said second elongate strip so that a marginal stripe of the film foundation of the first strip overlaps a marginal stripe of the latent adhesive layer of the second strip; and d. applying pressure against said overlapped marginal stripes to render the marginal stripe of the latent adhesive layer of the second elongate strip sticky and cause it to bond to the marginal stripe of the film foundation of the first elongate strip to form a unitary correction-imaging ribbon.

Claim 9

Dependent Claim 166 words

A process for producing correction-imaging ribbons for use in pressure-imaging devices, comprising the steps of: a. producing a first elongate strip by applying a thin layer of pressure-transferable imaging composition comprising synthetic resin binder material and coloring matter to a flexible plastic film foundation; b. producing a second elongate strip by applying a latent adhesive correction layer to a flexible plastic film foundation, said layer being substantially non-adhesive to the touch but becoming sticky under the effects of applied presssure; c. superposing said first elongate strip over said second elongate strip so that a marginal stripe of the film foundation of the first strip overlaps a marginal stripe of the latent adhesive layer of the second strip; and d. applying pressure against said overlapped marginal stripes to render the marginal stripe of the latent adhesive layer of the second elongate strip sticky and cause it to bond to the marginal stripe of the film foundation of the first elongate strip to form a unitary correction-imaging ribbon.

Claim 10

Dependent Claim 27 words

A process according to claim 7 in which the film foundation of the second elongate strip is thicker than the film foundation of the first elongate strip.

Claim 11

Dependent Claim 37 words

A process according to claim 7 in which the latent adhesive correction layer comprises a pressure-flowable adhesive resin and a non-adhesive surface material which renders the layer non-sticky to the touch in the absence of applied pressure.

Claim 12

Dependent Claim 29 words

A process according to claim 7 in which both heat and pressure are applied in step (d) to cause said elongate strips to bond together along said marginal stripes.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1980-07-11	1981-01-10	1981-07-12	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1984-07-11	1985-01-10	1985-07-12	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1988-07-11	1989-01-10	1989-07-12	$7700.00	Window Closed / Lapsed

Split correction ribbon and method

Abstract

Inventors

Bibliographic Details

Claims Analysis

References Cited (Backward Citations)

USPTO Annuity & Maintenance Windows

Assigned Categories & Tags

Assign Category Tag