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Photo-erasable data processing forms
| Details |
Inventors: Nohr, Ronald Sinclair; MacDonald, John Gavin; Mosehauer, Michael Wilfred;
Assignee: Kimberly-Clark Worldwide, Inc. (Neenah, WI)
Primary Examiner: Fridie, Jr.; Willmon
Assistant Examiner:
Attorney, Agent or Firm: Jones & Askew
A data processing form for use with photo-sensing apparatus that detect the presence of indicia at indicia-receiving locations on the form. The form is composed of a sheet of carrier material and plurality of indicia-receiving locations. The indicia-receiving locations are defined by a mutable colored composition including a mutable colorant and an ultraviolet radiation transorber such that the indicia-receiving locations are adapted to become substantially undetectable by photo-sensing apparatus upon irradiating the colored composition with ultraviolet radiation at a dosage level sufficient to irreversibly mutate the colorant. The colored composition may be irradiated with radiation in the ultraviolet region of the ultraviolet spectrum. Also disclosed is a data processing form that includes a plurality of mutable indicia, at least a portion of which are adapted to become substantially undetectable by photo-sensing apparatus upon irradiation with an effective dosage level of ultraviolet radiation such as, for example, ultraviolet radiation. One embodiment of the present invention encompasses a method for improving the readability of a data processing form used in photo-sensing apparatus. Another embodiment of the present invention encompasses a method of modifying indicia on a data processing form used in photo-sensing apparatus. |
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DETAILED DESCRIPTION OF THE INVENTION The present invention relates in general to a data processing form for use with photo-sensing apparatus that detect the presence of indicia at indicia-receiving locations on the form.
The term "data processing form" and such variations including "scannable form", "readable form", "scannable document" used herein refer to a document, sheet, label, card, tag, sticker or the like intended to hold information for detection by photo-sensing apparatus.
A data processing form may exist as an individual object or it may be combined with or attached to items such as, for example, containers, vehicles, parts, inventory, equipment, packages and the like.
Data processing forms can have many applications, including but not limited to, answer sheets, census forms, medical forms, identification cards, admission cards, admission tickets, credit cards, monetary instruments, checks, transportation tickets, coupons, bar code labels, bills, tags, or the like.
As used herein, the term "indicia" refers to markings such as, for example, dots, shapes, alpha-numeric characters, lines, bars or the like that have sufficient size, contrast and/or intensity to be detectable by photo-sensing apparatus.
As used herein, the term "indicia-receiving location" refers to a discrete area of a data processing form that defines a space where indicia may be placed for detection by photo-sensing apparatus.
Such an area may be single, plural, ordered or patterned and can be referenced to control or reference marks used by a photo-sensing apparatus.
Inks, dyes and/or other materials may be used to distinguish such an area from other areas of a data processing form.
As used herein, the term "photo-sensing apparatus" refers to conventional optical or conductive indicia (e.
g.
, mark) scanning systems used to read data from data processing forms.
Generally speaking, at least two distinct "photo-sensing" or optical scanning methods are used to detect the presence of indicia or other marks placed in response areas on data processing forms
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