Irregularly spacing linear portions of media sheet for optical scanning thereof
First Claim
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1. A method for optically scanning a media sheet comprising:
- effectively advancing the media sheet relative to a light source, such that the media sheet is logically divided into a plurality of linear portions, each linear portion having a plurality of positions, and the linear portions irregularly spaced relative to one another; and
, as the light source becomes incident to each position of each linear portion of the media sheet, optically detecting light reflected by the position to optically scan the position.
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Abstract
A method and apparatus for optically scanning a media sheet effectively advances the media sheet relative to a light source. The media sheet is logically divisible into linear portions. Each linear portion has a number of positions. The linear portions are irregularly spaced relative to one another. As the light source becomes incident to each position of each linear portion of the media sheet, the light reflected by the position is optically detected to optically scan the position.
7 Citations
25 Claims
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1. A method for optically scanning a media sheet comprising:
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effectively advancing the media sheet relative to a light source, such that the media sheet is logically divided into a plurality of linear portions, each linear portion having a plurality of positions, and the linear portions irregularly spaced relative to one another; and
,as the light source becomes incident to each position of each linear portion of the media sheet, optically detecting light reflected by the position to optically scan the position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for optically scanning a media sheet comprising:
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effectively advancing a media sheet by a variable amount so that a linear portion of the media sheet is incident to a light source;
optically detecting reflected light by the linear portion of the media sheet; and
,repeating effectively advancing the media sheet by the variable amount and optically detecting the reflected light until the media sheet has been completely optically scanned. - View Dependent Claims (12, 13)
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14. A method for optically scanning a media sheet comprising:
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effectively advancing a media sheet relative to a light source;
waiting for a variable length of time;
optically detecting reflected light by a linear portion of the media sheet currently incident to the light source; and
,repeating waiting for the variable length of time and optically detecting the reflected light until the media sheet has been completely optically scanned. - View Dependent Claims (15, 16)
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17. An optical scanning device comprising:
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a light source to illuminate each of a plurality of linear portions of a media sheet as each linear portion becomes incident to the light source;
a light-detecting mechanism to detect light from the light source as reflected by at least one of a plurality of positions of each linear portion of the media sheet as the positions of each linear portion of the media sheet become incident to the light source; and
,an advancement mechanism to effectively advance the media sheet relative to the light source and the light-detecting mechanism, wherein the light-detecting mechanism and the advancement mechanism functionally cooperate so that the linear portions of the media sheet are irregularly spaced relative to one another. - View Dependent Claims (18, 19, 20)
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21. An optical scanning device comprising:
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means for illuminating each of a plurality of irregularly spaced linear portions of a media sheet;
means for detecting light from the light source as reflected by each irregularly spaced linear portion of the media sheet; and
,means for effectively advancing the media sheet. - View Dependent Claims (22)
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23. An optical scanning device comprising:
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a light source to illuminate each of a plurality of linear portions of a media sheet as each linear portion becomes incident to the light source;
a light-detecting mechanism to detect light from the light source as reflected by at least one of a plurality of positions of each linear portion of the media sheet as the positions of each linear portion of the media sheet become incident to the light source; and
,an advancement mechanism to effectively advance the media sheet relative to the light source and the light-detecting mechanism, wherein the light-detecting mechanism and the advancement mechanism have a first mode of operation in which the linear portions of the media sheet are irregularly spaced relative to one another and a second mode of operation in which the linear portions of the media sheet are regularly spaced relative to one another. - View Dependent Claims (24, 25)
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Specification