EP0267456A2
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EP
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An image reader
Assignee: Sharp Corp
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Filing: 1987-10-16
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Granted: —
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Expires: 2007-10-16
Abstract
Abstract An image reader of manual scan type is disclosed. The image reader comprises a reading head for scanning a document manually, memory means for storing image data read by the reading head, write control means for writing said image data into the memory means and a printer. The image reader further comprises image data processing means for adjusting image data obtained by the image sensor so as to form a real and necessary image upon writing image data into the memory means.
Inventors
- 👤 Hiroshi Tsujioka
- 👤 Yasufumi Yatsuzuka
- 👤 Shigeo Yoneda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 23:46
CPC Classifications
H; H04; H04N; H04N1/00; H04N1/04; H04N1/047; H04N1/10; H04N1/107; H04N1/387; H04N1/3876; H04N1/00127; H04N1/00204; H04N2201/00; H04N2201/0008; H04N2201/0034; H04N2201/0048; H04N2201/0049; H04N2201/0077; H04N2201/0082; H04N2201/024; H04N2201/028; H04N2201/03; H04N2201/031; H04N2201/03104; H04N2201/0315; H04N2201/03162; H04N2201/04; H04N2201/0402; H04N2201/0414; H04N2201/0426; H04N2201/047; H04N2201/04701; H04N2201/04703; H04N2201/0471; H04N2201/04715; H04N2201/04724; H04N2201/04729; H04N2201/04732; H04N2201/04734; H04N2201/04753; H04N2201/04758; H04N2201/04787; H04N2201/04789
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
116 words
An image reader comprising: a reading head being capable of scanning a document which is comprised of detection means for generating pulses according to the movement of the reading head and an image sensor for reading the document image in a manner synchronized with pulses generated by the detection means, memory means for storing image data obtained by the image sensor, write control means for writing said image data into the memory means, image data processing means for adjusting image data obtained by the image sensor so as to form a real and necessary image upon writing image data into the memory means, and a printer for printing out an image according to image data adjusted.
Claim 2
Dependent Claim
116 words
An image reader comprising: a reading head being capable of scanning a document which is comprised of detection means for generating pulses according to the movement of the reading head and an image sensor for reading the document image in a manner synchronized with pulses generated by the detection means, memory means for storing image data obtained by the image sensor, write control means for writing said image data into the memory means, image data processing means for adjusting image data obtained by the image sensor so as to form a real and necessary image upon writing image data into the memory means, and a printer for printing out an image according to image data adjusted.
Claim 3
Dependent Claim
31 words
An image reader according to claim 1, in which the image data processing means deletes image data of a reference line set for indicating a starting position of the manual scan.
Claim 4
Dependent Claim
70 words
An image reader according to claim 1, in which the image data processing means is comprised of count means for counting respective sums of real dot data aligned on individual bits and decision means for selecting image data contained in an area defined between two bits from each of which respective sums of real dot data decrease than a predetermined value whereby only selected image data are used upon printing.
Claim 5
Dependent Claim
33 words
An image reader according to claim 3, further comprises control means for controlling the printer so as to restrict a printing width to the width of said area defined by said decision means.
Claim 6
Dependent Claim
107 words
An image reader according to claim 1, in which said image data processing means is comprised of first and second means for finding out starting addresses of real dot data contained in the lower-most bit of image data obtained by one scan and in the upper-most bit of image data obtained by the next scan, respectively and shift means for shifting image data obtained during the next scan by a difference between said starting addresses so as to coincide the starting position of image data of the upper most bit obtained by the next scan with that of the lower most bit obtained by the preceding scan.
Claim 7
Dependent Claim
33 words
An image reader according to claim 1, in which said image data processing means further comprises means for enlarging image data obtained by the scan of a document according to a magnification designated.
Claim 8
Dependent Claim
36 words
An image reader according to claim 6, further comprises means for restricting image data to be enlarged if the height of image assumed to be enlarged exceeds the width of one printing line of the printer.
Claim 9
Dependent Claim
28 words
An image reader according to claim 1, wherein the memory means is started to memorize image data after the reading head has been moved by a predetermined distance.
References Cited (Backward Citations)
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