Facsimile and static presentation processing – Facsimile – Picture signal generator
Patent
1988-02-03
1990-02-06
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Picture signal generator
358497, 382 59, 346 76PH, H04M 104
Patent
active
048992283
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a small-sized copying apparatus, or a hand-held copier, whose main body can be manually moved to copy an original.
BACKGROUND ART
Japanese Patent Disclosure No. 55-115773 (Japanese Pat. Application No. 54-22445) discloses a manual sweeping copier whose main body is moved, thereby to copy an original. More specifically, while the copier is being manually swept, an optical element reads image data from the original. The image data is converted into digital data and written into a memory. The image data is read from the memory and is printed, thus copying the original.
The reading width of the small-sized copier disclosed in Japanese Patent Disclosure No. 55-115773 is determined by the width of the optical element, and the reading length of the copier is inevitably limited by the memory capacity of the memory. Therefore, even if the copier reads an image from an original having a width less than the reading width of the copier, it reads image data over the entire reading width. Consequently, the memory may become full before the copier is reads all image data from the original.
TECHNICAL SUBJECT
Accordingly, it is an object of the present invention to provide an apparatus which can read and store a great amount of image data even when an original has a small width, by setting a desired data-reading width, without wasting a memory region.
According to the present invention, there is provided an apparatus comprising image data-reading means, memory means for storing the image data read by the image data-reading means, designating means for designating a reading width over which image data will be read, the reading width being measured in the main scanning direction of the image data reading means, and means for writing into the memory means only the image data read by the image data reading means from a region whose width is equal to or less than the reading width designated by the reading width designating means. Since the apparatus has these components, it can read a great amount of image data by setting a desired reading width, without wasting a memory region. The apparatus of this invention has a housing and a linear scanning means arranged within the housing. The linear scanning means read image data through a image data-reading window cut in the housing. A slider is mounted on the housing, for closing the image data-reading window. Therefore, the reading width can be changed by only moving the slider, thus partly closing the window and thus setting a desired reading width, and the apparatus can read desired image data only.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view showing the outer appearance of a hand-held copier which is a first embodiment of the present invention.
FIG. 2(a) is a sectional view showing the internal structure of the copier shown in FIG. 1.
FIG. 2(b) is a sectional view, taken along line II--II in FIG. 2(a).
FIG. 3 is a perspective view showing the main components arranged within the copier.
FIG. 4 is a block diagram showing an electronic circuit.
FIG. 5 is a flow chart explaining how to write image data into an image data memory when a specific data-reading width has been set.
FIG. 6 is a flow chart explaining how to print the image data read after a data-reading width has been set.
FIG. 7 is a perspective view showing the outer appearance of a hand-held copier which is a second embodiment of the present invention.
FIG. 8 a perspective view showing the outer appearance of a hand-held copier which is a third embodiment of the present invention.
FIG. 9 is a perspective view showing the main components arranged within the copier of FIG. 8.
FIG. 10 is a perspective view showing the outer appearance of the reading section of the copier of FIG. 8.
FIG. 11 is a perspective view of a slider for closing the data-reading window of the copier shown in FIG. 8.
FIG. 12 is a block diagram showing the electronic circuit of the copier shown in FIG. 8.
DESCRIPTION OF THE PREFERRED EMBODIMENTS
The first to third embodiment
REFERENCES:
patent: 3541248 (1970-11-01), Young
patent: 3767020 (1973-10-01), Rowe
patent: 4523235 (1985-06-01), Rajchman
patent: 4626925 (1986-12-01), Toyoda
patent: 4717965 (1988-01-01), Mashiko et al.
Sano Teruo
Shioya Masaharu
Casio Computer Co. Ltd.
Coles Sr. Edward L.
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