Photocopying – Projection printing and copying cameras – Copying both sides of original
Patent
1995-03-07
1998-12-29
Moses, R. L.
Photocopying
Projection printing and copying cameras
Copying both sides of original
355 23, G03B 2732, G03B 2752
Patent
active
058546707
DESCRIPTION:
BRIEF SUMMARY
SUMMARY OF THE INVENTION
An object of the present invention is to provide an image forming device which is able to manually and automatically ("manually" means that turning pages of the originals and reloading them at a certain angle in a registered position are accomplished by user's hands, and "automatically" means that the above work is fully conducted by the said device, thereinafter) carry out image formation from both unbound and bound originals - documents and books).
Another Object of the present invention is to provide an image forming device which has capability and flexibility of handling various binding types of the bound originals which may be made in all kinds of irregular sizes, and once opened at 180.degree. angle, either freely staying fiat or having heavy distortion of opened pages or even turned to be folded back due to binding tension once holding force withdrawn, for both automatic and manual image formation.
Another object of the present invention is to provide an image forming device which can also easily conduct both automatic and manual image formation from the unbound originals with little volume limits for each single loading of the originals and will never jam the originals.
Another object of the present invention is to provide an image forming device which has a means capable of monitoring the set-up of the originals in different sizes so that the image orientation. Field and size of the originals can be visibly adjusted before starting an image recording process.
Another object of the present invention is to provide an image forming device which has a means able to preset an image field in desired size for the image formation, to eliminate the dark edge effect caused by different intensity of reflected image light from images of both originals and the edges around the originals within a fixed image aperture and to prevent dark edge shadows from forming on recording media with transferred images, and a wasteful consumption of toner and a pollution of the transfer charger can also be avoided.
A feature of the present invention is that the image forming device has both unbound and bound originals all face-up loaded at certain angles on a table-like frame of the said device, instead of conventionally face-down loaded on a platen.
Another feature of the present invention is that the said image forming device comprises an image forming housing with a side platen and a bottom platen facing down, a flexible dual direction lens system, a set of beam splitting mirrors and a set of reflecting mirrors for guiding the reflected image light from the said originals, and two groups of illuminating lamps. For the unbound originals and the bound originals face-up opened at 180.degree. angle, only a face-down vertical lens unit is used to carry out the image formation. Once the bound originals are positioned at a certain angle of less than 180.degree., two lens units can be used in turn to carry out the dual direction image formation. (As different embodiments of the present invention, the dual direction lens system can be constructed with two lens units at different angles or one rotatable lens unit with angled positions ranged widely, and for convenience of presenting this invention. the two lens units orientated at 90.degree. angle is recited. On the other hand. each one of the two lens units can be formed with a group of either positive or negative lenses or with a combination of the both. In this presentation of the present invention, two negative lens units are recited, thereinafter).
Another feature of the present invention is that the said image forming device has capability of freely forming enlarged or reduced images from both bound and unbound originals with stepless magnification or reduction by using the focus-adjustable vertical lens unit and/or positioning the originals at different distances from the bottom platen of the said device.
Another feature of the present invention is that the said image forming device comprises a movable loading table-like frame to vertically handle th
REFERENCES:
patent: 4585334 (1986-04-01), Malyon
patent: 4645332 (1987-02-01), Malyon
patent: 4704814 (1987-11-01), Folkins
patent: 4912507 (1990-03-01), Kinoshita
patent: 5689348 (1997-11-01), Takahashi et al.
Moses R. L.
Virmani Shival
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