Facsimile and static presentation processing – Facsimile – Recording apparatus
Patent
1988-08-08
1991-04-30
Reynolds, Bruce A.
Facsimile and static presentation processing
Facsimile
Recording apparatus
358473, 382 59, 346143, H04N 104, H04N 123, G06K 922
Patent
active
050123491
DESCRIPTION:
BRIEF SUMMARY
It is known that the reproduction of graphic symbols, ideogram texts or drawings is growing in importance in step with the development of the information field since it is becoming ever more necessary to secure selective retention of the data required, in the absence of the faculty of total recall or of the means of storing great quantities of works, trade periodicals and documentation, whose volume actually renders access to these impracticable.
Apart from photography, which is mentioned at this point only as a reminder of its applications in respect of microfilms, several satisfactory photocopying and telecopying processes are now available. These processes, of whatever type, are embodied in heavy and bulky apparatus which preclude any possibility of using them as portable devices. As a matter of fact, these devices always operate with paper of a given and commonly standardised format. It is certainly possible to reproduce a page bearing no more than one line, but this would appear on its own on a whole page as placed in the feed magazine of the machine. Some devices utilise paper which is trimmed or cut commensurately with the graphics reproduced for each photocopy, but it is difficult to envisage being able to cut the paper on the scale of a single text line in a book, magazine or periodical.
Even assuming that this would be possible and desirable, it would not be possible to accumulate and collate several lines selected at different times and originating from a variety of sources on one and the same page. It is impossible moreover for lines or parts of lines selected amongst others, for example abstracted from a paragraph, to be reproduced individually.
It has already been contemplated to miniaturise a photocopier which is in the form of a battery operated portable device, the volume of which is about that of a hair dryer and which contains a roll of `thermal` paper projecting outwards. The width of the paper is fixed and of approximately 4 cm. Its length is of course finite. To reproduce graphic matter, a small length of paper is pulled out, this is placed on the graphic matter, and held thereon firmly, after which the device is moved over the whole length of the design, which necessitates unrolling the paper which remains tensioned and held in application on the original, whilst taking care to maintain a strictly unchanged directional setting of the device with respect to the surface of the graphic matter. The latter is thus positioned under the paper but is reproduced on the paper, on the spot. The paper is severed transversely once the total length of the graphic matter has been covered in this manner.
This device also has serious shortcomings: first the reproduction quality depends on the speed at which the device is moved. The contrast is satisfactory when one acts slowly, but fades increasingly as the speed is increased, up to the point of disappearing completely. The quality varies commensurately if the speed is varied. The paper width is furthermore such that several text lines are necessarily reproduced at the same time, thereby preventing a fine selection as is always desirable upon selecting quotations or important words or passages of a text. The reproduction capacity depends on the length of the paper, and once this is used up, the device is unusable. This length being of the order of ten metres however, its reproduction capacity is of the order of fifty widths of standard A4 sheets, which is quite inadequate for professional applications. Making use of the device requires the availability of a stable, rigid and flat support, that is to say of a table or at least a small tray such as those in trains or aircraft. The device cannot be utilised in a waiting room or whilst bracing oneself against a wall or working on one's knees, since both hands are needed.
The copied graphics are present on paper strips of four centimetres width, which cannot be used for serious purposes unless they are glued on sheets or files. The reproduction principle is such that the data cannot be fed into a data ban
REFERENCES:
patent: 4523235 (1985-06-01), Rajchman
patent: 4750049 (1988-06-01), Murakami
patent: 4785357 (1988-11-01), Dreyfus
patent: 4819083 (1989-04-01), Kawai
patent: 4894730 (1990-01-01), Yanagawa
patent: 4899228 (1990-02-01), Sano
Reynolds Bruce A.
Rogers Scott A.
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