Photograph processor

Details Photograph processor Photograph processor

1998-04-13

1999-12-28

Metjahic, Safet

Photocopying

Projection printing and copying cameras

Identifying, composing, or selecting

355 40, 355 41, 355 27, 355 28, 355 29, 396568, 396570, 396578, 396612, 396613, G03B 2752

Patent

active

060088796

DESCRIPTION:

BRIEF SUMMARY
BACKGROUND ART

The present invention pertains to a photographic processing system which processes a sensitized material by using an exposed film and, more particularly, relates to a photographic processing system which can process a sensitized material in a proper manner even when an instantaneous voltage drop has occurred.
Conventionally, a photographic processing system is widely used, in which photographic printing paper (hereinafter referred to as the paper) serving as a sensitized material is supplied from a magazine which houses the paper in the form of a roll, images recorded on a developed film are printed on the paper in a printing section, the exposed paper is subjected to a developing process in a developing section, the paper is then dried in a drying section, cut into individual frames of specified lengths and ejected. This photographic processing system incorporates a microcomputer which operates as a control means on electric power supplied from a commercial electric-utility system and controls such operations as paper transport and printing.
In the aforementioned conventional photographic processing system, if a source voltage supplied to the microcomputer drops down to its reset voltage due to an instantaneous voltage drop caused by a lightning strike to the commercial electric-utility system or overload conditions, for instance, the microcomputer will be reset when the source voltage returns to its normal level. Should this happen, the microcomputer would "restart" from an initialization process, detect a portion of paper already supplied from the magazine and judge that a paper jam status has occurred. In such cases, an operator had to open a cover of the photographic processing system and remove the whole paper in its inside to recover from the paper jam status, making the portion of paper previously supplied from the magazine, including already processed prints, completely useless.
The invention provides a solution to the aforementioned problem. Thus, it is an object of the invention to provide a photographic processing system which can process paper in a proper manner even when an instantaneous voltage drop has occurred.


SUMMARY OF THE INVENTION

To solve the aforementioned problem, the present invention has employed the following configurations.
Specifically, the invention as defined in claim 1 provides a configuration comprising a sensitized material storage for accommodating a sensitized material wound in the form of a roll, a printing section which runs on electric power supplied from an external power source to print photographed images recorded on an exposed film, sensitized material transport means which runs on the electric power supplied from the external power source to transfer the sensitized material from the sensitized material storage to the printing section and output the sensitized material exposed with the photographed images from the printing section, and sensitized material processing control means for processing the sensitized material in accordance with its state determined at the time when the electric power begins to be supplied from the external power source.
According to this configuration, the sensitized material is handled in accordance with its state determined at the time when the external power source begins to supply the electric power. Thus, it is possible to process the sensitized material in a proper manner depending on its state at the time when the electric power begins to be supplied even when a power failure, such as an instantaneous voltage drop, has occurred during operation.
The invention provides the above configuration further comprising feeding state judging means for judging the state of feeding of the sensitized material at the time when the external power source begins to supply the electric power, wherein the sensitized material processing control means controls the feeding of the sensitized material in accordance with the state of feeding of the sensitized material.
According to this configuration, the feeding of the sensitized mater

REFERENCES:
patent: 4723153 (1988-02-01), Kogane
patent: 4862200 (1989-08-01), Hicks
patent: 4916479 (1990-04-01), Ujiie

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