Photography – Fluid-treating apparatus – Having photographic medium feed
Patent
1996-04-23
1998-04-07
Rutledge, D.
Photography
Fluid-treating apparatus
Having photographic medium feed
G03D 308
Patent
active
057376611
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to an apparatus for processing photosensitive material (hereinafter referred to the "photo-processing apparatus"). More particularly, it relates to a photo-processing apparatus equipped with a rack part which guides and transfers photosensitive material (hereinafter referred to the "photographic paper") in the development part of the photo-processing apparatus.
BACKGROUND ART
A conventional photo-processing apparatus comprises, as shown in FIG. 4, a printing part 103 for printing images of a developed photo film F by an exposure mechanism 102 after pulling out the photographic paper 5 wound around a magazine 101 in the form of a roll, a developing part 104 for passing the photographic paper S printed by the printing part 103 in various processing tanks for development, a drying part 105 for drying the developed photographic paper S by the developing part 104, and a print-cutting part 106 for separating the photo print P of the photographic paper S dried by the drying part for each image. To the developing part 104 and the drying part 105, a submerged rack part 107 for guiding and transferring the photographic paper S and a drying rack part 108 are mounted. To each of the rack parts 107 and 108, a guide width changing mechanism is equipped for adjusting, for example, the spacing between a pair of guides for guiding both side edges of the photographic paper S with a feed screw shaft in which threads of opposite direction to each other are formed.
A conveyor drive of the photographic paper S in the developing part 104 is operated by a photographic paper detection sensor using a photo sensor or a limit switch just before the photographic paper S enters the submerged rack part 107 and is stopped after the photographic paper S is sent out to the drying part 105 via each processing tank and the last photo print P is cut off at the print-cutting part 106. If the conveyor drive is desired to be operated in other occasions such as at the time of inspection of the conveyor mechanism, the conveyor drive is forcibly operated by a key operation on the control panel. In addition, when maintenance is carried out for a guide in width change of the submerged rack part 107 or drying rack part 108, forced conveyor drive is carried out.
However, because a guide width changing mechanism is equipped, to the submerged rack part 107 and the drying rack part 108, respectively, the number of parts such as driving motors increases, giving rise to a problem of high equipment costs. The feed screw shaft must be rotated and the width of a pair of guides must be adjusted (set) individually in accordance with the width size of the photographic paper S.
As a result, there are problems that maintenance and inspection works are troublesome, and an error is likely to occur in the setting of the submerged rack part 107 and the drying rack part 108. Thus, for example, if the guide width is narrower than the normal setting in the drying rack part 108, the photographic paper S is unable to be transferred from the submerged rack part 107 to the drying rack part 108 and photographic paper S is jammed.
If the photographic paper S is jammed in the rack part in the photo-processing apparatus, the rack part is detached, the portion at which the photographic paper S is jammed is confirmed, and the jammed photographic paper is removed. However, the rack part is, in general, mounted in several pieces, and photographic paper is sometimes failed to be removed and remains in the rack part. However, the submerged rack part and drying rack part of the conventional photo-processing apparatus have no function of detecting the paper (photographic paper). Consequently, changing the width in the direction to narrow the guide width without knowing the condition that the photographic paper remains in the rack part causes the knob felt heavy in the case of the manual width changing mechanism and the presence of the photographic paper is known, but in the case of the automatic width changing mechanism, the presence of t
REFERENCES:
patent: 4903064 (1990-02-01), Kogane et al.
patent: 5134430 (1992-07-01), Koizumi
Nakai Tsutomu
Tsujita Takuya
Noritsu Koki Co., Ltd.
Rutledge D.
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