Winding – tensioning – or guiding – Coil holder or support – Spool or core
Patent
1983-02-08
1985-03-12
Levy, Stuart S.
Winding, tensioning, or guiding
Coil holder or support
Spool or core
242 671R, 242 76, G03B 104
Patent
active
045040265
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to a photographic paper rolling apparatus which rolls up the strips photographic paper used in photographic printers.
BACKGROUND ART
In a photographic printer in which a strip of photographic paper is used, the photographic paper which has been exposed is rolled up in a roll-up magazine. In order to roll up the photographic paper in the roll-up magazine, a roll-up shaft is provided inside the magazine, and the photographic paper is rolled round the roll-up shaft. In order to roll the strip of photographic paper round the roll-up shaft, a slot could be provided in the roll-up shaft. The end of the photographic paper is inserted into the slot in the shaft and fixed, and then the paper is rolled up by rotating the roll-up shaft. However, such an operation is apt to be a daylight operation when it is conducted manually, and even when it is conducted as a dark-room operation, a waste of time and photographic materials can not be avoided. When the end of the photographic paper is inserted into the slot of the roll-up shaft, in particular, a fold is made in the end and this part can not be used. Therefore, it has been common practice to roll the photographic paper firmly round the roll-up shaft several times and then roll up the paper later by using the frictional force thereof. In this case, however, it is necessary to confirm the secure rolling of the photographic paper round the roll-up shaft. Many attempts have been made to automate the rolling-up of the printing paper, as described in Japanese Patent Laid-Open No. 124,725/79, from which no satisfactory results have so far been obtained.
DISCLOSURE OF INVENTION
The present invention furnishes a photographic paper rolling apparatus an object of which is to eliminate manual operation and to save time and photographic materials. This object is accomplished by a photographic paper rolling apparatus characterized in that a guide member for the rolling of the photographic paper is provided around a roll-up shaft, in that said guide member is provided with at least three rollers, in that a spring is provided to hold said rollers inward elastically, and in that the guide member which is supported axially by the outer case is withdrawn from the roll-up shaft when a prescribed amount of photographic paper has been rolled up.
BRIEF DESCRIPTION OF DRAWINGS
FIGS. 1 and 4 each show a front view of an embodiment of the present invention;
FIGS. 2(a) and 2(b) each show an enlarged view of a roll-up shaft thereof; and
FIG. 3 is a section of the embodiment shown in FIG. 1.
BEST MODE FOR CARRYING OUT THE INVENTION
The following is a detailed explanation of the present invention with reference to the drawings.
In the drawings, a roll-up shaft 3 is located near the center of a roll-up magazine case 1, while a flange 2 rotating together with the roll-up shaft 3 is provided behind the roll-up shaft 3. The roll-up shaft 3 is covered by a removable core 4, which rotates together with the shaft 3. Power is transmitted from an external source to the roll-up shaft 3 through a gear wheel 34, and thereby the shaft 3 is rotated in the counterclockwise direction in FIG. 1.
Plate-like roll guides 5 and 6 and a lower-surface guide 7 are placed around the core 4, and the lower-surface guide 7 and the roll guide 6 are connected rotatably to each other by a pin 16 provided in an attachment plate 17, while the roll guides 5 and 6 are connected rotatably to each other by a pin 13. Roller attachment plates 12 and 14 are fixed to the roll guide 5 (a secondary guide means), while a roller attachment plate 15 is fixed to the roll guide 6 (a secondary guide means), and pins 11, 13 and 18 of first roller 8, secondary roller 9 and terminal roller 10, respectively, are supported rotatably by these attachment plates.
The pin 13 is also provided with a pressure spring 36, and the spring force of the pressure spring 36 acts in the direction in which the roll guides 5 and 6 hold down the core 4.
The lower-surface guide 7 is made one with a lower-surfac
REFERENCES:
patent: 2950873 (1957-02-01), Nelson
patent: 3057573 (1962-10-01), Kindig
patent: 4103841 (1978-08-01), Flynn et al.
patent: 4136839 (1979-01-01), Walter
patent: 4218032 (1980-08-01), Nagel et al.
Agfa-Gevaert A.G., Japanese Patent Laid Open No. 124,725/79, Published 9-27-1979.
Hokushin Electric Works, Ltd., Japanese Utility Model Laid Open No. 11736/74, Published 1-31-1974.
Hitachi Engineering Kabushiki Kaisha, Japanese Utility Model Publication No. 26289/65, Published 9-7-1965.
Mitsubishi Heavy Industries, Ltd., Japanese Patent Publication No. 1126/80, Published 1-11-1980.
Hakamada Haruo
Serizawa Moriyoshi
Bierman Jordan B.
Konishiroku Photo Industry Co,., Ltd.
Levy Stuart S.
Peters Leo J.
LandOfFree
Photographic paper rolling apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Photographic paper rolling apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photographic paper rolling apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-703890