JP2608706B2 - Photographic paper transport device in printer - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for transporting photographic paper in a printer.

[Conventional technology]

Conventionally, in printers, that is, printing machines, the exposed photographic paper is guided to the exit drive roller by a guide to form a loop. Inevitably, the photographic printing paper passes through the narrow gap of the guide, so that there is a problem that the number of scratches increases.

[Problems to be solved by the invention]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a photographic paper transport apparatus in which passage between guides that cause scratches is minimized.

[Means for solving the problem]

According to the present invention, in order to achieve the above object, the leading end of the printing paper sent out by a delivery roller that sends out the printing paper intermittently and continuously from the exposure unit is carried in to the developing machine side. The photographic paper transport device for transporting the rollers to the rollers is constituted by a rotating frame substrate, a rotating frame substrate returning member, and a rotating frame substrate temporary holding member, and the rotating frame substrate includes a delivery roller, a loading roller, Between the feed roller and the carry-in roller in a projected view, and urged by a biasing member such that the lower side is rotated so as to approach the carry-in roller side. In the moving roller mounting arm, the shaft of which is protruded from the upper side to the side, and which is protruded from the lower side in the direction opposite to the rotation fulcrum shaft, the moving roller is fixed, and the driven gear is driven at one end. The fixed shaft is rotatably supported, and A pressing roller supporting frame rotatably supporting a moving pressing roller provided with a one-way clutch for holding the leading end of the photographic paper in cooperation with the moving roller, via a supporting flexure for supporting the frame. A driving member is disposed to press and separate the moving pressure contact roller from the moving roller, and a receiving portion is further protruded from the upper portion, and the driven gear has a lower portion of the rotating base substrate. When it is brought close to the feed roller side, it meshes with the first drive gear fixed to the shaft of the feed roller to rotate the moving roller, and when it comes close to the carry-in roller side, it is fixed to the shaft of the carry-in roller. The driving member meshes with the second driving gear, rotates the moving roller, and presses and separates the moving pressure contact roller from the moving roller. When it comes into contact with the moving roller, it operates so as to press the moving roller against the moving roller. The operating member abuts against the receiving portion of the rotating platform substrate during operation, and is biased so that the lower side approaches the loading roller. The lower portion of the rotating platform substrate is biased so as to approach the delivery roller. An arm rod for rotating the rotating frame substrate against the rotating frame substrate.The rotating frame substrate returning member operates after the moving pressure contact roller is separated from the moving roller, and The lower side is brought close to the feed roller side, and a sensor installed between the feed roller and the moving roller / moving pressure roller detects the leading edge of the photographic paper, and the moving roller and the moving pressure roller sandwich the leading end. The operation is stopped after a lapse of time until the rotation gantry board is in a free state, and the rotation gantry board temporary stop member rotates the rotation gantry board from the delivery roller side to the loading roller by a required angle. When the photographic paper is cut by the cutter at the end of printing, or when photographic paper capable of continuous development processing is stored after the rotation of the rotating gantry substrate stops, the rotating gantry substrate , The suspension of the temporary stop is released.

[Action]

The transport device for the photographic paper in the printer according to the present invention is configured as described above, and the moving roller of the rotating gantry substrate that waits for the leading end of the photographic paper continuously fed by the delivery roller or the like of the exposure unit. And the rotating press substrate is rotated by the urging force while the pinching is performed, and the moving roller and the moving press roller are moved toward the developing device side to print from the exposure unit to the developing device side. Although the paper is transported, the moving roller and the moving pressure contact roller are temporarily stopped at a predetermined position together with the rotating gantry substrate in the middle of the transport, so the photographic paper sent from the exposure unit is A hanging loop will be formed.
When the photographic paper is cut manually at the end of printing,
Alternatively, when photographic paper that can be processed is stored following printing, the moving roller and the moving pressure contact roller begin to move with the rotation of the rotating base substrate to the developing machine side while holding the leading end of the photographic paper, and the developing machine When the leading edge of the photographic paper is fed to the carry-in roller on the developing device side to the position of the carry-in roller on the developing device side, and the carry-in roller on the developing device receives the photographic paper, the press-contact state between the moving roller and the moving pressure contact roller is released. In this released state, the moving roller and the moving pressure roller return to the original position by the rotating gantry substrate that is rotated by the operation of the rotating gantry substrate returning member, and the next printing paper is sent. To wait.

By repeating the above operation, the photographic paper is transported.

〔Example〕

Embodiments of the present invention will be described in detail with reference to the drawings.

In the drawing, reference numeral 1 denotes a delivery roller which is intermittently driven at a predetermined time by a stepping motor (not shown) from the exposure unit, and reference numerals 2 and 3 intermittently from the exposure unit in cooperation with the delivery roller 1. Reference numeral 4 denotes a first driving gear, and reference numerals 5 and 5 denote sensors for detecting the leading end of the photographic paper P sent out in the conveyance path of the photographic paper P. It is.

Reference numeral A denotes a rotating frame substrate for transporting photographic paper, and a moving roller mounting arm 6 protrudes from a lower side of the rotating frame substrate A. The driven gear 7 meshing with the
The first driving gear 4 rotates the movable roller 8 via the driven gear 7 by rotatably supporting the shaft 9 to which is fixed. Reference numeral 10 denotes a moving pressure roller which is provided with a one-way clutch and is pressed against and separated from the moving roller 8. The moving pressure roller 10 is attached to a moving pressure roller supporting frame 11 attached to a support fork 12. The base 12 ′ of the supporting bend 12 is rotatably mounted on the base 12.
13 as a drive member for pressure contact and separation mounted on
Is fixed to the substrate 14 which is swung.

Further, on the side of the upper part of the main body of the rotating base substrate A, a turning fulcrum shaft 15 of the rotating base substrate A is projected so as to penetrate the main body from the side. The tip of the pivoting fulcrum shaft 15 protruding from the opposite side is provided so that the pivoting gantry A is always rotated counterclockwise as viewed from the direction of the arrow (the side of the pivoting gantry A). A biasing spring or balance weight 16 is mounted. Further, a receiving portion 17 projects upward from the upper part of the main body of the rotating frame substrate A, and is fixed to the shaft of a rotating frame substrate A returning motor 18 as a rotating frame substrate A returning member. A pressing rod 20 protruding from the arm rod 19 is brought into contact with the receiving rod portion 17. Accordingly, the rotation gantry board A is pressed by pressing the receiving rod portion 17 provided above the rotation gantry board A with the pressing rod 20 protruding from the arm rod 19 by driving the return motor 18. The rotating gantry substrate A is rotated clockwise around the rotating fulcrum shaft 15 against the biasing force of the spring or the balance weight 16.

21 is a rotating frame substrate holding solenoid as a rotating frame substrate temporary holding member used to temporarily hold the rotating frame substrate A, 22 is a carry-in roller provided on the developing machine side, 23 is a second drive for driving the carry-in roller.
Driving gears 24 and 25 are press-contact rollers for carrying the photographic paper P into the developing machine in cooperation with the carry-in roller 22, and 26 is a sensor provided on the developing machine side for detecting the leading end of the photographic paper P.

This embodiment is configured as described above, and its operation will be described.

First, in a state where the moving pressure contact roller 10 is pressed against the moving roller 8, the driven gear 7 provided on the shaft 9 of the moving roller 8 meshes with the first driving gear 4 as described later, and the moving roller 8 is driven. The moving pressure roller 10 which is rotated by the gear 7 and is in pressure contact with the moving roller 8 is also on standby while rotating. This position is called an X position.

At the X position, the rotating base substrate A on which the moving roller 8 and the moving pressure contact roller 10 are mounted is an arm rod provided on the shaft of the returning motor 18 while the returning motor 18 is stopped. The pressing rod 20 protruding from the base 19 abuts on the receiving rod 17 protruding above the rotary gantry substrate A, and the rotary gantry A is biased by a spring or balance weight 16 serving as an urging member.
, And the movable roller 8 and the movable pressure roller 10 are in standby at the X position.

When the photographic paper P is sent from the exposure unit by the feed roller 1 which is intermittently rotated by a stepping motor (not shown), the leading ends of the photographic paper P are detected by the detection sensors 5, 5, and the photographic paper P And the leading end enters between the rotating moving roller 8 and the moving pressure roller 10 to be pinched and pressed. When the leading end of the photographic printing paper P is pinched and pressed by the moving roller 8 and the moving pressure roller 10, the holding state by the stop of the return motor 18 is released, and the rotating platform is urged by the biasing force of the spring or the balance weight 16. Since the substrate A starts to rotate in the counterclockwise direction, the moving roller 8 and the moving pressing roller 10 are simultaneously separated from the X position while holding the leading end of the printing paper P, and start to rotate. The timing is determined by the number of pulses of a stepping motor that drives the feed roller 1 after detecting the leading end of the photographic paper P by the detection sensors 5 and 5 described above. The moving roller 8 and the moving pressure roller 10
The printing paper P, the leading end of which is pressed and held by this, is tensioned by the above-described rotation, but since the moving pressing roller 10 is provided with a one-way clutch, the printing paper P is pinched and held. It does not come off from the pressure contact, and at this time, the return motor 18 is free, and the pressing rod 20 protruding from the arm rod 19 of the return motor 18 is pressed to return the motor.
Reverse 18

When the rotating base substrate A is rotated away from the X position, the driven gear 7 is also disengaged from the first driving gear 4 and the rotation of the moving roller 8 is stopped. And photographic paper P sandwiched by moving pressure roller 10
The tip of is rotated while being held at the required angle, and when the rotating frame substrate A rotates by a required angle, the rotating frame substrate holding solenoid 21 is operated to cause the shaft 21 ′ to protrude. The rotating frame substrate A is stopped by bringing the shaft 21 'into contact with the rear surface of the upper receiving portion 17 of the rotating frame substrate A.
This stop position is defined as a Y position.

Due to the stop of the rotating base substrate A, the leading end of the printing paper P is stopped while being held between the moving roller 8 and the moving pressure contact roller 10, but since the printing paper P is sent from the exposure unit, The photographic paper P forms a hanging loop under its own weight.

Next, when the printing paper P is cut by the cutters 27, 27 at the end of printing, or when the longest printing paper P that can be developed by the above-described loop is stored, the rotating platform substrate holding solenoid 21 is operated. Move the shaft 21 '
Due to the counterclockwise biasing force, the rotating base substrate A starts rotating while holding the leading end of the printing paper P from the Y position.

The driven gear 7 is also moved with the rotation of the rotation gantry substrate A, and the pressing rod 20 protruding from the arm rod 19 of the return motor 18 is also moved to the upper receiving portion of the rotation gantry substrate A. It is in contact with 17 and rotates together.

The driven gear 7 meshes with and rotates with the second drive gear 23 on the developing machine side by the rotation of the rotation gantry substrate A from the Y position, and the rotation causes the driven roller 7 to be in pressure contact with the moving roller 8. The moving press roller 10 also rotates, and as a result,
The photographic paper P sandwiched between the moving roller 8 and the moving pressure roller 10 is fed out, and the carry-in roller on the developing machine side is used.
The printing paper P is sent to the inside of the developing machine. The position of the rotating base substrate A at this time is called a Z position.

As described above, the printing paper P is transferred to the carry-in roller 22 on the developing machine side.
When it is taken over by the pressure contact roller 24, the pressure contact / separation motor 13 is driven to rotate the substrate 14, and the rotation of the substrate 14 causes the support brace 12 to rotate in a direction away from the moving roller 8. As a result, the moving pressure roller 10 is separated from the moving roller 8 via the moving pressure roller supporting frame 11 fixed to the supporting bend 12.

When the returning motor 18 is driven in a state where the pressure contact between the moving roller 8 and the moving pressure roller 10 is released, the pressing rod 20 protruding from the arm rod 19 of the returning motor 18 starts rotating. Since the pressing rod 20 is in contact with the upper receiving portion 17 of the rotating frame substrate A, the rotation of the pressing rod 20 is opposed to the urging force of the rotating frame substrate A about the pivot shaft 15. The clock A is rotated clockwise, and the rotating base board A is rotated from the Z position toward the X position which is the first position, and waits until the next photographic paper P is sent to the X position. Becomes In this standby state, the motor 13 is driven in a direction opposite to that described above to bring the moving roller 8 and the moving pressure roller 10 into a pressed state, and the driven gear 7 is meshed with the first driving gear 4. I have.

As described above, in the present embodiment, first, the moving roller 8 and the moving pressure roller 10 wait at the X position.
When the leading end of the photographic paper P sent from the exposure unit is nipped by the moving roller 8 and the moving pressure roller 10 and the photographic paper P is further sent from the exposure unit, the moving roller 8 and the moving pressure roller 10 It moves to the Y position while holding the tip of P and stops. Thereafter, the printing paper P sent from the exposure unit is formed into a loop, and when the printing paper P is cut by the cutters 27, 27, the delivery roller 1 sends out the rear end of the printing paper P and stops at the Y position. The moving roller 8 and the moving pressure roller 10, which have been held, sandwich the photographic printing paper P and move toward the carry-in roller 22 on the developing device side, and the moving roller 8 and the moving pressure roller 10 move to the Z position. The leading edge of the photographic paper P is passed to the carry-in roller 22 on the side of
Reference numeral 10 denotes a releasing roller for the photographic paper P, a moving roller 8 and a moving pressure roller.
10 returns to the original X position and waits for the next photographic paper P to be sent.

As described above, since the photographic paper P after the exposure is carried in, the number of locations passing between the guides can be reduced, so that the occurrence of scratches on the photographic paper can be reduced.

Further, since the transport system is simplified, space is saved.

Further, since the photographic paper is transported by being nipped by the moving roller and the moving pressure roller, the photographic paper can be handled irrespective of the paper size, and the maximum width L (3rd
(See the figure).

〔The invention's effect〕

The photographic paper transporting device according to the present invention transports the photographic paper sent from the exposure unit while nipping and transporting the leading end of the photographic paper with the moving roller and the moving pressure contact roller. Since the number of places to pass between the guides was reduced, damage to the photographic paper was reduced, and it was possible to reduce the number of movable parts, so that noise generation was suppressed and the system was simplified. Therefore, it is useful for saving space, and as described above, it is possible to cope regardless of the size of the photographic paper, since only the front end of the photographic paper is clamped in the conveyance.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention, FIG. 1 is an explanatory view schematically showing the embodiment, FIG. 2 is a perspective view of the rotating base substrate, and FIG. 3 is an explanatory view of a moving roller. 1: Delivery roller 2, 3, 24, 25: Pressure contact roller 4: First drive gear, 5, 26: Sensor A: Rotating base board 6: Moving roller mounting arm, 7: Follower gear 8: Moving roller, 9: Axis 10: Moving pressure roller 11: Moving pressure roller support frame 12: Bending for support, 12 ': Base end 13: Motor, 14: Substrate 15: Rotating fulcrum shaft 16: Spring or balance weight 17: Receiving part 18: Motor for returning the rotating frame board A 19: Arm rod, 20: Pressing rod 21: Solenoid for holding the rotating frame board 22: Loading roller, 23: Second drive gear

Claims (1)

(57) [Claims] 1. A photographic paper sheet which conveys the leading end of photographic paper fed by a feed roller for intermittently sending photographic paper continuously and intermittently sent from an exposure unit to a carry-in roller of a developing machine. The transfer device comprises a rotating frame substrate, a rotating frame substrate returning member, and a rotating frame substrate temporary holding member, wherein the rotating frame substrate is disposed between a delivery roller and a loading roller. The rotation fulcrum shaft is urged by an urging member so that the feed roller and the carry-in roller are parallel to each other in the projection view, and the lower side rotates so as to approach the carry-in roller side. In a moving roller mounting arm which is protruded and protruded from the lower side in a direction opposite to the rotation fulcrum shaft, the shaft to which the moving roller is fixed and the driven gear is fixed at one end is rotatable. Support, and in the middle, At the same time, the pressing roller supporting frame rotatably supporting a moving pressing roller provided with a one-way clutch for holding the leading end portion of the photographic printing paper is pivoted through the supporting flexure of the frame to move the pressing roller. A driving member for pressing and separating the movable roller from the moving roller is provided, and a receiving rod portion is further protruded from an upper portion. In the driven gear, the lower side of the rotating base substrate is brought closer to the delivery roller side. At this time, the moving roller is rotated by meshing with the first driving gear fixed to the shaft of the delivery roller, and when approaching the loading roller side, meshing with the second driving gear fixed to the shaft of the loading roller. The driving member that rotates the moving roller and presses and separates the moving pressure contact roller from the moving roller is provided when the lower side of the rotating base substrate approaches the delivery roller side. When the roller is pressed against the moving roller, and when the roller approaches the carry-in roller, it operates so as to separate the leading end of the photographic paper after the carry-in roller is clamped. The lower portion of the rotating platform substrate is urged so as to come into contact with the receiving portion of the rotating platform substrate so that the lower side is close to the carry-in roller. The rotating platform substrate returning member is operated after the moving pressure contact roller is separated from the moving roller, and the lower side of the rotating platform substrate is moved to the delivery roller side. A sensor installed between the feed roller and the moving roller / moving pressure roller detects the leading edge of the photographic paper, and after a lapse of time until the moving roller and the moving pressure roller nip the leading edge of the photographic paper. Stop the operation, make the rotating gantry substrate in a free state, the rotating gantry substrate temporary stop member is activated when the rotating gantry substrate rotates a required angle from the sending roller side to the loading roller direction, When the printing paper is cut by the cutter at the end of printing, or when the printing paper capable of continuous development processing is stored after the rotation of the rotating frame substrate is stopped, the temporary stop of the rotating frame substrate is released. A photographic paper transport device in a printer, characterized in that: