JP2600129B2 - Recording paper transport controller - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a recording paper transport control device in which a marking device such as a stamper having a recording speed lower than the copying speed can be connected to a subsequent stage of a copying machine.

[Conventional technology]

2. Description of the Related Art As a transfer-type thermal recording apparatus among stampers in a conventional copying machine, there is, for example, one shown in FIG. This transfer-type thermal recording apparatus includes an ink donor film (hereinafter abbreviated as IDF) 1 coated with a heat-meltable or heat-sublimable ink, and I
The supply roll 2 around which the DF1 is wound, the take-up roll 3 around which the used IDF1 is wound, and converting an electric signal into a heat signal
The thermal head 4 for heating the IDF1, the recording paper 5 to be recorded by the thermal melting or thermal sublimation of the ink of the IDF1, and the recording paper 5 are pressed against the thermal head 4 via the IDF1 at the time of transfer, and correspond to the image information. The thermal head 4 generates heat,
When the thermal head generates heat, the thermal transfer layer on the IDF 1 is transferred to the recording paper 5. The IDF 1 is sent out from the supply roll 2 and wound up by the take-up roll 3 after use, and the back roller rotates in the direction of the arrow in the figure to move the IDF 1 and the recording paper 5 to the right.

[Problems to be solved by the invention]

However, according to the conventional transfer-type thermal recording apparatus, when the copying machine is used for post-processing, for example, as a stamper, the recording speed of the thermal head is lower than the copying speed of the copying machine. Even if the collision of the recording paper between the printer and the transfer type thermal recording apparatus is solved by any means, there is a disadvantage that the recording speed of the entire apparatus is affected by the recording speed of the thermal head and becomes low.

[Means and actions for solving the problems]

The present invention has been made in view of the above, and in order to minimize the degree to which the recording speed of the entire apparatus is affected by the recording speed of the marking unit, a registration roll or the like in which the conveyance speed of the recording paper is increased after the marking unit The third transporting means is provided, the driving of the transporting means is stopped for a predetermined time, a loop of the recording paper is formed after the marking section, the speed of the transporting system is reduced only at the time of transfer, and the speed of the copying machine is set as soon as the transfer is completed. It is an object of the present invention to provide a recording paper transport control device which transports the recording paper at a higher speed.

〔Example〕

Hereinafter, the transfer type thermal recording apparatus according to the present invention will be described in detail. FIG. 1 shows one embodiment, and the same parts as those in FIG. 2 are indicated by the same reference numerals, and therefore, duplicate explanations are omitted.

After the unloading roll 8 which is the second unloading means for unloading the recording paper 5 which has been transferred by the thermal head 4 in the marking section, a third transport for transporting the recording paper 5 at a speed higher than the copying speed of the copying machine 11 Resist roll 9 as a means
And a sensor 10 for detecting that the leading end of the recording paper 5 has arrived at the registration roll 9.

In the above configuration, the transport speed of the recording paper 5 supplied from the copying machine 11 by the first transport roll 7 and the second transport roll 12 as the first transport means (this is the copying speed of the copying machine 11) And the speed at which the leading edge of the recording paper 5 arrives at the registration roll 9 when the recording paper 5 is not transferred by the thermal head 4) is set to x mm / sec.
When the transport speed at the time of transfer is y mm / sec and the transport speed after the registration roll 9 is z mm / sec, the transport speed of the recording paper 5 is controlled by the control unit so that the relationship y <x <z is satisfied. Controlled.

The recording paper 5 transported from the copier 11 at a speed of z mm / sec passes through the first and second transport rolls 7 and 12, the back roll 6, and the unloading roll 8, and the leading end thereof is transferred to the registration roll 9. Upon arrival, the sensor 10 detects this, and a control unit (not shown) turns off the clutch of the registration roll 9 to stop its rotation. When the rotation of the registration roll 9 is stopped, the loop l _{A of} the (t _A · x) mm recording paper 5 corresponding to the stop time t _A is determined based on the transport roll 7 and the registration roll 9.
Is formed.

On the other hand, when the transfer recording by the thermal head 4 is started, the transport speed of the transport roll 7 that supplies the recording paper 5 to the thermal head 4 and the transport speed of the output roll 8 that transports the recording paper 5 that has passed through the thermal head 4 are y mm /. Since the speed is reduced to sec, the recording paper 5 of t _D (xy) mm is transported between the transport roll 12 and the transport roll 7 disposed at the subsequent stage of the copying machine 11 in accordance with the transfer recording time t _D. loop l _B is formed.

Immediately before the transfer is completed, the clutch of the registration roll 9 is turned on, and the recording paper 5 is conveyed at a stretch of z mm / sec. Recording paper 5 to be conveyed while reducing the loop length of the loop l _B, it is possible to convey the recording paper 5 without affecting the over-tension, etc. to transfer the recording sheet 5. Further, it is possible to also avoid the collision between the recording sheet 5 in the transfer by the head 4 of the recording sheet 5 is discharged from the copying machine 11 to form a loop l _B in front of the thermal head 4.

In order to form a loop l _A necessary for the recording sheet 5 in the transfer by the thermal head 4 is not affected by the high-speed conveyance of the registration roller 9 must satisfy the following conditions. That is, if the registration roll 9 is stopped for t _A seconds after the arrival of the leading end of the recording paper 5, a loop of xx t _A mm of the recording paper 5 is formed. _The amount of loop required to start the transfer after _B seconds and finish the transfer after t _C seconds is (z−x) × t _B + (zy) × (t _C −t _B ). the value of _{a · x = (z-x} ) × t B + (z-y) × (t C -t B) satisfy t _a is a time required for loop formation.

The back roll 6, the transport roll 7, and the unload roll 8 each have a sprocket, and are driven by a transport motor (not shown) through a chain.
The sprocket of the back roll 6
The sprocket of the discharge roll 8 has a back roll 6, a transfer roll 7, and a discharge roll 8 of y mm / sec when the clutch is turned on. It has the number of teeth to be speeded. The registration roll 9 has a sprocket that receives a driving force of a registration unit motor (not shown), and switches between rotation and stop by turning on and off a clutch.

Although provided a loop l _B between the copier 11 and the thermal head 4 in the above embodiment is not limited thereto, for example, once a tray or the like recording paper 11 discharged from the copying machine 11 Then, the recording paper 5 can be prevented from colliding with the thermal head 4 by sequentially feeding the recording paper 5 to the thermal head 4. In addition, it is a matter of course that an ink jet method or the like can be applied to the marking part other than the thermal transfer type.

〔The invention's effect〕

As described above, according to the recording paper transport control device of the present invention, the third transport unit having a transport speed higher than the copying speed of the copying machine is provided after the marking unit, and the transport unit is stopped for a predetermined time to perform the marking. Make a paper loop after the copy. Only at the time of transfer at the marking section, the speed of the transport system is set to a low speed, and as soon as the transfer is completed, the loop-shaped recording paper is transported at a speed higher than the copying speed of the copying machine. The degree to which the speed is affected by the recording speed of the thermal head can be minimized.

[Brief description of the drawings]

FIG. 1 is an overall explanatory view showing one embodiment of the present invention. FIG. 2 is an explanatory view showing a conventional transfer type thermal recording apparatus. DESCRIPTION OF SYMBOLS 1... Ink donor film (IDF) 2... Supply roll 3... Take-up roll 4... Thermal head 5... Recording paper 6... Back roll 7 and 12. … Unloading roll, 9… Registration roll 10… Sensor, 11… Copier 1A, 1B …… Loop

Claims (1)

(57) [Claims] 1. A recording paper conveyance control device for controlling conveyance of recording paper to be recorded at a marking section after being discharged from a copying machine, wherein the recording paper is marked at a first speed x which is a discharging speed of the copying machine. And a roll for feeding the recording paper to the marking unit at a second speed y, which is a recording speed lower than the first speed, and a recording paper arranged at a subsequent stage of the marking unit from the first speed. A registration roll that conveys the recording paper at the third speed z, a detection unit that detects that the recording paper has reached the registration roll, and a control unit that controls the drive of each roll. After the detection, the registration roll is stopped for t _A seconds, and after the registration roll is stopped.
and initiating transcription of marking portion after t _B seconds, when to terminate the transfer to t _C seconds _{later, t A · x = (z} -x) t B + (z-y) × (t C -t B) When the time t _A satisfying the condition elapses, the resist roll is moved to the third position.
A recording paper conveyance control device, which rotates at a speed z.