JP2017132636A5

JP2017132636A5 - Printing system, media transport mechanism

Info

Publication number: JP2017132636A5
Application number: JP2017003963A
Authority: JP
Filing date: 2017-01-13
Publication date: 2019-11-21
Anticipated expiration: 2037-01-13

Description

本発明は、搬送される媒体などの用紙に印刷を行う例えばインクジェット式プリンターなどの印刷装置を有した印刷システムおよび該印刷システムに用いる媒体搬送機構に関する。 The present invention relates to a printing system having a printing apparatus such as an ink jet printer for printing on a paper such as a medium to be conveyed and a medium conveying mechanism used in the printing system .

上記印刷システムは、前記媒体の搬送を制御する搬送制御部をさらに有し、上記印刷システムにおける前記印刷装置は、前記媒体を載置するカセットと前記カセットから前記媒体を給送する給送部を有し、前記搬送制御部は、前記印刷部が前記媒体の単位領域当たりに付着させる液体の量である単位付着量が予め設定された閾値よりも少ない場合には、前記先行する媒体と前記後続する媒体との間隔として第１間隔となるよう前記給送部を制御し、前記単位付着量が前記閾値よりも多い場合には、前記先行する媒体と前記後続する媒体との間隔として前記第１間隔よりも広い第２間隔となるよう前記給送部を制御し、前記反転後経路における前記媒体の搬送速度として、前記先行する媒体と前記後続する媒体との間隔が前記第１間隔である場合には前記第２搬送速度となるよう該搬送速度を制御し、前記先行する媒体と前記後続する媒体との間隔が前記第２間隔である場合には前記第２搬送速度よりも低速な第４搬送速度となるよう該搬送速度を制御することが好ましい。
The printing system further includes a conveyance control unit that controls conveyance of the medium, and the printing apparatus in the printing system includes a cassette on which the medium is placed and a feeding unit that feeds the medium from the cassette. And the conveyance control unit includes the preceding medium and the succeeding medium when the unit deposition amount, which is the amount of liquid deposited by the printing unit per unit area of the medium, is smaller than a preset threshold value. The feeding unit is controlled so as to be the first interval as the interval with the medium to be performed, and when the unit adhesion amount is larger than the threshold value, the first interval is set as the interval between the preceding medium and the subsequent medium. controlling the feeding portion so as to be wider second interval than the interval, as the conveying speed of the medium in the after-reverse path, a distance between the preceding medium and the subsequent medium is the first gap field In this case, the transport speed is controlled so as to be the second transport speed, and when the distance between the preceding medium and the succeeding medium is the second distance, the fourth transport speed is lower than the second transport speed. It is preferable to control the conveyance speed so as to achieve the conveyance speed.

Claims

A printing device having a printing unit that attaches a liquid to a medium for printing, and an upstream conveyance path through which the medium printed by the printing unit is conveyed;
An intermediate transport path through which the medium is transported from the upstream transport path, the intermediate transport path having a switchback path for switching back the medium, and an inversion path for reversing the medium transported from the switchback path; An intermediate device including a post-inversion path for transporting the medium inverted by the inversion path;
A downstream transport path through which the medium is transported from the intermediate transport path, a post-processing unit that performs post-processing on the medium transported from the downstream transport path, and a medium post-processed by the post-processing unit are discharged. And a post-processing device having a discharge portion to perform,
The second transport speed that is the transport speed of the medium in the reverse path is slower than the first transport speed that is the transport speed of the medium in the upstream transport path,
The distance between the trailing edge of the preceding medium and the leading edge of the medium that follows the preceding medium is greater than when the preceding medium is conveyed at the first conveying speed. Printing system that is shorter when transporting at speed.

The printing system according to claim 1, further comprising a conveyance control unit that controls conveyance of the medium.

The printing apparatus includes a cassette on which the medium is placed and a feeding unit that feeds the medium from the cassette.
The conveyance control unit
When the unit deposition amount, which is the amount of liquid deposited per unit area of the medium by the printing unit, is smaller than a preset threshold, the first interval is set as the interval between the preceding medium and the subsequent medium. If the unit adhesion amount is larger than the threshold value, the second interval is larger than the first interval as the interval between the preceding medium and the subsequent medium. Control the feeding section so that
As the transport speed of the medium in the reverse path, the transport speed is controlled to be the second transport speed when the distance between the preceding medium and the succeeding medium is the first distance, 3. The transport speed is controlled according to claim 2, wherein when the interval between the preceding medium and the subsequent medium is the second interval, the transport speed is controlled to be a fourth transport speed that is lower than the second transport speed. Printing system.

The conveyance control unit
4. The printing system according to claim 3, wherein the conveyance speed of the medium is controlled so that the third conveyance speed is higher than the second conveyance speed in the downstream conveyance path.

The transport control unit may set the interval between the preceding medium and the succeeding medium to be narrower after switching back each of the media than the interval before switching back each of the media. 5. The printing according to claim 4, wherein the conveyance is controlled so that an interval when the preceding medium is conveyed at the third conveyance speed is wider than an interval after the switchback. system.

The intermediate transport path has a plurality of pairs of the switchback path and the reverse path,
The plurality of inversion paths merge with the post-inversion path,
6. The printing system according to claim 3, wherein a conveyance speed of the medium in the reverse path is the second conveyance speed or the fourth conveyance speed.

In the upstream transport path, the upstream end of the preceding medium and the downstream end of the subsequent medium are transported in a separated state,
In the reverse path, the upstream end of the preceding medium and the downstream end of the subsequent medium are transported in an overlapped state.
The printing system according to claim 6, wherein the upstream end and the downstream end are separated again after the preceding medium reaches the third transport speed in the downstream transport path.

  An introduction path configured to convey a medium recorded by a printing unit that discharges droplets;
  A first switchback path configured to switch back the medium conveyed from the introduction path;
  A second switchback path configured to switch back the media transferred from the introduction path;
  A first branch path configured to transport media from the introduction path to the first switchback path;
  A second branch path configured to convey the medium from the introduction path to the second switchback path;
  A second reversing path configured to reverse and transport the medium switched back from the first switchback path;
  A second reversing path configured to reverse and transport the medium switched back from the second switchback path;
  An upstream end connected to a confluence where the downstream ends of the first inversion path and the second inversion path meet each other, and a lead-out path configured to convey the medium to the post-processing unit,
  The second conveyance speed, which is the medium conveyance speed in the lead-out path, is slower than the first conveyance speed, which is the medium conveyance speed in the introduction path,
  The second distance between the trailing edge of the preceding medium and the trailing edge of the succeeding medium in the lead-out path is shorter than the first distance between the trailing edge of the leading medium and the trailing edge of the succeeding medium in the introduction path. A medium transport mechanism characterized by the above.

  An introduction path configured to convey a medium recorded by a printing unit that discharges droplets;
  A switchback path configured to switch back the medium conveyed from the introduction path;
  A guide path configured to convey media from the introduction path to the switchback path;
  An inversion path configured to invert and convey the medium switched back from the switchback path;
  An upstream end connected to the downstream end of the reversing path, and a lead-out path configured to transport the medium to the post-processing unit, and
  The second conveyance speed, which is the medium conveyance speed in the lead-out path, is slower than the first conveyance speed, which is the medium conveyance speed in the introduction path,
  The second distance between the trailing edge of the preceding medium and the trailing edge of the succeeding medium in the lead-out path is shorter than the first distance between the trailing edge of the leading medium and the trailing edge of the succeeding medium in the introduction path. A medium transport mechanism characterized by the above.