Printer and printing method
A technology of printers and conveying mechanisms, applied in printing devices, printing, etc., can solve problems such as increased influence of inertia, decreased precision, and difficulty in conveying media correctly
Active Publication Date: 2015-10-21
SEIKO EPSON CORP
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Problems solved by technology
[0006] In the method of Patent Document 1, the inertia (inertia) accompanying the axis misalignment of the rotation axis of the roll paper caused by the installation error of the roll paper and / or the mechanical manufacturing error and / or the deterioration over time impact without any consideration
For example, when printing on roll paper with a large roll diameter, such as a large printer for business use, the influence of inertia due to shaft misalignment increases as the diameter increases.
Furthermore, if the influence of inertia caused by shaft misalignment increases when controlling the drive motor and / or transport rollers of the roll paper, the responsiveness of the motor during acceleration and deceleration will deteriorate, and the accuracy of control will be reduced. decline
In particular, the conveyance roller needs to repeatedly control the conveyance and / or stop of the medium during printing, so if the inertia affects the operation of the conveyance roller, it becomes difficult to convey the medium correctly
Method used
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no. 2 Embodiment approach ＝
[0129] ===Second Embodiment===
[0130] In the second embodiment, the control based on the slack amount of the medium is also performed between the conveyance adjustment roller 61 a and the conveyance roller 51 a. Figure 11 It is a figure which schematically shows the state of rotation of various rollers and / or slack of a medium at the time of medium conveyance in 2nd Embodiment. Figure 12 It is a block diagram showing an example of the functional configuration of the control unit 100 in the second embodiment.
[0131] In the second embodiment, in order to detect the amount of slack in the medium between the conveyance adjustment roller 61a and the conveyance roller 51a, a slack sensor 58 ( Figure 11 ). Like the slack sensor 68, the slack sensor 58 is provided on the lower side of the medium, and is capable of detecting the vertical position of the medium (the relative position of the slack sensor 58 and the vertical direction of the medium) between the conveyance adjustm...
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A printer includes a roll driving mechanism for causing a roll to rotate and a medium to be conveyed, a roll driving section for driving the roll driving mechanism, a first conveying mechanism for conveying the medium, a first driving section for driving the first conveying mechanism, a second conveying mechanism for conveying the medium, and a second driving section for driving the second conveying mechanism, and a controller for performing a control in such a way that when there is a change in the rate at which the first conveying mechanism conveys the medium, the maximum amount of the difference between the amount of the medium conveyed by the roll driving mechanism and the amount of the medium conveyed by the second conveying mechanism exceeds the maximum amount of the difference.
Description
technical field [0001] The present invention relates to a printer and a printing method. Background technique [0002] There is a printer that prints by ejecting ink from nozzles to land ink droplets (dots) on a medium. In addition, as a printer, a printer having a roll paper printing mechanism that appropriately pulls out an amount of the medium (roll paper) wound into a roll to perform printing is known. In such a printer, printing is performed while adjusting the conveyance amount of the medium by controlling the rotation amount of the roll paper and / or the rotation amount of a conveyance roller that conveys the medium (paper) drawn from the roll paper. [0003] In a printer equipped with a roll paper printing mechanism, when the rotation amount of the roll paper and / or the transport roller is controlled, a certain tension is applied to the medium so that the medium is transported without slack. However, the roll diameter of the roll paper changes as the medium is consu...
Claims
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IPC IPC(8): B41J15/00
CPCB41J15/04B41J11/42
Inventor 五十岚人志
Owner SEIKO EPSON CORP