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Recording device and control method

A recording device and recording head technology, applied in printing devices, printing and other directions, can solve the problems of not considering the position deviation of ink droplets, unable to detect the position of ink droplets, etc., and achieve the effect of good accuracy

Inactive Publication Date: 2012-08-15
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the invention of Patent Document 1 does not consider the ink droplet position deviation in the sub-scanning direction.
Moreover, the invention cannot detect the ink droplet position in the sub-scanning direction

Method used

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  • Recording device and control method
  • Recording device and control method
  • Recording device and control method

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Experimental program
Comparison scheme
Effect test

no. 1 approach 》

[0040]

[0041] First, refer to figure 1 The overall structure of the recording device of this embodiment will be described. figure 1 It is a schematic diagram of the overall structure of the recording apparatus of this embodiment.

[0042] In the recording device of this embodiment, the guide rod 1 and the sub guide 2 are erected between the left side plate 3 and the right side plate, and the carriage 5 is held in the guide by the bearing and the sub guide receiving portion 11 not shown. The rod 1 and the auxiliary guide 2 enable the carriage 5 to slide in the main scanning direction. The carriage 5 is equipped with recording heads 21, 22 that eject black (K) ink droplets, and recording heads 23, 24, 25 that eject yellow (Y), red (M), and cyan (C) ink droplets.

[0043] The main scanning mechanism for moving the carriage 5 in the main scanning direction includes a main scanning motor 8 located at one end of the main scanning direction, a driving pulley 7 driven to rotate by the ma...

no. 2 approach

[0109] In the recording device of the first embodiment, the pair of the light emitting element array 300X and the light receiving element array 301X in the X axis direction and the light emitting element array 300H and the light receiving element array 301Y in the Y axis direction are in the vertical direction (z axis direction). Are arranged at arbitrary intervals. To this end, the light-emitting element arrays 300 on both sides are in the light-emitting state, such as Figure 14 As shown, the recording heads 21-25 eject an ink drop 303 (S2), and the position information of the ink drop 303 on the X axis and the Y axis (S3 and S4).

[0110] In contrast, in the second embodiment, the paired X-axis direction light-emitting element array 300X and light-receiving element array 301X and Y-axis direction light-emitting element array 300H and light-receiving element array 301Y are in the vertical direction (z-axis direction). Set in the same position. At this time, interference will oc...

no. 3 approach

[0116] In the above embodiment, the position signal of the ink droplet 303 on the X axis corresponding to the output signal obtained from the light receiving element array 301X in the main scanning direction and the ink droplet 303 corresponding to the output signal obtained from the light receiving element array 301Y in the sub-scanning direction The position signal on the Y axis compensates for the positional deviation of the ink droplets 303 actually ejected by the recording heads 21-25.

[0117] In contrast, in the third embodiment, after the ink droplets 303 are ejected from the recording heads 21 to 25, the output of the light receiving element array 301X in the main scanning direction and the light receiving element array 301Y in the sub scanning direction are obtained. According to the acquired time information, the positional deviation of the ink droplet 303 actually ejected by the recording heads 21-25 is compensated to improve the accuracy of the positional deviation of...

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Abstract

The invention relates to a recording device and a control method of the same. The recording device allows the position of an ink droplet ejected by a recording head to be detected with a fine precision. According to the recording device, an ink droplet (303) is ejected by recording heads (21)~(25), the position information along an auxilary scanning direction and the position information along a main scanning direction of the ink droplet (303) are detected, the position information along the auxilary scanning direction corresponds to a first output signal obtained by a first light receiving element array (301Y) when the ink droplet (303) passes through a part of an optical axis (304Y) in a first luminous element array (300Y), and the position information along the main scanning direction corresponds to a second output signal obtained by a second light receiving element array (301X) when the ink droplet (303) passes through a part of an optical axis (304X) in a second luminous element array (300X).

Description

Technical field [0001] The present invention relates to recording devices such as inkjet printers. Background technique [0002] In an inkjet recording device, when a carriage equipped with a recording head is moved back and forth in the main scanning direction, the recording head ejects ink droplets to record an image (dot) on a recording medium. When forming an image, a conveying roller or the like conveys the recording medium in the sub-scanning direction, and at the same time, repeats recording in the main scanning direction to form an image on the recording medium. [0003] If the recording head is not properly mounted on the carriage, when a recording head installation error occurs, the ink droplets ejected from the recording head will deviate from the normal position. [0004] In response to the above-mentioned problems, Patent Document 1 (JP Patent No. 4186548) discloses a recording device that includes a speed detection device and a drive control device. The speed detection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01B41J29/393
Inventor 铃木新
Owner RICOH KK