Printing apparatus and printing method
A printing device and printing head technology, applied in the direction of printing device, printing, etc., can solve the problems of becoming smaller, unable to read properly, and poor density of printing medium, etc.
Pending Publication Date: 2021-12-31
SEIKO EPSON CORP
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- Description
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- Application Information
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Problems solved by technology
[0004] However, when the test pattern is printed on the printing medium by a nozzle capable of ejecting dots of multiple sizes from the nozzle, the portion of the test pattern that is printed by a relatively small dot among the multiple sizes is different from that of the printing medium. The concentration difference sometimes becomes smaller
As a result, some of the test pattern reading required for nozzle inspection and the inspection based on the read data may not be properly performed.
Method used
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[0016] Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that each figure is merely an example for explaining the present embodiment. Since each drawing is an example, ratios and shapes may not be correct, may not match each other, or may be partially omitted.
[0017] 1. Device composition:
[0018] figure 1 The configuration of the printing device 10 according to this embodiment is briefly shown.
[0019] The printing device 10 includes a control unit 11 , a display unit 13 , an operation receiving unit 14 , a communication IF 15 , a transport unit 16 , a carriage 17 , a print head 18 , a reading unit 19 , and the like. IF is short for interface. The control unit 11 is configured to include one or a plurality of ICs including a CPU 11a as a processor, a ROM 11b, a RAM 11c, and the like, other nonvolatile memories, and the like.
[0020] In the control unit 11, the processor, that is, the CPU 11a uses t...
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The invention relates to a printing apparatus and a printing method. Provided is a suitable test pattern for suitably performing reading and inspection after reading. The printing apparatus includes a print head and a control unit. The print head has a nozzle that ejects dots of a first size as dots of ink and dots of a second size smaller than the first size. The control unit controls the print head to print a test pattern on a print medium, the test pattern being used for checking a state in which the ink is ejected by the nozzle. The test pattern has a first pattern element formed by a plurality of points of the first size and a second pattern element formed by a plurality of points of the second size; the control unit enables the print head to print the test pattern; in the test pattern, the number of points forming the second size of the second pattern element is more than the number of points forming the first size of the first pattern element.
Description
technical field [0001] The invention relates to a printing device and a printing method. Background technique [0002] Disclosed is a technique as follows: an inkjet printing device, which records a test pattern on a printing paper through a recording head, reads the test pattern through a scanner, and performs interpolation processing on the read data, based on the interpolation-processed Abnormalities of nozzles are judged by reading data (see Patent Document 1). [0003] Patent Document 1: Japanese Patent Laid-Open No. 2007-54970 [0004] However, when the test pattern is printed on the printing medium by a nozzle capable of ejecting dots of multiple sizes from the nozzle, the portion of the test pattern that is printed by a relatively small dot among the multiple sizes is different from that of the printing medium. The concentration difference sometimes becomes smaller. As a result, part of the reading of the test pattern required for the inspection of the nozzles and...
Claims
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IPC IPC(8): B41J2/145B41J2/14B41J2/07B41J29/393
CPCB41J2/145B41J2/14B41J2/07B41J29/393B41J2029/3935B41J2/2142B41J2/2146B41J2/2052B41J2/2128B41J2/2117B41J29/38B41J2/04503B41J2/0456
Inventor 大原瑛一
Owner SEIKO EPSON CORP