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Method and system for aligning ejectors that eject clear materials in a printer

A technology of transparent materials and ejectors, applied in transfer materials, printing devices, printing, etc., can solve problems such as difficult detection

Active Publication Date: 2018-08-07
XEROX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of light causes the edges of the short lines of transparent material in the test pattern to look like a background, so detecting short lines in an image of the test pattern is difficult

Method used

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  • Method and system for aligning ejectors that eject clear materials in a printer
  • Method and system for aligning ejectors that eject clear materials in a printer
  • Method and system for aligning ejectors that eject clear materials in a printer

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Experimental program
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Embodiment Construction

[0017] For a general understanding of the context of the methods and printers disclosed herein, as well as details of the methods and printers, reference is made to the accompanying drawings. In the drawings, the same reference numerals denote the same elements.

[0018] figure 1 A three-dimensional (3D) object printer 100 is shown. Printer 100 includes a platen 104 and a plurality of injector heads 108 . The injector heads 108 are configured with one or more actuators to enable each injector head to move independently in the process direction, the cross-process direction, and the vertical direction, as explained further below, so that each injector head's spray The injector is registered with the injectors of other injector heads. Thereafter, the injector heads 108 move together as a mass to maintain registration of the injectors in the injector head. Each injector head 108 has one or more injectors configured to inject droplets of build material toward surface 112 of pla...

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PUM

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Abstract

A printer is configured with an optical sensor that enables dashes in a test pattern formed with clear drops on a mirror-like surface to be detected and their positions identified. The optical sensorincludes a louver positioned adjacent to a light source to limit and collimate an amount of light emitted by the light source onto each portion of the test pattern. The limiting of the light facilitates the processing of the image data generated by a plurality of photodevices that receive the specular light reflections from the mirror-like substrate and the test pattern to identify the positions of the dashes. These identified positions are compared to expected positions to identify misalignment distances that can be used to adjust ejector head alignment and timing of the firing signals to theejector head that ejects clear drops.

Description

technical field [0001] The systems and methods disclosed in this document relate generally to printing systems, and more particularly, to systems and methods for aligning jets to enable drop registration and defective jet detection in printing systems. Background technique [0002] Two-dimensional (2D) and three-dimensional (3D) printers operate one or more ejectors to eject drops of material onto an image receiving member or platen. Materials can be water-based, oil-based, solvent-based, UV-curable, emulsion, phase-change, or other materials, especially in three-dimensional (3D) object printers. [0003] A typical printer uses one or more ejectors that may be integrated into one or more printheads. The injector ejects drops of material through the open gap onto the image receiving member or platen. In a 2D printer, the image receiving member may be a continuous web of recording media, a series of sheets of media, or the image receiving member may be a rotating surface suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/209B29C64/393B33Y30/00B33Y50/02B41J2/125B41J11/00
CPCB33Y30/00B33Y50/02B41J2/125B41J11/0095B41J2/2114B41J25/001B41J2/04505B41J2/04586
Inventor M·E·胡佛M·P·瓦格纳K·H·冯
Owner XEROX CORP
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