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Multi-function monitoring module for printer

A technology of printers and printing media, applied in printing devices, printing, electrical components, etc., can solve troublesome and time-consuming problems

Inactive Publication Date: 2005-01-19
KONINKLIJKE PHILIPS ELECTRONICS NV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this built-in calibrator, it is no longer necessary to remove the printed image from the device and analyze the image offline for marks and their patterns, which is a cumbersome and time-consuming process

Method used

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  • Multi-function monitoring module for printer
  • Multi-function monitoring module for printer
  • Multi-function monitoring module for printer

Examples

Experimental program
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Embodiment Construction

[0070] figure 1 An embodiment of an inkjet printer 10 known from EP-A0641115 is shown. The printer has an internal frame comprising crossbars 11 extending in the Y direction. The inner frame defines a print medium passage 12 through which print medium can pass in the X direction. A sheet of print paper 13 is shown passing through the print media path suspended from paper guides 14 and 15 . Devices for moving paper through the print medium path are well known and described in figure 1 Not shown in . The inner frame is enclosed by a cover 17 .

[0071] Mounted on the inner frame is a bracket 19 which houses a writing device or inkjet cartridge 21 . Means for moving the carriage 19 in the Y direction are not shown. These devices are well known in the art. Generally, when the carriage completes one movement along the Y direction on the paper, the printing paper in the inkjet printer is displaced along the X direction. The displacement range of the printing paper depends on...

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PUM

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Abstract

In a module for monitoring the print quality of a dot printer (10), comprising a radiation source (41), a condensor lens system (43') for forming an illuminated area (45) on a printing medium (13) and an imaging lens system (87,89) for imaging the illuminated area on a detector (49'), the detector comprises at least a linear array of detector elements and the imaging system is configured in such a way that both the illuminated area and a small portion thereof can be imaged. This allows detection of both the gray scale of a print line (35) and the size and colour of an individual dot. A dot printer provided with this modules gives an improved print quality.

Description

technical field [0001] The present invention relates to the field of printers, in particular to a module for monitoring the print quality of a dot-matrix printer, the monitor of which is fixed on a carriage used to move the printing device of the printer, said module comprising: [0002] an illumination system for providing a monitor beam of radiation to illuminate an area of ​​a print medium, said print medium being in the form of printed paper; [0003] an imaging system for collecting the surveillance rays reflected from said illuminated area and forming an image on the image plane; and [0004] A radiation sensitive detection system for converting said image into an electrical signal representative of a print quality parameter. [0005] The present invention also relates to a dot matrix printer equipped with such a monitoring module, and a method of printing information using the dot matrix printer. [0006] A dot matrix printer is considered to be any kind of device for...

Claims

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Application Information

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IPC IPC(8): B41J29/46B41J2/21B41J29/393H04N1/00
CPCH04N1/00031H04N1/00082B41J29/393B41J2/2135H04N1/00015H04N1/00045H04N1/00002
Inventor T·K·A·M·布伦斯维克K·H·林登霍维乌斯W·A·G·蒂默斯
Owner KONINKLIJKE PHILIPS ELECTRONICS NV
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