| 发明名称 | Printing and printers | ||
| 摘要 | A method of printing a document using one of a plurality of print modes, the method comprising: (i) notionally dividing a digital image of the document into sectors;(ii) for each sector, comparing one or more properties of the luminosity of pixels within each sector with one or more threshold values;(iii) using the comparison of (ii) to determine whether each sector is likely to show an image defect if printed at a lower image quality print mode;(iv) selecting a print mode such that all sectors are determined not to be likely to show an image defect;(v) printing the document using the determined print mode. | ||
| 申请公布号 | US9247090(B2) | 申请公布日期 | 2016.01.26 |
| 申请号 | US200512090819 | 申请日期 | 2005.10.20 |
| 申请人 | Hewlett-Packard Development Company, L.P. | 发明人 | Martinez Angel;Campillo Alejandro;Serra Marc |
| 分类号 | H04N1/405;H04N1/00;H04N1/32 | 主分类号 | H04N1/405 |
| 代理机构 | HP Inc. Patent Department | 代理人 | HP Inc. Patent Department |
| 主权项 | 1. A method of printing a document using one of a plurality of print modes, the method comprising: notionally dividing a digital image of the document into sectors; for each sector, comparing one or more properties of the luminosity of pixels within each sector with one or more threshold values; using said comparison of to determine whether each sector is likely to show an image defect if printed at a lower image quality print mode; selecting a print mode such that all sectors are determined not to be likely to show an image defect; printing the document using the selected print mode; wherein the plurality of print modes cause different numbers of passes of a printer head of a printer over a print medium on which the document is printed during a print operation. | ||
| 地址 | Houston TX US | ||