摘要:
A method (100) and means for automatic alignment of ink-jet printheads includes fitting measuring constructs (401, 503, 505, 601) to actual print data acquired form a print made using a given, predetermined, test pattern data set. Specific test patterns (701, 801-805) for use in automated alignment of ink-jet printheads are suited to providing a variety of printhead alignment information in a compact format. The test pattern data set incorporates techniques for avoiding carriage-induced dynamic errors during automated alignment of ink-jet printheads.
摘要:
An apparatus and method of aligning different color print heads (20, 22) of an ink jet printer (10) by printing a sequence of extended-area first alignment elements (42) in a first color (44), then printing an overlaying sequence of extended-area second alignment elements in a second color (46.) Each of the alignment elements includes an array of spaced apart printed lines (44, 46). The first alignment elements are printed to nominal reference positions, and the second alignment elements are offset from the reference positions by differing amounts. The degree of overlap of the first and second color lines is readily visible, and the most thoroughly overlapped alignment element may be readily identified. The identity of this element may then be fed back to the printer to respond with electronic alignment measures.
摘要:
A printer (20) automatically selects the print mode depending upon media type. The printer has a media handler (30) to convey media through the printer and a media sensor (32) to detect whether the media is transparent. The printer also has a printing mechanism (34) configured to print a print file (44) using a print mode that is selected based upon the type of media (36) detected by the media sensor (32) and whether the print file (44) is intended for that media type.
摘要:
A printer medium feed mechanism clearance eliminator is provided, including a paper guide (32) mounted to the printer, a clearance eliminator sheet (38), and tensioning means (43). The clearance eliminator plate (38 conforms to the curve of a medium drive roller (20), thereby eliminating clearance wherein the medium (14) might buckle and cause jamming or skewing within the printer (10).
摘要:
An automatic sheet feed alignment system is described for feeding sheets (75) of print media such as paper to print mechanism in alignment with the print mechanism. A single motor drives a main sheet advance roller (60), and is also coupled to a sheet pick roller (55) through a non-reversing clutch. In idler roller (65) is disposed adjacent the drive roller (60). To feed a sheet (75) into the print position, the motor drives the main drive roller (60) and sheet pick roller (55) in a sheet advancing direction, until the sheet leading edge is advanced into and past the nip between the main drive (60) and idler rollers (65). The motor direction is then reversed so that the main roller (60) retracts the sheet (75). Because the sheet pick roller (55) is not driven in the reverse direction, a buckle (80) is formed in the sheet (75) between the sheet pick roller (55) and the nip, tending to align the leading sheet edge with the nip. The motor direction is then reversed to drive the sheet (75) forward to the print position, its leading edge having been aligned.
摘要:
The present invention is an ink container (12) for supplying ink having proper ink parameters to an ink supply station (40). The ink container (12) includes a latch feature (22, 22') indicative of an ink parameter of a plurality of ink parameters. The latch feature (22, 22') being configured for engaging a supply station (40) latch surface (46) for securely mounting ink containers (12) having proper ink parameters in supply stations (40).
摘要:
The present invention is an ink container (12) for supplying ink having proper ink parameters to an ink supply station (40). The ink container (12) includes a latch feature (22, 22') indicative of an ink parameter of a plurality of ink parameters. The latch feature (22, 22') being configured for engaging a supply station (40) latch surface (46) for securely mounting ink containers (12) having proper ink parameters in supply stations (40).