Ink+Consumption+Accuracy

=How accurate is the ink consumption data in the Print Log?=


 * Answer:** Probably not very accurate. There are a number of reports of inconsistencies. Here is one from Chromix on 11/2/07:

"The information about ink consumption in the printers job protocol list seems to be not very accurate. Here is an excerpt from my printers protocol:

. . . Job 3 Doc Name: Kalender01_05.tif User Name: Administrator Page Count: 22 Job Status: Comp Print Start Time: 30/10/2007 11:40 Print End Time: 30/10/2007 13:34 Print Time: 6842 Print Size: 297 mm x 420 mm 124740 sq Media Type: Premium MatteP I/F: USB Ink : 14.8 ml

Job 4 Doc Name: Kalender01_05.tif User Name: Administrator Page Count: 1 Job Status: Comp Print Start Time: 30/10/2007 11:19 Print End Time: 30/10/2007 11:24 Print Time: 322 Print Size: 297 mm x 420 mm 124740 sq Media Type: Premium MatteP I/F: USB Ink : 0.1 ml

Job 5 Doc Name: Kalender01_05.tif User Name: Administrator Page Count: 1 Job Status: Comp Print Start Time: 30/10/2007 11:08 Print End Time: 30/10/2007 11:13 Print Time: 321 Print Size: 297 mm x 420 mm 124740 sq Media Type: Premium MatteP I/F: USB Ink : 0.1 ml

Job 6 Doc Name: Kalender01_05.tif User Name: Administrator Page Count: 1 Job Status: Comp Print Start Time: 30/10/2007 11:01 Print End Time: 30/10/2007 11:06 Print Time: 327 Print Size: 297 mm x 420 mm 124740 sq Media Type: Premium MatteP I/F: USB Ink : 0.1 ml. ..

Job 4, 5 and 6 were 2 test prints. Job 3 was the final print of 22 copies of the same file. Job 4,5 and 6 show an ink consumption of 0.1 ml. But in Job 3 14.8 ml were used for 22 prints. Now, 14.8 divided by 22 makes 0.67 - quite a difference compared to 0.1!! Job 3 and 4 were absolutely the same. In Job 5 and 6, I only shifted the print a little (between 1 and 2 mm) to get the borders right, other than that everything was the same like in Job 3 and 4.


 * Conclusion:** "I think this is important information for those who use the protocol to calculate the cost of printing. This might also cause some mistakes when calculating the amount of ink used for cleaning cycles. Maybe the ink was in fact used for printing and not for cleaning and only the numbers in the job protocol were incorrect."