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Gespeicherte Werte zur Farbdeckung löschen - Wie?

HP Color Laserjet 4600NAlt

Frage zum HP Color Laserjet 4600N

Drucker (Laser/LED) mit Drucker ohne Scanner, Farbe, 16,0 ipm, PCL/PS, Ethernet (ohne Airprint), nur Simplexdruck, 2 Zuführungen (600 Blatt), kompatibel mit C9720A, C9721A, C9722A, C9723A, Q3675A(mehr Daten)
3 Frei-Monate mit "RPMAX3"

Abo für Drucker & Tinte bereits ab 6,99€ monatlich

Inklusive einem "EPSON EcoTank". Ohne Aktivierungsgebühr.

Monatliche Abo-Gebühr inklusive Tinte für je 50 Seiten mit einem Epson Ecotank ET-2870U. Andere Druckermodelle oder mehr Seiten gegen Aufpreis. Mindestlaufzeit 24 Monate.

Code für 3 Frei-Monate für Tarife bis zu und inklusive 150 Seiten. Einlösbar bis 30.09.2025.

Dieses Thema ist inaktiv: weitere Antworten sind nicht mehr möglich. Sie können jedoch ein neues Thema erstellen.

Antwortenletzte Antwort #1Neues Thema
von
Hallo,
wir haben mehrere HP4600 und 4650 im Einsatz. Dabei ist ein Drucker, der extrem hohen Werte zur bisherigen Farbdeckung anzeigt. Das kommt daher, dass er zeitweise für spezielle Drucksachen (Lithofolien) verwendet wurde.

Störend ist jetzt, dass der Drucker bei der Berechnung der voraussichtlichen Restdauer des Toners auf diese alten Werte zurückgreift und schon kurz nach dem Einlegen eines neuen Tonersatzes diesen als fast leer meldet. Lt. HP wird der Füllstand des Toners nicht gemessen, sondern anhand der bisherigen Farbdeckung interpoliert.

Nachdem mit diesem Drucker auch noch verhältnismäßig wenig gedruckt wird, dauert es wahrscheinlich Jahre, bis sich die Werte der Farbdeckung "normalisiert" haben.

Gibt es eine Möglichkeit, die durchschnittliche Farbdeckung zu löschen und ab dann neu berechnen zu lassen? Das Rücksetzen auf die Werkseinstellung hilft hierbei leider nicht.

Und noch eine Frage dazu: Wo kann man ein Servicemanual für den 4600/4650 bzw. 4700 bekommen?

Grüße!
Chris
von
hi,

das der drucker auf die von dir beschrieben werte zurückgreifen soll ist so nicht ganz richtig. das ist noch viel komplexer, letztendlich aber kannst du mit jeder tonerkassette bei 5% deckung rund +/- 8.000 seiten drucken.

und so funktioniert nun das ganze :-)

The Toner Level Sensing allows users to monitor toner life remaining as follow:
• The % of life remaining for all consumables (in text format) are reported on the Supplies Status Page printed via the printer control panel.
• Users can graphically review the % of life remaining for consumables utilizing the Embedded Web Server and printers control panel display.
• Customers are able to use the % of life remaining to determine when to order new supplies.

Note: percent of life remaining information is not accurate enough to provide meaningful job by job usage information.

How does it work?

The printer monitors print cartridge life in several ways to ensure continued high print quality:
• The toner sensor monitors remaining toner levels.
• The number of developer rotations measures the usefulness (charge) of the toner.
• The number of photosensitive drum rotations measures the life of the photosensitive drum, which degrades slightly with each rotation.
• Toner unit counting is used to measure toner coverage on each page for each color plane, CMYK.

The cartridge percent life shown on the supplies status page and in the gauges on the printers control panel is a combination of all these variables. The lowest remaining percent among these four variables is the percent reported. Their can be situations where the reporting accuracy of these systems can cause the Estimated Pages Remaining counts to go up and down. The percentage reported on the control panel gauges or Supplies Status Page will never go up. It should be noted that information about which of these variables is low or out is not specifically reported.

What are the components?

During the life of a print cartridge, the customer receives three different control panel messages:
• OK – The cartridge has greater than 15 percent life remaining.
• LOW / Order cartridge – This message will be posted when the cartridge has 15% to 1% life remaining. Toner unit counts do not trigger this message. In typical printing situations, this represents about 2 weeks of use, but is dependent on toner coverage.
• OUT / Replace cartridge – One of the three variables has reached 1% of life. Toner unit counts do not trigger this message. The printer stops, and printing cannot continue until the cartridge is replaced.

Toner sensor
For the first 75 percent of the cartridge life, toner depletion is calculated by toner unit counting. An optical toner level sensor then tracks the final 25% of toner in 1% increments. The toner is measured and then reported via the toner gas gauge on the control panel and the supplies status page.

Toner unit counting
Historically called pixel counting, toner unit counting is a more accurate method for determining toner coverage on the page. With advances in laser modulation, adaptive halftoning, and edge sharpening technologies used in current printers, the entire pixel area may not be completely covered with toner. This leads to significant over estimations of toner coverage with a strict pixel counting strategy. Toner unit counting has improved the process of calculating page coverage but even with these improved techniques, toner coverage estimating is still not an exact process and has a possible inaccuracy of up to 10 percent. Toner unit counting is used to increment the toner gauges on both the printers control panel and the supplies status page. Toner unit counting is the main process for incrementing the toner gauges until the toner level sensor or the drum rotations registers a lower value at which point that value would take precedence.

Developer rotations
The developer roller rotations are tracked on the print cartridge e-label, but only reported if they are the lowest reporting component. Tracking rotations enables the printer to signal a print cartridge is low or out before the developer and/or toner is worn out. Exceeding the developer rotation life would result in print quality defects. Over time, the toner loses its required properties due to excessive stirring and re-charging. Although the cartridge will correctly signal LOW or OUT because of wear, some toner might remain in the fresh toner hopper. In addition to toner wear, the developer roller experiences wear during its life, so developer life tracking is necessary. In situations where low-coverage documents are printed frequently, the developer rotations might trigger a LOW message before the toner level reaches its low threshold.

Photosensitive drum rotations
Photosensitive drum rotations are also tracked on the cartridge’s e-label. Similar to the developer roller tracking, these rotations enables the printer to signal that a print cartridge is low or out before the photosensitive drum is actually worn out, when print quality defects would occur. A print cartridge has significantly more photosensitive drum rotations than developer rotations so the developer rotations would most likely be the determining count in a low print coverage workflow. But as noted earlier the customer has no indication as to which variable (toner or drum rotations) is low or out. The customer only sees the indication that the print cartridge is LOW or OUT.

How are the readings reported to the user?

Supplies Status Page reporting: Percentages and page counts reported on the SSP is intended to give users a real-time view of where consumables are in their life cycle. Because these calculations are based on averages they may not reflect accurate short-term consumable usage information.

Print Cartridges: Black, Cyan, Magenta & Yellow
Print Cartridge Percentage & Gas Gauge – The method used for reporting Toner % Remaining and Estimated Pages Remaining changes throughout the life of the print cartridge.

At toner levels 100% – 90%, the printer assumes 5% coverage. The values reported on the Supplies Status Page and control panel will reflect 5% coverage, regardless of actual usage. This is done to avoid giving misleading values when only a few pages have been printed, which may not be representative of overall usage for the printer.

At toner levels 90% - 25%, the printer uses an internal toner unit counting algorithm. The values reported on the Supplies Status Page and control panel will reflect actual usage of toner based on this algorithm. Depending on actual toner usage, customers may see an anomaly occur during the switch to pixel counting. If the actual toner usage during the 100%-90% life period is less than 5%, the customer will see the value remain at 90% for an extended period of time, until the pixel counting algorithm calculated the level at less 90%. If the actual toner usage during this period is more than 5%, the customer may see the value drop quickly to a value much lower than 90%. The Estimated Pages Remaining will adjust to model actual toner usage.

At toner levels 25% - 0%, the toner level detection sensor uses the light receiver and light emitter on the print cartridge to determine the amount of toner remaining. The transition from pixel counting to light detection is generally seamless to the customer.

Note: If the pixel counting algorithm is incorrect, the print cartridge will not give a false cartridge low or out message. However, it is important to remember that a “replace cartridge” message does not necessary indicate toner out. In a low coverage print model the cartridge may have toner remaining, but either the developer or photosensitive drum rotations have been consumed, resulting in a “replace cartridge” message. Please see white paper on Color vs. Black Only for more information on this topic.

Estimated Pages Remaining - The (EPR) information is calculated based on the page coverage and the percent life remaining as recorded on the e-label. For this reason the EPR value for the first 10% of cartridge life uses a simple subtraction algorithm. During the first 10% (100% - 90%) the EPR value is calculated by subtracting the number of pages printed from the Max Cartridge Life. From 90% of life down to 0% the EPR value is calculated based on the toner unit page coverage. Estimated Pages Remaining = Life Remaining * (Total Pages Printed / Life Used). It should be remembered that this is a calculated value based on average historical usage, it is not an exact figure and will go up and down. Toner level sensing or drum rotation counts are not used in calculating EPR. Toner unit calculations are used exclusively from 100% to cartridge replacement to report EPR.

Historical page coverage percentage – Page Coverage information is calculated on a cartridge-historical basis. Each time a SSP is requested (EWS or the printed version) a calculation is performed to determine the average toner unit page coverage for each toner cartridge. This calculation utilizes a simple ratio of percent life used to the total pages printed from a given cartridge. The expected cartridge life (sometimes called “yield”) is rated based on the number of 5% coverage pages that can be printed. During the first 10% of the cartridge life (100% - 90%) the Supply Status Page will report 5% page coverage. This initial number of pages is required in order to ensure that statistically significant page coverage is accumulated before beginning to report this value.

From 90% of cartridge life down to 0% the following equation is used to calculate Page Coverage. Coverage (%) = (Max Life / Total Page printed) * Life Used. Since Max life is based on the 5% coverage page yield – Coverage (%) = ((Max Life * 5) / (100 * Total Page Printed)) * Life Used.

Low Reached – YES/NO triggered by the lowest of the three variables toner level sensor, developer rotations, or photosensitive drum rotations.

Serial number – reported from the cartridge e-label

Pages printed with this supply – The Total Pages Printed information is read directly from the cartridge E-Label. The print engine detects, updates and stores this information on the e-Label in terms of A4/Letter equivalent page counts. The Supplies Management firmware reads the Total Pages Printed value directly from the e-Label after each print job completes (this process takes a few seconds, if a SSP is printed immediately following a print job, the count may be incorrect). Mathematical differences can occur when printing media sizes that are not A4 or Letter size. A Legal size page will result in incrementing this count by 1.3 units whereas a Monarch envelope will only add 0.3 units to this count. The total page count reported by this E-Label field is always reported as an integer (i.e. No fractional pages are reported).

Control Panel Toner Gauges – the toner gauges displayed on the printers control panel, use the same algorithms and counts as those displayed on the Supplies Status page.

Usage Page / Coverage - The Coverage information recorded on the Usage Page is calculated on a printer-historical basis. After each page prints, a toner unit count for each color plane is accumulated in the printer’s non-volatile memory (NVRAM). This historical pixel counting data consists of two variables - The total number of toner units used on the printed page (A) and the maximum number of toner units possible for the given page size (B). The coverage data on the usage page is calculated using these two variables. Usage Page Coverage (%) = (A / B) * 100

NOTE: The Usage Page coverage numbers utilize a weighted average over the life of the printer. It may be necessary to print many pages with a significantly lower or higher coverage in order to observe a change in these values.

Page Counts – Page counting is tracked in two ways;
• Media count – this page count is not related to page size, one unit for every sheet of media passing through the printer is recorded. This count is shown on the Configuration Page and used in the Image Fuser Kit and Image Transfer kit counts displayed on the Supplies Usage Page. The Media page counts are incremented when a page is picked from the Paper Tray.

• A4/Letter equivalents count– records whole and fractional units based on media size. A legal size page will result in incrementing this count by 1.3 units whereas a monarch envelope will only add 0.3 units to this count. The page count reported on the e-label field is always reported as an integer (i.e. no fractional pages are reported). A4/Letter equivalents count is shown on the Usage Page and the Supplies Status Page. The page counts for A4/Letter Equivalents are incremented when the toner is laid down on the media or transfer belt. Page counts recorded on the print cartridge e-label are updated after every print job. There is a twenty second time delay required for the recording process.

Known Issues?

--Page counting issues - The page counts reported on the Configuration Page, Usage Page, Supplies Status Page for fuser kit & transfer kit are stored in the printer’s non-volatile memory (NVRAM). The stimulus for incrementing page counts on the Configuration Page and Usage Page are different and occur at different stages of the printing process. The page counts reported on the Configuration Page, Supplies Status Page for fuser kit & transfer kit are incremented when a page is picked from the Paper Tray. The page counts reported on the Usage Page are incremented when the toner is transferred and the page counts for each supported media size, is recorded separately in the printers volatile memory. The printer’s firmware only updates the NVRAM page counts from memory every ten pages (to preserve the life of the NVRAM chip which has a limited number of write cycles). This has the unfortunate side effect that turning off the printer could cause the loss of up to nine pages of page count information. If a printer has experienced any number of Paper Jams, Job Cancels, Paper Outs, Misprints, or Type Mismatches, the page counts on the Configuration Page and the Usage Page will not agree.

--NVRAM init – Performing an NVRAM init will erase all page counting information that is stored in NVRAM this includes page counts on the Configuration Page, Usage Page, the Image Transfer Kit and the Image Fuser Kit. All of this information can be reset in the Service Menu except the information shone on the Usage Page. All Usage Page information is lost with an NVRAM init and can not be reset.

--Non HP Cartridge In Use – There are two known scenarios that can cause this message
1. The customer is using a non hp toner cartridge.
2. Performing an NVRAM init while any of the toner cartridges are low will cause this message on the printers control panel. The customer can continue to use the print cartridge and when the toner has been exhausted, an out message will be generated. No consumable information will we available for this cartridge until it is replaced.

--Several known issues with toner level reporting have been fixed in current lj4600 firmware ( 3.006.0 and above) including abrupt changes in toner level, decreases in toner level associated with repeated opening and closing of the doors, and toner levels changing with a power cycle. If a customer is experiencing an issue with the reporting of toner levels, other than the expected anomalies associated with low and high usage models, please have the customer download the newest version of firmware.

--All print cartridge percentage and estimated pages remaining are the same and “pages remaining” for color print cartridges count decrement the same for all colors. This can have at least two different manifestations.
First and most common to the lj4600 firmware, version 3.008.2 and older; This has been seen with new printers still utilizing the original print cartridges and customers printing a high percentage of black and white pages. When printing monochrome pages, the color “pages printed with this supply” counts are incorrectly incremented. Color page counts shouldn’t be incremented when printing monochrome jobs. This is a defect and may cause all the print cartridge counts as seen in the gauges and supply status page to drop at the same rate. As soon as the toner sensor kicks in at 25% life these counts should start to diverge.
Second scenario - This has been seen with new printers still utilizing the original print cartridges as well. This is a phenomenon of the 5% coverage averaging. If the customer’s printing doesn’t deviate significantly from 5% coverage these figures may remain constant even when the cartridge is beyond the 90% usage level where pixel counting begins. When a new toner cartridge is placed in the printer, percentages for that consumable will return to 100% and page counts may decrement as expected. This is most noticeable when the printer is new because this will probably be the only time when all the print cartridges are new at the same time.

solltest du bis hier gekommen sein, glückwunsch ! ist nicht einfach zu verstehen, soll aber aufzeigen wie komplex das ganze ist. halten sollte die toner aber doch schon ein paar tausend seiten :-))
1

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