Ricoh

Limitations:

It is possible to reach negative quota balance. It is mainly caused by slow connection between the device and the server.
If user has less balance then is needed to perform 5 copies. The user is restricted to perform any copy job. To allow copying, quota balance must satisfy the following conditions:
- BW COPY, COLOR COPY, COLOR, BW - if defined, balance of each of them must be at least 5
- COPY - must be at least BW COPY + COLOR COPY or BW + COLOR (if they are defined), depending on which of the two sums is bigger
Similarly, if user has quota for all pages enabled, he must have at least 5 pages available to be allowed to copy. If user quota balance gets under 5 pages during copy job, his access to copy operation will be restricted.

Samsung

Quota limitations:

Regardless of real page amount in print and copy jobs a device always asks for quotas in 10 quotas chunks. When user does not have 10 quotas then server calculates how many pages can be printed from current user quota and the request is satisfied just partially. As a result few pages from job might not be printed if quota is insufficient.
When more jobs are to be printed then device asks for quotas for all of them one by one before executing them. Due to above described limitation not all jobs/pages are printed even if user has sufficient quota for all of them. User can print all jobs in one by one way.
Due to firstly described limitation a mixed job might not be fully printed despite the fact that user has sufficient quota for all pages. Device asks for 10 quotas always when transition between bw and color type is reached. It can happen that 10 quotas is allocate for the first transition despite the fact that less amount is really needed and more amount would be needed for the other color type during following quota request. Thus quotas are blocked without possibility to use it at the moment they would be needed elsewhere. Certain combinations of quota setting are more prone (money credit) than others (explicit distinction between bw and color quota).

Device limitations:

It may occasionally happen, that device stops requesting reservations of quotas. In this case, users are not limited in their actions, although operations are accounted by SafeQ. To fix that, it is necessary to clear the main memory of the device and install the device's firmware again.

Limitations:

It is not possible to use quota defined as PRINT or COPY (without color specification). Only definitions like PRINT COLOR or COPY BW are allowed.
Print all or print more jobs - it is possible that not all jobs are printed. It depends on balance of quotas. The strategy for reservation is the same as for credit handling.
- Balance < 100 - whole quota is reserved (jobs have to be printed one by one)
- Balance >= 100 - half of quota is reserved (jobs can be printed in batches)
It is possible, that device will copy or print up to 3 pages more than allowed by quotas. Therefor, user can end up with negative quota limit.

Known issues:

TS-1764 - If user starts copying with 0 quota for copy, all remaing quotas are reserved and not returned in reasonable time Closed

Limitations:

Stop-on-zero works only with a single quota defined for user. Reason: With Konica Minolta, we can only restrict number of operations and some functions of the device. This can be done only at the authentication.
- If multiple quotas are defined, in the most cases, the number of possible operations is a sum of all the quotas. (e.g. PRINT 1 and COPY 1 makes 2 possible operations)
  - In detail, the number of operations is the maximum of the following sets of quotas:
    - PRINT + COPY
    - COLOR + BW
    - PRINT BW + PRINT COLOR + COPY BW + COPY COLOR
    - COPY + PRINT BW + PRINT COLOR
    - PRINT + COPY BW + COPY COLOR
  - If no of these sets can be found among the defined quotas, there must be an unlimited operation. The rest of the operations are limited by the maximum of the sets defining them.
- Operations (functions) related to quotas with zero or negative remaining balance are restricted upon login. (e.g. COLOR 0 restricts user from performing any color jobs)
- Operations (functions) related to quotas, that are not defined, are unlimited for user. (e.g. quotas PRINT COLOR, PRINT BW make copying unlimited)
If any quota balance reaches exactly 0, a warning screen is displayed with a button "Start" on it. User must log out.

Possible scenarios:

User has COPY 1, PRINT 1, BW1. Upon login, no function is disabled and the user gets 2 operations. User can now perform any two operations in one session.
- Example 1: The user performs 2 BW prints. Resulting quotas are COPY 1, PRINT -1, BW -1. Upon next login, the user is restricted to perform any BW jobs and any print jobs with 1 action left. Thus the user can perform only 1 color copy.
- Example 2: The user performs 1 BW print and 1 color copy. Resulting quotas are COPY 0, PRINT 0, BW 0. User can now not perform any further operations.
- Example 3: The user performs 1BW print and 1 BW copy. Resulting quotas are COPY 0, PRINT 0, BW -1. User can now not perform any further operations.
- Example 4: The user performs 2 color prints. Resulting quotas are COPY 1, PRINT -1, BW 1. Upon next login, the user is restricted to perform any print jobs with 1 action left. Thus the user can perform only 1 copy.

Limitations:

Users are not restricted in printing using direct queue or the Print all functionality, even with negative quotas amount. It is recommended to disable these features while using print quotas.
It is not possible to use quotas PRINT, COPY, COLOR, BW (but it is possible to use their combinations, e.g. PRINT COLOR)
With fujiXeroxEnableDefaultQuotaTogglingStrategy enabled, only half of Quota for all pages can be used for printing, the other half is divided between BW and color copy jobs. If user has quota for all pages = x, then
- BW Copy = x/4
- Color Copy = x/4
- Print = x - x/4 - x/4
With fujiXeroxEnableDefaultQuotaTogglingStrategy disabled, when user chooses Copy operation, the quota balance is divided between BW and color copy jobs. If user has quota for all pages = x, then
- BW Copy = x/2
- Color Copy = x - x/2