You need to restart the print spooler.
Print queue is when a list of documents or files have been sent to a printer for printing and they are waiting to be printed.
X The filenames of the documents waiting to print X The current status of print jobs X The names of senders of current print jobs
Users in the Administrator and Power User groups are assigned the manage Printers permission level, which means they have complete control over a printer, including printer settings and the print queue. A third permission level, Manage Documents, can be assigned to a user so that the user can manage the print queue while not being allowed to change printer settings. I found this answer on page 621 under Notes section in A+ Guide to Software: Managing, Maintaining, and Troubleshooting Fourth Edition
print server
enqueue is a command in Unix-based operating systems that adds a print job to the CUPS (Common Unix Printing System) print queue. It is used to send a file to be printed, defining specific printing options and the destination printer. The enqueued print job will wait in the print queue until processed.
If a printer is already printing a document, it can not print another document until the printing of the first document has finished. Therefore, the second document must form a (print) queue and wait its turn.
queue
A spool.
This is really dependent how your queue is implemented. Unfortunately, working from the outside of a queue, this is usually impossible without removing all elements from the queue. while !queue.isEmpty() print queue.dequeue()
queue
Delete Front---- DQDELETE_FRONT(QUEUE, FRONT, REAR, ITEM) 1. [check for queue underflow] If FRONT<0, Then: Print: "Queue is empty", and Return. 2. ITEM = QUEUE[FRONT]; 3. Set FRONT = FRONT + 1. 4. Return. Delete Rear---- DQDELETE_REAR(QUEUE, REAR, FRONT, ITEM) 1. [check for queue underflow] If REAR<0, Then: Print: "Queue is empty", and Return. 2. ITEM = QUEUE[REAR]. 3. Set REAR = REAR - 1. 4.Return.
A printer driver is a bit of software that instructs a printer how to work. Without such a driver, the printer may not work, or print rubbish. A print queue forms when a print job is sent to the printer that is already printing. Once the first print job has been completed, the second print job is then printed.