Avery Dennison ALX 720 - Manual (Page 97)

Operators Manual
ALX 720
4/09 Page 97 Card plug in modules
9.2 Memory types
9.2.1 PROM card (Programmable Read Only Memory)
Programmable only with a special program unit (EPROM burner) – it is a on time card, normally
used to store fonts and logos witch are used again and again in the same shape size or look
like. The card will be programmed in the factory due to the customer wishes.
Memory size and capacity depends to the printer.
9.2.2 EPROM card (Erasable Programmable Read Only Memory)
Programmable only with a special program unit (EPROM burner) – it is a on time card, normally
used to store fonts and logos witch are used again and again in the same shape size or look
like. The card will be programmed in the factory due to the customer wishes. The difference
between EPROM and PROM card is that the EPROM card can be cleared by using ultra violet
light.
Is not used in our printer.
9.2.3 EEPROM or E²PROM (Electric Erasable Programmable Read Only
Memory)
The function is similar to an EPROM card – to clear the memory there is no light used, it works
with electric power. The clear procedure is very slow. The data are hold in the memory after
power down – without battery !
Is not used in our printer.
9.2.4 FLASH RAM / PROM card
A name used and defined by the company INTEL witch has used this technology first. The
memory is build similar to the EEPROM but can be cleared in single sectors. A low voltage (5V)
is enough to clear the memory and this voltage is available in the most places (PC/printer). The
clear procedure is very fast, the data’s are stored in the memory after power down – without
battery.
This card is re programmable and can be programmed in a PC with the data’s. Stored on this
card type can be fonts and logos – same as on the EPROM card. In difference it is possible to
store as well formats.
Memory size is different depending on card type and printer.
9.2.5 RAM card (Random Access Memory)
Very fast, volatile memory. Each single memory cell is programmable and readable. Using
RAM card means that a battery is used to make the memory non volatile- the data’s are still in
the memory after power is switched off, reasoned by the power of the battery.
The card type is re programmable and depending on the printer type the card can be
programmed in the printer (via down load) or at the PC. It is possible to store – similar to the
EPROM card, as well logos fonts but different to the EPROM card as well formats
Memory size is different depending on card type and printer.