2 Find Russian equivalents; mind the meaning of these expressions:

single line thermal head	valuable data
print pulse time	in roll form
the latent image on the drum	a cut sheet
bubble jet ink cartridge ignorant	appropriate conditions in conjunction with
urgent	proprietary
for confidential operation	tremendous
an enhancement

3 Answer the questions:

1. What are methods of printing the facsimile image?

2. Describe thermal printers.

3. Show the difference between thermal and plain paper printers.

4. What is used for offset printing?

5. What is the simplest way to print on plain paper?

6. What technique is being used in facsimile equipment?

7. What is the difference between 3 classes of G4 digital equipment?

5. Translate in written form points

PART 4 (60.6 – 60.7)

60.6 G3 networks, switches, gateways and pc fax.

The success of G3 facsimile has encouraged the provision of addi­tional equipment/facilities to enhance operation and provide cost savings. The communication interfaces are based on T.4 and T.30 recommendations and follow standard facsimile protocols. Where these units are provided by suppliers different from the machine suppliers, the NSF proprietary operation is often precluded. This can result in a loss of facilities and an increase in transmission time. It may also mean that because of simple interfaces used, MR, ECM, 14.4kbit/s CCITT options are not implemented and transmission efficiency is limited.

60.6.1 Managed network use

By the provision of store and forward units with multiline PSTN access, a network operator or value added supplier can relieve the user of major distribution tasks and free the user's machine for other work. With multiline access it is realistic to consider a regular broadcast transmission to 10000 recipients from a single originator transmission to the store. To some extent the network operator can schedule the traffic to suit network loading and therefore offer practical tariffs which could compensate for the delay in delivery and the subsequent confirmation report necessary.

60.6.2 Facsimile switches

The requirements of some major users include facsimile traffic control and costing, archival recording of all transferred facsimile messages and controlled distribution of centrally received incoming messages. By routing the facsimile traffic through an intelligent central switch, possibly associated with the company PBX, the required monitoring and control functions can be provided with cost and traffic reporting developed to suit the individual needs of the user. (Figure 60.8.)

One main area of concern for facsimile users is the onward distribution of documents received at central machines maybe lo­cated in the mail room. Onward distribution is often delayed waiting for the next mail round, and onward transmission by facsimile to the department in question is sometimes not felt desirable.

One solution being considered is that the facsimile switch can have a soft copy display of the facsimile message on a VDU. An operator would then display and readdress the document for onward transmission from memory. Clearly, for efficient operations, a suit­able compromise must be made between the switch capital cost and the time required by the operator, to re-route the document.