HP PCL Commands

!

Method 1 requires byte pairs: a Transfer Raster (Esc * b # V or Esc * b # W) command

with an odd value field is ignored and the data discarded.

 

 

 

 

 

 

 

 

 

 

Method 2 - Tagged Image File Format Encoding (TIFF revision 4)

 

 

 

 

Method 2 (“packbit” encoding) combines methods 0 and 1, with blocks of repeated bytes and

 

blocks of literal (unencoded) bytes. A control byte precedes the raster data; it indicates the

 

number of succeeding bytes, and whether they are repeated or literal.

 

 

 

 

The control byte is in 2’s complement format. If bit 7 is set (byte = -1 to -127), the following

 

bytes are repeated. The control byte’s absolute value is the number of repetitions (occur-

 

rences = repetitions + 1). For example, a control byte of -5 means the subsequent byte is

 

repeated 5 times (6 occurrences).

 

 

 

 

 

 

 

 

If bit 7 of the control byte is zero (byte = 0 to 127), the following bytes are literal. The number

 

of succeeding data bytes is 1 + the value of the control byte. A control byte of 0 means 1 literal

 

byte follows; a control byte of 6 means 7 literal bytes follow.

 

 

 

 

 

A control byte of -128 is ignored; the next byte is then treated as a control byte.

 

 

 

It is more efficient to code two consecutive identical bytes as a repeated byte, unless these

 

bytes are preceded and followed by literal bytes. Three-byte repeats should always be

 

encoded as replicate runs.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

!

The row length indicated by the Transfer Raster commands (Esc * b # V, Esc * b # W)

has precedence if it is met before the literal run count.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EXAMPLES OF METHODS 0 - 2:

 

 

 

 

 

 

 

 

The following examples show how methods 0 - 2 can be used to send the raster row below:

 

 

 

 

 

 

 

 

 

 

 

 

 

Byte Number

#1

 

#2

#3

#4

 

#5

#6

#7

 

 

Bits

01010101.

01010101.

01010101.

01010101.

01000001.

01010100.

01010100

 

 

ASCII

 

U

 

U

U

U

 

A

T

T

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Compression method 0 - Unencoded

Esc*r1 A

Esc*b0m7WUUUUATT

Esc*rC

78

HP DeskJet 600, 700, 800, 900 & HP 2000 Series PCL Developer’s Guide

Page 77 Page 79
Page 78
Image 78
HP 800 Method 2 Tagged Image File Format Encoding Tiff revision, Has precedence if it is met before the literal run count
Page 77 Page 79

800, 700 specifications

The HP 700 is a noteworthy addition to HP's lineup of enterprise-level printers, designed specifically to meet the demands of small to medium-sized businesses. With an emphasis on speed, efficiency, and high-quality printing, the HP 700 series has carved a niche for itself in the competitive printing market.

One of the standout features of the HP 700 is its impressive print speed, which can reach up to 40 pages per minute. This rapid output ensures that businesses can keep up with their demanding workloads without sacrificing quality. The printer also offers a fast first-page-out time, allowing users to access their prints more quickly, which is especially beneficial in busy office environments.

Connectivity is another important aspect of the HP 700 series. The printer supports multiple connectivity options, including USB, Ethernet, and Wi-Fi, allowing for versatile integration into existing office networks. The inclusion of mobile printing capabilities enhances user experience; employees can print directly from their smartphones or tablets using HP's Mobile Print Solutions, making it easier to meet on-the-go printing needs.

The HP 700 is equipped with advanced security features, such as secure boot and firmware integrity checking, ensuring that sensitive documents remain protected against unauthorized access. Additionally, it includes features like PIN printing, which provides an extra layer of security by requiring users to enter a PIN before their documents are released for printing.

In terms of sustainability, the HP 700 is designed with energy efficiency in mind. It employs HP’s EcoSmart Black Toner technology, which not only delivers exceptional print quality but also contributes to lower energy consumption and reduced environmental impact. The printer is also compatible with HP's Cartridge Recycling program, allowing businesses to responsibly dispose of used toner cartridges.

The print resolution of the HP 700 series is another strong selling point, offering up to 1200 x 1200 dpi. This high resolution ensures that text and images come out crisp and clear, making it suitable for a wide range of applications, from professional documents to vibrant marketing materials.

In summary, the HP 700 series combines high-speed printing, versatile connectivity, robust security features, and energy efficiency, all while delivering exceptional print quality. These attributes make it an ideal choice for businesses looking to enhance their productivity and streamline their printing processes. Whether for day-to-day operations or specialized tasks, the HP 700 stands out as a reliable and efficient printing solution.
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