Canon iR3570 Series, Service Manual

Page: 479 / 722

Chapter 11
11-1
11.1 MEAP
11.1.1 Overview
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iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 /
The term MEAP stands for Multifunctional Embedded Application Platform, and is used to generically refer to a platform for software built into MFPs and periph-
eral equipment. The architecture is based on Java (J2ME, i.e., Java 2 Platform Micro Edition), and is designed to enable the execution of Java applications.
A MEAP application behaves independently from its host printer's system software, and may be installed or uninstalled using SMS (Service Management Service),
which is an interface that runs as part of the browser on a PC. As long as the device supports MEAP, most MEAP applications may be added to the device in the field.
11.1.2 MEAP Counter
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iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 /
In addition to the commonly found print counters, a device that supports MEAP is equipped with a counter mechanism used to keep track of which functions are
used as well as how often they are used for individual MEAP applications that are installed. The MEAP counter readings may be checked by making the following
selections on the device control panel: Counter Check Key>MEAP Counter Check. A device may possess the following MEAP counters, and which counter to use
and, therefore, to display all depend on the application in question.
A counter reading may be of a type that is forced to increase as a job is expected or of a type that is increased when the application sends instructions; or, it may be
of a type that increases independently of the host device, thus increasing solely in response to the application being run; specifics are as follows:
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MEMO:
forced: the device forces the counter to increase its reading in response to execution of a job.
in response to instructions from application: the counter increases its reading only in response to instructions from the application.
application independent: the counter operates according to the specifications of the application.
11.1.3 Construction of the MEAP Platform
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iR2270 / iR2870 / iR3570 / iR4570 / / iR2270N / / iR2870N / / iR3570N / / iR4570N / iR2230 /
In addition to the installation of the system software, language file, and RUI, a printer equipped with MEAP functions calls for the installation of MEAP content,
which offers functions (system services) needed to run MEAP applications and class libraries needed by the MEAP applications to control the device.
It is important that the version of the system software be fully compatible with the version of the MEAP content, calling for special care. (In the case of a mismatch,
the device will not be able to run the MEAP application.) For version information, refer to the Service Information bulletin that is released in conjunction with the
system software.
The following shows the components of a MEAP application:
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[1] User Interface Control Bock
installed as part of the system software
[2] Device Control Block
installed as part of the system software
[3] Operating System
installed as part of the system software
[4] Java VM
Type Count item
forced total
total (black-and-white 1)
total (black-and-while large)
scan (total 1)
black-and-white scan (total 1)
in response to instructions from application black-and-white scan 1
black-and-white scan 2
black-and-white scan 3
black-and-white scan 4
application-independent free 1
free 2
free 3
free 4
free 5
free 6
free 7
free 8
free 9
free 10
free 11
free 12
[2]
[3]
[4]
[5]
[6]
[7] [8]
[1]