Costos Y Presupuestos

DIFFERENCES FROM THE A294 I / A295 I MODELS

DIFFERENCES FROM THE A294 I / A295 I MODELS
1. DETAILED SECTION DESCRIPTIONS
1.1 TONER AND DEVELOPER
The toner and developer have been changed over to a finer-grained type.
Toner Developer A294 I / A295 I 9.5µ 80µ A294 II / A295 II 6.8µ 65µ

These changes were made to maximize the reproduction in halftone areas and the evenness of the imagedensity in black solid areas.
A294 II/ A295 II

1.2 NEWLY ADDED: DEVELOPMENT SUCTION MOTOR AND SUCKED TONER COLLECTION BOTTLE
In order to ensure that the new granular toner does not scatter, a development suction motor [A] has been added to decrease the pressure inside the development unit [B]. This motor is on whenever the development motor is on. When air is sucked out of the development unitby the motor, there is also some toner included (although very minimal). A sucked toner collection bottle [C] has been added to collect this toner. The new bottle and motor have Near End/End and replacement time conditions, respectively. The display for the existing waste toner bottle Near End/End is used. As the alerts can only be displayed for one component at a time, when displayed, use SP2971to confirm which component it is referring to. The target replacement intervals are as follows:
Development Suction Motor Sucked Toner Collection Bottle Target Replacement Interval 600 hours (corresponding to 2,400K prints) 300 hours (corresponding to 1,200K prints)

[C]

[A]

[B]

A294D731.WMF

NOTE: The End condition alert is a pop-up window, and the Near End alert is a 1line display.SM

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A294/A295

DIFFERENCES FROM THE A294 I / A295 I MODELS

1.3 DEVELOPMENT UNIT
1. Grounding of the development roller doctor blade. This is to further ensure that the development roller surface stays clean, i.e. the development bias is properly maintained at the target level. 2. Thinning of the development unit entrance seals. This is to further ensure that vertical blacklines do not occur. 3. Increased reliability of the development unit. To ensure that the new fine-grained toner does not cause a shaft lock, fluorinetype seals are now used around the roller shaft. 4. Air tube newly added (development unit filter deleted). This tube has been added to carry the air and toner sucked out by the new development suction motor. The air tube has been attached in the areawhere the development filter was, and so this filter has been deleted. 5. SP mode newly added for controlling the toner supply interval. SP2974 (Toner Supply Interval) determines the copy interval for toner supply.
Settings Interval 0 1/1 1 (default) 1/2 2 1/3 3 1/4

This SP mode normally does not need to be used. However, depending on the customer's operating conditions and installationenvironment, the following two symptoms can occur. SP2974 could then be utilized to solve them: • If the following symptoms appear with a setting of 1, changing the setting to 2 can minimize them: 1) Dirty background near the leading edge 2) The leading edge (face) of the copy stack is dirty with toner NOTE: Please use setting 3 only when these two symptoms occur on most of the extremely low image areaoriginals used by the customer. • If the following symptoms appear with a setting of 1, changing the setting to 0 can minimize them: 1) Low image density in originals with a large image area 2) Low image density when Vsp has stabilized at 0.5 or higher. Reference: With the addition of SP2974, the operation of SP2968 (Toner Density Correction) has been changed as follows: 1. Number of copiesPrevious:Applied to number of copies set in SP2968 New: Applied to (number of copies set in SP2968) X (SP2974 value + 1) 2. Vref Previous:Vref changed every 100 copies New: Vref changed every (100) X (SP2974 value + 1) copies

A294/A295

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SM

DIFFERENCES FROM THE A294 I / A295 I MODELS

1.4 TONER BANK UNIT
1. The toner bottle gear has been modified so that it is not possible to set the...