HP Deskjet 600c

Revision as of 20:15, 24 March 2007

Bucknell Mechanical Design Home

Printer Dissection

Figure 1: HP Deskjet 600c Before Disassembly

Figure 2: HP Deskjet 600c Without The Case

Function

This inkjet printer is manufactured by Hewlett Packard, and is used to transpose displayed digital data onto a physical medium.

How It Prints

The computer sends a data stream to the printer through a serial, or usb cable. The control unit inside the printer deciphers the data and instructs the mechanical components to act accordingly. The following is an illustrated outline of the mechanical aspect.

1) Paper is advanced into position by the rubber rollers, which are powered by a stepper motor.

Figure 3: Rubber Rollers That Advance The Paper

Figure 4: The Stepper Motor That Powers the Rollers

2) Another stepper motor, undocks the printer carriage. The dock is used to secure the carriage, and to keep the printer head clean.

Figure 5: Docking Station For The Carriage

Figure 6: Stepper Motor That Drives The Dock Using A Worm Gear

3) The printer carriage is operated by a drive belt, which is powered by a third stepper motor.

Figure 7: Belt Drive System

Figure 8: Stepper Motor That Drives The Belt Using A Toothed Pulley

4) The printer cartridge applies ink onto the paper according to the instructions supplied by the CPU through the copper contacts.

Figure 9: Cartridge To CPU Interface

Parts

The table belows lists the components for the HP Deskjet 600c printer:

Table 1: HP Deskjet 600c Component List

Part #	Part Name	Category	Function	Material	Picture
1	Paper Tray	Structural Component	Holds Paper that is to be loaded in place	Plastic
2	Printer Housing	Structural Component	Protects internal components from the environment	Plastic
3	Large Stepper Motor	Input	Provides motion to the paper feeder mechanism	Metal casing, copper wire, magnet, gear
4	Docking Station Motor	Input	Controls the motion of the docking station	Metal casing, copper wire, magnet, gear
5	Printer Cartridge Holder and Rail	Output	Slides the Printer head along the railing from left to right	Plastic housing and metal rail
6	Paper Feed Gears	Transmission	Takes the input from the feed motor and controls the feeding of the paper	One plastic gear and one metal gear
7	CPU and Power Source	Input	Controls the entire printer and modulates the power input	Silicon, lead, copper, resistors, capacitors
8	Paper Ejector and Advancer Mechanism	Motion Conversion	Lowers the black bar so paper ejects cleanly, and raises bottom tray	Plastic
9	Print Head Motor	Input	Provides motion to print head	Metal case, copper wire, magnet, gear
10	Docking Station	Motion Conversion / Structural	Cleans and houses printer head when not printing	Plastic

Cool Animated Videos

<embed src="http://www.youtube.com/v/8_iTSznToHU" type="application/x-shockwave-flash" width="425" height="350"></embed>

Animated Printer Carriage

Right-click here and select "Save Link As" to download the video (.avi)

<embed src="http://www.youtube.com/v/iayt04lR08E" type="application/x-shockwave-flash" width="425" height="350"></embed>

Animated Paper Feed Mechanism

Right-click here and select "Save Link As" to download the video (.avi)

Analysis

Analysis Of The Belt System