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Brother P-Touch 80 Label Maker

Touchpad
Touchpad

Here is a label maker, bought on offer at Maplin Electronics. Full Qwerty keyboard with 1 line dot matrix LCD display visible here. Power is 4 AAA cells or a 6v DC Adaptor.

Rear
Rear

Rear cover removed. Battery compartment is on the left hand side, space for the tape cartridge on the right. Ribbon cable leading to the thermal print head is on the far right, with rubber tape drive roller.

PCB
PCB

PCB under the top cover with the main CPU, a MN101C77CBM from Panasonic. This CPU features 48K Mask ROM & 3K of RAM. Max clock frequency is 20MHz. 32kHz clock crystal visible underneath a Rohm BA6220 Electronic speed controller IC.
This is used to drive the printer motor at a constant accurate speed, to feed the tape past the thermal head. Miniature potentiometer adjusts speed.
Ribbon cable at the bottom of the board connects to the print head, various wiring at the left connects to the battery & DC Jack.

Printer Drive
Printer Drive

Printer drive mechanism. Small DC motor drives the pinch roller though a gear train. DC Jack & reverse polarity protection diode is on the right.
This unit uses a centre negative DC jack, which is unusual.

Cartridge
Cartridge

Thermal tape cartridge, black text on white background.

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Epson Ink Cartridge Resetter

Interface
Interface

This is a device designed to reset Epson brand ink cartridges that are reportedly out of ink, so they again report full to the printer Here is the front of the unit, with the guide for attaching to a cartridge.

PCB Back
PCB Back

Back of the device removed. 3 button cells provide power to the PCB. Indicator LED sticks out of the top of the device for reset confirmation.
Row of pads on far left edge of the PCB are presumably a programming header for the uC on the other side of the board.

PCB Front
PCB Front

Here is the  front of the PCB, main feature being the grid of pogo pins to connect to the cartridge chip. IC on lower right of that is a MSP430F2131 uController, a Texas Instruments part.
The IC directly to the left of the pogo pin bed is a voltage regulator, to step down the ~4.5v of the batteries down to the ~3.3v that the uC requires.

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HP Photosmart 375

Top
Top

This is a HP PhotoSmart 375 portable photo printer. With built in card reader, screen & PictBridge.
Top of the printer showing the UI Buttons & Screen.

Front
Front

Front of the unit, card reader slots at the top, Pictbridge USB connector at top left. Paper out slot at bottom. Cartridge door is on the right.

Cartridge Door
Cartridge Door

Here the cartridge door is open. Takes HP 95 Tri-Colour Inkjet Cartridge.

Battery Compartment
Battery Compartment

Battery compartment on the bottom of the unit. A Li-Ion battery pack can be installed here for mobile photo printing.

Bottom Label
Bottom Label

Specifications label.

USB + Power
USB + Power

Power adaptor & USB connection for PC use.

Paper Tray
Paper Tray

Rear door opened. Showing the paper feed tray.

Paper Feeder
Paper Feeder

Rear door has been removed in this shot. Paper feed roller & platen roller can be seen here.

Rear Cover Paper Feeder
Rear Cover Paper Feeder

Paper holder attached to rear door.

Top Cover
Top Cover

Bottom of the top cover, with connections for the buttons & LCD panel.

Main PCB
Main PCB

This is the main PCB of the unit. Controls all aspects of the printer. CPU in center, card reader sockets are along bottom edge. various support circuitry surrounds the CPU.

Rear
Rear

Rear shell has been removed here. Showing the main frame & the carriage drive motor on the left.

Carriage Drive
Carriage Drive

Closeup of the carriage drive motor & timing belt system. All the motors in this printer are DC servo motors, not steppers.

Main Drive Motor
Main Drive Motor

Main drive motor, feeds paper, drives rollers, operates cleaning mechanism for the inkjets.

Shaft Encoder
Shaft Encoder

Mainshaft encoder. Main drive motor is bottom right hand side with timing belt drive.

CPU
CPU

Closeup of the CPU. This is a Phillips ARM chip, unknown spec.

Card Reader Sockets
Card Reader Sockets

Detail of the card reader sockets, this unit takes all current types of Flash memory card.

HP 95 Tri-color Inkjet Print Cartridge