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HP LaserJet 4345 MFP Series Products - Specifications

Overview

This MFP can function as a standalone, walk-up copier. It is not necessary to install the printing system software on the computer, nor is it necessary to have the computer turned on to make photocopies. You can adjust the copy settings at the control panel. You can also copy originals by using either the ADF or the scanner glass. The MFP can process copying, printing, and digital-sending jobs simultaneously.

The MFP also offers color-scanning and digital-sending capabilities. By using the control panel, you can scan black-and-white or color documents and send them to an email address as an email attachment. To use digital sending, the MFP must be connected to a local area network (LAN). The MFP connects directly to your LAN.

The HP LaserJet 4345x MFP, HP LaserJet 4345xs MFP, and HP LaserJet 4345xm MFP models come with an HP LaserJet analog fax accessory 300 already installed. Windows users can also install the optional HP Digital Sending Software (DSS), which provides digital faxing services.

Specifications for the HP LaserJet Analog Fax Accessory 300 are available in the HP LaserJet Analog Fax Accessory 300 User Guide . A printed copy of this guide is provided with the HP LaserJet 4345x MFP, HP LaserJet 4345xs MFP, and HP LaserJet 4345xm MFP.

Available Configurations

The HP LaserJet 4345MFP Series is available in the following configurations.

HP LaserJet 4345MFP (Q3942A—base model)

The HP LaserJet 4345MFP comes standard with the following items:

  • A 100-sheet input tray (tray 1)

  • A 500-sheet input tray (tray 2)

  • An automatic document feeder (ADF) that holds up to 50 pages

  • An HP Jetdirect embedded print server for connecting to a 10/100Base-T network

  • 128 megabytes (MB) synchronous dynamic random access memory (SDRAM)

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HP LaserJet 4345x MFP (Q3943A)

The HP LaserJet 4345x MFP has the same features as the base model and also includes the following items:

  • An automatic duplex printing accessory (duplexer)

  • An additional 500-sheet feeder (tray 3)

  • An analog fax accessory

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HP LaserJet 4345xs MFP (Q3944A)

The HP LaserJet 4345xs MFP has the same features as the base model and also includes the following items:

  • An automatic duplex printing accessory (duplexer)

  • An additional 500-sheet feeder (tray 3)

  • An analog fax accessory

  • A stapler/stacker accessory

  • A cabinet/stand

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HP LaserJet 4345xm MFP (Q3945A)

The HP LaserJet 4345xm MFP has the same features as the base model and also includes the following items:

  • An automatic duplex printing accessory (duplexer)

  • An additional 500-sheet feeder (tray 3)

  • An analog fax accessory

  • A 3‑bin mailbox accessory

  • A cabinet/stand

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Physical specifications

Product dimensions
Product
Height
Depth
Width
Weight
HP LaserJet 4345MFP
545 mm (21.5 inches)
483 mm (19.0 inches)
762 mm (30.0 inches)
44.1 kg (97.2 lb)
HP LaserJet 4345x MFP
667 mm (26.3 inches)
483 mm (19.0 inches)
762 mm (30.0 inches)
52.4 kg (115.5 lb)
HP LaserJet 4345xs MFP
111.0 cm (43.7 inches)
483 mm (19.0 inches)
914 mm (36.0 inches)
58.4 kg (128.7 lb)
HP LaserJet 4345xm MFP
111.0 cm (43.7 inches)
483 mm (19.0 inches)
914 mm (36.0 inches)
58.2 kg (128.3 lb)
Optional 500-sheet feeder
122 mm (4.8 inches)
483 mm (19.0 inches)
559 mm (22.0 inches)
8.3 kg (18.3 lb)
Optional cabinet
440 mm (17.3 inches)
762 mm (30.0 inches)
825.5 mm (32.5 inches)
41.8 kg (92.2 lb)
Optional stapler/stacker
6.0 kg (13.2 lb)
Optional 3-bin mailbox
5.8 kg (12.8 lb)
Optional Envelope feeder
2.5 kg (5.5 lb)
Optional duplexer
2.5 kg (5.5 lb)

Without print cartridge

Product dimensions, with all doors and trays fully opened
Product
Height
Depth
Width
HP LaserJet 4345MFP
889 mm (35.0 inches)
876 mm (34.5 inches)
142.2 cm (56.0 inches)
HP LaserJet 4345x MFP
101 cm (39.8 inches)
876 mm (34.5 inches)
142.2 cm (56.0 inches)
HP LaserJet 4345xs MFP
145 cm (57.0 inches)
117 cm (46.0 inches)
157.5 cm (62.0 inches)
HP LaserJet 4345xm MFP
145 cm (57.0 inches)
117 cm (46.0 inches)
157.5 cm (62.0 inches)

Electrical specifications

WARNING: Power requirements are based on the country/region where the printer is sold. Do not convert operating voltages. This can damage the printer and void the product warranty.
Power requirements (HP LaserJet 4345MFP Series)
Specification
110-volt models
230-volt models
Power requirements
110 to 127 volts (± 10%)
50/60 Hz (± 2 Hz)
220 to 240 volts (± 10%)
50/60 Hz (± 2 Hz)
Rated current
10.0 Amps
4.5 Amps
Power consumption HP LaserJet 4345MFP Series (average, in watts)
Product model
Copying
Printing
Ready
Sleep
Off
HP LaserJet 4345MFP
800 W
790 W
44 W
15 W
0.25 W
HP LaserJet 4345x MFP
800 W
790 W
49 W
15 W
0.25 W
HP LaserJet 4345xs MFP
800 W
790 W
49 W
15 W
0.25 W
HP LaserJet 4345xm MFP
800 W
790 W
49 W
15 W
0.25 W

Values subject to change. See http://www.hp.com/support/lj4345MFP for current infromation.

Power numbers are the highest values measured using all standard voltages.

HP LaserJet 4345MFP Series printing and copying speeds are 45 ppm Letter size and 43 ppm A4 size.

Default time from Ready mode to Sleep = 60 minutes.

Recovery time from Sleep to start of printing = less than 10 seconds.

Heat dissipation in Ready mode = 167 BTU/hour.

Acoustic specifications

Sound power and pressure level (HP LaserJet 4345MFP Series)
Sound power level
Declared per ISO 9296
Printing
LWAd = 7.0 Bels (A) [70 dB(A)]
Copying
LWAd = 7.2 Bels (A) [72 dB(A)]
Ready
LpAm =47 dB (A)
Sound pressure level
Declared per ISO 9296
Printing
LpAm =55 dB (A)
Copying
LpAm =56 dB (A)
Ready
LpAm =33 dB (A)

Values subject to change. See http://www.hp.com/support/lj4345MFP for current information.

HP LaserJet 4345MFP Series speed is 43 ppm A4 size.

Configuration tested (HP LaserJet 4345MFP): Base model, simplex printing with A4 paper size.

Environmental specifications

Environmental condition
Printing
Storage/standby
Temperature (printer and print cartridge)
10° to 32.5°C (50° to 89°F)
-20° to 40°C (-4° to 104°F)
Relative humidity
10% to 80%
10% to 90%

Image area

The MFP can place printed or copied images on the page within the following margins:

  • Printing : 4.23 mm (0.167 inches) from each edge

  • Copying (standard): 4.23 mm (0.167 inches) from each edge

  • Copying (edge-to-edge): 2.0 mm (0.08 inches) from each edge

To use edge-to-edge copying, touch CONFIGURE DEVICE , touch SYSTEM SETUP , touch COPY/SEND SETTINGS , and then touch EDGE-TO-EDGE COPIES .

NOTE: Do not use edge-to-edge copying as the default setting because it can result in printing off the page. This can cause print-quality defects and can cause damage to the MFP internal components.
NOTE: Margins vary when using digital sending. The margins depend on the type of file being sent and its dpi resolution.

Skew specifications

The MFP has the following skew specifications:

  • Print engine (cut-sheet paper): less than 1.5 mm (0.059 inches) over a 260 mm (10.24 inch) length

  • Print engine (envelopes): less than 3.3 mm (0.13 inches) over a 220 mm (8.66 inch) length

  • ADF and scanner glass (cut-sheet paper): less than 0.6%

Paper media specifications

For complete paper specifications for all HP LaserJet printers and MFPs, see the HP LaserJet Printer Family Print Media Guide (available at http://www.hp.com/support/ljpaperguide ).

Category
Specifications
Acid content
5.5 pH to 8.0 pH
Caliper
0.094 to 0.18 mm (3.0 to 7.0 mils)
Curl in ream
Flat within 5 mm (0.02 inch)
Cut edge conditions
Cut with sharp blades that create no visible fray.
Fusing compatibility
Must not scorch, melt, offset, or release hazardous emissions when heated to 200°C (392°F) for 0.1 second.
Grain
Long grain
Moisture content
3% to 9% by weight
Smoothness
100 to 250 Sheffield

Supported types and sizes of print media

Supported types of media
Type of media
Tray 1
Trays 2, 3, 4, and 5
Optional duplexer
Optional envelope feeder
3‑bin mailbox or stacker part of stapler/stacker
Stapler part of stapler/stacker
Plain
X
X
X
X
X
X
Preprinted
X
X
X
X
X
X
Letterhead
X
X
X
X
X
X
Transparency
X
X
X
Prepunched
X
X
X
X
X
Labels
X
X
X
X
X
Bond
X
X
X
X
X
X
Recycled
X
X
X
X
X
X
Color
X
X
X
X
X
X
Cardstock
X
X
X
Rough
X
X
X
X
X
X
Envelope
X
X
X

Face-up delivery only.

If a 3-bin mailbox is installed, select the bottom bin when printing on cardstock. Media weights that are 200 g/m2 or greater are supported only in the bottom bin.

Tray 1 supported sizes and weights
Size
Dimensions
Weight
Capacity
Letter
216 x 279 mm (8.5 x 11 inches)
60 to 200 g/m2 (16 to 53 lb)
100 sheets of 75 g/m2 (20 lb) paper
A4
210 x 297 mm (8.3 x 11.7 inches)
Legal
216 x 356 mm (8.5 x 14 inches)
Executive
184 x 267 mm (7.3 x 10.5 inches)
Statement
140 x 216 mm (5.5 x 8.5 inches)
8.5x13
216 x 330 mm (8.5 x 13 inches)
A5
148 x 210 mm (5.8 x 8.3 inches)
B5 (JIS)
182 x 257 mm (7.2 x 10.1 inches)
Executive (JIS)
216 x 330 mm (8.5 x 13 inches)
D Postcard (JIS)
148 x 200 mm (5.8 x 7.9 inches)
16K
197 x 273 mm (7.75 x 10.75 inches)
Custom
Minimum: 76 x 127 mm (3 x 5 inches)
Maximum: 216 x 356 mm (8.5 x 14 inches)
Envelope Commercial #10
105 x 241 mm (4.1 x 9.5 inches)
75 to 105 g/m2 (20 to 28 lb)
10 envelopes
EnvelopeDL ISO
110 x 220 mm (4.3 x 8.7 inches)
EnvelopeC5 ISO
162 x 229 mm (6.4 x 9.0 inches)
EnvelopeB5 ISO
176 x 250 mm (6.9 x 9.8 inches)
EnvelopeMonarch #7-3/4
98 x 191 mm (3.9 x 7.5 inches)

The MFP supports a wide range of sizes. Check the MFP software for supported sizes.

Capacity can vary depending on paper weight and thickness, as well as environmental conditions.

To print on custom-size paper, see Printing on small sizes, custom sizes, or heavy paper .

Trays 2, 3, 4, and 5 supported sizes and weights
Size
Dimensions
Weight
Capacity
Letter
216 x 279 mm (8.5 x 11 inches)
60 to 120 g/m2 (16 to 32 lb)
500 sheets of 75 g/m2 (20 lb) paper
A4
210 x 297 mm (8.3 x 11.7 inches)
Executive
184 x 267 mm (7.3 x 10.5 inches)
Legal
216 x 356 mm (8.5 x 14 inches)
B5 (JIS)
182 x 257 mm (7.2 x 10.1 inches)
A5
148 x 210 mm (5.8 x 8.3 inches)
8.5x13
216 x 330 mm (8.5 x 13 inches)
Executive (JIS)
216 x 330 mm (8.5 x 13 inches)
16K
197 x 273 mm (7.75 x 10.75 inches)
Custom
Minimum: 148 x 210 mm (5.8 x 8.3 inches)
Maximum: 216 x 356 mm (8.5 x 14 inches)

The MFP supports a wide range of sizes. Check the MFP software for supported sizes.

Capacity can vary depending on paper weight and thickness, as well as environmental conditions.

To print on custom-size paper, see Printing on small sizes, custom sizes, or heavy paper .

Optional duplexer supported sizes and weights
Size
Dimensions
Weight
Letter
216 x 279 mm (8.5 x 11 inches)
60 to 120 g/m2 (16 to 32 lb)
A4
210 x 297 mm (8.3 x 11.7 inches)
Executive
184 x 267 mm (7.3 x 10.5 inches)
Legal
216 x 356 mm (8.5 x 14 inches)
B5 (JIS)
182 x 257 mm (7.2 x 10.1 inches)
A5
148 x 210 mm (5.8 x 8.3 inches)
8.5x13
216 x 330 mm (8.5 x 13 inches)
Executive (JIS)
216 x 330 mm (8.5 x 13 inches)
16K
197 x 273 mm (7.75 x 10.75 inches)
Optional envelope feeder supported sizes and weights
Size
Dimensions
Weight
Capacity
Monarch #7-3/4
98 x 191 mm (3.9 x 7.5 inches)
75 to 105 g/m2 (20 to 28 lb)
75 envelopes
Commercial#10
105 x 241 mm (4.1 x 9.5 inches)
DL ISO
110 x 220 mm (4.3 x 8.7 inches)
C5 ISO
162 x 229 mm (6.4 x 9.0 inches)
B5 ISO
176 x 250 mm (6.9 x 9.8 inches)
Optional 3‑bin mailbox or stacker part of the stapler/stacker supported sizes and weights
Size
Dimensions
Weight
Capacity
Letter
216 x 279 mm (8.5 x 11 inches)
For the stacker on the stapler/stacker or the lower bin on the 3‑bin mailbox: 500 sheets of 75 g/m2 (20 lb) paper
For the top two bins on the 3‑bin mailbox: each can hold 100 sheets of 75 g/m2 (20 lb) paper.
A4
210 x 297 mm (8.3 x 11.7 inches)
Executive
184 x 267 mm (7.3 x 10.5 inches)
Legal
216 x 356 mm (8.5 x 14 inches)
B5 (JIS)
182 x 257 mm (7.2 x 10.1 inches)
A5
148 x 210 mm (5.8 x 8.3 inches)
Statement
140 x 216 mm (5.5 x 8.5 inches)
8.5x13
216 x 330 mm (8.5 x 13 inches)
Executive(JIS)
216 x 330 mm (8.5 x 13 inches)
DPostcard(JIS)
148 x 200 mm (5.8 x 7.9 inches)
16K
197 x 273 mm (7.75 x 10.75 inches)
Envelope #10
105 x 241 mm (4.1 x 9.5 inches)
Envelope Monarch #7-3/4
98 x 191 mm (3.9 x 7.5 inches)
Envelope C5 ISO
162 x 229 mm (6.4 x 9.0 inches)
Envelope DL ISO
110 x 220 mm (4.3 x 8.7 inches)
Envelope B5 ISO
176 x 250 mm (6.7 x 9.8 mm)
Custom
Minimum: 76 x 127 mm (3 x 5 inches)
Maximum: 216 x 356 mm (8.5 x 14 inches)

The MFP supports a wide range of sizes. Check the MFP software for supported sizes.

Capacity can vary depending on paper weight and thickness, as well as environmental conditions.

To print on custom-size paper, see Printing on small sizes, custom sizes, or heavy paper .

Face-up delivery only.

Stapler part of the optional stapler/stacker supported sizes and weights
Size
Dimensions
Weight
Capacity
Letter
216 x 279 mm (8.5 x 11 inches)
For plain media: 60 to 120 g/m2 (16 to 32 lb)
For thick media: 128 to 199 g/m2 (34 to 53 lb)
For plain media: 30 sheets of 75 g/m2 (20 lb) paper
For glossy media: 20 sheets
For thick media: the stack height must not exceed 7 mm (0.27 inch)
A4
210 x 297 mm (8.3 x 11.7 inches)
Legal
216 x 356 mm (8.5 x 14 inches)
8.5x13
216 x 330 mm (8.5 x 13 inches)
Executive(JIS)
216 x 330 mm (8.5 x 13 inches)
ADF supported sizes and weights
Size
Dimensions
Weight
Capacity
Letter
216 x 279 mm (8.5 x 11 inches)
60 to 120 g/m2 (16 to 32 lb)
50 sheets of 75 g/m2 (20 lb) paper
A4
210 x 297 mm (8.3 x 11.7 inches)
A5
148 x 210 mm (5.8 x 8.3 inches)
Legal
216 x 356 mm (8.5 x 14 inches)

Printing and paper storage environment

Ideally, the printing and paper storage environment should be at or near room temperature, and not too dry or too humid. Remember paper is hygroscopic; it absorbs and loses moisture rapidly.

Heat works with humidity to damage paper. Heat causes the moisture in paper to evaporate, while cold causes it to condense on the sheets. Heating systems and air conditioners remove most of the humidity from a room. As paper is opened and used, it loses moisture, causing streaks and smudging. Humid weather or water coolers can cause the humidity to increase in a room. As paper is opened and used it absorbs any excess moisture, causing light print and dropouts. Also, as paper loses and gains moisture it can distort. This can cause jams.

As a result, paper storage and handling are as important as the paper-making process itself. Paper storage environmental conditions directly affect the feed operation.

Care should be taken not to purchase more paper than can be easily used in a short time (about 3 months). Paper stored for long periods might experience heat and moisture extremes, which can cause damage. Planning is important to prevent damage to a large supply of paper.

Unopened paper in sealed reams can remain stable for several months before use. Opened packages of paper have more potential for environmental damage, especially if they are not wrapped with a moisture-proof barrier.

The paper storage environment should be properly maintained to ensure optimum MFP performance. The required condition is 20° to 24°C (68° to 75°F), with a relative humidity of 45% to 55%. The following guidelines should be helpful when evaluating the paper's storage environment:
  • Paper should be stored at or near room temperature.

  • The air should not be too dry or too humid (due to the hygroscopic properties of paper).

  • The best way to store an opened ream of paper is to rewrap it tightly in its moisture-proof wrapping. If the printer environment is subject to extremes, unwrap only the amount of paper to be used during the day's operation to prevent unwanted moisture changes.

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Envelopes

Envelope construction is critical. Envelope fold lines can vary considerably, not only between manufacturers, but also within a box from the same manufacturer. Successful printing on envelopes depends upon the quality of the envelopes. When selecting envelopes, consider the following components:

  • Weight: The weight of the envelope paper should not exceed 105 g/m2 (28 lb) or jamming might occur.

  • Construction: Prior to printing, envelopes should lie flat with less than 6 mm (0.25 inch) curl, and should not contain air.

  • Condition: Envelopes should not be wrinkled, nicked, or otherwise damaged.

  • Temperature: You should use envelopes that are compatible with the heat and pressure of the printer.

  • Size: You should use only envelopes within the following size ranges.

    • Minimum : 76 x 127 mm (3 x 5 inches)

    • Maximum : 216 x 356 mm (8.5 x 14 inches)

NOTE: Use only tray 1 or the optional envelope feeder to print envelopes.You might experience some jams when using any media with a length less than 178 mm (7 inches). This might be caused by paper that has been affected by environmental conditions. For optimum performance, make sure you are storing and handling the paper correctly (see Printing and paper storage environment ). Choose envelopes in the printer driver (see Using the printer drivers ).

Envelopes with double side seams

Double side-seam construction has vertical seams at both ends of the envelope rather than diagonal seams. This style might be more likely to wrinkle. Be sure the seam extends all the way to the corner of the envelope as illustrated below.

product illustration
1
Acceptable envelope construction
2
Unacceptable envelope construction

Envelopes with adhesive strips or flaps

Envelopes with a peel-off adhesive strip or with more than one flap that folds over to seal must use adhesives compatible with the heat and pressure in the printer. The extra flaps and strips might cause wrinkling, creasing, or even jams and might even damage the fuser.

Envelope margins

The following gives typical address margins for a commercial #10 or DL envelope.

Type of address
Top margin
Left margin
Return address
15 mm (0.6 inch)
15 mm (0.6 inch)
Delivery address
51 mm (2.0 inches)
89 mm (3.5 inches)
NOTE: For the best print quality, position margins no closer than 15 mm (0.6 inch) from the edges of the envelope. Avoid printing over the area where the envelope's seams meet.

Envelope storage

Proper storage of envelopes helps contribute to print quality. Envelopes should be stored flat. If air is trapped in an envelope, creating an air bubble, then the envelope might wrinkle during printing.

For more information, see Printing on envelopes .

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Labels

CAUTION: To avoid damaging the MFP, use only labels recommended for laser printers. Never print on the same sheet of labels more than once or print on a partial sheet of labels.

Label construction

When selecting labels, consider the quality of each component:

  • Adhesives: The adhesive material should be stable at 200°C (392°F), the printer's fusing temperature.

  • Arrangement: Only use labels with no exposed backing between them. Labels can peel off sheets with spaces between the labels, causing serious jams.

  • Curl: Prior to printing, labels must lie flat with no more than 13 mm (0.5 inch) of curl in any direction.

  • Condition: Do not use labels with wrinkles, bubbles, or other indications of separation.

For more information, see Printing on labels .

NOTE: Choose labels in the printer driver (see Using the printer drivers ).

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Transparencies

Transparencies used in the printer must be able to withstand 200°C (392°F), the printer's fusing temperature.

CAUTION: To avoid damaging the MFP, use only transparencies recommended for use in HP LaserJet printers, such as HP-brand transparencies. (For ordering information, see Part numbers .)

For more information, see Printing on transparencies .

NOTE: Choose transparencies in the printer driver (see Using the printer drivers ).

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